/* === Orthodox Chant Synthesizer — Styles === */

:root {
    --gold: #c8a84e;
    --gold-bright: #ffd700;
    --gold-dark: #8b6914;
    --crimson: #8b0000;
    --crimson-light: #a52a2a;
    --navy: #1a1a3e;
    --navy-deep: #0d0d24;
    --navy-light: #2a2a5e;
    --parchment: #f5e6c8;
    --parchment-dark: #d4c4a0;
    --wood: #3a2518;
    --wood-light: #5a3a28;
    --text-gold: #e8d5a0;
    --text-light: #c8b888;
    --bg-dark: #0a0a1a;
    --bg-panel: rgba(15, 15, 35, 0.85);
}

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

body {
    font-family: 'Cormorant Garamond', Georgia, serif;
    background: var(--bg-dark);
    color: var(--text-gold);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background pattern — subtle cross tessellation */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(200, 168, 78, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 100%, rgba(139, 0, 0, 0.06) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M29 8v16M29 36v16M21 28h16' stroke='%23c8a84e' stroke-width='0.3' opacity='0.08'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
}

/* Icon border at top */
.icon-border-top {
    height: 6px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--gold-dark) 15%,
        var(--gold-bright) 30%,
        var(--gold) 50%,
        var(--gold-bright) 70%,
        var(--gold-dark) 85%,
        transparent 100%
    );
    position: relative;
    z-index: 10;
}

.icon-border-top::after {
    content: '';
    display: block;
    height: 2px;
    margin-top: 2px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--crimson) 20%,
        var(--crimson-light) 50%,
        var(--crimson) 80%,
        transparent 100%
    );
}

/* Incense smoke particles */
.incense-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.smoke-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, rgba(200, 168, 78, 0.3), transparent);
    border-radius: 50%;
    animation: smokeRise linear forwards;
}

@keyframes smokeRise {
    0% {
        opacity: 0;
        transform: translateY(0) translateX(0) scale(1);
    }
    20% {
        opacity: 0.4;
    }
    100% {
        opacity: 0;
        transform: translateY(-400px) translateX(var(--drift)) scale(8);
    }
}

/* Header */
header {
    text-align: center;
    padding: 2.5rem 1rem 1.5rem;
    position: relative;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.cross-ornament {
    font-size: 2rem;
    color: var(--gold);
    text-shadow: 0 0 15px rgba(200, 168, 78, 0.5);
    line-height: 1;
}

.cross-ornament.small {
    font-size: 1.2rem;
}

h1 {
    font-family: 'Uncial Antiqua', 'Cinzel', serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 400;
    color: var(--gold-bright);
    text-shadow:
        0 0 20px rgba(255, 215, 0, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.08em;
}

.subtitle {
    font-family: 'Cinzel', serif;
    font-size: 1rem;
    color: var(--text-light);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: 0.3rem;
}

header {
    flex-wrap: wrap;
}

header .subtitle {
    flex-basis: 100%;
}

/* Main layout */
main {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
    position: relative;
    z-index: 5;
}

/* Icon Frame */
.icon-frame {
    width: 260px;
    margin: 0 auto 2rem;
    padding: 14px;
    background: linear-gradient(145deg, #2a2218, #1a1508);
    border: 4px solid var(--gold-dark);
    border-radius: 8px;
    box-shadow:
        0 0 30px rgba(200, 168, 78, 0.15),
        inset 0 0 20px rgba(200, 168, 78, 0.05),
        0 8px 32px rgba(0, 0, 0, 0.5);
    position: relative;
    cursor: pointer;
    transition: box-shadow 0.5s ease, transform 0.3s ease;
    overflow: hidden;
}

.icon-frame:hover {
    box-shadow:
        0 0 50px rgba(200, 168, 78, 0.25),
        inset 0 0 30px rgba(200, 168, 78, 0.08),
        0 8px 32px rgba(0, 0, 0, 0.5);
    transform: scale(1.02);
}

.icon-frame.active {
    box-shadow:
        0 0 60px rgba(255, 215, 0, 0.35),
        inset 0 0 30px rgba(200, 168, 78, 0.1),
        0 8px 32px rgba(0, 0, 0, 0.5);
    border-color: var(--gold-bright);
}

.icon-frame.active .icon-glow {
    opacity: 1;
}

/* Ornamental inner border for icon */
.icon-frame::before {
    content: '';
    position: absolute;
    inset: 6px;
    border: 1px solid var(--gold-dark);
    border-radius: 4px;
    opacity: 0.5;
    pointer-events: none;
    z-index: 2;
}

/* Outer ornamental border */
.icon-frame::after {
    content: '';
    position: absolute;
    inset: -2px;
    border: 1px solid rgba(200, 168, 78, 0.15);
    border-radius: 10px;
    pointer-events: none;
}

