/* =============================================
   GAGANDEEP'S PORTFOLIO - MAIN STYLESHEET
   Author: Gagandeep Singh
   Version: 1.0
   Description: Modern portfolio with blue theme
============================================= */

/* =============================================
   TABLE OF CONTENTS
   
   1. ROOT VARIABLES
   2. RESET & BASE STYLES
   3. TYPOGRAPHY
   4. UTILITY CLASSES
   5. COMPONENTS
      5.1 Buttons
      5.2 Badges
      5.3 Cards
   6. LAYOUT
      6.1 Container
      6.2 Section
      6.3 Grid Systems
   7. HEADER & NAVIGATION
      7.1 Top Bar
      7.2 Main Navigation
      7.3 Mobile Menu
   8. HERO SECTION
   9. ABOUT SECTION
   10. SERVICES SECTION
   11. PORTFOLIO SECTION
   12. SKILLS SECTION
   13. TESTIMONIALS SECTION
   14. CTA SECTION
   15. FOOTER
   16. ADDITIONAL COMPONENTS
   17. ANIMATIONS
   18. RESPONSIVE (in responsive.css)
============================================= */

/* =============================================
   1. ROOT VARIABLES
============================================= */
:root {
    /* Primary Blue Color Palette */
    --primary: #2563EB;
    --primary-light: #3B82F6;
    --primary-dark: #1D4ED8;
    --primary-rgb: 37, 99, 235;

    /* Secondary Blue Colors */
    --secondary: #0EA5E9;
    --secondary-light: #38BDF8;
    --secondary-dark: #0284C7;
    --secondary-rgb: 14, 165, 233;

    /* Accent Colors */
    --accent: #06B6D4;
    --accent-light: #22D3EE;
    --accent-dark: #0891B2;

    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #000000;
    --dark: #0F172A;
    --dark-blue: #1E293B;
    --light: #F8FAFC;
    --light-blue: #F0F9FF;

    /* Gray Scale */
    --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;

    /* Status Colors */
    --success: #10B981;
    --success-light: #34D399;
    --warning: #F59E0B;
    --warning-light: #FBBF24;
    --danger: #EF4444;
    --danger-light: #F87171;
    --info: #3B82F6;
    --info-light: #60A5FA;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2563EB 0%, #0EA5E9 100%);
    --gradient-secondary: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 100%);
    --gradient-accent: linear-gradient(135deg, #06B6D4 0%, #22D3EE 100%);
    --gradient-dark: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    --gradient-light: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 100%);

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 10px 40px rgba(37, 99, 235, 0.2);
    --shadow-secondary: 0 10px 40px rgba(14, 165, 233, 0.2);

    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', 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;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;

    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Container */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;

    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;

    /* Z-Index */
    --z-negative: -1;
    --z-0: 0;
    --z-10: 10;
    --z-20: 20;
    --z-30: 30;
    --z-40: 40;
    --z-50: 50;
    --z-60: 60;
    --z-70: 70;
    --z-80: 80;
    --z-90: 90;
    --z-100: 100;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
    position: relative;
}

/* Selection */
::selection {
    background-color: var(--primary);
    color: var(--white);
}

::-moz-selection {
    background-color: var(--primary);
    color: var(--white);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
    border: 2px solid var(--gray-100);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Focus Styles */
:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* =============================================
   3. TYPOGRAPHY
============================================= */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: var(--dark);
    margin-bottom: 1rem;
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
}

h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
}

h3 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
}

h4 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

h5 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

h6 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    color: var(--gray-600);
}

p:last-child {
    margin-bottom: 0;
}

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

a:hover {
    color: var(--primary-dark);
}

strong,
b {
    font-weight: 700;
}

em,
i {
    font-style: italic;
}

small {
    font-size: var(--font-size-sm);
}

/* Lists */
ul,
ol {
    list-style: none;
    margin: 0;
    padding: 0;
}

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

/* =============================================
   4. UTILITY CLASSES
============================================= */
/* Text Colors */
.text-primary {
    color: var(--primary) !important;
}

