@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syne:wght@400;600;700;800&display=swap');

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

:root {
    --bg: #080a10;
    --bg2: #0f1219;
    --bg3: #161b26;
    --surface: #1c2233;
    --border: #252d40;
    --border2: #2f3a55;
    --text: #e8ecf4;
    --text2: #7a86a0;
    --text3: #3d4860;
    --accent: #00e5c3;
    --blue: #3b82f6;
    --purple: #a855f7;
    --red: #ff5c5c;
    --yellow: #ffb340;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Space Mono', monospace;
    font-size: 13px;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── HEADER ── */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8, 10, 16, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 32px;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo {
    font-size: 26px;
    animation: pulse 2.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }
}

header h1 {
    font-family: 'Syne', sans-serif;
    font-size: 19px;
    font-weight: 800;
    background: linear-gradient(90deg, var(--accent), var(--blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    font-size: 10px;
    color: var(--text3);
    margin-top: 2px;
    letter-spacing: 1px;
}

.badge {
    font-size: 10px;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 4px 14px;
    border-radius: 20px;
    background: rgba(0, 229, 195, 0.06);
    letter-spacing: 1px;
}

/* ── HERO ── */
.hero {
    position: relative;
    overflow: hidden;
    padding: 72px 32px 56px;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 50% 0%, rgba(0, 229, 195, 0.13), transparent),
        radial-gradient(ellipse 40% 40% at 80% 60%, rgba(59, 130, 246, 0.09), transparent),
        radial-gradient(ellipse 30% 30% at 20% 80%, rgba(168, 85, 247, 0.07), transparent);
}

.hero-label {
    position: relative;
    font-size: 10px;
    color: var(--accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.hero-title {
    position: relative;
    font-family: 'Syne', sans-serif;
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -2px;
    margin-bottom: 16px;
}

.hero-title .g1 {
    background: linear-gradient(135deg, #fff 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title .g2 {
    background: linear-gradient(135deg, var(--accent), var(--blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    position: relative;
    color: var(--text2);
    max-width: 500px;
    margin: 0 auto 32px;
    font-size: 13px;
    line-height: 1.8;
}

.hero-stats {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
}

.hero-stat-val {
    font-family: 'Syne', sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
}

.hero-stat-label {
    font-size: 10px;
    color: var(--text3);
    letter-spacing: 1px;
    margin-top: 2px;
}

/* ── CONTAINER ── */
.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 24px 48px;
}

/* ── TABS ── */
.tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 28px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
}

.tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text2);
    padding: 12px 20px;
    cursor: pointer;
    font-family: 'Space Mono', monospace;
    font-size: 12px;
    transition: all 0.2s;
    margin-bottom: -1px;
}

.tab-btn:hover {
    color: var(--text);
}

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* ── LAYOUT ── */
.layout {
    display: grid;
    grid-template-columns: 290px 1fr;
    gap: 20px;
    align-items: start;
}

/* ── CONTROL PANEL ── */
.control-panel {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    position: sticky;
    top: 70px;
}

.panel-section {
    padding: 18px 16px;
    border-bottom: 1px solid var(--border);
}

.panel-section:last-child {
    border-bottom: none;
}

.panel-section h3 {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-section h3::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border2), transparent);
}

/* algo cards */
.algo-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.algo-card input {
    display: none;
}

.algo-card {
    cursor: pointer;
}

.algo-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg3);
    transition: all 0.2s;
    font-size: 12px;
    font-weight: 700;
}

.algo-inner .algo-icon {
    font-size: 16px;
}

.algo-card:hover .algo-inner {
    border-color: var(--border2);
    transform: translateX(2px);
}

.algo-card[data-algo="hc"] input:checked~.algo-inner {
    border-color: var(--red);
    background: rgba(255, 92, 92, 0.08);
    color: var(--red);
}

.algo-card[data-algo="sa"] input:checked~.algo-inner {
    border-color: var(--accent);
    background: rgba(0, 229, 195, 0.08);
    color: var(--accent);
}

.algo-card[data-algo="ga"] input:checked~.algo-inner {
    border-color: var(--purple);
    background: rgba(168, 85, 247, 0.08);
    color: var(--purple);
}

/* params */
.param {
    margin-bottom: 14px;
}

.param:last-child {
    margin-bottom: 0;
}

.param label {
    display: block;
    color: var(--text2);
    font-size: 11px;
    margin-bottom: 6px;
}

.param label strong {
    color: var(--accent);
}

.param input[type="range"] {
    width: 100%;
    accent-color: var(--accent);
    height: 3px;
    cursor: pointer;
}

