/* ── Design tokens ─────────────────────────────────── */
:root {
    --ground:   #090C18;
    --surface:  rgba(255,255,255,0.045);
    --surface-b:rgba(255,255,255,0.09);
    --text:     #E8ECF4;
    --text-dim: rgba(232,236,244,0.42);
    --accent:   #FBC400;
    --accent-g: rgba(251,196,0,0.22);
    --radius:   18px;

    --b-yellow: #FBC400;
    --b-blue:   #069DDC;
    --b-red:    #EF4444;
    --b-gray:   #9CA3AF;
    --b-green:  #84C23B;
}

[data-theme="light"] {
    --ground:   #F0F2F8;
    --surface:  rgba(255,255,255,0.82);
    --surface-b:rgba(0,0,0,0.07);
    --text:     #0A0E1A;
    --text-dim: rgba(10,14,26,0.42);
    --accent:   #D9A800;
    --accent-g: rgba(217,168,0,0.14);
}

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

/* ── Base ──────────────────────────────────────────── */
body {
    font-family: -apple-system, "Apple SD Gothic Neo", "Malgun Gothic",
                 "Nanum Gothic", "NanumGothic", sans-serif;
    background: var(--ground);
    color: var(--text);
    min-height: 100vh;
    transition: background 0.4s, color 0.3s;
    overflow-x: hidden;
}

/* ── Starfield canvas ──────────────────────────────── */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    transition: opacity 0.6s;
}
[data-theme="light"] #bg-canvas { opacity: 0; }

/* ── Layout ────────────────────────────────────────── */
.layout {
    position: relative;
    z-index: 1;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px 72px;
}

/* ── Header ────────────────────────────────────────── */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0 0;
}

.brand { display: flex; align-items: center; gap: 11px; }

.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--accent);
    color: #0A0E1A;
    font-size: 19px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-name {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--text);
}
.brand-name span { color: var(--accent); }

.site-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 50px;
    border: 1.5px solid var(--surface-b);
    background: var(--surface);
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.site-link:hover {
    background: var(--surface-b);
    color: var(--text);
    border-color: var(--accent);
}

#theme-toggle {
    background: var(--surface);
    border: 1px solid var(--surface-b);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    transition: background 0.25s, border-color 0.25s;
}
#theme-toggle:hover { background: var(--surface-b); }
#theme-toggle svg { width: 17px; height: 17px; }

[data-theme="dark"]  .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: none; }

/* ── Hero ──────────────────────────────────────────── */
.hero {
    padding: 60px 0 52px;
    text-align: center;
}

.eyebrow {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 22px;
}

h1 {
    font-size: clamp(38px, 9vw, 58px);
    font-weight: 900;
    line-height: 1.12;
    letter-spacing: -0.025em;
    color: var(--text);
    margin-bottom: 16px;
}
h1 em {
    font-style: normal;
    color: var(--accent);
}

.hero-sub {
    font-size: 14px;
    color: var(--text-dim);
    letter-spacing: 0.03em;
    margin-bottom: 40px;
}

/* CTA button */
#generate-btn {
    display: inline-block;
    background: var(--accent);
    color: #0A0E1A;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.02em;
    box-shadow: 0 0 40px var(--accent-g), 0 4px 16px rgba(0,0,0,0.25);
    transition: transform 0.15s, box-shadow 0.2s;
    animation: pulse-glow 3s ease-in-out infinite;
}
#generate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 56px var(--accent-g), 0 8px 24px rgba(0,0,0,0.3);
    animation: none;
}
#generate-btn:active { transform: scale(0.97); animation: none; }

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 40px var(--accent-g), 0 4px 16px rgba(0,0,0,0.25); }
    50%       { box-shadow: 0 0 64px var(--accent-g), 0 4px 16px rgba(0,0,0,0.25); }
}

.btn-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
}

.btn-icon {
    width: 20px;
    height: 20px;
    animation: spin-slow 5s linear infinite;
}
@keyframes spin-slow { to { transform: rotate(360deg); } }

/* ── Results section ───────────────────────────────── */
.results {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Placeholder */
.results-placeholder {
    text-align: center;
    padding: 52px 0 40px;
    color: var(--text-dim);
    font-size: 14px;
}
.ph-balls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 18px;
}
.ph-balls span {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 2px dashed var(--surface-b);
    display: block;
}

/* ── Round rows ────────────────────────────────────── */
.round-row {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--surface);
    border: 1px solid var(--surface-b);
    border-radius: var(--radius);
    padding: 18px 22px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    animation: slideUp 0.35s ease forwards;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.round-label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    min-width: 24px;
    text-align: center;
}

.balls-row {
    display: flex;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

/* ── Lottery balls ─────────────────────────────────── */
.ball {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    font-size: 15px;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    position: relative;
    transform: scale(0);
    animation: popBall 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    text-shadow: 0 1px 3px rgba(0,0,0,0.35);
}
@keyframes popBall {
    to { transform: scale(1); }
}

