/* ==========================================================================
   NEXUS CREATIVE - MAIN STYLESHEET
   ========================================================================== */

/* ==================== CSS VARIABLES ==================== */
:root {
    /* Primary Colors */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #ec4899;
    --color-accent: #06b6d4;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #0f0f0f;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* 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;
    --font-size-6xl: 3.75rem;
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* 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);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-slower: 500ms ease;
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--leading-normal);
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==================== UTILITY CLASSES ==================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn--full {
    width: 100%;
}

.btn-icon {
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* ==================== HEADER & NAVIGATION ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--space-4) 0;
    transition: all var(--transition-base);
}

.header--scrolled {
    background: rgba(15, 15, 15, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-3) 0;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-bold);
    font-size: var(--font-size-xl);
    color: var(--color-white);
}

.logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-lg);
}

.logo-text {
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    position: relative;
    padding: var(--space-2) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width var(--transition-base);
}

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

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

.nav-link--cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white) !important;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
}

.nav-link--cta::after {
    display: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    z-index: calc(var(--z-fixed) + 10);
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition-base);
    transform-origin: center;
}

.menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==================== HERO SECTION ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: calc(var(--space-24) + 60px) 0 var(--space-24);
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -2;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(15, 15, 15, 0.95) 0%,
        rgba(15, 15, 15, 0.8) 50%,
        rgba(79, 70, 229, 0.3) 100%
    );
    z-index: -1;
}

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

.hero-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-primary-light);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-6);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
    letter-spacing: -1px;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-16);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-16);
}

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

.stat-number,
.stat-suffix {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
    line-height: 1;
}

.stat-suffix {
    color: var(--color-primary);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--space-2);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

.scroll-text {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==================== SECTION COMMON STYLES ==================== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    letter-spacing: -0.5px;
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    line-height: var(--leading-relaxed);
}

/* ==================== SERVICES SECTION ==================== */
.services {
    padding: var(--space-24) 0;
    background: var(--color-gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.service-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    margin-bottom: var(--space-6);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.service-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
}

.service-link svg {
    transition: transform var(--transition-base);
}

.service-link:hover svg {
    transform: translateX(4px);
}

/* ==================== PORTFOLIO SECTION ==================== */
.portfolio {
    padding: var(--space-24) 0;
    background: var(--color-white);
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-2) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-500);
    background: transparent;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--color-white);
    background: var(--color-primary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/3;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    position: relative;
}

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

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(15, 15, 15, 0.95) 0%,
        rgba(15, 15, 15, 0.7) 50%,
        rgba(15, 15, 15, 0.3) 100%
    );
    display: flex;
    align-items: flex-end;
    padding: var(--space-8);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-content {
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.portfolio-item:hover .portfolio-content {
    transform: translateY(0);
}

.portfolio-category {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-primary-light);
    font-size: var(--font-size-xs);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-3);
}

.portfolio-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.portfolio-description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-4);
    line-height: var(--leading-relaxed);
}

.portfolio-btn {
    padding: var(--space-2) var(--space-4);
    background: var(--color-white);
    color: var(--color-gray-900);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.portfolio-cta {
    text-align: center;
}

/* ==================== ABOUT SECTION ==================== */
.about {
    padding: var(--space-24) 0;
    background: var(--color-gray-50);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-content .section-title {
    text-align: left;
}

.about-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.about-feature {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
}

.feature-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.feature-content h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
}

.feature-content p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: var(--leading-relaxed);
}

.about-visual {
    position: relative;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image--main {
    width: 85%;
}

.about-image--floating {
    position: absolute;
    bottom: -40px;
    right: 0;
    width: 50%;
    border: 4px solid var(--color-white);
}

.about-badge {
    position: absolute;
    top: -20px;
    right: 20%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    padding: var(--space-5);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.badge-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-bold);
    line-height: 1;
}

.badge-text {
    font-size: var(--font-size-xs);
    font-weight: var(--font-medium);
    line-height: var(--leading-tight);
}

/* ==================== TESTIMONIALS SECTION ==================== */
.testimonials {
    padding: var(--space-24) 0;
    background: var(--color-white);
}

.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonials-track {
    display: flex;
    transition: transform 0.5s ease;
    width: 100%;
}

.testimonial-card {
    flex: 0 0 100%;
    padding: var(--space-8);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    text-align: center;
}

.testimonial-rating {
    display: flex;
    justify-content: center;
    gap: var(--space-1);
    margin-bottom: var(--space-6);
    color: #fbbf24;
}

.testimonial-quote {
    font-size: var(--font-size-xl);
    color: var(--color-gray-700);
    line-height: var(--leading-relaxed);
    font-style: italic;
    margin-bottom: var(--space-8);
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-md);
}

.author-name {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
}

.author-title {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.slider-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.slider-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    color: var(--color-gray-600);
    transition: all var(--transition-base);
}

