:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent-color: #8b5cf6;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Background bloom */
body::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    pointer-events: none;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.download-btn {
    background-color: var(--text-primary);
    color: var(--bg-color);
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform 0.2s, opacity 0.2s;
}

.download-btn:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 4rem 1rem;
    min-height: 80vh;
}

h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(180deg, #FFFFFF 0%, #A3A3A3 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero > p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
}

.deck-container {
    perspective: 1000px;
    margin: 2rem 0 6rem;
}

.card-3d {
    width: 320px;
    height: 400px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.1);
    transform-style: preserve-3d;
    transition: transform 0.1s ease-out;
    text-align: left;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.card-3d:hover {
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 0 30px 60px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.2), 0 0 40px rgba(139, 92, 246, 0.2);
}

.card-3d::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-color);
}

.time {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.card-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.5;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    width: 100%;
    padding: 0 2rem;
}

.feature h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}