/* MegaMix AI Web App – purple/dark theme */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #fff;
    min-height: 100vh;
    padding-top: 60px;
}

.hidden { display: none !important; }
@keyframes viewFadeIn { to { opacity: 1; } }
.view.view-visible { opacity: 0; animation: viewFadeIn 0.3s ease forwards; }

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #000;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 20px;
}
.navbar-logo {
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
}
.navbar-logo img {
    height: 80px;
    display: block;
    object-fit: contain;
}
.navbar-logo:hover { color: #8b5cf6; }
.navbar-logo a:hover { opacity: 0.9; }
.navbar-links {
    display: flex;
    gap: 30px;
    align-items: center;
}
.navbar-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}
.navbar-links a:hover { color: #8b5cf6; }
.navbar-credits {
    font-size: 0.9rem;
    color: #ccc;
}
.navbar-credits strong { color: #8b5cf6; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.2s ease;
}
.btn-primary {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
    color: #fff;
    box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35);
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
}
.btn-primary:active {
    transform: translateY(0) scale(0.98);
}
.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: #8b5cf6;
}
.btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.btn-ghost:hover {
    border-color: #8b5cf6;
    color: #8b5cf6;
    background: rgba(139, 92, 246, 0.08);
}
.btn-ghost:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.4);
}
.btn-small { padding: 6px 12px; font-size: 0.85rem; }
.btn-hero { padding: 16px 40px; font-size: 1.1rem; margin-top: 0; }
.hero-cta-center {
    text-align: center;
    margin-top: 16px;
}
.hero-cta-center .btn-hero { margin-top: 0; }
.hero-free-trial-bottom {
    text-align: center;
    padding: 48px 20px 56px;
}
.hero-free-trial-bottom .btn-hero {
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* Views */
.view {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px 80px;
}

/* Landing – Hero */
.hero {
    text-align: center;
    padding: 40px 0 60px;
}
.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}
.hero-sub {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 24px;
    line-height: 1.5;
}
.hero-plugin-note {
    font-size: 1rem;
    opacity: 0.85;
    margin-bottom: 24px;
    line-height: 1.5;
    color: #c4b5fd;
}
.hero-benefits {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 32px;
    margin-bottom: 24px;
}
.hero-benefits li {
    font-size: 1rem;
    color: #a78bfa;
}
.hero-benefit-emoji {
    margin-right: 0.35em;
}
.hero-benefits-below-btn {
    margin-top: 1.25rem;
}

/* How it works */
.how-it-works {
    padding: 60px 0;
}
.how-it-works h2 {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 40px;
}
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}
.step {
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid rgba(255,255,255,0.08);
}
.step-num {
    display: inline-block;
    width: 36px;
    height: 36px;
    line-height: 36px;
    text-align: center;
    background: #8b5cf6;
    border-radius: 50%;
    font-weight: 700;
    margin-bottom: 12px;
}
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { font-size: 0.95rem; opacity: 0.85; line-height: 1.5; }

/* Testimonials */
.testimonials {
    text-align: center;
    padding: 40px 0 60px;
}
.testimonials h2 { font-size: 1.5rem; margin-bottom: 24px; }
.testimonial-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}
.testimonial-strip blockquote {
    font-size: 1rem;
    opacity: 0.9;
    font-style: italic;
    max-width: 280px;
}

/* Workspace – App view */
#view-app .workspace {
    padding: 0;
    animation: workspaceIn 0.5s ease forwards;
}
@keyframes workspaceIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    #view-app .workspace { animation: none; }
}

/* Upload and file list – collapsible */
.flow-step {
    font-size: 1.035rem;
    font-weight: 600;
    color: #8b5cf6;
    margin-bottom: 12px;
    margin-top: 24px;
    letter-spacing: 0.03em;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    animation: flowStepIn 0.4s ease forwards;
}
.flow-step:first-child { margin-top: 0; }
@keyframes flowStepIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .flow-step { animation: none; }
}
.upload-and-files { margin-bottom: 24px; }
.upload-and-files-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.upload-and-files-header h2 { font-size: 1.25rem; font-weight: 600; margin: 0; }
.upload-and-files-header-title {
    display: flex;
    align-items: center;
    gap: 8px;
}
.upload-and-files-body.collapsed .file-list { display: none; }
.upload-and-files-body.collapsed .upload-zone {
    padding: 12px 16px;
    min-height: 0;
}
.upload-and-files-body.collapsed .upload-zone p:first-child { display: none; }
.upload-and-files-body.collapsed .upload-hint { margin: 0; font-size: 0.85rem; }

.upload-section { margin-bottom: 24px; }
.upload-section h2 { font-size: 1.25rem; margin-bottom: 12px; font-weight: 600; }
.upload-zone {
    border: 2px dashed rgba(139, 92, 246, 0.5);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    background: rgba(139, 92, 246, 0.06);
    transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.upload-zone:hover {
    background: rgba(139, 92, 246, 0.12);
    border-color: rgba(139, 92, 246, 0.7);
    box-shadow: 0 0 24px rgba(139, 92, 246, 0.15);
}
.upload-zone.dragover {
    background: rgba(139, 92, 246, 0.18);
    border-color: #8b5cf6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25), 0 0 24px rgba(139, 92, 246, 0.15);
}
.upload-zone p { margin: 4px 0; }
.upload-hint { font-size: 0.9rem; opacity: 0.7; }
.file-list {
    list-style: none;
    margin-top: 12px;
}
.file-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: rgba(255,255,255,0.04);
    border-radius: 8px;
    margin-bottom: 6px;
    border: 1px solid rgba(255,255,255,0.06);
}
.file-list li:nth-child(even) { background: rgba(255,255,255,0.06); }
.file-list .remove-file {
    background: rgba(248, 113, 113, 0.15);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: #f87171;
    cursor: pointer;
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}
.file-list .remove-file:hover {
    background: #f87171;
    color: #fff;
    border-color: #f87171;
}