/* Shine highlight */
.ball::before {
    content: '';
    position: absolute;
    top: 18%;
    left: 20%;
    width: 32%;
    height: 22%;
    background: rgba(255,255,255,0.48);
    border-radius: 50%;
    filter: blur(2px);
    pointer-events: none;
}

/* Ball colors — authentic Korean 6/45 color scheme */
.ball.yellow { background: radial-gradient(circle at 38% 35%, #FFE066, var(--b-yellow) 70%); }
.ball.blue   { background: radial-gradient(circle at 38% 35%, #62CFFF, var(--b-blue)   70%); }
.ball.red    { background: radial-gradient(circle at 38% 35%, #FF9090, var(--b-red)    70%); }
.ball.gray   { background: radial-gradient(circle at 38% 35%, #D1D5DB, var(--b-gray)   70%); }
.ball.green  { background: radial-gradient(circle at 38% 35%, #B8E06A, var(--b-green)  70%); }

/* Dark mode glows — the key aesthetic moment */
[data-theme="dark"] .ball.yellow { box-shadow: 0 0 20px rgba(251,196,0,0.6),   0 3px 8px rgba(0,0,0,0.5); }
[data-theme="dark"] .ball.blue   { box-shadow: 0 0 20px rgba(6,157,220,0.6),   0 3px 8px rgba(0,0,0,0.5); }
[data-theme="dark"] .ball.red    { box-shadow: 0 0 20px rgba(239,68,68,0.6),   0 3px 8px rgba(0,0,0,0.5); }
[data-theme="dark"] .ball.gray   { box-shadow: 0 0 16px rgba(156,163,175,0.5), 0 3px 8px rgba(0,0,0,0.5); }
[data-theme="dark"] .ball.green  { box-shadow: 0 0 20px rgba(132,194,59,0.6),  0 3px 8px rgba(0,0,0,0.5); }

[data-theme="light"] .ball       { box-shadow: 0 3px 10px rgba(0,0,0,0.18); }

/* ── Color legend ──────────────────────────────────── */
.legend {
    display: flex;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
    padding: 20px 0 4px;
    opacity: 0;
    animation: fadeIn 0.4s ease 0.5s forwards;
}
@keyframes fadeIn { to { opacity: 1; } }

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.03em;
}
.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Guide content ─────────────────────────────────── */
.guide-section {
    margin-top: 72px;
    padding-top: 56px;
    border-top: 1px solid var(--surface-b);
}

.guide-article {
    margin-bottom: 56px;
}

.guide-article h2 {
    font-size: 22px;
    font-weight: 900;
    color: var(--text);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent);
    letter-spacing: -0.01em;
}

.guide-article h3 {
    font-size: 16px;
    font-weight: 800;
    color: var(--text);
    margin: 28px 0 10px;
}

.guide-article p {
    font-size: 14px;
    line-height: 1.9;
    color: var(--text-dim);
    margin-bottom: 14px;
}

.guide-article ul, .guide-article ol {
    font-size: 14px;
    line-height: 1.85;
    color: var(--text-dim);
    padding-left: 20px;
    margin-bottom: 16px;
}

.guide-article li { margin-bottom: 8px; }

.guide-article strong { color: var(--text); font-weight: 700; }

.guide-article code {
    background: var(--surface-b);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    font-family: monospace;
}

.table-wrap { overflow-x: auto; margin: 16px 0 20px; }

.odds-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 480px;
}

.odds-table th, .odds-table td {
    padding: 10px 14px;
    border: 1px solid var(--surface-b);
    text-align: left;
    line-height: 1.5;
}

.odds-table th {
    background: var(--surface);
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}

.odds-table td { color: var(--text-dim); }
.odds-table tbody tr:hover { background: var(--surface); }

/* FAQ */
.faq-section { margin-top: 48px; }

.faq-section h2 {
    font-size: 22px;
    font-weight: 900;
    color: var(--text);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent);
}

.faq-item {
    border: 1px solid var(--surface-b);
    border-radius: 14px;
    padding: 20px 24px;
    margin-bottom: 12px;
    background: var(--surface);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.faq-item h3 {
    font-size: 14px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.5;
}

.faq-item p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dim);
    margin: 0;
}

/* ── Comments ──────────────────────────────────────── */
.comments-wrap {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--surface-b);
}

.comments-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 28px;
}

.comments-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
}

.comments-sub {
    font-size: 13px;
    color: var(--text-dim);
}

#disqus_thread {
    min-height: 200px;
}

/* ── Footer ────────────────────────────────────────── */
footer {
    text-align: center;
    padding-top: 52px;
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 0.03em;
}
.footer-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 700;
}
.footer-link:hover { text-decoration: underline; }

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 480px) {
    .ball { width: 40px; height: 40px; font-size: 13px; }
    .balls-row { gap: 5px; }
    .round-row { padding: 14px 14px; gap: 10px; }
    .btn-inner { padding: 15px 30px; }
}

/* ── Reduced motion ────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .ball, .round-row, .legend, .btn-icon, #generate-btn {
        animation: none;
    }
    .ball { transform: scale(1); }
    .round-row { opacity: 1; }
    .legend { opacity: 1; }
}