/* ── BPMScan ──────────────────────────────────
   Navy-Violet gradient palette with light/dark
   theme support. Mouse glow, grain overlay,
   particles, sharp grid cards.
   ────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;500;600;700&family=DM+Mono:wght@300;400;500&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600&display=swap');

/* ── Dark theme (default) ─────────────────────── */
:root {
    --bg-deep:       #08081a;
    --bg:            #0e0e24;
    --bg-mid:        #121030;
    --surface:       rgba(16, 14, 38, 0.88);
    --surface-solid: #100e26;
    --border:        rgba(30, 28, 68, 0.7);
    --border-solid:  #1e1c44;
    --border-hover:  rgba(60, 56, 120, 0.5);
    --text:          #e0e2f0;
    --text-dim:      #8a88a8;
    --text-muted:    #5a587a;
    --accent:        #60a0ff;
    --accent-dim:    rgba(96, 160, 255, 0.08);
    --accent-glow:   rgba(96, 160, 255, 0.15);
    --warm:          #e8906a;
    --warm-glow:     rgba(232, 144, 106, 0.3);
    --glow-color:    rgba(100, 80, 200, 0.05);
    --glow-card:     rgba(100, 80, 200, 0.06);
    --grain-opacity: 0.035;
    --grad-a:        rgba(100, 80, 200, 0.04);
    --grad-b:        rgba(96, 160, 255, 0.02);
    --body-font:     'DM Sans', system-ui, -apple-system, sans-serif;
    --heading-font:  'Barlow Condensed', sans-serif;
    --mono-font:     'DM Mono', monospace;
}

/* ── Light theme ──────────────────────────────── */
[data-theme="light"] {
    --bg-deep:       #e8e6f0;
    --bg:            #f8f7fc;
    --bg-mid:        #efedf8;
    --surface:       rgba(255, 255, 255, 0.92);
    --surface-solid: #ffffff;
    --border:        rgba(160, 150, 200, 0.4);
    --border-solid:  #c8c2d8;
    --border-hover:  rgba(140, 130, 190, 0.4);
    --text:          #1a1830;
    --text-dim:      #5a566e;
    --text-muted:    #8a85a0;
    --accent:        #4f46e5;
    --accent-dim:    rgba(79, 70, 229, 0.06);
    --accent-glow:   rgba(79, 70, 229, 0.12);
    --warm:          #d06050;
    --warm-glow:     rgba(208, 96, 80, 0.25);
    --glow-color:    rgba(79, 70, 229, 0.03);
    --glow-card:     rgba(79, 70, 229, 0.04);
    --grain-opacity: 0.018;
    --grad-a:        rgba(79, 70, 229, 0.03);
    --grad-b:        rgba(96, 160, 255, 0.02);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--body-font);
    font-weight: 400;
    font-size: 15px;
    background: var(--bg-deep);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    letter-spacing: 0.01em;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── grain overlay ────────────────────────────── */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: var(--grain-opacity);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 180px;
}

/* ── page-wide mouse glow ─────────────────────── */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        var(--glow-color),
        transparent 40%
    );
}

/* ── background gradient ──────────────────────── */
.bg-gradient {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 30% 0%, var(--grad-a) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, var(--grad-b) 0%, transparent 40%),
        linear-gradient(170deg, var(--bg) 0%, var(--bg-deep) 30%, var(--bg-mid) 70%, var(--bg-deep) 100%);
}

/* ── particles ────────────────────────────────── */
#particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    bottom: -4px;
    width: 1px;
    height: 1px;
    background: var(--text-dim);
    border-radius: 50%;
    opacity: 0;
    animation:
        particleDrift var(--dur, 18s) linear var(--delay, 0s) infinite,
        particleTwinkle var(--twinkle, 4s) ease-in-out var(--delay, 0s) infinite;
}

@keyframes particleDrift {
    0%   { transform: translateY(0) translateX(0); opacity: 0; }
    8%   { opacity: 0.5; }
    88%  { opacity: 0.3; }
    100% { transform: translateY(-105vh) translateX(var(--dx, 20px)); opacity: 0; }
}