/* Mode toggle */
.mode-toggle {
    display: flex;
    gap: 0;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.15);
    width: fit-content;
}
.mode-btn {
    padding: 12px 28px;
    border: none;
    background: rgba(255,255,255,0.06);
    color: #a0a0a0;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.2s, color 0.2s;
}
.mode-btn.active {
    background: #8b5cf6;
    color: #fff;
}
.mode-btn:not(.active):hover { background: rgba(255,255,255,0.12); color: #fff; }

/* DAW wrap – Advanced: mixer + transport in one block */
.daw-wrap {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-bottom: 24px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 14px;
    padding: 28px;
    box-sizing: border-box;
}
.daw-wrap .panel { margin-bottom: 0; }
.daw-wrap .before-after-card { margin-top: 20px; }

/* Panels */
.panel {
    background: rgba(255,255,255,0.04);
    border-radius: 14px;
    padding: 28px;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.08);
}
.panel h3 { margin-bottom: 20px; font-size: 1.15rem; font-weight: 600; }
.panel label { display: block; margin-bottom: 6px; font-size: 0.9rem; opacity: 0.9; }
.panel select {
    width: 100%;
    max-width: 280px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.3);
    color: #fff;
    margin-bottom: 16px;
}
.preset-prompts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}
.preset-prompts-grid .preset-prompt-btn {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
    min-height: 2.8em;
    padding: 12px 10px;
}
.panel .guidance-input {
    width: 100%;
    max-width: 400px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.3);
    color: #fff;
    margin-bottom: 16px;
    box-sizing: border-box;
}
.panel .guidance-input::placeholder { color: #94a3b8; }
.panel .guidance-input {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.panel .guidance-input:focus {
    outline: none;
    border-color: #8b5cf6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}
#btn-mix-it { margin-bottom: 20px; }
.btn-ai-mastering-sparkle {
    position: relative;
    overflow: hidden;
    animation: ai-master-glow 2s ease-in-out infinite;
}
.btn-ai-mastering-sparkle::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent, rgba(255,255,255,0.1), transparent);
    animation: ai-master-shimmer 3s linear infinite;
    pointer-events: none;
}
@keyframes ai-master-glow {
    0%, 100% { box-shadow: 0 0 16px rgba(139, 92, 246, 0.4); }
    50% { box-shadow: 0 0 28px rgba(139, 92, 246, 0.7); }
}
@keyframes ai-master-shimmer {
    0% { transform: translateX(-50%) rotate(0deg); }
    100% { transform: translateX(50%) rotate(0deg); }
}
.progress-wrap {
    height: 8px;
    background: rgba(0,0,0,0.3);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}
.progress-bar {
    height: 100%;
    width: 0%;
    background: #8b5cf6;
    transition: width 0.15s linear;
}