.select {
    width: 100%;
    background: var(--bg3);
    border: 1px solid var(--border2);
    color: var(--text);
    padding: 9px 10px;
    border-radius: 8px;
    font-family: 'Space Mono', monospace;
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.select:focus {
    outline: none;
    border-color: var(--accent);
}

.algo-params.hidden {
    display: none;
}

/* run button */
.btn-run {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, var(--accent), var(--blue));
    color: #080a10;
    border: none;
    border-radius: 8px;
    font-family: 'Syne', sans-serif;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.5px;
}

.btn-run:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(0, 229, 195, 0.25);
}

.btn-run:disabled {
    background: var(--surface);
    color: var(--text3);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── MAIN AREA ── */
.main-area {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
}

.canvas-wrap {
    position: relative;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

.canvas-wrap::before {
    content: 'LIVE MAP';
    position: absolute;
    top: 12px;
    left: 16px;
    font-size: 9px;
    color: var(--text3);
    letter-spacing: 2px;
    z-index: 2;
}

#canvas {
    display: block;
    width: 100%;
}

.canvas-hint {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text3);
    font-size: 13px;
    pointer-events: none;
    flex-direction: column;
    gap: 8px;
}

.canvas-hint .hint-icon {
    font-size: 32px;
    opacity: 0.4;
}

/* result bar */
.result-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.result-bar.hidden {
    display: none;
}

.metric {
    background: var(--bg2);
    padding: 14px 16px;
}

.metric-label {
    display: block;
    font-size: 9px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 6px;
}

.metric-value {
    font-family: 'Syne', sans-serif;
    font-size: 18px;
    font-weight: 700;
}

.metric-value.accent {
    color: var(--accent);
}

/* chart */
.chart-wrap {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.chart-wrap.hidden {
    display: none;
}

.chart-wrap h4 {
    font-size: 10px;
    color: var(--text2);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 14px;
}

/* loading */
.loading {
    position: absolute;
    inset: 0;
    background: rgba(8, 10, 16, 0.88);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    border-radius: 14px;
    z-index: 10;
    backdrop-filter: blur(4px);
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading p {
    color: var(--text2);
    font-size: 12px;
    letter-spacing: 1px;
}

/* ── COMPARE ── */
.compare-wrap {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.compare-header {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.compare-header h2 {
    font-family: 'Syne', sans-serif;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -1px;
}

.compare-header p {
    color: var(--text2);
    line-height: 1.7;
}

.compare-header .btn-run {
    width: auto;
    padding: 12px 36px;
}

.compare-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.compare-cards.hidden {
    display: none;
}

.ccard {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    transition: all 0.3s;
}

.ccard.winner {
    border-color: var(--accent);
    box-shadow: 0 0 32px rgba(0, 229, 195, 0.12);
}

.ccard-title {
    font-family: 'Syne', sans-serif;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 10px;
}

.ccard-coverage {
    font-family: 'Syne', sans-serif;
    font-size: 36px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.ccard-sub {
    font-size: 11px;
    color: var(--text2);
    margin: 6px 0 14px;
}

.ccard canvas {
    width: 100%;
    display: block;
    border-radius: 8px;
}

.winner-box {
    background: linear-gradient(135deg, rgba(0, 229, 195, 0.08), rgba(59, 130, 246, 0.08));
    border: 1px solid var(--accent);
    border-radius: 12px;
    padding: 18px 22px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.winner-box.hidden {
    display: none;
}

.winner-box strong {
    color: var(--accent);
}

/* ── ABOUT ── */
.about-wrap {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 960px;
}

.about-wrap h2 {
    font-family: 'Syne', sans-serif;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -1px;
}

.about-wrap>p {
    color: var(--text2);
    line-height: 1.8;
    font-size: 14px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.about-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color 0.2s, transform 0.2s;
}

.about-card:hover {
    border-color: var(--border2);
    transform: translateY(-2px);
}

.about-card h3 {
    font-family: 'Syne', sans-serif;
    font-size: 15px;
    font-weight: 700;
}

.about-card p {
    font-size: 12px;
    color: var(--text2);
    line-height: 1.8;
}

.pro {
    font-size: 11px;
    color: var(--accent);
}

.con {
    font-size: 11px;
    color: var(--red);
}

.tech-wrap h3 {
    font-family: 'Syne', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.tech-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tech-pills span {
    background: var(--bg3);
    border: 1px solid var(--border2);
    color: var(--text2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    transition: all 0.2s;
}

.tech-pills span:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .control-panel {
        position: static;
    }

    .result-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .compare-cards {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: 24px;
    }
}

.hidden {
    display: none !important;
}