:root {
    --bg-dark: #0a0a0c;
    --bg-card: #151518;
    --text-primary: #e0e0e0;
    --text-secondary: #8a8a93;
    --accent: #4f46e5;
    --accent-glow: rgba(79, 70, 229, 0.4);
    --border: #27272a;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    border-bottom: 1px solid var(--border);
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #fff, #8a8a93);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--text-primary);
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.primary-btn {
    background-color: var(--accent);
    color: white;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 0 15px var(--accent-glow);
}

.primary-btn:hover {
    background-color: #6366f1;
    box-shadow: 0 0 25px var(--accent-glow);
    transform: translateY(-2px);
}

.secondary-btn {
    background-color: transparent;
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border);
}

.secondary-btn:hover {
    background-color: var(--bg-card);
    border-color: var(--text-secondary);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8rem 5%;
    min-height: 80vh;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, #a5a5b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--accent-glow); }
    70% { box-shadow: 0 0 0 15px rgba(79, 70, 229, 0); }
    100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

.cube-container {
    width: 200px;
    height: 200px;
    position: relative;
    transform-style: preserve-3d;
    animation: rotate 20s infinite linear;
}

.cube {
    width: 100%;
    height: 100%;
    position: absolute;
    transform-style: preserve-3d;
}

.face {
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(21, 21, 24, 0.8);
    border: 2px solid var(--accent);
    box-shadow: inset 0 0 20px var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}

.front  { transform: translateZ(100px); }
.back   { transform: rotateY(180deg) translateZ(100px); }
.right  { transform: rotateY(90deg) translateZ(100px); }
.left   { transform: rotateY(-90deg) translateZ(100px); }
.top    { transform: rotateX(90deg) translateZ(100px); }
.bottom { transform: rotateX(-90deg) translateZ(100px); }

@keyframes rotate {
    0% { transform: rotateX(0) rotateY(0); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

.features {
    padding: 5rem 5%;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 4rem;
    font-weight: 600;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: var(--accent);
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.feature-card p {
    color: var(--text-secondary);
}

footer {
    margin-top: auto;
    padding: 2rem 5%;
    text-align: center;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
}