:root {
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --bg-color: #0f0c29;
    --bg-gradient: linear-gradient(to right, #24243e, #302b63, #0f0c29);
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-color: #ffffff;
    --text-muted: #b2bec3;
    --border-radius: 16px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background: var(--bg-gradient);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    position: relative;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 50% 50%, rgba(108, 92, 231, 0.15), transparent 60%);
    animation: pulseBg 10s infinite alternate;
}

@keyframes pulseBg {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(1.2); opacity: 0.8; }
}

.container {
    width: 100%;
    max-width: 900px;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #a29bfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.input-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.input-group {
    width: 100%;
    max-width: 400px;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input[type="datetime-local"] {
    width: 100%;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: white;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
    color-scheme: dark;
}

input[type="datetime-local"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.2);
}

button {
    padding: 1rem 2.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.3);
}

.results-section {
    opacity: 1;
    transform: translateY(0);
    transition: var(--transition);
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.results-section.hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.section-title {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.main-stats {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
}

.stat-card.highlight {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(162, 155, 254, 0.1));
    border: 1px solid var(--primary-color);
    min-width: 300px;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 700;
    margin: 0.5rem 0;
    color: white;
}

.stat-card .label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detailed-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-bottom: 3rem;
}

.fun-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.fun-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.fun-card i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.fun-card span {
    font-size: 1.5rem;
    font-weight: 700;
}

.fun-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.animate-pulse .value {
    animation: pulseText 1s infinite;
}

@keyframes pulseText {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@media (max-width: 768px) {
    .container {
        padding: 1.5rem;
    }
    
    header h1 {
        font-size: 2rem;
    }

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