/**
 * TechVision Main Styles
 * Dosya: assets/css/styles.css
 */

/* CSS Custom Properties */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --secondary: #64748b;
    --accent: #f59e0b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --dark: #0f172a;
    --light: #f8fafc;
    --border: #e2e8f0;
    --text: #334155;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --white: #ffffff;
    --black: #000000;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-dark));
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent), #d97706);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --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: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;

    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;

    /* Container */
    --container-max-width: 1200px;
    --container-padding: 2rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

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

.loading-logo {
    margin-bottom: var(--spacing-lg);
}

.loading-logo .logo-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-black);
    margin: 0 auto;
    animation: pulse 2s infinite;
}

.loading-text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-lg);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
}

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

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
    transform: translateY(0);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.header.hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--dark);
    transition: transform var(--transition-normal);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-extrabold);
}

/* Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: color var(--transition-normal);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Navigation Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.lang-switcher {
    display: flex;
    background: var(--light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.lang-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-light);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

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

.lang-btn:hover:not(.active) {
    background: var(--white);
    color: var(--text);
}

.search-close:hover {
    background: var(--light);
    color: var(--text);
}

.search-input-group {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-input {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg) 60px;
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    background: var(--light);
    transition: all var(--transition-normal);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-submit {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: color var(--transition-normal);
}

.search-submit:hover {
    color: var(--primary);
}

.search-suggestions h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.suggestion-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.suggestion-tag {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--light);
    color: var(--text);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-normal);
}

.suggestion-tag:hover {
    background: var(--primary);
    color: white;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-black);
    color: white;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
}

.hero-text .highlight {
    background: linear-gradient(45deg, var(--accent), var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-relaxed);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

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

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

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

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

.btn-secondary:hover {
    background: var(--dark);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.hero-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.hero-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(0);
    transition: transform var(--transition-normal);
}

.hero-card:hover {
    transform: translateY(-8px);
}

.hero-card.large {
    grid-column: 1 / -1;
}

.hero-card i {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    color: var(--accent);
}

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

.hero-card p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    line-height: var(--line-height-normal);
}

/* Stats Section */
.stats {
    background: var(--dark);
    color: white;
    padding: var(--spacing-3xl) 0;
}

.stats-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    text-align: center;
}

.stat-item {
    position: relative;
}

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-black);
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.stat-label {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    opacity: 0.9;
}

/* Section Styles */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

.section-subtitle {
    color: var(--primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.section-description {
    font-size: var(--font-size-xl);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

/* Services Section */
.services {
    background: var(--light);
}

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

.service-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
    font-size: var(--font-size-3xl);
}

.service-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: var(--text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.service-features {
    list-style: none;
    text-align: left;
}

.service-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.service-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: bold;
    width: 20px;
}

/* Projects Section */
.projects {
    background: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.project-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(99, 102, 241, 0.9), rgba(245, 158, 11, 0.9));
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-content {
    padding: var(--spacing-xl);
}

.project-category {
    display: inline-block;
    background: var(--light);
    color: var(--primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-tight);
}

.project-description {
    color: var(--text-light);
    line-height: var(--line-height-normal);
    margin-bottom: var(--spacing-lg);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    background: var(--light);
    color: var(--text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.project-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: gap var(--transition-normal);
}

.project-link:hover {
    gap: var(--spacing-md);
}

/* Blog Section */
.blog {
    background: var(--light);
}

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

.blog-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
}

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

.blog-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.blog-card:hover .blog-image img {
    transform: scale(1.05);
}

.blog-content {
    padding: var(--spacing-lg);
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.blog-category {
    background: var(--primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.blog-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-tight);
}

.blog-excerpt {
    color: var(--text-light);
    line-height: var(--line-height-normal);
    margin-bottom: var(--spacing-md);
}

.blog-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: gap var(--transition-normal);
}

.blog-link:hover {
    gap: var(--spacing-md);
}

/* Contact Section */
.contact {
    background: var(--dark);
    color: white;
}

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

.contact-info h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-tight);
}

.contact-info p {
    font-size: var(--font-size-xl);
    opacity: 0.9;
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
}

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

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    transition: background var(--transition-normal);
}

.contact-method:hover {
    background: rgba(255, 255, 255, 0.1);
}

.contact-method i {
    width: 24px;
    color: var(--accent);
    font-size: var(--font-size-xl);
}

