:root {
    --primary: #9d4edd;
    --primary-glow: #e0aaff;
    --bg-dark: #0b0914;
    --glass-bg: rgba(30, 25, 50, 0.4);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8f9fa;
    --text-muted: #adb5bd;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Aurora & Stars Background */
.aurora-bg {
    position: fixed;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(157, 78, 221, 0.15), transparent 60%),
                radial-gradient(circle at 80% 20%, rgba(60, 9, 108, 0.2), transparent 50%);
    animation: rotateBg 30s linear infinite;
    z-index: -2;
}

.stars {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: radial-gradient(2px 2px at 20px 30px, #ffffff, rgba(0,0,0,0)),
                      radial-gradient(2px 2px at 40px 70px, #ffffff, rgba(0,0,0,0)),
                      radial-gradient(2px 2px at 50px 160px, #ffffff, rgba(0,0,0,0)),
                      radial-gradient(2px 2px at 90px 40px, #ffffff, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: twinkle 5s infinite alternate;
    opacity: 0.3;
    z-index: -1;
}

@keyframes rotateBg { 100% { transform: rotate(360deg); } }
@keyframes twinkle { 100% { opacity: 0.8; } }

#app {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.screen { display: none; flex-direction: column; gap: 20px; }
.screen.active { display: flex; animation: fadeIn 0.5s ease-in; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Typography & Glow */
.logo { font-size: 1.8rem; font-weight: 800; text-align: center; letter-spacing: 2px; }
.glow-text {
    color: #fff;
    text-shadow: 0 0 10px var(--primary), 0 0 20px var(--primary-glow);
}

/* Glassmorphism Components */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Grid & Info */
.grid-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 15px;
}
.info-item {
    background: rgba(0,0,0,0.2);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.9rem;
}
.info-item span { display: block; color: var(--text-muted); font-size: 0.8rem; }

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #3c096c);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    text-transform: uppercase;
}
.glow-button:hover {
    box-shadow: 0 0 20px var(--primary-glow);
    transform: scale(1.02);
}
.glass-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 10px 20px;
    border-radius: 12px;
    cursor: pointer;
    transition: 0.3s;
}
.glass-btn:hover { background: rgba(255,255,255,0.1); }

/* Benchmark Screen */
.benchmark-container { text-align: center; }
.progress-ring-container { position: relative; width: 200px; height: 200px; margin: 0 auto; }
.progress-ring-circle {
    stroke-dasharray: 565;
    stroke-dashoffset: 565;
    transition: stroke-dashoffset 0.5s linear;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}
.progress-text {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem; font-weight: bold; color: var(--primary-glow);
}
#visualizer { width: 100%; height: 100px; background: rgba(0,0,0,0.3); border-radius: 8px; margin-top: 20px; }

/* Result Screen */
.result-header { text-align: center; }
.total-score { font-size: 4rem; font-weight: 900; margin: 10px 0; }
.rating-badge {
    display: inline-block; padding: 5px 15px; border-radius: 20px;
    background: linear-gradient(45deg, gold, orange); color: #000; font-weight: bold;
}
.grid-scores {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px;
}
@media (min-width: 600px) { .grid-scores { grid-template-columns: repeat(3, 1fr); } }
.score-card { text-align: center; }
.score-card span { display: block; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 5px; }
.score-card strong { font-size: 1.5rem; color: var(--primary-glow); }

.action-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.action-grid .btn-primary { grid-column: span 2; }

#canvas-confetti { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 9999; }

/* Loading Animation */
.loader-ring {
    width: 60px; height: 60px; border: 5px solid var(--glass-border);
    border-top-color: var(--primary-glow); border-radius: 50%;
    animation: spin 1s linear infinite; margin: 0 auto;
}
@keyframes spin { 100% { transform: rotate(360deg); } }