/* =========================================================================
   Through the winds — global stylesheet
   Dark glassmorphism, aurora gradients, modern typography
   ========================================================================= */

:root {
    --bg-base: #07070d;
    --bg-grad-1: #1b1331;
    --bg-grad-2: #0c1426;
    --bg-grad-3: #07070d;

    --glass-bg: rgba(255, 255, 255, 0.035);
    --glass-bg-strong: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-strong: rgba(255, 255, 255, 0.16);

    --text: #ecedf2;
    --text-soft: #b6b8c5;
    --text-muted: #7e8195;
    --text-dim: #565a6e;

    --accent-gold: #d8b878;
    --accent-gold-soft: rgba(216, 184, 120, 0.18);
    --accent-sky: #7cc1ff;
    --accent-sky-soft: rgba(124, 193, 255, 0.18);
    --accent-rose: #e08aa8;

    --shadow-glass: 0 1px 0 0 rgba(255, 255, 255, 0.06) inset,
                    0 30px 60px -25px rgba(0, 0, 0, 0.6);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;

    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-display: 'Bricolage Grotesque', 'Inter', sans-serif;
    --font-serif: 'Instrument Serif', Georgia, serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg-base);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
}

body {
    background:
        radial-gradient(900px 700px at 12% -10%, rgba(125, 89, 220, 0.22), transparent 60%),
        radial-gradient(800px 600px at 88% 0%, rgba(64, 130, 220, 0.18), transparent 60%),
        radial-gradient(1100px 800px at 50% 110%, rgba(216, 184, 120, 0.10), transparent 65%),
        linear-gradient(180deg, var(--bg-grad-1) 0%, var(--bg-grad-2) 35%, var(--bg-grad-3) 100%);
    background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--accent-gold-soft); color: var(--text); }

/* glass utility */
.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    box-shadow: var(--shadow-glass);
}

/* =========================================================================
   Login page
   ========================================================================= */

.login-stage {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 24px;
}

.login-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.65;
    pointer-events: none;
    animation: orb-drift 22s ease-in-out infinite alternate;
}
.orb-1 { width: 480px; height: 480px; background: #7d59dc; top: -120px; left: -100px; }
.orb-2 { width: 520px; height: 520px; background: #e08aa8; bottom: -160px; right: -140px; animation-duration: 28s; }
.orb-3 { width: 360px; height: 360px; background: #d8b878; top: 30%; right: 15%; opacity: 0.4; animation-duration: 18s; }

@keyframes orb-drift {
    0%   { transform: translate(0, 0) scale(1); }
    50%  { transform: translate(40px, -30px) scale(1.08); }
    100% { transform: translate(-30px, 25px) scale(0.95); }
}

.login-card {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 440px;
    padding: 44px 38px;
    background: rgba(18, 16, 30, 0.55);
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(28px) saturate(160%);
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    box-shadow:
        0 1px 0 0 rgba(255,255,255,0.08) inset,
        0 50px 100px -30px rgba(0, 0, 0, 0.7);
}

.login-eyebrow {
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.login-title {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    font-size: 44px;
    line-height: 1.05;
    margin: 0 0 6px;
    background: linear-gradient(180deg, #ffffff 0%, #c9c9d6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-sub {
    color: var(--text-soft);
    margin: 0 0 32px;
    font-size: 14px;
}

.login-error {
    margin-bottom: 18px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: rgba(224, 138, 168, 0.10);
    border: 1px solid rgba(224, 138, 168, 0.28);
    color: #f3b6c8;
    font-size: 13px;
}

.login-form { display: flex; flex-direction: column; gap: 16px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field-label {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.field input {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text);
    padding: 12px 14px;
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.field input:focus {
    border-color: rgba(216, 184, 120, 0.5);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 4px var(--accent-gold-soft);
}

.btn-primary {
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 18px;
    border-radius: 12px;
    border: 1px solid rgba(216, 184, 120, 0.45);
    background: linear-gradient(180deg, rgba(216, 184, 120, 0.22), rgba(216, 184, 120, 0.10));
    color: #fff5d8;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn-primary:hover {
    transform: translateY(-1px);
    background: linear-gradient(180deg, rgba(216, 184, 120, 0.32), rgba(216, 184, 120, 0.14));
    box-shadow: 0 14px 30px -10px rgba(216, 184, 120, 0.35);
}
.btn-primary:active { transform: translateY(0); }


