/* ═══════════════════════════════════════════════════════════════
   Music Chart Database — Common Styles
   Shared reset, theme system, typography, and components
   ═══════════════════════════════════════════════════════════════ */

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }

/* ── Typography ─────────────────────────────────────────────── */
:root {
    --font:       'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --heading:    'Poppins', 'Roboto', sans-serif;
    --mono:       'Poppins', 'Roboto', sans-serif;  /* alias for legacy inline refs */
    --radius:     8px;
    --radius-lg:  12px;
    --transition: 0.2s ease;
}

/* ── Dark Theme (default) ───────────────────────────────────── */
[data-theme="dark"], :root {
    --bg:           #0e0e14;
    --bg-card:      #161620;
    --bg-input:     #1c1c2a;
    --bg-hover:     #22223a;
    --border:       #2a2a3e;
    --border-focus: #4a4a6a;
    --text:         #e8e8f0;
    --text-dim:     #9090a8;
    --text-faint:   #5a5a72;
    --shadow:       0 2px 20px rgba(0,0,0,0.4);
    --overlay-bg:   rgba(0,0,0,0.75);
    --loading-bg:   rgba(14,14,20,0.7);

    /* Shorthand aliases (used in admin inline styles) */
    --card:   var(--bg-card);
    --input:  var(--bg-input);
    --dim:    var(--text-dim);
    --faint:  var(--text-faint);

    /* Fixed semantic colours */
    --us:       #4e9af5;
    --uk:       #e05050;
    --intl:     #50c878;
    --green:    #50c878;
    --red:      #e05050;
    --blue:     #4e9af5;
    --orange:   #f08050;
    --spotify:  #1DB954;
    --gold:     #ffd700;
    --silver:   #c0c0c0;
    --bronze:   #cd7f32;
}

/* ── Light Theme ────────────────────────────────────────────── */
[data-theme="light"] {
    --bg:           #f4f4f8;
    --bg-card:      #ffffff;
    --bg-input:     #f0f0f5;
    --bg-hover:     #e8e8f0;
    --border:       #d4d4de;
    --border-focus: #a0a0b8;
    --text:         #1a1a2e;
    --text-dim:     #5a5a72;
    --text-faint:   #9090a8;
    --shadow:       0 2px 16px rgba(0,0,0,0.08);
    --overlay-bg:   rgba(0,0,0,0.5);
    --loading-bg:   rgba(244,244,248,0.7);

    /* Shorthand aliases */
    --card:   var(--bg-card);
    --input:  var(--bg-input);
    --dim:    var(--text-dim);
    --faint:  var(--text-faint);

    --us:       #2d7ad4;
    --uk:       #c04040;
    --intl:     #1a9050;
    --green:    #1a9050;
    --red:      #c04040;
    --blue:     #2d7ad4;
    --orange:   #d06830;
    --spotify:  #1aa34a;
    --gold:     #b8960a;
    --silver:   #808080;
    --bronze:   #9a5e20;
}

/* ── Accent: Electric Cyan ──────────────────────────────────── */
[data-accent="cyan"] {
    --accent:       #00d4ff;
    --accent-dim:   #0098b8;
    --accent-text:  #0e0e14;
    --accent-glow:  rgba(0,212,255,0.04);
    --accent-glow2: rgba(0,160,210,0.03);
    --accent-bg:    rgba(0,212,255,0.10);
    --accent-bg2:   rgba(0,212,255,0.06);
    --accent-border:rgba(0,212,255,0.25);
}
[data-theme="light"][data-accent="cyan"] {
    --accent:       #0098b8;
    --accent-dim:   #007a96;
    --accent-text:  #ffffff;
    --accent-bg:    rgba(0,152,184,0.08);
    --accent-bg2:   rgba(0,152,184,0.04);
    --accent-border:rgba(0,152,184,0.25);
}

/* ── Accent: Coral Flame ────────────────────────────────────── */
[data-accent="coral"] {
    --accent:       #ff6b6b;
    --accent-dim:   #c04848;
    --accent-text:  #ffffff;
    --accent-glow:  rgba(255,107,107,0.04);
    --accent-glow2: rgba(224,80,80,0.03);
    --accent-bg:    rgba(255,107,107,0.10);
    --accent-bg2:   rgba(255,107,107,0.06);
    --accent-border:rgba(255,107,107,0.25);
}
[data-theme="light"][data-accent="coral"] {
    --accent:       #d94545;
    --accent-dim:   #b83030;
    --accent-text:  #ffffff;
    --accent-bg:    rgba(217,69,69,0.08);
    --accent-bg2:   rgba(217,69,69,0.04);
    --accent-border:rgba(217,69,69,0.25);
}