@keyframes particleTwinkle {
    0%, 100% { filter: brightness(1); }
    50%      { filter: brightness(2); }
}

[data-theme="light"] .particle { opacity: 0; animation: none; display: none; }

/* ── nav ──────────────────────────────────────── */
nav {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
}

nav .logo {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.2s;
}
nav .logo:hover { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.nav-right a {
    font-family: var(--mono-font);
    font-weight: 400;
    font-size: 0.72rem;
    color: var(--text-dim);
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: color 0.2s, border-color 0.2s;
    padding-bottom: 2px;
    border-bottom: 1px solid transparent;
}
.nav-right a:hover { color: var(--text); }
.nav-right a.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ── theme toggle ─────────────────────────────── */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-dim);
    cursor: pointer;
    padding: 0.35rem 0.55rem;
    font-size: 0.85rem;
    line-height: 1;
    transition: color 0.2s, border-color 0.2s;
    display: flex;
    align-items: center;
}
.theme-toggle:hover {
    color: var(--text);
    border-color: var(--border-hover);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { display: none; }
:root .theme-toggle .icon-sun { display: inline; }
:root .theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: inline; }

/* ── main layout (wider for tools) ────────────── */
main {
    position: relative;
    z-index: 1;
    flex: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* ── hero ──────────────────────────────────────── */
.hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.hero-badge {
    display: inline-block;
    font-family: var(--mono-font);
    font-weight: 400;
    font-size: 0.65rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 0.35rem 1rem;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 4rem);
    line-height: 1.05;
    text-transform: uppercase;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
    color: var(--text);
}

.hero .subtitle {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--text-dim);
    max-width: 480px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

/* ── upload area ──────────────────────────────── */
.upload-area {
    position: relative;
    border: 1px solid var(--border);
    padding: 2.5rem 2rem;
    background: var(--surface);
    transition: border-color 0.3s;
    overflow: hidden;
    cursor: pointer;
}

.upload-area::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
        400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        var(--glow-card),
        transparent 40%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.upload-area:hover::before { opacity: 1; }
.upload-area:hover { border-color: var(--border-hover); }
.upload-area.drag-over {
    border-color: var(--accent);
    box-shadow: inset 0 0 40px var(--accent-dim);
}

.upload-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}
.upload-prompt p {
    color: var(--text-dim);
    font-size: 0.85rem;
    font-family: var(--mono-font);
}

.upload-icon {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-bottom: 0.3rem;
    height: 32px;
}
.upload-icon .bar {
    width: 2px;
    background: var(--text-dim);
    border-radius: 1px;
    animation: waveBar 1.4s ease-in-out infinite;
    opacity: 0.4;
}
.upload-icon .bar:nth-child(1) { height: 10px; animation-delay: 0.0s; }
.upload-icon .bar:nth-child(2) { height: 20px; animation-delay: 0.15s; }
.upload-icon .bar:nth-child(3) { height: 30px; animation-delay: 0.3s; }
.upload-icon .bar:nth-child(4) { height: 24px; animation-delay: 0.45s; }
.upload-icon .bar:nth-child(5) { height: 14px; animation-delay: 0.6s; }
.upload-icon .bar:nth-child(6) { height: 26px; animation-delay: 0.75s; }
.upload-icon .bar:nth-child(7) { height: 16px; animation-delay: 0.9s; }

@keyframes waveBar {
    0%, 100% { transform: scaleY(0.4); opacity: 0.2; }
    50%      { transform: scaleY(1); opacity: 0.5; }
}

/* ── buttons ──────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.65rem 1.6rem;
    border: none;
    cursor: pointer;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-deep);
}
.btn-primary:hover {
    filter: brightness(1.15);
    box-shadow: 0 0 24px var(--accent-dim);
}
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    color: var(--text);
    border-color: var(--border-hover);
}

/* ── progress spinner ─────────────────────────── */
.hidden { display: none !important; }

.spinner-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}
.spinner {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner-wrap p {
    color: var(--text-dim);
    font-size: 0.8rem;
    font-family: var(--mono-font);
    letter-spacing: 0.5px;
}

