/* ============================================
   ELEVATE DIGITAL - Premium Agency Website
   Apple-Inspired Design with Scroll Animations
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-primary: #1e40af;
    --color-primary-dark: #1e3a8a;
    --color-primary-light: #3b82f6;
    --color-accent: #10b981;
    --color-accent-alt: #f59e0b;

    /* Neutrals */
    --color-white: #ffffff;
    --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;
    --color-black: #000000;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #1e40af 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-size-7xl: 4.5rem;
    --font-size-8xl: 6rem;
    --font-size-9xl: 8rem;

    /* 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;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --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-card: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-slower: 700ms ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   ANIMATION CLASSES
   ============================================ */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Staggered delays */
.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 100ms; }
.stagger-3 { transition-delay: 200ms; }
.stagger-4 { transition-delay: 300ms; }
.stagger-5 { transition-delay: 400ms; }
.stagger-6 { transition-delay: 500ms; }

/* Hero animations */
.animate-hero {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
                transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-hero.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.delay-1 { transition-delay: 200ms; }
.delay-2 { transition-delay: 400ms; }
.delay-3 { transition-delay: 600ms; }

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--spacing-lg) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-gray-900);
}

.logo-img {
    height: 32px;
    width: auto;
    object-fit: contain;
    display: block;
    vertical-align: middle;
}

.logo-text {
    line-height: 1;
    display: inline-block;
}

.footer-logo .logo-img {
    height: 28px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-weight: 800;
}

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

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

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

.nav-cta {
    display: inline-flex;                                                                       
    align-items: center;
    background: var(--gradient-primary);
    color: white !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
}

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

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

.nav-toggle {
    display: none;
    width: 32px;
    height: 32px;
    position: relative;
    z-index: var(--z-tooltip);
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 24px;
    height: 2px;
    background: var(--color-gray-800);
    position: absolute;
    transition: all var(--transition-base);
}

.hamburger {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hamburger::before {
    content: '';
    top: -8px;
    left: 0;
}

.hamburger::after {
    content: '';
    top: 8px;
    left: 0;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-5xl) var(--spacing-xl);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.05);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

.hero-content {
    text-align: center;
    max-width: 1000px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-2xl);
    font-weight: 400;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(30, 64, 175, 0.4);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-800);
    border: 1px solid var(--color-gray-200);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
    transform: translateY(-2px);
}

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

.btn-full {
    width: 100%;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    animation: fadeIn 1s ease 1.5s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.scroll-arrow {
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(8px);
    }
    60% {
        transform: translateY(4px);
    }
}

/* ============================================
   INTRODUCTION SECTION
   ============================================ */

.intro {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-white);
}

.intro-container {
    max-width: 1200px;
    margin: 0 auto;
}

.intro-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.intro-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.intro-card {
    text-align: center;
    padding: var(--spacing-2xl);
}

.intro-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.intro-card:hover .intro-icon {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.1);
}

.intro-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.intro-card p {
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ============================================
   STATISTICS SECTION
   ============================================ */

.stats {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-gray-900);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-2xl);
}

.stat-number {
    font-size: clamp(4rem, 10vw, 6rem);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1;
    display: inline;
}

.stat-suffix {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-primary-light);
    display: inline;
}

.stat-label {
    font-size: var(--font-size-lg);
    color: var(--color-gray-400);
    margin-top: var(--spacing-md);
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-gray-50);
}

.services-container {
    max-width: 1200px;
    margin: 0 auto;
}

.services-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.services-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-primary-light);
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    color: white;
    margin-bottom: var(--spacing-lg);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.service-card > p {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.service-features {
    margin-bottom: var(--spacing-lg);
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: 600;
    transition: gap var(--transition-base);
}

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

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

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

/* ============================================
   PROCESS SECTION
   ============================================ */

.process {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-white);
}

.process-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.process-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
}

.process-wrapper {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-track {
    position: absolute;
    left: 60px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-gray-200);
}

.process-progress {
    width: 100%;
    height: 0%;
    background: var(--gradient-primary);
    transition: height 0.1s linear;
}

.process-steps {
    position: relative;
}

.process-step {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: var(--spacing-xl);
    padding: var(--spacing-2xl) 0;
    align-items: center;
}

.step-number {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.step-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    color: var(--color-gray-600);
    line-height: 1.7;
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
    color: var(--color-primary);
}

/* ============================================
   PORTFOLIO SECTION
   ============================================ */

.portfolio {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-gray-900);
}

.portfolio-container {
    max-width: 1200px;
    margin: 0 auto;
}

.portfolio-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.portfolio-header .section-label {
    color: var(--color-primary-light);
}

.portfolio-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.2;
}

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

.portfolio-item {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.portfolio-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: white;
    transition: transform var(--transition-slow);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

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

.portfolio-overlay h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-xs);
}

.portfolio-overlay p {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.portfolio-link {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-white);
    color: var(--color-gray-900);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