/* ── Accent: Violet Pulse ───────────────────────────────────── */
[data-accent="violet"] {
    --accent:       #a78bfa;
    --accent-dim:   #7c5cbf;
    --accent-text:  #0e0e14;
    --accent-glow:  rgba(167,139,250,0.04);
    --accent-glow2: rgba(124,92,191,0.03);
    --accent-bg:    rgba(167,139,250,0.10);
    --accent-bg2:   rgba(167,139,250,0.06);
    --accent-border:rgba(167,139,250,0.25);
}
[data-theme="light"][data-accent="violet"] {
    --accent:       #7c5cbf;
    --accent-dim:   #6348a0;
    --accent-text:  #ffffff;
    --accent-bg:    rgba(124,92,191,0.08);
    --accent-bg2:   rgba(124,92,191,0.04);
    --accent-border:rgba(124,92,191,0.25);
}

/* ── Accent: Emerald ────────────────────────────────────────── */
[data-accent="emerald"] {
    --accent:       #34d399;
    --accent-dim:   #1a9668;
    --accent-text:  #0e0e14;
    --accent-glow:  rgba(52,211,153,0.04);
    --accent-glow2: rgba(52,211,153,0.03);
    --accent-bg:    rgba(52,211,153,0.10);
    --accent-bg2:   rgba(52,211,153,0.06);
    --accent-border:rgba(52,211,153,0.25);
}
[data-theme="light"][data-accent="emerald"] {
    --accent:       #059669;
    --accent-dim:   #047a56;
    --accent-text:  #ffffff;
    --accent-bg:    rgba(5,150,105,0.08);
    --accent-bg2:   rgba(5,150,105,0.04);
    --accent-border:rgba(5,150,105,0.25);
}

/* ── Accent: Sunset Orange ──────────────────────────────────── */
[data-accent="sunset"] {
    --accent:       #f59e0b;
    --accent-dim:   #b87308;
    --accent-text:  #0e0e14;
    --accent-glow:  rgba(245,158,11,0.04);
    --accent-glow2: rgba(184,115,8,0.03);
    --accent-bg:    rgba(245,158,11,0.10);
    --accent-bg2:   rgba(245,158,11,0.06);
    --accent-border:rgba(245,158,11,0.25);
}
[data-theme="light"][data-accent="sunset"] {
    --accent:       #d97706;
    --accent-dim:   #b86005;
    --accent-text:  #ffffff;
    --accent-bg:    rgba(217,119,6,0.08);
    --accent-bg2:   rgba(217,119,6,0.04);
    --accent-border:rgba(217,119,6,0.25);
}

/* ── Accent: Hot Pink ───────────────────────────────────────── */
[data-accent="pink"] {
    --accent:       #f472b6;
    --accent-dim:   #c04080;
    --accent-text:  #0e0e14;
    --accent-glow:  rgba(244,114,182,0.04);
    --accent-glow2: rgba(192,64,128,0.03);
    --accent-bg:    rgba(244,114,182,0.10);
    --accent-bg2:   rgba(244,114,182,0.06);
    --accent-border:rgba(244,114,182,0.25);
}
[data-theme="light"][data-accent="pink"] {
    --accent:       #db2777;
    --accent-dim:   #b81e60;
    --accent-text:  #ffffff;
    --accent-bg:    rgba(219,39,119,0.08);
    --accent-bg2:   rgba(219,39,119,0.04);
    --accent-border:rgba(219,39,119,0.25);
}


/* ═══════════════════════════════════════════════════════════════
   Base Elements
   ═══════════════════════════════════════════════════════════════ */

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Subtle background texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 0%, var(--accent-glow, rgba(0,0,0,0)) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(78,154,245,0.03) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
    transition: background 0.3s ease;
}

[data-theme="light"] body::before {
    background:
        radial-gradient(ellipse at 20% 0%, var(--accent-glow, rgba(0,0,0,0)) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(78,154,245,0.02) 0%, transparent 60%);
}

a { color: var(--accent); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: 0.85; }


/* ═══════════════════════════════════════════════════════════════
   Theme Picker Widget
   ═══════════════════════════════════════════════════════════════ */

.theme-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Dark / Light toggle */
.theme-toggle {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 13px;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
    flex-shrink: 0;
}

.theme-toggle::before {
    content: '🌙';
    position: absolute;
    top: 2px;
    left: 3px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    border-radius: 50%;
    background: var(--accent);
    transition: transform 0.3s ease, background 0.3s ease;
}

[data-theme="light"] .theme-toggle::before {
    content: '☀️';
    transform: translateX(21px);
}

