/* ========================================
   AppGeek - Professional CSS Stylesheet
   Version: 1.0
   ======================================== */

/* ========================================
   CSS Variables / Design Tokens
   ======================================== */
:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

    /* Secondary Colors */
    --secondary: #10b981;
    --secondary-dark: #059669;
    --secondary-light: #34d399;

    /* Accent Colors */
    --accent: #f59e0b;
    --accent-dark: #d97706;

    /* Neutral Colors */
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;

    /* Industry Colors */
    --healthcare: #06b6d4;
    --pharma: #8b5cf6;
    --education: #f59e0b;
    --mobile: #ec4899;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* 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;

    /* 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: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --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: 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;
}

/* ========================================
   CSS 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-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
}

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

.highlight {
    color: var(--primary);
}

/* ========================================
   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 0.5s ease, visibility 0.5s ease;
}

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

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

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

/* ========================================
   Navigation
   ======================================== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    transition: var(--transition-base);
}

#header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

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

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

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

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--dark);
}

#header:not(.scrolled) .logo-text {
    color: var(--white);
}

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

.nav-link {
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
    padding: var(--spacing-xs) 0;
}

#header:not(.scrolled) .nav-link {
    color: rgba(255, 255, 255, 0.9);
}

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

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

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

#header:not(.scrolled) .nav-link:hover,
#header:not(.scrolled) .nav-link.active {
    color: var(--white);
}

.nav-cta {
    margin-left: var(--spacing-lg);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition-base);
}

#header:not(.scrolled) .hamburger .bar {
    background: var(--white);
}

.hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

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

#header:not(.scrolled) .btn-outline {
    border-color: var(--white);
    color: var(--white);
}

#header:not(.scrolled) .btn-outline:hover {
    background: var(--white);
    color: var(--primary);
}

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

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

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

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

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

.btn-block {
    width: 100%;
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 50%, #312e81 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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='%239C92AC' fill-opacity='0.05'%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");
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--gray-300);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-xl);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--gray-300);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle strong {
    color: var(--white);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--white);
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--primary-light);
}

.stat-label {
    display: block;
    font-size: var(--text-sm);
    color: var(--gray-400);
    margin-top: var(--spacing-xs);
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-400);
    animation: bounce 2s infinite;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--gray-400);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

.scroll-text {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes scroll-wheel {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 20px; }
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--gray-500);
}

/* ========================================
   About Section
   ======================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-content h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-lg);
}

.about-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--gray-600);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
}

.feature-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.feature-item i {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-lg);
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin: 0;
}

/* About Image */
.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    height: 500px;
}

.about-shape {
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-2xl);
    opacity: 0.1;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: var(--text-xl);
}

.floating-card span {
    font-weight: 600;
    color: var(--dark);
}

.card-1 {
    top: 10%;
    left: 0;
    animation-delay: 0s;
}

.card-1 i {
    background: rgba(6, 182, 212, 0.1);
    color: var(--healthcare);
}

.card-2 {
    top: 40%;
    right: 0;
    animation-delay: 1s;
}

.card-2 i {
    background: rgba(139, 92, 246, 0.1);
    color: var(--pharma);
}

.card-3 {
    bottom: 10%;
    left: 10%;
    animation-delay: 2s;
}

.card-3 i {
    background: rgba(245, 158, 11, 0.1);
    color: var(--education);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ========================================
   Services Section
   ======================================== */
.services {
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: var(--transition-base);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

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

.service-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
}

.service-card > p {
    color: var(--gray-500);
    margin-bottom: var(--spacing-lg);
}

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

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.service-features li i {
    color: var(--secondary);
    font-size: var(--text-xs);
}

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

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

/* ========================================
   Industries Section
   ======================================== */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.industry-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: var(--transition-base);
}

.industry-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.industry-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.industry-card:nth-child(1) .industry-icon {
    background: rgba(6, 182, 212, 0.1);
    color: var(--healthcare);
}

.industry-card:nth-child(2) .industry-icon {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.industry-card:nth-child(3) .industry-icon {
    background: rgba(139, 92, 246, 0.1);
    color: var(--pharma);
}

.industry-card:nth-child(4) .industry-icon {
    background: rgba(245, 158, 11, 0.1);
    color: var(--education);
}

.industry-icon i {
    font-size: var(--text-3xl);
}

.industry-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
}

.industry-card > p {
    color: var(--gray-500);
    margin-bottom: var(--spacing-lg);
    font-size: var(--text-sm);
}

.industry-solutions {
    margin-bottom: var(--spacing-lg);
}

.industry-solutions li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: var(--text-sm);
    color: var(--gray-600);
}

.industry-solutions li:last-child {
    border-bottom: none;
}

.industry-compliance {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.industry-compliance span {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--gray-600);
}

.industry-compliance span i {
    color: var(--secondary);
}

/* ========================================
   Portfolio Section
   ======================================== */
.portfolio {
    background: var(--gray-50);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition-base);
}

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

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

.portfolio-item {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition-base);
}

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

.portfolio-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-placeholder i {
    font-size: 5rem;
    opacity: 0.3;
}