.mix-it-loading {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin: 12px 0 20px 0;
    padding: 14px 20px;
    background: rgba(139, 92, 246, 0.12);
    border-radius: 10px;
    border: 1px solid rgba(139, 92, 246, 0.3);
    animation: mixItPulse 2.5s ease-in-out infinite;
}
@keyframes mixItPulse {
    0%, 100% { box-shadow: 0 0 0 rgba(139, 92, 246, 0); }
    50% { box-shadow: 0 0 20px rgba(139, 92, 246, 0.2); }
}
@media (prefers-reduced-motion: reduce) {
    .mix-it-loading { animation: none; }
}
.mix-it-loading-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.mix-it-loading .loading-spinner {
    width: 28px;
    height: 28px;
    border-width: 2px;
    flex-shrink: 0;
}
.mix-it-loading-status {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}
.mix-it-loading-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: #c4b5fd;
}
.mix-it-loading-estimate {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.65);
}
.mix-it-progress-track {
    height: 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 3px;
    overflow: hidden;
}
.mix-it-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #8b5cf6, #a78bfa);
    border-radius: 3px;
    transition: width 0.25s ease;
}
.mix-done-check {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
}
.mix-done-check.hidden { display: none; }
.mix-done-checkmark {
    width: 64px;
    height: 64px;
    color: #10b981;
    animation: mix-done-pop 0.4s ease-out;
}
.mix-done-circle {
    stroke-dasharray: 151;
    stroke-dashoffset: 151;
    animation: mix-done-circle 0.5s ease-out 0.2s forwards;
}
.mix-done-path {
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: mix-done-path 0.35s ease-out 0.5s forwards;
}
.mix-done-label {
    font-size: 1rem;
    font-weight: 600;
    color: #10b981;
}
.mix-done-check.mix-done-fade {
    opacity: 0;
    transition: opacity 0.5s ease;
}
@keyframes mix-done-pop {
    0% { transform: scale(0.5); opacity: 0; }
    70% { transform: scale(1.08); }
    100% { transform: scale(1); opacity: 1; }
}
@keyframes mix-done-circle {
    to { stroke-dashoffset: 0; }
}
@keyframes mix-done-path {
    to { stroke-dashoffset: 0; }
}
.josh-avatar-wrap {
    position: fixed;
    left: 6.74%;
    bottom: 5.33%;
    top: auto;
    z-index: 50;
    pointer-events: auto;
    cursor: grab;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: left 0.35s ease, bottom 0.35s ease;
}
.josh-avatar-wrap:active { cursor: grabbing; }
.josh-avatar-help {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1px solid rgba(139, 92, 246, 0.5);
    background: rgba(30, 30, 30, 0.95);
    color: #a78bfa;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    pointer-events: auto;
    box-shadow: 0 1px 6px rgba(0,0,0,0.3);
}
.josh-avatar-help:hover {
    background: rgba(139, 92, 246, 0.25);
    color: #c4b5fd;
}
.josh-thought-wrap {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 6px;
    min-width: 240px;
    max-width: 240px;
    pointer-events: auto;
}
.josh-thought-wrap.josh-bubble-empty .josh-thought-simple {
    display: none;
}
.josh-thought-wrap.josh-bubble-empty {
    min-height: 0;
    margin-bottom: 0;
}
.josh-thought-simple {
    display: block;
    animation: josh-bubble-fade-in 0.35s ease-out;
}
.josh-thought-simple.hidden { display: none; }
.josh-thought-input-row {
    animation: josh-bubble-fade-in 0.3s ease-out;
}
.josh-thought-chat:not(.hidden) {
    animation: josh-bubble-fade-in 0.3s ease-out;
}
@keyframes josh-bubble-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}
.josh-avatar-thought {
    position: relative;
    display: inline-block;
    padding: 6px 12px;
    min-width: 100%;
    max-width: 240px;
    text-align: center;
    background: rgba(30, 30, 30, 0.98);
    border: 2px solid rgba(139, 92, 246, 0.4);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #a78bfa;
    white-space: normal;
    box-shadow: 0 2px 12px rgba(0,0,0,0.35);
    box-sizing: border-box;
    cursor: pointer;
}
.josh-avatar-thought::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -10px;
    margin-left: -8px;
    border: 8px solid transparent;
    border-top-color: rgba(139, 92, 246, 0.4);
    border-bottom: none;
}
.josh-avatar-thought::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -7px;
    margin-left: -6px;
    border: 6px solid transparent;
    border-top-color: rgba(30, 30, 30, 0.98);
    border-bottom: none;
}
.josh-thought-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px 6px 12px;
    background: rgba(30, 30, 30, 0.98);
    border: 2px solid rgba(139, 92, 246, 0.4);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.35);
    box-sizing: border-box;
}
.josh-thought-input-row.hidden { display: none; }
.josh-thought-input {
    flex: 1;
    min-width: 0;
    padding: 6px 0;
    border: none;
    background: transparent;
    color: #fff;
    font-size: 0.8rem;
    outline: none;
}
.josh-thought-input::placeholder { color: rgba(167, 139, 250, 0.6); }
.josh-thought-send {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: rgba(139, 92, 246, 0.6);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.josh-thought-send:hover { background: rgba(139, 92, 246, 0.9); }
.josh-thought-chat {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    width: min(420px, calc(100vw - 32px));
    max-width: 320px;
    max-height: min(50vh, 380px);
    display: flex;
    flex-direction: column;
    background: rgba(30, 30, 30, 0.98);
    border: 2px solid rgba(139, 92, 246, 0.4);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    z-index: 100;
}
.josh-thought-chat.hidden { display: none; }
.josh-thought-close {
    position: absolute;
    left: 12px;
    top: 10px;
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: #94a3b8;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
}
.josh-thought-close:hover { color: #fff; }
.josh-thought-messages {
    flex: 1;
    overflow-y: auto;
    padding: 44px 16px 12px;
    min-height: 120px;
    max-height: 40vh;
}
.josh-thought-messages .josh-msg {
    margin-bottom: 10px;
    font-size: 0.9rem;
    animation: josh-msg-fade-in 0.35s ease-out;
}
@keyframes josh-msg-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}
.josh-thought-messages .josh-msg.user { color: #a78bfa; }
.josh-thought-messages .josh-msg.bot { color: #94a3b8; }
.josh-thought-chat-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px 14px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.josh-thought-chat-input {
    flex: 1;
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    background: rgba(0,0,0,0.25);
    color: #fff;
    font-size: 0.9rem;
    outline: none;
}
.josh-thought-chat-input::placeholder { color: rgba(167, 139, 250, 0.6); }
.josh-thought-chat-send {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(139, 92, 246, 0.7);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.josh-thought-chat-send:hover { background: rgba(139, 92, 246, 0.95); }
.josh-avatar-bubble {
    position: relative;
    width: 88px;
    height: 88px;
    border-radius: 50%;
    overflow: hidden;
    background: rgba(30, 30, 30, 0.95);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 0 3px rgba(139, 92, 246, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: josh-float 4s ease-in-out infinite;
}
.josh-avatar-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 50%;
}
@keyframes josh-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}
.loading-block {
    margin: 12px 0;
    text-align: center;
}
.loading-block-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-top: 10px;
}
.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: #8b5cf6;
    border-radius: 50%;
    animation: loading-spin 0.8s linear infinite;
}
@keyframes loading-spin {
    to { transform: rotate(360deg); }
}

.one-file-master-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 24px 16px;
    min-height: 120px;
}
.one-file-master-loading.hidden { display: none; }
.one-file-separate-progress-wrap {
    width: 100%;
    max-width: 320px;
}
.one-file-separate-progress-wrap.hidden { display: none; }
.one-file-separate-progress-track {
    height: 10px;
    width: 100%;
    background: rgba(255,255,255,0.12);
    border-radius: 6px;
    overflow: hidden;
}
.one-file-separate-progress-fill {
    height: 100%;
    width: 0%;
    background: #8b5cf6;
    border-radius: 6px;
    transition: width 0.3s ease;
}
.one-file-separate-timer {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    margin: 10px 0 0 0;
    text-align: center;
}
.one-file-master-loading-spinner-wrap {
    display: flex;
    justify-content: center;
}
.one-file-master-loading-spinner-wrap.hidden { display: none; }
.one-file-master-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: #8b5cf6;
    border-radius: 50%;
    animation: loading-spin 0.8s linear infinite;
}
.one-file-master-loading-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: #c4b5fd;
    margin: 0;
}

.loading-bar-indeterminate {
    height: 6px;
    width: 100%;
    max-width: 240px;
    background: rgba(0,0,0,0.3);
    border-radius: 4px;
    overflow: hidden;
}
.loading-bar-indeterminate::after {
    content: '';
    display: block;
    height: 100%;
    width: 40%;
    background: #8b5cf6;
    border-radius: 4px;
    animation: loading-bar-shuttle 1.2s ease-in-out infinite;
}
@keyframes loading-bar-shuttle {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}
#mastering-loading-block .loading-block-inner { margin-top: 8px; }