/* ── mode toggle ──────────────────────────────── */
.mode-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.toggle-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text);
}
.toggle-label input[type="checkbox"] { display: none; }
.toggle-slider {
    position: relative;
    width: 36px;
    height: 20px;
    background: var(--border);
    border-radius: 10px;
    transition: background 0.2s;
}
.toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px; left: 2px;
    width: 16px; height: 16px;
    background: var(--text);
    border-radius: 50%;
    transition: transform 0.2s;
}
.toggle-label input:checked + .toggle-slider {
    background: var(--accent);
}
.toggle-label input:checked + .toggle-slider::after {
    transform: translateX(16px);
}
.toggle-hint {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ── progress bar ────────────────────────────── */
.progress-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0 1rem;
}
.progress-bar {
    width: 100%;
    max-width: 320px;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s ease-out;
}
.progress-wrap p {
    color: var(--text-dim);
    font-size: 0.8rem;
    font-family: var(--mono-font);
    letter-spacing: 0.5px;
}

/* ── result card ──────────────────────────────── */
.result {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    animation: result-in 0.3s ease-out;
}
@keyframes result-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}
.result.match { border-left: 2px solid var(--accent); }
.result.no-match { border-left: 2px solid var(--warm); }
.result h2 {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}
.result .track-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-bottom: 0.6rem;
}
.result .track-info span {
    color: var(--text-dim);
    font-size: 0.82rem;
}
.result .meta {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-family: var(--mono-font);
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

/* ── tool grid (home page) ────────────────────── */
.features h2 {
    font-family: var(--mono-font);
    font-size: 0.65rem;
    font-weight: 400;
    text-align: center;
    color: var(--text-dim);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.tool-card {
    position: relative;
    overflow: hidden;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    transition: background 0.3s, border-color 0.3s;
    text-decoration: none;
    color: var(--text);
}
.tool-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
        300px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        var(--glow-card),
        transparent 40%
    );
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
}
.tool-card:hover::before { opacity: 1; }
.tool-card:hover { background: var(--bg-mid); border-color: var(--border-hover); }
.tool-card:hover h3 { color: var(--accent); }

.tool-icon {
    font-size: 1.5rem;
    margin-bottom: 0.6rem;
    opacity: 0.8;
}

.tool-card h3 {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}
.tool-card p {
    font-size: 0.82rem;
    font-weight: 300;
    color: var(--text-dim);
    line-height: 1.65;
}

/* ── metronome ────────────────────────────────── */
.metronome-wrap {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}

.metronome-display {
    margin-bottom: 1.5rem;
}

.bpm-display {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 5rem;
    line-height: 1;
    color: var(--text);
}
.bpm-label {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.beat-dots {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.beat-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1.5px solid var(--border-hover);
    background: rgba(96, 160, 255, 0.06);
    transition: background 0.08s, box-shadow 0.08s, transform 0.08s;
}
.beat-dot.active { transform: scale(1.15); }
.beat-dot.active {
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}
.beat-dot.accent.active {
    background: var(--warm);
    box-shadow: 0 0 12px var(--warm-glow);
}

.bpm-slider {
    width: 100%;
    margin-bottom: 1.5rem;
    accent-color: var(--accent);
}

.metronome-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.metronome-play {
    min-width: 100px;
}
.metronome-play.playing {
    background: var(--warm);
}

.metronome-label {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 0.5px;
}

.metronome-select {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--mono-font);
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    cursor: pointer;
}

/* ── tap BPM ──────────────────────────────────── */
.tap-wrap {
    max-width: 400px;
    margin: 0 auto;
    text-align: center;
}

.tap-display {
    margin-bottom: 0.5rem;
}

.tap-bpm {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 6rem;
    line-height: 1;
    color: var(--text);
}
.tap-label {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.tap-stability {
    font-family: var(--mono-font);
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    margin-bottom: 1.5rem;
    min-height: 1.2em;
}
.tap-stability.stable { color: var(--accent); }
.tap-stability.moderate { color: var(--warm); }
.tap-stability.unstable { color: var(--text-dim); }

