/* ===== CSS Variables ===== */
:root {
    --color-bg: #0a0a0b;
    --color-bg-alt: #111113;
    --color-surface: #18181b;
    --color-border: #27272a;
    --color-text: #fafafa;
    --color-text-muted: #a1a1aa;
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-accent: #8b5cf6;
    --color-gradient-start: #3b82f6;
    --color-gradient-end: #8b5cf6;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px -10px rgba(59, 130, 246, 0.5);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    background: var(--color-surface);
    border-color: var(--color-text-muted);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--spacing-md) 0;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-xl);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.logo-text {
    background: linear-gradient(135deg, var(--color-text), var(--color-text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links a:not(.btn) {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.nav-links a:not(.btn):hover {
    color: var(--color-text);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-4xl) 0;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content h1 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: var(--color-surface);
    border-radius: 40px;
    padding: 12px;
    border: 3px solid var(--color-border);
    box-shadow: 
        0 50px 100px -20px rgba(0, 0, 0, 0.5),
        0 30px 60px -30px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    border-radius: 30px;
    overflow: hidden;
}

.app-demo {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.demo-header {
    height: 60px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.demo-map {
    flex: 1;
    background: linear-gradient(180deg, #1a365d 0%, #2d3748 100%);
    position: relative;
}

.demo-map::before {
    content: '';
    position: absolute;
    inset: 20px;
    border: 2px dashed rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-lg);
}

.demo-map::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 8px rgba(59, 130, 246, 0.3);
}

.demo-cards {
    padding: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
}

.demo-card {
    flex: 1;
    height: 60px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(139, 92, 246, 0.1), transparent);
}

/* ===== Sections ===== */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

/* ===== Services ===== */
.services {
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px -20px rgba(59, 130, 246, 0.2);
}

.service-card.featured {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border-color: rgba(59, 130, 246, 0.3);
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.service-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.service-tags li {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ===== About ===== */
.about .container {
    max-width: 800px;
}

.about-content {
    text-align: center;
}

.about-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
}

.about-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-3xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ===== Contact ===== */
.contact {
    background: var(--color-bg-alt);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.contact-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.contact-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    transition: all var(--transition-base);
}

.contact-links a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.contact-links svg {
    width: 20px;
    height: 20px;
}

/* ===== Contact Form ===== */
.contact-form {
    max-width: 500px;
    margin: 0 auto var(--spacing-xl) auto;
    text-align: left;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    text-align: left;
}

.form-group input,
.form-group textarea {
    width: 100%;
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

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

.contact-form .btn {
    width: 100%;
    margin-top: var(--spacing-md);
}

/* ===== Footer ===== */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: var(--font-size-4xl);
    }
    
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .phone-mockup {
        width: 220px;
        height: 440px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .stats {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    
    .section-header h2,
    .about-content h2,
    .contact-content h2 {
        font-size: var(--font-size-3xl);
    }
}