/* Chat (shared section) */
.chat-section { margin-bottom: 24px; }
.chat-section.chat-attached {
    margin-top: 20px;
    padding-top: 0;
    border-top: none;
}
.chat-wrap { margin-top: 0; }
.chat-wrap.chat-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    animation: chat-card-in 0.35s ease-out;
}
@keyframes chat-card-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.chat-wrap h4 { font-size: 1.05rem; margin-bottom: 8px; font-weight: 600; }
.iterate-card .chat-header-right { text-align: right; margin-bottom: 12px; }
.iterate-card .chat-header-right .chat-purpose { margin-bottom: 0; }
.step3-chat-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.step3-chat-header-row h4 { margin: 0; }
.chat-purpose {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 12px;
    line-height: 1.4;
}
.quick-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
    margin-bottom: 12px;
}
.quick-prompts .quick-prompt,
#view-mastering .quick-prompts .quick-prompt-mastering {
    font-size: 0.85rem;
    padding: 14px 16px;
    min-height: 44px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.quick-prompts .quick-prompt:hover,
#view-mastering .quick-prompts .quick-prompt-mastering:hover {
    transform: scale(1.02);
    box-shadow: 0 0 0 1px rgba(139, 92, 246, 0.3), 0 0 12px rgba(139, 92, 246, 0.2);
}
.quick-prompts .quick-prompt:focus-visible,
#view-mastering .quick-prompts .quick-prompt-mastering:focus-visible {
    outline: 2px solid #8b5cf6;
    outline-offset: 2px;
}
.chat-messages {
    min-height: 72px;
    max-height: 180px;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 12px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.06);
}
.chat-messages .msg {
    margin-bottom: 8px;
    animation: chat-msg-in 0.25s ease-out;
}
@keyframes chat-msg-in {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.chat-messages .msg.user { color: #a78bfa; }
.chat-messages .msg.bot { color: #94a3b8; }
.josh-transparency-wrap {
    margin-top: 12px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    background: rgba(0,0,0,0.2);
}
.josh-transparency-wrap.hidden { display: none; }
.josh-transparency-toggle {
    width: 100%;
    padding: 10px 14px;
    text-align: left;
    background: transparent;
    border: none;
    color: #a78bfa;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.josh-transparency-toggle:hover { background: rgba(139,92,246,0.1); }
.josh-transparency-toggle[aria-expanded="true"]::after { content: '−'; }
.josh-transparency-toggle[aria-expanded="false"]::after { content: '+'; }
.josh-transparency-body {
    padding: 0 14px 12px;
}
.josh-transparency-body.collapsed { display: none; }
.josh-transparency-list {
    margin: 0;
    padding-left: 1.25rem;
    font-size: 0.85rem;
    color: #94a3b8;
    line-height: 1.6;
}
.chat-input-wrap {
    display: flex;
    gap: 10px;
}
#chat-input {
    flex: 1;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.25);
    color: #fff;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
#chat-input:focus {
    outline: none;
    border-color: #8b5cf6;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}
#chat-input::placeholder { color: #94a3b8; }

/* Advanced – tabs */
.advanced-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}
.adv-tab {
    padding: 8px 16px;
    border: none;
    background: rgba(255,255,255,0.05);
    color: #ccc;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}
.adv-tab.active { background: #8b5cf6; color: #fff; }
.adv-tab:not(.active):hover { background: rgba(255,255,255,0.1); }
.adv-panel { margin-bottom: 16px; }
.adv-panel.active { display: block; }
.slider-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
}
.slider-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.slider-row label {
    font-size: 0.8rem;
    opacity: 0.9;
}
.slider-row input[type="range"] {
    width: 100%;
    accent-color: #8b5cf6;
}
.slider-row .value {
    font-size: 0.8rem;
    color: #a78bfa;
}
.preset-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 20px;
}
.preset-actions .btn-small,
.preset-actions input,
.preset-actions select {
    height: 36px;
    line-height: 1;
}
#preset-name-input {
    width: 140px;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.3);
    color: #fff;
    font-size: 0.9rem;
}
#load-preset-select {
    width: 160px;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.3);
    color: #fff;
    font-size: 0.9rem;
}

/* Before/After playback card – shared in both Simple and Advanced */
.playback-section { margin-bottom: 24px; }
.josh-section .josh-section-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #c4b5fd;
    margin: 0 0 8px 0;
}
.josh-section .josh-section-position {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
    margin: 0 0 14px 0;
}
.josh-section .chat-wrap {
    margin-top: 20px;
}
/* Step 3: one unified card (Before/After + Refine with Josh) */
.step3-unified-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 24px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    margin-top: 12px;
    transition: box-shadow 0.3s ease;
}
.step3-unified-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.playback-section .step3-unified-card .before-after-card-header {
    justify-content: flex-end;
    margin-bottom: 14px;
}
.playback-section .step3-unified-card .before-after-card {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 20px 0;
    margin-top: 0;
    border-radius: 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.playback-section .step3-unified-card .chat-wrap.chat-card {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 20px 0 0;
    animation: none;
}

