@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Rajdhani:wght@300;400;600;700&display=swap');

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f1a;
    --bg-card: #12121f;
    --accent-primary: #7c3aed;
    --accent-secondary: #06b6d4;
    --accent-glow: rgba(124, 58, 237, 0.4);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    --border-color: rgba(124, 58, 237, 0.25);
    --border-color2: rgba(6, 182, 212, 0.25);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Rajdhani', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 15% 20%, rgba(124,58,237,0.1) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 80%, rgba(6,182,212,0.1) 0%, transparent 55%);
    pointer-events: none;
    z-index: 0;
}

/* ── HEADER ── */
header {
    background: rgba(10,10,15,0.95);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    text-align: center;
    padding: 18px 20px 14px;
}

header h1 {
    font-family: 'Orbitron', monospace;
    font-size: clamp(18px, 4vw, 28px);
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
}

header p {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 3px;
}

/* ── MAIN ── */
.main-wrapper {
    flex: 1;
    position: relative;
    z-index: 1;
    padding: clamp(16px, 3vw, 28px);
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ── SECTION HEADER ── */
.section-header {
    text-align: center;
    margin-bottom: 4px;
}

.section-header h2 {
    font-family: 'Orbitron', monospace;
    font-size: clamp(16px, 3.5vw, 24px);
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 4px;
}

/* ── CARD ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: clamp(16px, 3vw, 24px);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

/* ── CONTROLS ── */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
    justify-content: center;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-group label {
    font-family: 'Orbitron', monospace;
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-secondary);
}

select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 9px 14px;
    font-family: 'Rajdhani', sans-serif;
    font-size: 14px;
    font-weight: 600;
    outline: none;
    transition: border-color 0.2s;
    min-width: 200px;
    cursor: pointer;
}

select:focus { border-color: var(--accent-primary); }
select option, select optgroup { background: #1a1a2e; }

.btn-generate {
    padding: 11px 28px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-family: 'Orbitron', monospace;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--accent-primary), #5b21b6);
    color: #fff;
    box-shadow: 0 0 18px rgba(124,58,237,0.35);
    transition: all 0.2s;
}

.btn-generate:hover {
    box-shadow: 0 0 28px rgba(124,58,237,0.65);
    transform: translateY(-2px);
}

.btn-generate:active { transform: translateY(0); }

/* ── SCALE INFO BAR ── */
.scale-info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 18px;
    min-height: 34px;
}

.scale-note-pill {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 5px 14px;
    font-family: 'Orbitron', monospace;
    font-size: 11px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: 1px;
    transition: all 0.2s;
}

.scale-note-pill.root {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 0 10px rgba(124,58,237,0.4);
}

.scale-note-pill.blue-note {
    background: linear-gradient(135deg, #1E90FF, #0050a0);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 0 10px rgba(30,144,255,0.4);
}

/* ── SCALE NAME DISPLAY ── */
.scale-name-display {
    text-align: center;
    margin-bottom: 14px;
}

.scale-name-display .scale-full-name {
    font-family: 'Orbitron', monospace;
    font-size: clamp(14px, 3vw, 20px);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.scale-name-display .scale-intervals {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-top: 4px;
}

/* ── FRETBOARD ── */
.fretboard-wrapper {
    overflow-x: auto;
    padding-bottom: 10px;
}

.fretboard-wrapper::-webkit-scrollbar {
    height: 6px;
}
.fretboard-wrapper::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}
.fretboard-wrapper::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 3px;
}

#mastil {
    display: inline-flex;
    flex-direction: column;
    gap: 0;
    min-width: max-content;
    background: #0d0d18;
    border-radius: 8px;
    padding: 8px 0;
    border: 1px solid rgba(124,58,237,0.15);
}

/* Fret numbers row */
.fret-numbers {
    display: flex;
    margin-bottom: 4px;
}

.fret-num-cell {
    width: 46px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Orbitron', monospace;
    font-size: 9px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.fret-num-cell:first-child { width: 38px; }