.theme-toggle:hover {
    border-color: var(--accent);
}

/* Accent colour dropdown */
.accent-select {
    padding: 5px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.78rem;
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition);
}

.accent-select:focus,
.accent-select:hover {
    border-color: var(--accent);
}

.accent-select option {
    background: var(--bg-card);
    color: var(--text);
}


/* ═══════════════════════════════════════════════════════════════
   Shared Components
   ═══════════════════════════════════════════════════════════════ */

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn:hover { opacity: 0.88; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; filter: none; }
.btn:active:not(:disabled) { transform: scale(0.98); }

.btn-primary { background: var(--accent); color: var(--accent-text, #0e0e14); }
.btn-green   { background: var(--green); color: #fff; }
.btn-blue    { background: var(--blue); color: #fff; }
.btn-danger  { background: var(--red); color: #fff; }
.btn-outline,
.btn-ghost {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-dim);
}
.btn-outline:hover,
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-sm { padding: 6px 14px; font-size: 0.78rem; }
.btn-xs { padding: 4px 10px; font-size: 0.72rem; }

.btn-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

/* ── Form Fields ────────────────────────────────────────────── */
.field { flex: 1; min-width: 140px; }

.field label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-dim);
    margin-bottom: 6px;
    font-weight: 500;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition), background var(--transition);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    border-color: var(--accent);
}

.field input::placeholder,
.field textarea::placeholder {
    color: var(--text-faint);
}

.field select { cursor: pointer; }
.field select option { background: var(--bg-card); }
.field textarea { resize: vertical; min-height: 60px; line-height: 1.4; }
.field input:disabled { opacity: 0.4; cursor: not-allowed; }

.form-row {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: background var(--transition), border-color var(--transition);
    overflow: hidden;
}

.card h2 {
    font-family: var(--heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card h2 .icon { font-size: 1.2rem; }
.card p.desc { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 16px; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.badge-us      { background: rgba(78,154,245,0.15); color: var(--us); }
.badge-uk      { background: rgba(224,80,80,0.15);  color: var(--uk); }
.badge-intl    { background: rgba(80,200,120,0.15); color: var(--intl); }
.badge-spotify { background: rgba(29,185,84,0.15);  color: var(--spotify); }
.badge-dim     { background: rgba(255,255,255,0.04); color: var(--text-faint); }
.badge-match   { background: rgba(80,200,120,0.15); color: var(--green); }
.badge-no-match{ background: rgba(136,136,160,0.1); color: var(--text-dim); }

[data-theme="light"] .badge-us   { background: rgba(45,122,212,0.10); }
[data-theme="light"] .badge-uk   { background: rgba(192,64,64,0.10); }
[data-theme="light"] .badge-intl { background: rgba(26,144,80,0.10); }
[data-theme="light"] .badge-dim  { background: rgba(0,0,0,0.04); }

/* ── Tables ─────────────────────────────────────────────────── */
.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.results-table th {
    text-align: left;
    padding: 10px 12px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
}

.results-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

[data-theme="dark"] .results-table td {
    border-bottom-color: rgba(42,42,58,0.4);
}

.results-table tr:last-child td { border-bottom: none; }

/* ── Status Messages ────────────────────────────────────────── */
.status-msg,
.status-bar {
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.status-msg { display: none; margin-top: 16px; margin-bottom: 0; }
.status-msg.visible { display: block; }

.status-bar.info,
.status-msg.running  { background: rgba(78,154,245,0.1); border: 1px solid rgba(78,154,245,0.3); color: var(--blue); }
.status-bar.success,
.status-msg.success  { background: rgba(80,200,120,0.1); border: 1px solid rgba(80,200,120,0.3); color: var(--green); }
.status-bar.warn,
.status-msg.warn     { background: var(--accent-bg); border: 1px solid var(--accent-border); color: var(--accent); }
.status-msg.error    { background: rgba(224,80,80,0.1); border: 1px solid rgba(224,80,80,0.3); color: var(--red); }

/* ── Spinners ───────────────────────────────────────────────── */
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-inline {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast Notifications ────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--green);
    border-radius: var(--radius);
    color: var(--green);
    font-size: 0.85rem;
    z-index: 999;
    max-width: 400px;
    animation: fadeInUp 0.3s ease;
    box-shadow: var(--shadow);
}
.toast.error { border-color: var(--red); color: var(--red); }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Utility Classes ────────────────────────────────────────── */
.mono  { font-family: 'Roboto Mono', 'Courier New', monospace; font-size: 0.78rem; }
.dim   { color: var(--text-dim); }
.faint { color: var(--text-faint); }

/* ── Scrollbar Styling ──────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }