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

:root {
    --bg: #0a0a1a;
    --bg2: #12122a;
    --bg3: #1a1a3a;
    --text: #e0e0f0;
    --text2: #8888aa;
    --accent: #4a9eff;
    --accent2: #ff6b6b;
    --border: #2a2a4a;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

#stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo-icon {
    font-size: 24px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(90deg, #4a9eff, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    gap: 5px;
}

.nav-item {
    background: transparent;
    border: none;
    color: var(--text2);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.nav-item:hover {
    background: var(--bg3);
    color: var(--text);
}

.nav-item.active {
    background: var(--accent);
    color: white;
}

.menu-btn {
    display: none;
    background: var(--bg3);
    border: none;
    color: var(--text);
    padding: 10px 15px;
    border-radius: 6px;
    font-size: 18px;
    cursor: pointer;
}

.mobile-nav {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100%;
    background: var(--bg2);
    z-index: 200;
    padding: 20px;
    transition: left 0.3s;
}

.mobile-nav.open {
    left: 0;
}

.mobile-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--bg3);
    border: none;
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
}

.mobile-item {
    display: block;
    width: 100%;
    padding: 12px;
    background: transparent;
    border: none;
    color: var(--text2);
    text-align: left;
    font-size: 14px;
    cursor: pointer;
    border-radius: 6px;
    margin-top: 5px;
}

.mobile-item:hover, .mobile-item.active {
    background: var(--bg3);
    color: var(--text);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 150;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.overlay.show {
    opacity: 1;
    pointer-events: auto;
}

/* Main */
.main {
    padding-top: 60px;
    min-height: 100vh;
}

.page {
    display: none;
    min-height: calc(100vh - 60px);
}

.page.active {
    display: block;
}

/* Home */
.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(180deg, var(--bg2), var(--bg));
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 15px;
    background: linear-gradient(90deg, #4a9eff, #a855f7, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 18px;
    color: var(--text2);
    max-width: 500px;
    margin: 0 auto 30px;
}

.hero-btns {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(74, 158, 255, 0.4);
}

.btn-secondary {
    background: var(--bg3);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 50px 20px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 40px;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    color: var(--text2);
    font-size: 14px;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto 50px;
}

.feature {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 25px;
    cursor: pointer;
    transition: all 0.2s;
}

.feature:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.feat-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 10px;
}

.feature h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.feature p {
    font-size: 13px;
    color: var(--text2);
}

/* Footer */
.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.footer-links a {
    color: var(--text2);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

/* Scene */
.scene-wrap {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
}

.scene {
    width: 100%;
    height: 100%;
}

/* Panel */
.panel {
    position: fixed;
    top: 70px;
    width: 260px;
    max-height: calc(100vh - 90px);
    background: rgba(18, 18, 42, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px;
    overflow-y: auto;
    z-index: 50;
}

.panel-left {
    left: 10px;
}

.panel-section {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.panel-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.panel-section h3 {
    font-size: 13px;
    color: var(--text2);
    margin-bottom: 10px;
}

.panel-section label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    margin-bottom: 8px;
}

.panel-section input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    background: var(--bg3);
    border-radius: 2px;
}

.panel-section input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.panel-section input[type="text"] {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
}

.panel-section input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

/* Categories */
.cats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5px;
}

.cat {
    padding: 6px 8px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text2);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.cat.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* Buttons */
.ctrl {
    padding: 8px 12px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    margin-right: 5px;
    margin-bottom: 5px;
    transition: all 0.2s;
}

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

.ctrl.active {
    background: #22c55e;
    border-color: #22c55e;
}

.mode, .anim, .ctype, .canim, .exp, .comp {
    padding: 8px 12px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text2);
    font-size: 12px;
    cursor: pointer;
    margin-right: 5px;
    margin-bottom: 5px;
    transition: all 0.2s;
}

.mode:hover, .anim:hover, .ctype:hover, .canim:hover, .exp:hover, .comp:hover {
    border-color: var(--accent);
    color: var(--text);
}

.mode.active, .anim.active, .ctype.active, .canim.active, .exp.active, .comp.active {
    background: rgba(74, 158, 255, 0.2);
    border-color: var(--accent);
    color: var(--accent);
}

/* Info Box */
.info-box {
    position: fixed;
    top: 70px;
    right: 10px;
    width: 280px;
    background: rgba(18, 18, 42, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px;
    z-index: 50;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--bg3);
    border: none;
    color: var(--text2);
    width: 24px;
    height: 24px;
    border-radius: 4px;
    cursor: pointer;
}

.info-box h4 {
    font-size: 16px;
    margin-bottom: 10px;
    padding-right: 25px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.info-row span:first-child {
    color: var(--text2);
}

.info-box p {
    font-size: 12px;
    color: var(--text2);
    margin-top: 10px;
}

/* Status */
.status-msg {
    position: fixed;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(168, 85, 247, 0.3);
    border: 1px solid rgba(168, 85, 247, 0.5);
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    z-index: 50;
}

/* Legend */
.legend {
    font-size: 12px;
    line-height: 1.8;
}

/* Back Button */
.back-btn {
    position: fixed;
    bottom: 20px;
    left: 20px;
    padding: 10px 20px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    cursor: pointer;
    z-index: 50;
    transition: all 0.2s;
}

.back-btn:hover {
    border-color: var(--accent);
}

/* Game HUD */
.game-hud {
    position: fixed;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 30px;
    background: rgba(18, 18, 42, 0.9);
    padding: 10px 25px;
    border-radius: 10px;
    border: 1px solid var(--border);
    z-index: 50;
    font-size: 14px;
    font-weight: 600;
}

.game-over {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    z-index: 100;
}

.game-over h2 {
    font-size: 32px;
    color: var(--accent2);
    margin-bottom: 15px;
}

.game-over p {
    font-size: 18px;
    margin-bottom: 20px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg2);
    border: 1px solid var(--accent);
    padding: 12px 24px;
    border-radius: 8px;
    z-index: 200;
    opacity: 0;
    transition: opacity 0.3s;
}

.toast.show {
    opacity: 1;
}

/* Select */
select {
    width: 100%;
    padding: 8px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 900px) {
    .nav {
        display: none;
    }
    .menu-btn {
        display: block;
    }
    .panel {
        width: calc(100% - 20px);
        left: 10px;
        right: 10px;
        top: auto;
        bottom: 10px;
        max-height: 40vh;
    }
    .info-box {
        width: calc(100% - 20px);
        left: 10px;
        right: 10px;
    }
    .hero-title {
        font-size: 32px;
    }
    .stats {
        gap: 20px;
    }
    .stat-num {
        font-size: 28px;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 50px 15px;
    }
    .hero-title {
        font-size: 26px;
    }
    .hero-desc {
        font-size: 14px;
    }
    .features {
        grid-template-columns: 1fr;
    }
    .game-hud {
        font-size: 12px;
        gap: 15px;
        padding: 8px 15px;
    }
}