.playback-section.shared-playback .before-after-card {
    padding: 20px;
    border-radius: 16px;
}
.before-after-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.before-after-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
}
.before-after-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}
.before-after-tabs {
    display: flex;
    background: rgba(0,0,0,0.3);
    border-radius: 10px;
    padding: 3px;
    flex-shrink: 0;
}
.before-after-tabs button {
    padding: 6px 14px;
    border: none;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    background: transparent;
    color: rgba(255,255,255,0.8);
    transition: background 0.2s ease, color 0.2s ease;
}
.before-after-tabs button.active {
    background: #fff;
    color: #111;
}
.before-after-tabs button:not(.active):hover { color: #fff; }
.before-after-tabs-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.btn-icon-info {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.35);
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.9);
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s ease, border-color 0.2s ease;
}
.btn-icon-info:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.5);
}
/* Toast notifications: appear from the info button you clicked */
.toast {
    pointer-events: auto;
    padding: 14px 18px;
    max-width: min(420px, calc(100vw - 32px));
    background: rgba(20, 20, 25, 0.97);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 12px;
    font-size: 0.85rem;
    line-height: 1.5;
    color: rgba(255,255,255,0.95);
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    animation: toast-in 0.25s ease-out;
}
.toast-anchored {
    position: fixed;
    z-index: 9999;
}
.toast p { margin: 0 0 8px 0; }
.toast p:last-child { margin-bottom: 0; }
@keyframes toast-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}
.mixer-collapsible-header-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}
.mixer-collapsible-header-wrap .mixer-collapsible-header { flex: 1; }
.mixer-info-btn { flex-shrink: 0; }
.before-after-instruction,
.before-after-building {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.65);
    text-align: center;
    margin-bottom: 8px;
    line-height: 1.35;
}
.before-after-play-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 8px 0;
}
.before-after-play-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.before-after-play-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 24px rgba(16, 185, 129, 0.45), 0 4px 20px rgba(16, 185, 129, 0.4);
}
.before-after-play-btn.playing {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}
.before-after-play-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.before-after-progress-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 14px;
    width: 100%;
}
.before-after-time,
.before-after-duration {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.85);
    min-width: 40px;
    font-variant-numeric: tabular-nums;
}
.before-after-duration { text-align: right; }
.before-after-progress {
    flex: 1;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
    outline: none;
}
.before-after-progress::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #8b5cf6;
    cursor: pointer;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.3);
}
.before-after-progress::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #8b5cf6;
    cursor: pointer;
    border: none;
}
.before-after-progress::-webkit-slider-runnable-track,
.before-after-progress::-moz-range-track {
    height: 8px;
    border-radius: 4px;
    background: rgba(255,255,255,0.2);
}

/* Mixer collapsible (Step 3) */
.mixer-collapsible {
    margin-bottom: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    background: rgba(0,0,0,0.2);
    overflow: hidden;
}
.mixer-collapsible-header {
    width: 100%;
    padding: 12px 16px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s ease;
}
.mixer-collapsible-header::before {
    content: '\25B8';
    font-size: 0.75rem;
    transition: transform 0.2s ease;
}
.mixer-collapsible:not(.collapsed) .mixer-collapsible-header::before {
    transform: rotate(90deg);
}
.mixer-collapsible-header:hover { background: rgba(255,255,255,0.05); }
.mixer-collapsible-body {
    padding: 0 16px 16px;
}
.mixer-collapsible.collapsed .mixer-collapsible-body {
    display: none;
}

/* Mixer – horizontal sound board with vertical faders */
.mixer-hint {
    font-size: 0.9rem;
    opacity: 0.85;
    margin-bottom: 16px;
}
.mixer-hint-live { margin-bottom: 12px; }
.mixer-strips {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: 10px;
    margin-bottom: 20px;
    min-height: 340px;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 12px;
    scroll-behavior: smooth;
    width: 100%;
    contain: layout paint;
}
.mixer-strips::-webkit-scrollbar { height: 8px; }
.mixer-strips::-webkit-scrollbar-track { background: rgba(255,255,255,0.06); border-radius: 4px; }
.mixer-strips::-webkit-scrollbar-thumb { background: rgba(139, 92, 246, 0.5); border-radius: 4px; }
.mixer-strips::-webkit-scrollbar-thumb:hover { background: #8b5cf6; }
.mixer-strip {
    flex: 0 0 auto;
    min-width: 72px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 10px;
    background: rgba(0,0,0,0.25);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.08);
    will-change: transform;
    contain: layout;
}
.mixer-strip-name-wrap {
    margin-bottom: 10px;
    text-align: center;
    min-width: 0;
    width: 100%;
}
.mixer-strip-name {
    font-size: 0.75rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    display: block;
    color: rgba(255,255,255,0.9);
}
.mixer-strip-analysis {
    display: block;
    font-size: 0.65rem;
    color: rgba(148, 163, 184, 0.9);
    margin-top: 2px;
}
.mixer-strip-fader {
    height: 132px;
    width: 28px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-left: 3px;
    margin-right: 3px;
    margin-bottom: 12px;
}
.mixer-strip-fader input[type="range"] {
    width: 132px;
    height: 24px;
    margin: 0;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    transform: rotate(-90deg);
    transform-origin: center center;
}
.mixer-strip-fader input[type="range"]::-webkit-slider-runnable-track {
    height: 8px;
    border-radius: 4px;
    background: rgba(255,255,255,0.2);
}
.mixer-strip-fader input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #8b5cf6;
    cursor: pointer;
    margin-top: -5px;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.3);
}
.mixer-strip-fader input[type="range"]::-moz-range-track {
    height: 8px;
    border-radius: 4px;
    background: rgba(255,255,255,0.2);
}
.mixer-strip-fader input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #8b5cf6;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.3);
}
.mixer-strip-pan {
    width: 100%;
    margin-bottom: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}
.mixer-pan-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(255,255,255,0.5);
}
.mixer-strip-pan input[type="range"] {
    width: 100%;
    height: 6px;
    accent-color: #8b5cf6;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255,255,255,0.15);
    border-radius: 3px;
}
.mixer-strip-pan input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #a78bfa;
    cursor: pointer;
}
.mixer-fx-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    width: 100%;
}
.mixer-fx-slot {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    position: relative;
    width: 100%;
    justify-content: center;
}
.mixer-fx-slot.disabled .mixer-fx-power,
.mixer-fx-slot.disabled .mixer-fx-name {
    background: rgba(255,255,255,0.04);
    color: #666;
    cursor: not-allowed;
    border-color: rgba(255,255,255,0.08);
    opacity: 0.5;
    pointer-events: none;
}
.mixer-fx-slot.disabled .mixer-fx-name:hover {
    border-color: rgba(255,255,255,0.08);
}
.mixer-fx-power {
    width: 22px;
    height: 22px;
    padding: 0;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 4px;
    background: rgba(0,0,0,0.3);
    color: rgba(255,255,255,0.5);
    font-size: 0.7rem;
    cursor: pointer;
    flex-shrink: 0;
}
.mixer-fx-power[aria-pressed="true"] {
    color: #8b5cf6;
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.25);
}
.mixer-fx-name {
    padding: 4px 6px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(139, 92, 246, 0.2);
    color: #fff;
    font-size: 0.6rem;
    font-weight: 600;
    cursor: pointer;
    min-width: 52px;
}
.mixer-fx-name:hover {
    border-color: #8b5cf6;
}
.mixer-fx-mini-panel {
    position: absolute;
    left: 0;
    bottom: 100%;
    margin-bottom: 4px;
    top: auto;
    z-index: 100;
    min-width: 160px;
    padding: 10px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    background: #1a1a1a;
    box-shadow: 0 6px 20px rgba(0,0,0,0.5);
}
.mixer-fx-mini-bg {
    width: 100%;
    height: 60px;
    border-radius: 6px;
    margin-bottom: 10px;
    background-size: cover;
    background-position: center;
    background-color: rgba(0,0,0,0.4);
}
.mixer-fx-mini-bg-eq {
    background-image: url("/assets/JoshEQ%20Interface.png");
}
.mixer-fx-mini-bg-comp {
    background-image: url("/assets/JoshSquash%20Interface.png");
}
.mixer-fx-mini-knobs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    align-items: center;
    font-size: 0.7rem;
    color: rgba(255,255,255,0.9);
}
.mixer-fx-mini-knobs label { min-width: 36px; }
.mixer-fx-mini-knobs input[type="range"] {
    width: 70px;
    accent-color: #8b5cf6;
}
.mixer-fx-btn {
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(139, 92, 246, 0.2);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}
.mixer-fx-btn.on {
    background: #8b5cf6;
    border-color: #8b5cf6;
}
.mixer-fx-btn.disabled {
    background: rgba(255,255,255,0.04);
    color: #666;
    cursor: not-allowed;
    border-color: rgba(255,255,255,0.08);
    opacity: 0.5;
    pointer-events: none;
}
.mixer-fx-btn:not(.disabled):hover { border-color: #8b5cf6; }