.portfolio-placeholder.healthcare {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: var(--white);
}

.portfolio-placeholder.education {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: var(--white);
}

.portfolio-placeholder.pharma {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: var(--white);
}

.portfolio-placeholder.mobile {
    background: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
    color: var(--white);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
}

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

.portfolio-info {
    text-align: center;
    color: var(--white);
    transform: translateY(20px);
    transition: var(--transition-base);
}

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

.portfolio-info h4 {
    font-size: var(--text-xl);
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.portfolio-info p {
    color: var(--gray-300);
    margin-bottom: var(--spacing-md);
}

.portfolio-tags {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.portfolio-tags span {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
}

/* ========================================
   Technologies Section
   ======================================== */
.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.tech-category {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    text-align: center;
}

.tech-category h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xl);
    color: var(--gray-700);
}

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

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.tech-item:hover {
    background: var(--gray-50);
    transform: translateY(-3px);
}

.tech-item i {
    font-size: var(--text-3xl);
}

.tech-item span {
    font-size: var(--text-sm);
    color: var(--gray-600);
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background: var(--dark);
    color: var(--white);
}

.testimonials .section-tag {
    background: rgba(99, 102, 241, 0.2);
}

.testimonials .section-title {
    color: var(--white);
}

.testimonials .section-subtitle {
    color: var(--gray-400);
}

.testimonials-slider {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.testimonial-track {
    display: flex;
    overflow: hidden;
}

.testimonial-card {
    min-width: 100%;
    padding: var(--spacing-2xl);
    background: var(--dark-light);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.quote-icon {
    color: var(--primary);
    font-size: var(--text-3xl);
    margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--gray-300);
    margin-bottom: var(--spacing-xl);
}

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

.author-avatar {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

.author-avatar i {
    font-size: var(--text-xl);
    color: var(--white);
}

.author-info h5 {
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

.author-info span {
    font-size: var(--text-sm);
    color: var(--gray-400);
}

.testimonial-rating {
    color: var(--accent);
}

.testimonial-rating i {
    margin-right: 2px;
}

.testimonial-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.nav-btn {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--white);
    transition: var(--transition-base);
}

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

.nav-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-base);
}

.dot.active {
    width: 30px;
    background: var(--primary);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    background: var(--primary-gradient);
    padding: var(--spacing-4xl) 0;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.cta-content p {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
}

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

/* ========================================
   Contact Section
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

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

.info-card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: var(--transition-base);
}

.info-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

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

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

.info-content h4 {
    font-size: var(--text-base);
    margin-bottom: var(--spacing-sm);
}

.info-content p,
.info-content a {
    color: var(--gray-600);
    font-size: var(--text-sm);
}

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

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

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    color: var(--gray-600);
    transition: var(--transition-base);
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

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

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

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

.form-group label {
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--gray-700);
}

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

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

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

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

.error-message {
    font-size: var(--text-xs);
    color: var(--error);
    display: none;
}

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

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

/* Checkbox */
.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--gray-600);
}

.checkbox-label input {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition-base);
}

.checkbox-label input:checked + .checkmark {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Submit Button */
.btn .btn-loading {
    display: none;
}

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

.btn.loading .btn-loading {
    display: inline-flex;
}

/* Form Response */
.form-response {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    display: none;
}

.form-response.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.form-response.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

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

.footer-top {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
}

.footer-about p {
    margin: var(--spacing-lg) 0;
    font-size: var(--text-sm);
    line-height: 1.8;
}

.footer-logo .logo-text {
    color: var(--white);
}

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

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

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
}

.footer-col h4 {
    color: var(--white);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xl);
}

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

.footer-links a {
    font-size: var(--text-sm);
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: var(--spacing-sm);
}

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

.footer-contact i {
    color: var(--primary);
    margin-top: 3px;
}

.footer-bottom {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.footer-legal {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-legal a {
    font-size: var(--text-sm);
}

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

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }

    .footer-grid .footer-col:last-child {
        grid-column: span 2;
    }
}

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 100px var(--spacing-2xl) var(--spacing-2xl);
        box-shadow: var(--shadow-2xl);
        transition: var(--transition-base);
    }

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

    .nav-link {
        color: var(--gray-700) !important;
        font-size: var(--text-lg);
    }

    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
        z-index: var(--z-fixed);
    }

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

    .about-image {
        order: -1;
    }

    .image-wrapper {
        height: 350px;
    }

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

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

    .footer-about {
        grid-column: span 2;
    }

    .footer-grid .footer-col:last-child {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero-stats {
        gap: var(--spacing-xl);
    }

    .stat-number,
    .stat-suffix {
        font-size: var(--text-2xl);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

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

    .footer-about {
        grid-column: span 1;
    }

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

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

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

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

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

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

    .floating-card {
        padding: var(--spacing-md);
    }

    .floating-card i {
        width: 40px;
        height: 40px;
    }

    .card-2 {
        right: -10px;
    }
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .hero,
    .navbar,
    .back-to-top,
    .cta,
    .testimonials {
        display: none;
    }

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

    body {
        font-size: 12pt;
        color: black;
    }
}