.tap-area {
    width: 100%;
    padding: 4rem 3rem;
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 1.8rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--surface) 0%, var(--surface-solid) 100%);
    border: 2px solid var(--border-hover);
    color: var(--text);
    cursor: pointer;
    transition: all 0.1s ease;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    position: relative;
}
.tap-area::after {
    content: "press any key or click";
    display: block;
    font-family: var(--mono-font);
    font-weight: 400;
    font-size: 0.65rem;
    letter-spacing: 1px;
    color: var(--text-dim);
    margin-top: 0.8rem;
}
.tap-area:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-dim);
}
.tap-area:active, .tap-area.tapped {
    background: var(--accent-dim);
    border-color: var(--accent);
    transform: scale(0.97);
    box-shadow: 0 0 40px var(--accent-glow);
}

.tap-actions {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.tap-info {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ── Camelot wheel ────────────────────────────── */
.camelot-wrap {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
}

.camelot-svg-container {
    width: 360px;
    max-width: 100%;
}

#camelot-svg {
    width: 100%;
    height: auto;
}

.camelot-info {
    flex: 1;
    min-width: 200px;
    max-width: 300px;
}

.camelot-hint {
    color: var(--text-muted);
    font-family: var(--mono-font);
    font-size: 0.8rem;
}

.camelot-selected {
    margin-bottom: 1rem;
}

.camelot-code {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 3rem;
    color: var(--text);
    line-height: 1;
}

.camelot-key {
    font-family: var(--mono-font);
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

.camelot-compat {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
}

.compat-label {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    margin-right: 0.3rem;
}

.compat-tag {
    display: inline-block;
    font-family: var(--mono-font);
    font-size: 0.72rem;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--border);
    color: var(--accent);
    letter-spacing: 0.3px;
}

.key-compat {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

/* ── pitch detector / tuner ──────────────────── */
.tuner-wrap {
    max-width: 400px;
    margin: 0 auto;
    text-align: center;
}

.tuner-gauge {
    margin-bottom: 2rem;
}

.tuner-cents-bar {
    position: relative;
    height: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    margin-bottom: 0.5rem;
}

.tuner-cents-center {
    position: absolute;
    left: 50%;
    top: -2px;
    width: 2px;
    height: 12px;
    background: var(--text-muted);
    transform: translateX(-50%);
}

.tuner-cents-indicator {
    position: absolute;
    left: 50%;
    top: -3px;
    width: 10px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: left 0.1s ease;
}
.tuner-cents-indicator.in-tune {
    background: #4ade80;
    box-shadow: 0 0 12px rgba(74, 222, 128, 0.4);
}

.tuner-cents-labels {
    display: flex;
    justify-content: space-between;
    font-family: var(--mono-font);
    font-size: 0.6rem;
    color: var(--text-muted);
}

.tuner-display {
    margin-bottom: 2rem;
}

.tuner-note {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 5rem;
    line-height: 1;
    color: var(--text);
}

.tuner-freq {
    font-family: var(--mono-font);
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

.tuner-cents {
    font-family: var(--mono-font);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.tuner-hint {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.8rem;
}

/* ── audio cutter ─────────────────────────────── */
.cutter-wrap {
    margin-top: 1.5rem;
}

.waveform-container {
    position: relative;
    border: 1px solid var(--border);
    background: var(--surface);
    overflow: hidden;
}

#waveform-canvas {
    display: block;
    width: 100%;
}

.trim-handle {
    position: absolute;
    top: 0;
    width: 8px;
    height: 100%;
    background: var(--accent);
    cursor: ew-resize;
    z-index: 5;
    opacity: 0.8;
}
.trim-handle:hover { opacity: 1; }
.trim-handle-left { left: 0; border-radius: 2px 0 0 2px; }
.trim-handle-right { left: 100%; transform: translateX(-100%); border-radius: 0 2px 2px 0; }

.trim-region {
    position: absolute;
    top: 0;
    height: 100%;
    background: var(--accent-dim);
    pointer-events: none;
    z-index: 2;
}

.playhead {
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: var(--warm);
    z-index: 6;
    pointer-events: none;
}

.cutter-times {
    display: flex;
    justify-content: space-between;
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-dim);
    padding: 0.5rem 0;
}