.mixer-solo-mute-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 100%;
    margin-top: 4px;
}
.mixer-solo-mute-btn {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.25);
    background: rgba(0,0,0,0.3);
    color: rgba(255,255,255,0.6);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.mixer-solo-mute-btn:hover {
    border-color: #8b5cf6;
    color: #fff;
}
.mixer-solo-mute-btn[aria-pressed="true"] {
    background: rgba(139, 92, 246, 0.35);
    border-color: #8b5cf6;
    color: #c4b5fd;
}

.mixer-fx-popover {
    position: absolute;
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    padding: 10px;
    bottom: 100%;
    margin-bottom: 4px;
    top: auto;
    z-index: 100;
    font-size: 0.8rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}
.mixer-fx-popover .row { margin-bottom: 6px; }
.mixer-fx-popover .row label { display: inline-block; width: 70px; }
.mixer-fx-popover input[type="range"] { width: 80px; accent-color: #8b5cf6; }

/* Automation panel per strip */
.mixer-automation-panel {
    width: 100%;
    margin-top: 8px;
    padding: 8px;
    background: rgba(0,0,0,0.35);
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    font-size: 0.7rem;
}
.automation-curve-header {
    margin-bottom: 4px;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
}
.automation-keyframes { margin-bottom: 8px; }
.automation-keyframe-row {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 4px;
}
.automation-keyframe-row input[type="number"] {
    width: 36px;
    padding: 2px 4px;
    font-size: 0.7rem;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    color: #fff;
}
.automation-keyframe-row button.mixer-fx-btn { padding: 2px 6px; font-size: 0.65rem; }
.mixer-automation-panel .btn-small { margin-top: 4px; margin-right: 6px; }

/* Export */
.export-section {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    padding-top: 8px;
}
.undo-redo { display: flex; gap: 10px; }
.undo-redo-above-chat { margin-bottom: 12px; }
.export-section .btn-small { height: 36px; }
.mastered-section {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.mastering-status {
    margin: 8px 0 4px;
    font-size: 0.95rem;
    opacity: 0.9;
}
.mastering-loading-estimate {
    margin: 0 0 10px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.65);
}
.mastering-progress-track {
    height: 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}
.mastering-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #8b5cf6, #a78bfa);
    border-radius: 3px;
    transition: width 0.25s ease;
}