/* String rows */
.string-row {
    display: flex;
    align-items: center;
    position: relative;
}

.fret-cell {
    width: 46px;
    height: 44px;
    border-right: 3px solid #6b7280;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    flex-shrink: 0;
}

.fret-cell:first-child {
    border-right: 5px solid #d1d5db;
    width: 38px;
}

/* String line pseudo-element */
.fret-cell::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 1;
}

/* String thicknesses (high e = thinnest on top) */
.string-row:nth-child(2) .fret-cell::after  { height: 1px;   background: linear-gradient(to right, #d4d4d4, #a0a0a0); }
.string-row:nth-child(3) .fret-cell::after  { height: 1.5px; background: linear-gradient(to right, #c8c8c8, #989898); }
.string-row:nth-child(4) .fret-cell::after  { height: 2px;   background: linear-gradient(to right, #b8b8b8, #888); }
.string-row:nth-child(5) .fret-cell::after  { height: 2.5px; background: linear-gradient(to right, #a8a8a8, #787878); box-shadow: 0 1px 2px rgba(0,0,0,0.4); }
.string-row:nth-child(6) .fret-cell::after  { height: 3px;   background: linear-gradient(to right, #989898, #686868); box-shadow: 0 1px 3px rgba(0,0,0,0.5); }
.string-row:nth-child(7) .fret-cell::after  { height: 3.5px; background: linear-gradient(to right, #888, #585858); box-shadow: 0 1px 4px rgba(0,0,0,0.6); }

/* Note markers */
.note-marker {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    font-family: 'Orbitron', monospace;
    z-index: 3;
    position: relative;
    transition: transform 0.15s;
    cursor: default;
}

.note-marker:hover { transform: scale(1.2); }

.note-marker.regular {
    background: var(--accent-primary);
    color: #fff;
    box-shadow: 0 0 10px rgba(124,58,237,0.55);
}

.note-marker.root-note {
    background: linear-gradient(135deg, var(--accent-secondary), #0080a0);
    color: #fff;
    box-shadow: 0 0 14px rgba(6,182,212,0.7);
    border: 1px solid rgba(255,255,255,0.3);
}

.note-marker.blue-note {
    background: linear-gradient(135deg, #1E90FF, #0050a0);
    color: #fff;
    box-shadow: 0 0 10px rgba(30,144,255,0.55);
}

/* Inlay row */
.inlay-row {
    display: flex;
    margin-top: 6px;
}

.inlay-cell {
    width: 46px;
    height: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.inlay-cell:first-child { width: 38px; }

.inlay-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(124,58,237,0.45);
    border: 1px solid rgba(124,58,237,0.7);
}

.inlay-double {
    display: flex;
    gap: 4px;
}

/* ── PLACEHOLDER ── */
.placeholder {
    text-align: center;
    color: var(--text-muted);
    font-family: 'Orbitron', monospace;
    font-size: 13px;
    letter-spacing: 2px;
    padding: 30px 0;
}

/* ── LEGEND ── */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-top: 14px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.legend-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
}

.legend-swatch.root { background: var(--accent-secondary); box-shadow: 0 0 6px rgba(6,182,212,0.5); }
.legend-swatch.scale { background: var(--accent-primary); box-shadow: 0 0 6px rgba(124,58,237,0.5); }
.legend-swatch.blue { background: #1E90FF; box-shadow: 0 0 6px rgba(30,144,255,0.5); }

/* ── FOOTER ── */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    text-align: center;
    padding: 16px;
    position: relative;
    z-index: 1;
}

footer p {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

footer a {
    color: var(--accent-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover { color: var(--accent-primary); }

/* ── TOAST ── */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--bg-card);
    border: 1px solid var(--accent-primary);
    border-radius: 10px;
    padding: 10px 20px;
    font-size: 13px;
    color: var(--text-primary);
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    white-space: nowrap;
}

.toast.show { transform: translateX(-50%) translateY(0); }

@media (max-width: 600px) {
    select { min-width: 160px; }
}