.cutter-controls {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    align-items: center;
    margin-top: 1rem;
}

/* ── pills (genre selector etc.) ─────────────── */
.pill {
    background: var(--bg-card, var(--surface));
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.35rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}
.pill:hover { border-color: var(--accent); }
.pill.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── about page ──────────────────────────────── */
.about-content {
    max-width: 640px;
    margin: 0 auto;
}
.about-content h2 {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 2rem 0 0.8rem;
    color: var(--text);
}
.about-content p, .about-content li {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.7;
}
.about-content ul {
    padding-left: 1.2rem;
}
.about-content li {
    margin-bottom: 0.4rem;
}

/* ── Mix Analyzer Report Card ────────────────── */

/* Score hero */
.mix-score-hero {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem 0 1.2rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.2rem;
}
.mix-grade-ring {
    position: relative;
    width: 96px;
    height: 96px;
    flex-shrink: 0;
}
.mix-grade-ring svg {
    width: 96px;
    height: 96px;
    transform: rotate(-90deg);
}
.mix-grade-ring .ring-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 4;
}
.mix-grade-ring .ring-fill {
    fill: none;
    stroke-width: 4;
    stroke-linecap: round;
    transition: stroke-dashoffset 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.mix-grade-letter {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 2.4rem;
    line-height: 1;
    letter-spacing: -0.02em;
}
.mix-score-body {
    flex: 1;
    min-width: 0;
}
.mix-score-numeric {
    font-family: var(--mono-font);
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0.6rem;
}
.mix-score-numeric strong {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text);
}
.mix-sub-scores {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}
.mix-sub-score {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.mix-sub-score-label {
    font-family: var(--mono-font);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}
.mix-sub-score-bar {
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    overflow: hidden;
}
.mix-sub-score-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.mix-sub-score-val {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-dim);
}
.mix-summary-line {
    font-family: var(--mono-font);
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 0.6rem;
    letter-spacing: 0.3px;
    display: flex;
    flex-wrap: wrap;
    gap: 0.15rem 0.75rem;
}

/* Report waveform area */
.mix-waveform-wrap {
    position: relative;
    border-radius: 8px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 0.5rem;
}
.mix-waveform-wrap canvas {
    display: block;
    width: 100%;
    cursor: crosshair;
}
.mix-wf-time-axis {
    display: flex;
    justify-content: space-between;
    padding: 0 4px;
    font-family: var(--mono-font);
    font-size: 0.55rem;
    color: var(--text-muted);
    margin-top: 2px;
    margin-bottom: 0.6rem;
}

/* Transition markers tooltip on hover */
.mix-marker-tooltip {
    position: absolute;
    top: -24px;
    transform: translateX(-50%);
    font-family: var(--mono-font);
    font-size: 0.6rem;
    padding: 2px 6px;
    border-radius: 3px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
}

/* Transition list */
.mix-transitions-header {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.mix-transition-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    background: var(--surface);
    border: 1px solid var(--border);
    margin-bottom: 0.4rem;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.mix-transition-card:hover {
    border-color: var(--border-hover);
    background: var(--surface-solid);
}
.mix-transition-card.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-glow);
}
.mix-tc-led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 6px currentColor;
}
.mix-tc-time {
    font-family: var(--mono-font);
    font-size: 0.8rem;
    font-weight: 500;
    width: 3.5rem;
    flex-shrink: 0;
}
.mix-tc-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem 0.6rem;
    font-size: 0.7rem;
    color: var(--text-dim);
}
.mix-tc-info .tag {
    font-family: var(--mono-font);
    font-size: 0.6rem;
    padding: 1px 5px;
    border-radius: 3px;
    background: var(--accent-dim);
    color: var(--accent);
    letter-spacing: 0.3px;
}
.mix-tc-score {
    font-family: var(--mono-font);
    font-size: 0.75rem;
    font-weight: 500;
    flex-shrink: 0;
}

/* Transition detail (expanded below waveform) */
.mix-detail-card {
    padding: 1rem;
    border-radius: 8px;
    background: var(--surface);
    border: 1px solid var(--accent);
    border-left: 3px solid var(--accent);
    margin-bottom: 1rem;
    animation: fadeSlideIn 0.25s ease-out;
}
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}
.mix-detail-header {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 0.6rem;
}
.mix-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.6rem;
}
.mix-detail-item label {
    display: block;
    font-family: var(--mono-font);
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 0.15rem;
}
.mix-detail-item span {
    font-family: var(--mono-font);
    font-size: 0.8rem;
}

/* Issues list */
.mix-issues-header {
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}
.mix-issue-row {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.35rem 0;
    font-size: 0.75rem;
    border-bottom: 1px solid var(--border);
}
.mix-issue-row:last-child { border-bottom: none; }
.mix-issue-badge {
    font-family: var(--mono-font);
    font-size: 0.55rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 1px 5px;
    border-radius: 3px;
    flex-shrink: 0;
}
.mix-issue-badge.error   { background: rgba(239,68,68,0.15);  color: #ef4444; }
.mix-issue-badge.warning { background: rgba(245,158,11,0.15); color: #f59e0b; }
.mix-issue-badge.info    { background: rgba(96,160,255,0.1);  color: var(--accent); }
.mix-issue-time {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
    flex-shrink: 0;
    width: 3rem;
}
.mix-issue-msg {
    color: var(--text-dim);
    flex: 1;
}

/* Status colors */
.clr-locked      { color: #4ade80; }
.clr-slight-drift { color: #f59e0b; }
.clr-lost        { color: #ef4444; }
.clr-error       { color: #ef4444; }
.bg-locked       { background: #4ade80; }
.bg-slight-drift { background: #f59e0b; }
.bg-lost         { background: #ef4444; }
.bg-error        { background: #ef4444; }

/* "Analyze another" link */
.mix-analyze-again {
    display: inline-block;
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--accent);
    cursor: pointer;
    margin-top: 1rem;
    opacity: 0.7;
    transition: opacity 0.2s;
}
.mix-analyze-again:hover { opacity: 1; }

/* No transitions banner */
.mix-info-banner {
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

@media (max-width: 640px) {
    .mix-score-hero { flex-direction: column; text-align: center; gap: 1rem; }
    .mix-sub-scores { grid-template-columns: repeat(2, 1fr); }
    .mix-summary-line { justify-content: center; }
    .mix-detail-grid { grid-template-columns: 1fr 1fr; }
}

/* ── ad slots (empty placeholders) ────────────── */
.ad-slot {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}
.ad-leaderboard {
    min-height: 0;
    margin-top: 0.5rem;
}
.ad-rectangle {
    min-height: 0;
    margin-bottom: 0.5rem;
}

/* ── footer ───────────────────────────────────── */
footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-family: var(--mono-font);
    font-size: 0.65rem;
    border-top: 1px solid var(--border);
    letter-spacing: 0.5px;
}
footer a {
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.2s;
}
footer a:hover { color: var(--text); }

/* ── responsive ───────────────────────────────── */
@media (max-width: 900px) {
    .tool-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .camelot-wrap { flex-direction: column; align-items: center; }
    .camelot-info { max-width: 100%; text-align: center; }
    .nav-right { gap: 0.5rem; }
    .nav-right a { font-size: 0.6rem; }
}

@media (max-width: 640px) {
    nav { padding: 1rem 1.2rem; }
    main { padding: 1.2rem; }
    .hero { padding: 3rem 0 1.5rem; }
    .hero h1 { font-size: 2.2rem; }
    .upload-area { padding: 2rem 1.2rem; }
    .tool-grid { grid-template-columns: 1fr; gap: 6px; }
    .btn { padding: 0.6rem 1.2rem; font-size: 0.8rem; }
    .tap-area { padding: 5rem 2rem; }
    .bpm-display, .tap-bpm { font-size: 4rem; }
}

@media (max-width: 380px) {
    .nav-right a:not(:first-child):not(:last-child) { display: none; }
}

/* ── reduced motion ───────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .particle { animation: none !important; display: none; }
    .upload-icon .bar { animation: none !important; }
    *, *::before, *::after { transition-duration: 0.01s !important; animation-duration: 0.01s !important; }
}