/* Mastering view */
.mastering-workspace { padding: 0; }
.mastering-top-bar {
    margin-bottom: 16px;
    display: flex;
    justify-content: flex-start;
}
.mastering-intro { margin-bottom: 24px; }
.mastering-intro h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.mastering-sub { font-size: 1rem; opacity: 0.9; }
.mastering-unified-card { margin-top: 12px; }
.mastering-player-section { margin-bottom: 0; }
.mastering-card { margin-bottom: 0; }
.mastering-workspace .step3-unified-card .mastering-controls-collapsible {
    margin-bottom: 0;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
}
.mastering-workspace .step3-unified-card .mastering-player-section .before-after-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: none;
    padding: 20px;
    margin-top: 0;
    border-radius: 12px;
    border-bottom: none;
    overflow: hidden;
}
.mastering-workspace .step3-unified-card .chat-section.mastering-chat-section {
    margin-top: 0;
    margin-bottom: 0;
}
.mastering-workspace .step3-unified-card .chat-wrap.chat-card {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 20px 0 0;
}
.mastering-controls-collapsible {
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    background: rgba(0,0,0,0.2);
    overflow: hidden;
}
.mastering-controls-header {
    width: 100%;
    padding: 12px 16px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}
.mastering-controls-header::before {
    content: '\25B8';
    font-size: 0.75rem;
    transition: transform 0.2s ease;
}
.mastering-controls-collapsible:not(.collapsed) .mastering-controls-header::before {
    transform: rotate(90deg);
}
.mastering-controls-header:hover { background: rgba(255,255,255,0.05); }
.mastering-controls-body { padding: 0 16px 16px; }
.mastering-controls-collapsible.collapsed .mastering-controls-body { display: none; }
.mastering-controls-hint {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-bottom: 14px;
}
.mastering-controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}
@media (max-width: 640px) {
    .mastering-controls-grid { grid-template-columns: 1fr; }
}
.mastering-controls-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}
.mastering-controls-row label { min-width: 110px; font-size: 0.9rem; }
.mastering-controls-row input[type="range"] { flex: 1; max-width: 200px; accent-color: #8b5cf6; }
.mastering-controls-value { min-width: 44px; font-size: 0.85rem; color: #a78bfa; }
.mastering-knob-input-sync {
    position: absolute;
    width: 1px; height: 1px;
    opacity: 0;
    pointer-events: none;
}
.rotary-knob {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border: 2px solid rgba(255,255,255,0.15);
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.4), 0 2px 6px rgba(0,0,0,0.3);
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}
.rotary-knob:active { cursor: grabbing; }
.rotary-knob-dial {
    width: 100%;
    height: 100%;
    position: relative;
    border-radius: 50%;
}
.rotary-knob-needle {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 3px;
    height: 22px;
    margin-left: -1.5px;
    margin-top: -22px;
    background: linear-gradient(to top, #8b5cf6, #a78bfa);
    border-radius: 2px;
    transform-origin: 50% 100%;
    box-shadow: 0 0 6px rgba(139, 92, 246, 0.5);
}
.mastering-knobs-row {
    display: flex;
    gap: 24px;
    align-items: flex-end;
}
.mastering-knob-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.mastering-knob-wrap label { font-size: 0.9rem; font-weight: 600; }
.mastering-knob { width: 64px; accent-color: #8b5cf6; }
.mastering-knob-label { font-size: 0.8rem; color: #a78bfa; min-width: 3em; text-align: center; }
.waveform-wrap-mastering {
    width: 100%;
    margin-bottom: 12px;
    border-radius: 8px;
    overflow: hidden;
    background: rgba(0,0,0,0.25);
}
.waveform-canvas-mastering {
    display: block;
    width: 100%;
    height: 70px;
    border-radius: 8px;
}
.mastering-download-section { margin-top: 32px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.1); }
.mastering-download-section h3 { font-size: 1.25rem; margin-bottom: 8px; }
.mastering-download-sub { font-size: 0.95rem; opacity: 0.85; margin-bottom: 16px; }

.mastered-label { font-size: 0.95rem; font-weight: 600; margin-right: 8px; }

/* Mastering chat – on-brand (same visual language as mixing chat) */
#chat-messages-mastering {
    min-height: 72px;
    max-height: 180px;
    overflow-y: auto;
    background: rgba(0,0,0,0.25);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 12px;
    font-size: 0.9rem;
    border: 1px solid rgba(255,255,255,0.06);
}
#chat-messages-mastering .msg { margin-bottom: 8px; }
#chat-messages-mastering .msg.user { color: #a78bfa; }
#chat-messages-mastering .msg.bot { color: #94a3b8; }
#view-mastering .chat-input-wrap {
    display: flex;
    gap: 10px;
}
#chat-input-mastering {
    flex: 1;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.25);
    color: #fff;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
#chat-input-mastering:focus {
    outline: none;
    border-color: #8b5cf6;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}
#chat-input-mastering::placeholder { color: #94a3b8; }
#view-mastering .quick-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
    margin-bottom: 12px;
}
#view-mastering .quick-prompt-mastering {
    font-size: 0.85rem;
    padding: 14px 16px;
    min-height: 44px;
}

/* Pricing view */
.pricing-section { padding: 40px 0; text-align: center; }
.pricing-section h1 { font-size: 2rem; margin-bottom: 8px; }
.pricing-sub { opacity: 0.9; margin-bottom: 40px; }
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}
.pricing-card {
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid rgba(255,255,255,0.08);
}
.pricing-card.featured {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.1);
}
.pricing-card h3 { font-size: 1.25rem; margin-bottom: 8px; }
.price-desc { font-size: 0.9rem; opacity: 0.85; margin-bottom: 16px; }
.price-amount { font-size: 1.5rem; font-weight: 700; color: #a78bfa; margin-bottom: 8px; }
.price-detail { font-size: 0.9rem; opacity: 0.8; margin-bottom: 20px; }
.pricing-card .btn { width: 100%; text-align: center; }

/* Manage Subscription view */
.manage-subscription-section {
    max-width: 480px;
    margin: 0 auto;
    padding: 40px 20px;
    text-align: left;
}
.manage-subscription-section h1 { font-size: 1.75rem; color: #8b5cf6; margin-bottom: 8px; }
.manage-subscription-sub { color: #94a3b8; font-size: 0.95rem; margin-bottom: 24px; }
.manage-subscription-section label { display: block; margin-bottom: 8px; font-size: 0.95rem; }
.manage-subscription-input {
    width: 100%;
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color: #fff;
    font-size: 1rem;
    margin-bottom: 16px;
    box-sizing: border-box;
}
.manage-subscription-input::placeholder { color: #94a3b8; }
.manage-subscription-verify { margin-bottom: 8px; }
.manage-subscription-error {
    color: #f87171;
    font-size: 0.9rem;
    margin-top: 8px;
    margin-bottom: 8px;
}
.manage-subscription-actions {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.manage-subscription-actions .btn-upgrade-disabled {
    display: block;
    width: 100%;
    background: #555;
    color: #999;
    cursor: not-allowed;
    opacity: 0.7;
    margin-bottom: 16px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
}
.manage-subscription-actions .btn-cancel-subscription {
    display: block;
    width: 100%;
    background: #dc2626;
    color: #fff;
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background 0.2s ease;
}
.manage-subscription-actions .btn-cancel-subscription:hover {
    background: #b91c1c;
}

