/**
 * NSG Enerji - Main Stylesheet
 * Modern, professional design with brand colors
 */

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
    /* Brand Colors */
    --primary-blue: #1C6B80;
    --primary-blue-dark: #0D3A4A;
    --primary-blue-light: #2A8FA8;
    --primary-gold: #E5A428;
    --primary-gold-dark: #C48B1C;
    --primary-gold-light: #F4C04A;

    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --black: #000000;

    /* Semantic Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    --gradient-gold: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-dark) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(28, 107, 128, 0.95) 0%, rgba(13, 58, 74, 0.98) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.7) 100%);

    /* 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-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-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 30px rgba(28, 107, 128, 0.3);
    --shadow-gold: 0 0 30px rgba(229, 164, 40, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;

    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--gray-700);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

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

ul,
ol {
    list-style: none;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--gray-900);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
}

/* ============================================
   Preloader
   ============================================ */
#preloader {
    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 var(--transition-slow), visibility var(--transition-slow);
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 50px;
    height: 50px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: var(--white);
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo img {
    height: 50px;
    width: auto;
}

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

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--gray-700);
    padding: var(--spacing-2) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

.nav-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: var(--spacing-2);
    z-index: 1000;
}

.nav-toggle span {
    width: 100%;
    height: 2px;
    background: var(--gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--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(--primary-blue);
    border-color: var(--primary-blue);
}

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

.btn-gold {
    background: var(--gradient-gold);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-fit: cover;
    opacity: 0.4;
    animation: kenBurns 20s infinite alternate;
}

@keyframes kenBurns {
    0% {
        transform: scale(1);
    }

    100% {
        transform: scale(1.15);
    }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary-gold);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }

    50% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.6;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: var(--spacing-20) 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(229, 164, 40, 0.2);
    border: 1px solid var(--primary-gold);
    border-radius: var(--radius-full);
    color: var(--primary-gold);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--spacing-6);
}

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

.hero-title span {
    color: var(--primary-gold);
}

.hero-text {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-8);
    line-height: var(--leading-relaxed);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: var(--white);
    text-align: center;
    animation: bounce 2s infinite;
}

.hero-scroll i {
    font-size: var(--font-size-2xl);
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: var(--spacing-20) 0;
}

.section-lg {
    padding: var(--spacing-24) 0;
}

.section-gray {
    background: var(--gray-50);
}

.section-dark {
    background: var(--gradient-primary);
    color: var(--white);
}

/* ============================================
   About Section - Enhanced Design
   ============================================ */
.about-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 50%, var(--gray-50) 100%);
}

.about-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(28, 107, 128, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(229, 164, 40, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

.about-content {
    padding-right: var(--spacing-8);
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--spacing-8);
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.about-image {
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
}

.about-image-wrapper:hover .about-image {
    transform: scale(1.05);
}

.about-image-overlay {
    position: absolute;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
}

.experience-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: var(--gradient-gold);
    border-radius: 50%;
    color: var(--white);
    text-align: center;
    box-shadow: var(--shadow-xl);
    animation: pulse 2s infinite;
}

.experience-badge strong {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-extrabold);
    display: block;
}

.experience-badge span {
    font-size: var(--font-size-xs);
    opacity: 0.9;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--primary-blue);
    transform: translateX(10px);
    box-shadow: var(--shadow-xl);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--gradient-gold);
}

.feature-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.feature-icon i {
    font-size: var(--font-size-xl);
    color: var(--white);
}

.feature-content h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-2);
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }

    .about-content {
        padding-right: 0;
    }

    .feature-card:hover {
        transform: translateX(5px);
    }
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-12);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(28, 107, 128, 0.1);
    color: var(--primary-blue);
    font-size: var(--font-size-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-4);
}

.section-title span {
    color: var(--primary-gold);
}

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

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-100);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
}

.card-icon i {
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-3);
}

.card-text {
    color: var(--gray-500);
    line-height: var(--leading-relaxed);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
    color: var(--primary-blue);
    font-weight: var(--font-semibold);
    font-size: var(--font-size-sm);
}

.card-link:hover {
    color: var(--primary-gold);
}

.card-link i {
    transition: transform var(--transition-fast);
}

.card-link:hover i {
    transform: translateX(5px);
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ============================================
   Services Grid
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

/* ============================================
   Stats Section
   ============================================ */
.stats {
    background: var(--gradient-primary);
    padding: var(--spacing-16) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-8);
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-extrabold);
    color: var(--primary-gold);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

/* ============================================
   Projects Grid
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

.project-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--gray-200);
}

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

.project-card:hover img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-6);
    background: var(--gradient-overlay);
    color: var(--white);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
}

.project-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-2);
}

.project-meta {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ============================================
   Testimonials
   ============================================ */
.testimonial-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.testimonial-quote {
    position: absolute;
    top: var(--spacing-6);
    right: var(--spacing-6);
    font-size: var(--font-size-4xl);
    color: var(--primary-gold);
    opacity: 0.3;
}

.testimonial-text {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
    line-height: var(--leading-relaxed);
}

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

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: var(--font-bold);
}

.testimonial-info h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-1);
}

.testimonial-info p {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
}

.contact-info-item {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-icon i {
    color: var(--white);
    font-size: var(--font-size-xl);
}

.contact-info-content h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-1);
}

.contact-info-content p,
.contact-info-content a {
    color: var(--gray-500);
}

.contact-info-content a:hover {
    color: var(--primary-blue);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-4);
}

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

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    background: var(--white);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(28, 107, 128, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
}

.footer-top {
    padding: var(--spacing-16) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-8);
}

.footer-logo img {
    height: 45px;
    margin-bottom: var(--spacing-4);
}

.footer-desc {
    color: var(--gray-400);
    margin-bottom: var(--spacing-4);
    line-height: var(--leading-relaxed);
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-semibold);
    color: var(--white);
    margin-bottom: var(--spacing-6);
}

.footer-links li {
    margin-bottom: var(--spacing-3);
}

.footer-links a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-contact li {
    display: flex;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
}

.footer-contact i {
    color: var(--primary-gold);
    width: 20px;
}

.footer-contact a {
    color: var(--gray-400);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: var(--spacing-6) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    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 {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

/* ============================================
   Page Header (Inner Pages)
   ============================================ */
.page-header {
    background: var(--gradient-hero);
    padding: 140px 0 80px;
    position: relative;
    overflow: hidden;
}

.page-header::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"><circle cx="50" cy="50" r="40" fill="none" stroke="%23E5A428" stroke-width="0.5" opacity="0.1"/></svg>');
    background-size: 100px;
    opacity: 0.5;
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.page-title {
    font-size: var(--font-size-4xl);
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
    color: var(--primary-gold);
}

.breadcrumb span {
    color: var(--primary-gold);
}

/* ============================================
   Alert Messages
   ============================================ */
.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

/* ============================================
   Animations
   ============================================ */
[data-aos] {
    transition-property: transform, opacity;
}

/* Fade animations */
.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Slide up */
.slide-up {
    animation: slideUp 0.5s ease forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        gap: var(--spacing-4);
        padding: var(--spacing-8);
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-base);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

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

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }

    .section {
        padding: var(--spacing-12) 0;
    }

    .section-lg {
        padding: var(--spacing-16) 0;
    }

    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }

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

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .hero-buttons {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }

    .nav {
        height: 70px;
    }

    .logo img {
        height: 40px;
    }

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