:root {
    --landing-bg: #0a0a0a;
    --landing-bg-secondary: #111111;
    --landing-card: #1a1a1a;
    --landing-border: #2a2a2a;
    --landing-text: #ffffff;
    --landing-text-muted: #888888;
    --landing-primary: #00d4ff;
    --landing-primary-hover: #00b8e6;
    --landing-accent: #00ff88;
    --landing-gradient-start: #1e293b;
    --landing-gradient-end: #0f172a;
}

* {
    box-sizing: border-box;
}

body {
    background: var(--landing-bg);
    color: var(--landing-text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    margin: 0;
}

.landing-navbar {
    background: var(--landing-bg-secondary);
    border-bottom: 1px solid var(--landing-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.landing-navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--landing-primary), transparent);
}

.navbar-brand {
    color: var(--landing-text);
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.navbar-brand i {
    color: var(--landing-primary);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-switch {
    display: flex;
    gap: 0.25rem;
    background: var(--landing-card);
    border: 1px solid var(--landing-border);
    border-radius: 8px;
    padding: 0.25rem;
}

.btn-lang {
    padding: 0.375rem 0.75rem;
    border: none;
    background: transparent;
    color: var(--landing-text-muted);
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-lang:hover {
    color: var(--landing-text);
}

.btn-lang.active {
    background: var(--landing-primary);
    color: var(--landing-bg);
    font-weight: 600;
}

.landing-container {
    min-height: calc(100vh - 65px);
}

.hero-section {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.hero-title i {
    color: var(--landing-primary);
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--landing-text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-admin {
    background: linear-gradient(135deg, var(--landing-gradient-start) 0%, var(--landing-gradient-end) 100%);
    color: var(--landing-text);
    border-color: var(--landing-border);
}

.btn-admin:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: var(--landing-primary);
}

.btn-client {
    background: linear-gradient(135deg, var(--landing-primary) 0%, var(--landing-primary-hover) 100%);
    color: var(--landing-bg);
}

.btn-client:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.features-section {
    padding: 4rem 2rem;
    background: var(--landing-bg-secondary);
    border-top: 1px solid var(--landing-border);
}

.feature-card {
    background: var(--landing-card);
    border: 1px solid var(--landing-border);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--landing-primary);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--landing-border);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--landing-primary);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--landing-text);
}

.feature-desc {
    color: var(--landing-text-muted);
    margin: 0;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-hero {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .landing-navbar {
        padding: 1rem;
    }
}