:root {
    --bg-dark: #0b0e14;
    --bg-card: rgba(22, 26, 34, 0.6);
    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --accent-glow: rgba(99, 102, 241, 0.4);
    --text-primary: #ffffff;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --border: rgba(255, 255, 255, 0.08);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .logo {
    font-family: 'Outfit', sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Nav */
.nav {
    padding: 1.5rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(11, 14, 20, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--accent-primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
    filter: brightness(1.1);
}

/* Hero Section */
.hero-section {
    padding: 10rem 0 6rem;
    text-align: center;
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
}

.badge-blue {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.hero-section h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section p {
    font-size: 1.25rem;
    max-width: 650px;
    margin: 0 auto 3rem;
    color: var(--text-muted);
}

/* Signup Card */
.signup-card {
    max-width: 500px;
    margin: 0 auto;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    text-align: left;
}

.signup-card h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.card-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    color: white;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 1.25rem;
    font-size: 1rem;
    margin-top: 1rem;
}

.form-message {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    min-height: 1.4em;
}

.form-message.success { color: #4ade80; }
.form-message.error { color: #f87171; }

/* Features */
.features-section {
    padding: 6rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
    color: white;
}

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

.feature-item p {
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
    margin-top: 6rem;
    color: var(--text-muted);
}

.attribution {
    font-size: 0.75rem;
    opacity: 0.5;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 8rem 0 4rem;
    }
    
    .signup-card {
        padding: 2rem;
    }
}