/* Footer */
.footer {
    text-align: center;
    padding: 24px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 24px;
}
.footer a { color: #94a3b8; text-decoration: none; font-size: 0.9rem; }
.footer a:hover { color: #8b5cf6; }

/* Contact Support modal (app) */
.contact-modal-app {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}
.contact-modal-app-content {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    margin: 5% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.contact-modal-app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.contact-modal-app-header h3 {
    color: #8b5cf6;
    margin: 0;
    font-size: 1.5rem;
}
.contact-modal-app-close {
    color: #999;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s ease;
}
.contact-modal-app-close:hover { color: #fff; }
.contact-modal-app-body { padding: 30px; }
.contact-modal-app .form-group { margin-bottom: 25px; }
.contact-modal-app .form-group label {
    display: block;
    color: #fff;
    margin-bottom: 8px;
    font-weight: 500;
}
.contact-modal-app .form-group input,
.contact-modal-app .form-group textarea,
.contact-modal-app .form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-size: 1rem;
    transition: all 0.2s ease;
}
.contact-modal-app .form-group select option { background: #2d2d2d; color: #fff; }
.contact-modal-app .form-group input:focus,
.contact-modal-app .form-group textarea:focus,
.contact-modal-app .form-group select:focus {
    outline: none;
    border-color: #8b5cf6;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}
.contact-modal-app .form-group textarea {
    resize: vertical;
    min-height: 100px;
}
.contact-modal-app-buttons {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
}
.contact-modal-app .cancel-btn,
.contact-modal-app .submit-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}
.contact-modal-app .cancel-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #ccc;
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.contact-modal-app .cancel-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}
.contact-modal-app .submit-btn {
    background: linear-gradient(135deg, #8b5cf6 0%, #a855f7 100%);
    color: #fff;
}
.contact-modal-app .submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
}

/* Auth overlay: blur app until logged in (full viewport to avoid slit).
   Top padding clears fixed header so the login modal is never cut off. */
.auth-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 40px 20px;
    box-sizing: border-box;
}

@media (max-width: 768px) {
    .auth-overlay {
        align-items: flex-start;
        overflow-y: auto;
        padding: 100px 16px 24px 16px;
        -webkit-overflow-scrolling: touch;
    }
    .login-modal {
        max-height: 88vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 24px;
        margin: 12px auto 32px;
    }
}

.login-modal {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 16px;
    padding: 32px;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.login-modal h2 { margin-bottom: 8px; font-size: 1.5rem; }
.login-modal .login-welcome { color: #e2e8f0; font-size: 0.95rem; margin-bottom: 16px; line-height: 1.5; }
.login-modal .login-hint { color: #94a3b8; font-size: 0.9rem; margin-bottom: 20px; }
.login-modal label { display: block; margin-bottom: 6px; font-size: 0.9rem; }
.login-modal input {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 16px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color: #fff;
    font-size: 1rem;
}
.login-modal input::placeholder { color: #94a3b8; }
.login-modal form button[type="submit"] { width: 100%; margin-top: 8px; }
.login-modal .login-trial-copy {
    text-align: center;
    margin: 24px 0 12px;
    font-size: 1rem;
    color: #e2e8f0;
}
.login-preview-wrap {
    text-align: center;
    margin-top: 20px;
}

.buy-button {
    border: none;
    padding: 16px 40px;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    display: block;
    text-align: center;
}
.buy-button-preview {
    background: #facc15;
    color: #000;
    font-size: 1.1rem;
    text-transform: uppercase;
    box-shadow: 0 8px 20px rgba(250, 204, 21, 0.35);
}
.buy-button-preview:hover {
    background: #fde047;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(250, 204, 21, 0.45);
}
.buy-button-preview .buy-button-preview-main {
    display: block;
}
.buy-button-preview .buy-button-preview-catch {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-top: 4px;
    opacity: 0.9;
}

.buy-button-trial {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 16px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
    text-transform: uppercase;
    width: 100%;
    display: block;
}
.buy-button-trial:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(16, 185, 129, 0.4);
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

/* Pre-checkout modal must sit above auth overlay (999); keep below fixed header */
.precheckout-modal-app {
    z-index: 1100;
    align-items: flex-start;
    padding-top: 100px;
    overflow-y: auto;
    justify-content: center;
}
.precheckout-modal-app .email-modal-app-header {
    flex-wrap: wrap;
    gap: 8px;
}
.precheckout-modal-app .email-modal-app-header h3 {
    font-size: 1.05rem;
    line-height: 1.35;
    flex: 1;
    min-width: 0;
}

/* Email signup modal (before download) */
.email-modal-app {
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.email-modal-app-content {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-radius: 16px;
    width: 100%;
    max-width: 480px;
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.email-modal-app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.email-modal-app-header h3 { margin: 0; font-size: 1.25rem; color: #8b5cf6; }
.email-modal-app-close {
    font-size: 1.75rem;
    color: #94a3b8;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0 4px;
    line-height: 1;
    line-height: 1;
}
.email-modal-app-close:hover { color: #fff; }
.email-modal-app-body { padding: 24px; }
.email-modal-app-body label { display: block; margin-bottom: 8px; font-size: 0.95rem; }
.email-modal-app-body input[type="email"] {
    width: 100%;
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color: #fff;
    font-size: 1rem;
}
.email-modal-app-p { font-size: 1rem; line-height: 1.5; margin-bottom: 12px; opacity: 0.95; }
.email-modal-app-coming { font-size: 0.95rem; opacity: 0.85; margin-bottom: 24px; }
.email-modal-app-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.email-modal-app-note { font-size: 0.85rem; color: #94a3b8; font-style: italic; line-height: 1.4; }