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

.slider-dots {
    display: flex;
    gap: var(--space-2);
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--color-gray-300);
    transition: all var(--transition-base);
}

.slider-dot.active {
    background: var(--color-primary);
    width: 32px;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    padding: var(--space-24) 0;
    background: var(--color-gray-900);
}

.contact .section-tag {
    background: rgba(99, 102, 241, 0.2);
    color: var(--color-primary-light);
}

.contact .section-title {
    color: var(--color-white);
    text-align: left;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
}

.contact-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-10);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.contact-item {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
    color: var(--color-primary-light);
}

.contact-label {
    display: block;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-1);
}

.contact-value {
    font-size: var(--font-size-base);
    color: var(--color-white);
    font-weight: var(--font-medium);
}

.contact-value:hover {
    color: var(--color-primary-light);
}

.social-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.social-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    transition: all var(--transition-base);
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

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

.form-error {
    display: none;
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--space-1);
}

.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
    border-color: var(--color-error);
}

.form-group.error .form-error {
    display: block;
}

.form-success {
    display: none;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-lg);
    color: var(--color-success);
    margin-top: var(--space-4);
}

.form-success.show {
    display: flex;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loader {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--color-black);
    padding: var(--space-20) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-bold);
    font-size: var(--font-size-xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-description {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.6);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social .social-link {
    background: rgba(255, 255, 255, 0.1);
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-5);
}

.footer-menu li {
    margin-bottom: var(--space-3);
}

.footer-menu a {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

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

.footer-text {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-4);
}

.newsletter-form {
    display: flex;
    gap: var(--space-2);
}

.newsletter-input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.newsletter-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    transition: all var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

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

/* ==================== MODAL ==================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    color: var(--color-gray-700);
    z-index: 10;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--color-error);
    color: var(--color-white);
}

.modal-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-info {
    padding: var(--space-8);
}

.modal-category {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-4);
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.modal-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.modal-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-gray-200);
}

.modal-detail {
    display: flex;
    justify-content: space-between;
}

.detail-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.detail-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-900);
}

/* ==================== BACK TO TOP ==================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

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

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== RESPONSIVE DESIGN ==================== */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .about-visual {
        order: -1;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-body {
        grid-template-columns: 1fr;
    }
    
    .modal-image {
        height: 300px;
    }
}

/* Mobile (up to 767px) */
@media (max-width: 767px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.375rem;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    /* Mobile Navigation */
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: calc(var(--space-20) + 20px) var(--space-6) var(--space-6);
        background: rgba(15, 15, 15, 0.98);
        backdrop-filter: blur(20px);
        transition: right var(--transition-slow);
        z-index: calc(var(--z-fixed) + 5);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link {
        display: block;
        padding: var(--space-4) 0;
        font-size: var(--font-size-lg);
    }
    
    .nav-link--cta {
        margin-top: var(--space-4);
        text-align: center;
    }
    
    /* Hero */
    .hero {
        padding: calc(var(--space-20) + 60px) 0 var(--space-16);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .scroll-indicator {
        display: none;
    }
    
    /* Services */
    .services {
        padding: var(--space-16) 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    /* Portfolio */
    .portfolio {
        padding: var(--space-16) 0;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-filter {
        gap: var(--space-2);
    }
    
    .filter-btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-xs);
    }
    
    /* About */
    .about {
        padding: var(--space-16) 0;
    }
    
    .about-image--main {
        width: 100%;
    }
    
    .about-image--floating {
        display: none;
    }
    
    .about-badge {
        right: var(--space-4);
        padding: var(--space-3);
    }
    
    /* Testimonials */
    .testimonials {
        padding: var(--space-16) 0;
    }
    
    .testimonial-card {
        padding: var(--space-6);
    }
    
    .testimonial-quote {
        font-size: var(--font-size-lg);
    }
    
    /* Contact */
    .contact {
        padding: var(--space-16) 0;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer {
        padding: var(--space-12) 0 var(--space-6);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    .footer-legal {
        gap: var(--space-4);
    }
}

/* Small Mobile (up to 479px) */
@media (max-width: 479px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .stat-number,
    .stat-suffix {
        font-size: var(--font-size-3xl);
    }
    
    .portfolio-overlay {
        opacity: 1;
        background: linear-gradient(
            to top,
            rgba(15, 15, 15, 0.95) 0%,
            rgba(15, 15, 15, 0.5) 60%,
            transparent 100%
        );
    }
    
    .portfolio-content {
        transform: translateY(0);
    }
}

/* ==================== REDUCED MOTION ==================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==================== PRINT STYLES ==================== */
@media print {
    .header,
    .scroll-indicator,
    .slider-controls,
    .back-to-top,
    .modal {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-8) 0;
    }
    
    .hero-background {
        display: none;
    }
    
    .hero-overlay {
        background: none;
    }
    
    .hero-title,
    .section-title {
        color: var(--color-black);
    }
}