/* ===========================
   CSS Reset & Base Styles
   =========================== */

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

:root {
    /* Color Palette - Modern Minimalist */
    --primary: #1B087E;
    --primary-dark: #140660;
    --secondary: #64748b;
    --accent: #5B21B6;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border: #e2e8f0;
    --success: #10b981;
    --error: #ef4444;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* ===========================
   Typography
   =========================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    line-height: 1.7;
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ===========================
   Layout
   =========================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: 2.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* ===========================
   Navigation
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 1;
    min-width: 0;
}

.logo-brand {
    height: 80px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
}

.logo-icon {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

.language-selector-item {
    display: flex;
    align-items: center;
}

.language-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.language-select:hover {
    border-color: var(--primary);
}

.language-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    flex-shrink: 0;
    margin-left: auto;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===========================
   Hero Section
   =========================== */

.hero {
    padding: calc(var(--spacing-3xl) + 60px) 0 var(--spacing-3xl);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===========================
   Buttons
   =========================== */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===========================
   Principles Section
   =========================== */

.principles {
    background: var(--bg-primary);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.principle-card {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.principle-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.principle-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.principle-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* ===========================
   Apps Section
   =========================== */

.apps {
    background: var(--bg-secondary);
}

.app-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.app-card {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: var(--spacing-xl);
    border: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    transition: var(--transition);
}

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

.app-card.featured {
    border: 2px solid var(--primary);
}

.app-icon {
    font-size: 4rem;
    flex-shrink: 0;
}

.app-icon img {
    width: 6rem;
    height: 6rem;
    object-fit: contain;
}

.app-info {
    flex: 1;
}

.app-info h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.app-tagline {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.app-description {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.app-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
}

.app-status {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

.status-badge {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
}

.status-badge.available {
    background: #dcfce7;
    color: #166534;
}

.status-badge.coming-soon-badge {
    background: #fef3c7;
    color: #92400e;
}

.platform-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
}

.coming-soon {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: 12px;
    border: 2px dashed var(--border);
}

.coming-soon h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* ===========================
   Features Section
   =========================== */

.features {
    background: var(--bg-primary);
}

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

.feature-item {
    text-align: center;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-item h4 {
    margin-bottom: var(--spacing-sm);
}

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

/* ===========================
   Tech Stack Section
   =========================== */

.tech-stack {
    background: var(--bg-secondary);
    text-align: center;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.tech-item {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.tech-item h5 {
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.125rem;
}

.tech-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ===========================
   Contact Section
   =========================== */

.contact {
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: var(--text-secondary);
}

.contact-item a {
    color: var(--primary);
    font-weight: 600;
}

/* Form Styles */

.contact-form {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: 8px;
    display: none;
}

.form-message.success {
    display: block;
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.form-message.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* ===========================
   Footer
   =========================== */

.footer {
    background: var(--text-primary);
    color: var(--bg-secondary);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: var(--bg-primary);
    margin-bottom: var(--spacing-md);
}

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

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--text-light);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--bg-primary);
}

.footer-bottom {
    border-top: 1px solid var(--secondary);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
}

/* ===========================
   Legal Pages Styling
   =========================== */

.legal-section {
    margin-bottom: var(--spacing-2xl);
}

.legal-section h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.legal-section h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.legal-section ul {
    margin-left: var(--spacing-md);
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.legal-section ul li {
    margin-bottom: var(--spacing-sm);
}

.legal-section p {
    margin-bottom: var(--spacing-md);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .section-title {
        font-size: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .nav-content {
        gap: var(--spacing-sm);
    }

    .logo-brand {
        height: 50px;
    }

    .hero {
        padding: calc(var(--spacing-2xl) + 60px) 0 var(--spacing-2xl);
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .principles-grid,
    .features-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }

    .app-card {
        flex-direction: column;
        text-align: center;
    }

    .app-icon {
        align-self: center;
    }

    .app-features {
        justify-content: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

/* ===========================
   Animations
   =========================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth scroll for all browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}