/* Professional Corporate Design - SapientumAI */

:root {
    --primary: #032b35;
    --primary-light: #0a4f5e;
    --primary-dark: #021a21;
    --accent: #1a7a8a;
    --text-dark: #1a1a1a;
    --text-light: #4a4a4a;
    --text-muted: #6b7280;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border: #e5e7eb;
    --success: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--bg-white);
}

/* Navigation */
nav {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo img {
    height: 40px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.lang-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-white);
    color: var(--text-dark);
    font-size: 0.9rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.hero-tagline {
    font-size: 1rem;
    opacity: 0.85;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: white;
    color: var(--primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Section Base */
section {
    padding: 5rem 2rem;
}

.section-light {
    background: var(--bg-light);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-light);
    font-size: 1rem;
}

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

.feature-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Two Column Layout */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.column-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.column-content p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.column-content ul {
    list-style: none;
    margin: 1.5rem 0;
}

.column-content li {
    padding: 0.75rem 0;
    color: var(--text-light);
    display: flex;
    align-items: start;
    gap: 0.75rem;
}

.column-content li:before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
    font-size: 1.25rem;
}

/* Tech Stack */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.tech-badge {
    background: var(--bg-white);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.95rem;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: var(--primary-light);
}

/* Footer */
footer {
    background: var(--primary-dark);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

footer p {
    opacity: 0.8;
    margin: 0.5rem 0;
}

footer a {
    color: white;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .two-column {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .section-title {
        font-size: 2rem;
    }
}