/* Contact Form */
.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: rgba(255, 255, 255, 0.9);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

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

.submit-btn {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Footer */
.footer {
    background: var(--black);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.footer-logo .logo-text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-extrabold);
}

.footer-description {
    opacity: 0.8;
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.contact-item i {
    color: var(--primary);
    margin-top: 2px;
    min-width: 16px;
}

.contact-item a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
}

.contact-item a:hover {
    color: var(--primary);
}

/* Newsletter */
.newsletter {
    margin-top: var(--spacing-lg);
}

.newsletter h5 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.newsletter-input-group {
    display: flex;
    margin-bottom: var(--spacing-sm);
}

.newsletter-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: var(--font-size-sm);
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary);
    border: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    color: white;
    cursor: pointer;
    transition: background var(--transition-normal);
}

.newsletter-btn:hover {
    background: var(--primary-dark);
}

.newsletter-note {
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

.footer-bottom {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    opacity: 0.6;
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-bottom-links a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Cookie Notice */
.cookie-notice {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.cookie-notice.visible {
    transform: translateY(0);
}

.cookie-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.cookie-text p {
    font-size: var(--font-size-sm);
    color: var(--text);
    margin: 0;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* Notifications */
.notification {
    position: fixed;
    top: 100px;
    right: 2rem;
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    z-index: var(--z-toast);
    min-width: 300px;
    transform: translateX(400px);
    transition: transform var(--transition-normal);
}

.notification.show {
    transform: translateX(0);
}

.notification-success {
    border-left: 4px solid var(--success);
}

.notification-error {
    border-left: 4px solid var(--danger);
}

.notification-info {
    border-left: 4px solid var(--info);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.notification-content i {
    font-size: var(--font-size-lg);
}

.notification-success i {
    color: var(--success);
}

.notification-error i {
    color: var(--danger);
}

.notification-info i {
    color: var(--info);
}

.notification-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.notification-close:hover {
    background: var(--light);
    color: var(--text);
}

/* Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }
.text-light { color: var(--text-light); }
.text-muted { color: var(--text-muted); }
.text-dark { color: var(--dark); }
.text-white { color: white; }

.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-light { background-color: var(--light); }
.bg-dark { background-color: var(--dark); }
.bg-white { background-color: white; }

.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

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

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --container-padding: 1.5rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }

    .nav-menu {
        display: none;
    }

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

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }

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

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

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --spacing-3xl: 2rem;
        --spacing-2xl: 1.5rem;
    }

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

    .hero-text h1 {
        font-size: var(--font-size-4xl);
    }

    .hero-text p {
        font-size: var(--font-size-lg);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .projects-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

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

    .hero-cards {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .notification {
        left: 1rem;
        right: 1rem;
        min-width: auto;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 0.75rem;
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
    }

    .hero-text h1 {
        font-size: var(--font-size-3xl);
    }

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

    .stats-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .stat-number {
        font-size: var(--font-size-4xl);
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-buttons .btn {
        width: auto;
        min-width: 200px;
    }
}-btn {
     width: 40px;
     height: 40px;
     background: none;
     border: 1px solid var(--border);
     border-radius: var(--radius-lg);
     display: flex;
     align-items: center;
     justify-content: center;
     color: var(--text-light);
     cursor: pointer;
     transition: all var(--transition-normal);
 }

.search-btn:hover {
    background: var(--light);
    color: var(--text);
    border-color: var(--primary);
}

.cta-btn {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-sm);
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: var(--z-modal);
    overflow-y: auto;
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-menu-content {
    padding: var(--spacing-xl);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    color: var(--text);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.mobile-nav-link:hover {
    background: var(--light);
    color: var(--primary);
}

.mobile-nav-link i {
    width: 24px;
    color: var(--primary);
}

.mobile-menu-footer {
    margin-top: auto;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.mobile-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.mobile-social-link {
    width: 48px;
    height: 48px;
    background: var(--light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.mobile-social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

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

.mobile-contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

.mobile-contact-link:hover {
    color: var(--primary);
}

/* Search Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: var(--z-modal);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.search-modal.open {
    opacity: 1;
    visibility: visible;
}

.search-modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    width: 90%;
    max-width: 600px;
    transform: translateY(-20px);
    transition: transform var(--transition-normal);
}

.search-modal.open .search-modal-content {
    transform: translateY(0);
}

.search-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.search-modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--dark);
}

.search-close {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.search