:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --accent: #10b981;
    --border: rgba(255, 255, 255, 0.1);
    --glass-blur: 12px;
}

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

body {
    font-family: 'Outfit', 'Noto Sans SC', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    filter: blur(80px);
    opacity: 0.2;
    border-radius: 50%;
}

.blob-1 {
    top: -100px;
    right: -100px;
    animation: bounce 20s infinite alternate;
}

.blob-2 {
    bottom: -100px;
    left: -100px;
    animation: bounce 25s infinite alternate-reverse;
}

@keyframes bounce {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 50px) scale(1.1); }
}

.container {
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-dim);
    font-weight: 300;
    letter-spacing: 0.05em;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
}

.label-text {
    font-weight: 600;
    color: var(--text-main);
    display: block;
}

.label-hint {
    font-size: 0.8rem;
    color: var(--text-dim);
}

input, textarea {
    width: 100%;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

textarea {
    height: 120px;
    resize: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 1rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--border);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.score-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.score-circle {
    position: relative;
    width: 150px;
    height: 150px;
}

svg {
    transform: rotate(-90deg);
}

circle {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
}

.score-bg {
    stroke: rgba(255, 255, 255, 0.05);
}

.score-progress {
    stroke: var(--accent);
    transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

#score-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.score-unit {
    font-size: 0.9rem;
    color: var(--text-dim);
}

.score-label {
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 400;
}

.footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--text-dim);
    font-size: 0.8rem;
    opacity: 0.5;
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    .card {
        padding: 1.5rem;
    }
}