/* =========================================================================
   Track page
   ========================================================================= */

.app-shell { min-height: 100vh; }

.cover-bg {
    position: fixed;
    inset: -10%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(80px) brightness(0.55) saturate(120%);
    transform: scale(1.18);
    z-index: -2;
    transition: background-image 0.6s ease;
}
.cover-bg-overlay {
    position: fixed;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(7,7,13,0.55) 0%, rgba(7,7,13,0.78) 60%, rgba(7,7,13,0.92) 100%);
    z-index: -1;
}

.track-shell {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 28px;
    max-width: 1480px;
    margin: 0 auto;
    padding: 28px 28px 56px;
}

/* ---- Album rail (left sidebar) ---- */

.album-rail {
    position: sticky;
    top: 28px;
    height: calc(100vh - 56px);
    display: flex;
    flex-direction: column;
    padding: 22px 18px;
    overflow: hidden;
}

.rail-head {
    padding: 4px 8px 18px;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 12px;
}
.rail-album-eyebrow {
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.rail-album-title {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 24px;
    line-height: 1.1;
    color: var(--text);
}

.rail-list {
    list-style: none;
    margin: 0;
    padding: 0;
    overflow-y: auto;
    flex: 1;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.12) transparent;
}
.rail-list::-webkit-scrollbar { width: 6px; }
.rail-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }

.rail-item a {
    display: grid;
    grid-template-columns: 32px 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 10px 10px;
    border-radius: 10px;
    color: var(--text-soft);
    transition: background 0.15s ease, color 0.15s ease;
}
.rail-item a:hover {
    background: rgba(255,255,255,0.04);
    color: var(--text);
}
.rail-item.active a {
    background: linear-gradient(90deg, rgba(216,184,120,0.18), rgba(216,184,120,0.04));
    color: var(--text);
    border: 1px solid rgba(216,184,120,0.30);
    padding: 9px 9px;
}
.rail-item.active .rail-num { color: var(--accent-gold); }

.rail-num {
    font-family: var(--font-display);
    font-variant-numeric: tabular-nums;
    font-size: 13px;
    color: var(--text-dim);
    text-align: right;
}
.rail-title {
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}
.rail-tag {
    font-size: 9px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    background: rgba(255,255,255,0.05);
    padding: 2px 6px;
    border-radius: 4px;
}
.rail-dur {
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    color: var(--text-muted);
}

.rail-foot {
    padding-top: 12px;
    border-top: 1px solid var(--glass-border);
    margin-top: 12px;
}
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-soft);
    font-family: inherit;
    font-size: 12px;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.04);
    border-color: var(--glass-border-strong);
    color: var(--text);
}

/* ---- Main stage ---- */

.track-stage { min-width: 0; display: flex; flex-direction: column; gap: 22px; }

.track-head { padding: 14px 4px 0; }
.track-eyebrow {
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
}
.track-title {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(40px, 5vw, 64px);
    line-height: 1.02;
    letter-spacing: -0.01em;
    margin: 0;
    background: linear-gradient(180deg, #ffffff 0%, #cfcfdb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    outline: none;
}
.track-title:focus,
.track-title:focus-visible { outline: none; }
.track-note {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 13px;
    letter-spacing: 0.06em;
}

/* ---- Player card ---- */

.player-card {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    padding: 22px;
    align-items: stretch;
}

.player-cover {
    width: 240px;
    aspect-ratio: 3 / 4;
    border-radius: 14px;
    overflow: hidden;
    box-shadow:
        0 1px 0 0 rgba(255,255,255,0.10) inset,
        0 30px 60px -20px rgba(0,0,0,0.7),
        0 0 60px -20px rgba(216,184,120,0.30);
    position: relative;
}
.player-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }

.player-body { display: flex; flex-direction: column; min-width: 0; }
.player-album {
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.player-track {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 22px;
    color: var(--text);
}
.player-duration {
    font-variant-numeric: tabular-nums;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
    margin-bottom: 18px;
}

audio#ttwAudio {
    width: 100%;
    height: 44px;
    border-radius: 10px;
    color-scheme: dark;
    margin-bottom: 16px;
    filter: saturate(0.9);
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: auto;
    flex-wrap: wrap;
}
.btn-step {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border-radius: 10px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--glass-border);
    color: var(--text-soft);
    font-size: 13px;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.12s ease;
}
.btn-step:hover {
    background: rgba(255,255,255,0.07);
    border-color: var(--glass-border-strong);
    color: var(--text);
    transform: translateY(-1px);
}
.btn-step.disabled {
    opacity: 0.35;
    pointer-events: none;
}

.autoadvance {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    color: var(--text-soft);
    font-size: 12px;
    letter-spacing: 0.06em;
    cursor: pointer;
    user-select: none;
}
.autoadvance input[type=checkbox] {
    appearance: none;
    width: 30px;
    height: 18px;
    border-radius: 999px;
    background: rgba(255,255,255,0.10);
    border: 1px solid var(--glass-border);
    position: relative;
    cursor: pointer;
    transition: background 0.18s ease;
}
.autoadvance input[type=checkbox]::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 12px;
    height: 12px;
    background: var(--text-soft);
    border-radius: 50%;
    transition: transform 0.18s ease, background 0.18s ease;
}
.autoadvance input[type=checkbox]:checked {
    background: rgba(216,184,120,0.35);
    border-color: rgba(216,184,120,0.55);
}
.autoadvance input[type=checkbox]:checked::before {
    transform: translateX(12px);
    background: var(--accent-gold);
}

/* ---- Lyrics grid ---- */

.lyrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}

.lyrics-col {
    padding: 26px 28px;
    min-height: 200px;
}

.lyrics-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--glass-border);
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    padding: 3px 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    font-size: 10px;
    color: var(--text);
    letter-spacing: 0.16em;
}

.lyrics-body {
    font-size: 15px;
    line-height: 1.85;
    color: var(--text);
}

.lyrics-seg + .lyrics-seg { margin-top: 18px; }

.lyrics-seg.chorus {
    font-style: italic;
    color: var(--accent-gold);
    padding: 16px 20px;
    border-left: 2px solid rgba(216,184,120,0.45);
    background: linear-gradient(90deg, rgba(216,184,120,0.06), transparent 90%);
    border-radius: 0 8px 8px 0;
    margin: 18px 0;
    line-height: 1.9;
}
.lyrics-seg.chorus .lyrics-line { font-family: var(--font-serif); font-size: 21px; }

.lyrics-line { min-height: 1em; }
.lyrics-line:empty { height: 0.5em; }

/* ---- Instrumental card ---- */

.instrumental-card {
    padding: 64px 32px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    background: linear-gradient(180deg, rgba(125,89,220,0.08), rgba(255,255,255,0.02));
}
.instr-icon { color: var(--accent-sky); opacity: 0.85; margin-bottom: 6px; }
.instr-title {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 32px;
    background: linear-gradient(180deg, #ffffff 0%, #c9c9d6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.instr-sub { color: var(--text-soft); font-size: 14px; }

/* ---- error / 404 ---- */

.track-missing {
    max-width: 600px;
    margin: 120px auto;
    text-align: center;
    color: var(--text-soft);
}
.track-missing h1 { font-family: var(--font-serif); font-style: italic; }
.track-missing a {
    display: inline-block;
    margin-top: 20px;
    color: var(--accent-gold);
    border-bottom: 1px dashed rgba(216,184,120,0.5);
    padding-bottom: 2px;
}

/* ---- Blazor error UI override ---- */

#blazor-error-ui {
    background: rgba(224, 138, 168, 0.12);
    border-top: 1px solid rgba(224, 138, 168, 0.4);
    color: #f3b6c8;
    padding: 12px 24px;
    bottom: 0;
    left: 0;
    right: 0;
    display: none;
    position: fixed;
    z-index: 1000;
    backdrop-filter: blur(12px);
}
#blazor-error-ui .reload { color: #fff; text-decoration: underline; margin-left: 12px; }
#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
}