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

.portfolio-result {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(16, 185, 129, 0.9);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    margin-top: var(--spacing-sm);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-white);
}

.testimonials-container {
    max-width: 1200px;
    margin: 0 auto;
}

.testimonials-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.testimonials-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
}

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

.testimonial-card {
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    position: relative;
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.testimonial-quote {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    color: var(--color-primary);
}

.testimonial-text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

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

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.author-info strong {
    display: block;
    color: var(--color-gray-900);
}

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

/* ============================================
   WHY CHOOSE US SECTION (STICKY SPLIT)
   ============================================ */

.why-us {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-gray-50);
}

.why-us-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-4xl);
}

.why-us-sticky {
    position: sticky;
    top: 120px;
    height: fit-content;
}

.why-us-headline {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
}

.why-us-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: white;
}

.benefit-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.benefit-content p {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ============================================
   FINAL CTA SECTION
   ============================================ */

.final-cta {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-5xl) var(--spacing-xl);
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.cta-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
}

.cta-content h2 .text-gradient {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-2xl);
}

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

.cta-buttons .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.cta-buttons .btn-primary:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.cta-buttons .btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

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

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    padding: var(--spacing-5xl) var(--spacing-xl);
    background: var(--color-white);
}

.contact-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-headline {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xl);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #ef4444;
}

.error-message {
    font-size: var(--font-size-sm);
    color: #ef4444;
    min-height: 20px;
}

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

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

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

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

.spinner {
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

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

.contact-info h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.contact-info > p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

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

.contact-method-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.contact-method strong {
    display: block;
    color: var(--color-gray-900);
    margin-bottom: 2px;
}

.contact-method a,
.contact-method span {
    color: var(--color-gray-600);
}

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

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

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    color: var(--color-gray-600);
    transition: all var(--transition-base);
}

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

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--color-gray-900);
    padding: var(--spacing-4xl) var(--spacing-xl) var(--spacing-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-gray-800);
}

.footer-brand {
    padding-right: var(--spacing-2xl);
}

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

.footer-logo .logo-icon {
    background: var(--gradient-primary);
}

.footer-logo .logo-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
}

.footer-brand p {
    color: var(--color-gray-400);
    line-height: 1.7;
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
}

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

.back-to-top {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-800);
    border-radius: var(--radius-lg);
    color: var(--color-gray-400);
    transition: all var(--transition-base);
}

.back-to-top:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-3px);
}

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

@media (max-width: 1024px) {
    .intro-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

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

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

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

    .why-us-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .why-us-sticky {
        position: static;
        text-align: center;
    }

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

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

@media (max-width: 768px) {
    :root {
        --spacing-5xl: 5rem;
        --spacing-4xl: 4rem;
    }

    .nav-toggle {
        display: block;
    }

    .logo-img {
        height: 28px;
    }

    .nav-menu {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: #ffffff;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
        z-index: var(--z-modal);
        padding: var(--spacing-2xl);
        list-style: none;
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .nav-menu.active li {
        opacity: 1;
        transform: translateY(0);
    }

    .nav-menu.active li:nth-child(1) { transition-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) { transition-delay: 0.15s; }
    .nav-menu.active li:nth-child(3) { transition-delay: 0.2s; }
    .nav-menu.active li:nth-child(4) { transition-delay: 0.25s; }
    .nav-menu.active li:nth-child(5) { transition-delay: 0.3s; }

    .nav-menu .nav-link {
        font-size: var(--font-size-xl);
    }

    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

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

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

    .btn-large {
        width: 100%;
        max-width: 300px;
    }

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

    .stat-item {
        padding: var(--spacing-lg);
    }

    .process-step {
        grid-template-columns: 80px 1fr;
        gap: var(--spacing-md);
    }

    .step-icon {
        display: none;
    }

    .process-track {
        left: 40px;
    }

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

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

    .footer-brand {
        padding-right: 0;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 1.5rem;
    }

    .hero {
        padding: var(--spacing-4xl) var(--spacing-md);
    }

    .intro-card {
        padding: var(--spacing-lg);
    }

    .service-card {
        padding: var(--spacing-lg);
    }

    .testimonial-card {
        padding: var(--spacing-lg);
    }

    .benefit-item {
        flex-direction: column;
        text-align: center;
    }

    .benefit-icon {
        margin: 0 auto;
    }

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

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ============================================
   PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* GPU acceleration for animated elements */
.animate-on-scroll,
.animate-hero,
.gradient-orb,
.service-card,
.portfolio-placeholder,
.testimonial-card,
.benefit-item {
    will-change: transform, opacity;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .animate-on-scroll,
    .animate-hero {
        opacity: 1;
        transform: none;
    }

    .gradient-orb {
        animation: none;
    }
}

/* Print styles */
@media print {
    .navbar,
    .scroll-indicator,
    .back-to-top {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-xl);
    }

    section {
        page-break-inside: avoid;
    }
}