.orthodox-icon {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 3px;
    filter: saturate(0.85) contrast(1.05);
    position: relative;
    z-index: 1;
}

/* Golden glow overlay when active */
.icon-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 30%, rgba(255, 215, 0, 0.12), transparent 70%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 1.5s ease;
    z-index: 2;
}

/* Controls Panel */
.controls-panel {
    background: var(--bg-panel);
    border: 1px solid rgba(200, 168, 78, 0.2);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Ornament lines */
.ornament-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1.2rem 0;
}

.ornament-dot {
    width: 6px;
    height: 6px;
    background: var(--gold);
    border-radius: 50%;
    flex-shrink: 0;
}

.ornament-rule {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-dark), transparent);
}

.ornament-cross {
    color: var(--gold);
    font-size: 1rem;
    flex-shrink: 0;
    opacity: 0.7;
}

/* Transport button */
.transport {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.btn-chant {
    font-family: 'Cinzel', serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--parchment);
    background: linear-gradient(145deg, var(--crimson), #6b0000);
    border: 2px solid var(--gold-dark);
    border-radius: 50px;
    padding: 1rem 3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    box-shadow:
        0 4px 15px rgba(139, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    letter-spacing: 0.05em;
}

.btn-chant:hover {
    background: linear-gradient(145deg, #a52a2a, #8b0000);
    border-color: var(--gold);
    box-shadow:
        0 4px 20px rgba(139, 0, 0, 0.6),
        0 0 20px rgba(200, 168, 78, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

.btn-chant:active {
    transform: translateY(1px);
}

.btn-chant.playing {
    background: linear-gradient(145deg, #006400, #004d00);
    border-color: var(--gold-bright);
    box-shadow:
        0 4px 20px rgba(0, 100, 0, 0.4),
        0 0 30px rgba(255, 215, 0, 0.15);
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(0, 100, 0, 0.4), 0 0 20px rgba(255, 215, 0, 0.1); }
    50% { box-shadow: 0 4px 25px rgba(0, 100, 0, 0.6), 0 0 35px rgba(255, 215, 0, 0.25); }
}

.btn-icon {
    font-size: 1.4rem;
}

/* Control labels */
.control-label {
    display: block;
    font-family: 'Cinzel', serif;
    font-size: 0.85rem;
    color: var(--text-light);
    letter-spacing: 0.1em;
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

.control-group {
    margin-bottom: 1.2rem;
}

/* Mode selector buttons */
.mode-selector {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.mode-btn, .choir-btn {
    font-family: 'Cinzel', serif;
    font-size: 0.85rem;
    color: var(--text-light);
    background: rgba(26, 26, 62, 0.6);
    border: 1px solid rgba(200, 168, 78, 0.2);
    border-radius: 6px;
    padding: 0.5rem 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 48px;
    text-align: center;
}

.mode-btn:hover, .choir-btn:hover {
    background: rgba(200, 168, 78, 0.1);
    border-color: var(--gold-dark);
}

.mode-btn.active, .choir-btn.active {
    color: var(--gold-bright);
    background: rgba(200, 168, 78, 0.15);
    border-color: var(--gold);
    box-shadow: 0 0 10px rgba(200, 168, 78, 0.15);
}

/* Sliders */
.sliders-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem 2rem;
}

@media (max-width: 600px) {
    .sliders-grid {
        grid-template-columns: 1fr;
    }
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, var(--navy-deep), var(--navy-light));
    border-radius: 3px;
    outline: none;
    border: 1px solid rgba(200, 168, 78, 0.15);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: radial-gradient(circle at 40% 40%, var(--gold-bright), var(--gold-dark));
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--gold);
    box-shadow: 0 0 8px rgba(200, 168, 78, 0.3);
    transition: box-shadow 0.2s;
}

.slider::-webkit-slider-thumb:hover {
    box-shadow: 0 0 15px rgba(200, 168, 78, 0.5);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: radial-gradient(circle at 40% 40%, var(--gold-bright), var(--gold-dark));
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--gold);
    box-shadow: 0 0 8px rgba(200, 168, 78, 0.3);
}

/* Visualization */
.visualization-frame {
    background: var(--bg-panel);
    border: 1px solid rgba(200, 168, 78, 0.2);
    border-radius: 12px;
    padding: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

#vizCanvas {
    width: 100%;
    height: 160px;
    display: block;
    border-radius: 6px;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem 3rem;
    position: relative;
    z-index: 5;
}

footer p {
    font-family: 'Cinzel', serif;
    font-size: 0.9rem;
    color: var(--text-light);
    letter-spacing: 0.15em;
    margin-top: 0.5rem;
}

footer .slavonic {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: 0.85rem;
    color: var(--gold-dark);
    margin-top: 0.3rem;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--gold-dark);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gold);
}

/* Selection color */
::selection {
    background: rgba(200, 168, 78, 0.3);
    color: var(--parchment);
}