.text-secondary {
    color: var(--secondary) !important;
}

.text-accent {
    color: var(--accent) !important;
}

.text-dark {
    color: var(--dark) !important;
}

.text-light {
    color: var(--gray-300) !important;
}

.text-white {
    color: var(--white) !important;
}

.text-muted {
    color: var(--gray-500) !important;
}

.text-success {
    color: var(--success) !important;
}

.text-warning {
    color: var(--warning) !important;
}

.text-danger {
    color: var(--danger) !important;
}

/* Background Colors */
.bg-primary {
    background-color: var(--primary) !important;
}

.bg-secondary {
    background-color: var(--secondary) !important;
}

.bg-accent {
    background-color: var(--accent) !important;
}

.bg-dark {
    background-color: var(--dark) !important;
}

.bg-light {
    background-color: var(--light) !important;
}

.bg-white {
    background-color: var(--white) !important;
}

.bg-transparent {
    background-color: transparent !important;
}

/* Gradients */
.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-secondary {
    background: var(--gradient-secondary) !important;
}

.bg-gradient-dark {
    background: var(--gradient-dark) !important;
}

/* Text Alignment */
.text-left {
    text-align: left !important;
}

.text-center {
    text-align: center !important;
}

.text-right {
    text-align: right !important;
}

.text-justify {
    text-align: justify !important;
}

/* Font Weight */
.font-light {
    font-weight: 300 !important;
}

.font-normal {
    font-weight: 400 !important;
}

.font-medium {
    font-weight: 500 !important;
}

.font-semibold {
    font-weight: 600 !important;
}

.font-bold {
    font-weight: 700 !important;
}

.font-extrabold {
    font-weight: 800 !important;
}

.font-black {
    font-weight: 900 !important;
}

/* Display */
.d-none {
    display: none !important;
}

.d-inline {
    display: inline !important;
}

.d-inline-block {
    display: inline-block !important;
}

.d-block {
    display: block !important;
}

.d-flex {
    display: flex !important;
}

.d-inline-flex {
    display: inline-flex !important;
}

.d-grid {
    display: grid !important;
}

/* Flex Utilities */
.flex-row {
    flex-direction: row !important;
}

.flex-column {
    flex-direction: column !important;
}

.flex-wrap {
    flex-wrap: wrap !important;
}

.justify-start {
    justify-content: flex-start !important;
}

.justify-center {
    justify-content: center !important;
}

.justify-end {
    justify-content: flex-end !important;
}

.justify-between {
    justify-content: space-between !important;
}

.align-start {
    align-items: flex-start !important;
}

.align-center {
    align-items: center !important;
}

.align-end {
    align-items: flex-end !important;
}

/* Spacing */
.m-0 {
    margin: 0 !important;
}

.m-1 {
    margin: var(--space-xs) !important;
}

.m-2 {
    margin: var(--space-sm) !important;
}

.m-3 {
    margin: var(--space) !important;
}

.m-4 {
    margin: var(--space-md) !important;
}

.m-5 {
    margin: var(--space-lg) !important;
}

.mt-0 {
    margin-top: 0 !important;
}

.mt-1 {
    margin-top: var(--space-xs) !important;
}

.mt-2 {
    margin-top: var(--space-sm) !important;
}

.mt-3 {
    margin-top: var(--space) !important;
}

.mt-4 {
    margin-top: var(--space-md) !important;
}

.mt-5 {
    margin-top: var(--space-lg) !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mb-1 {
    margin-bottom: var(--space-xs) !important;
}

.mb-2 {
    margin-bottom: var(--space-sm) !important;
}

.mb-3 {
    margin-bottom: var(--space) !important;
}

.mb-4 {
    margin-bottom: var(--space-md) !important;
}

.mb-5 {
    margin-bottom: var(--space-lg) !important;
}

.p-0 {
    padding: 0 !important;
}

.p-1 {
    padding: var(--space-xs) !important;
}

.p-2 {
    padding: var(--space-sm) !important;
}

.p-3 {
    padding: var(--space) !important;
}

.p-4 {
    padding: var(--space-md) !important;
}

.p-5 {
    padding: var(--space-lg) !important;
}

/* Border Radius */
.rounded-0 {
    border-radius: 0 !important;
}

.rounded {
    border-radius: var(--radius) !important;
}

.rounded-sm {
    border-radius: var(--radius-sm) !important;
}

.rounded-lg {
    border-radius: var(--radius-lg) !important;
}

.rounded-xl {
    border-radius: var(--radius-xl) !important;
}

.rounded-full {
    border-radius: var(--radius-full) !important;
}

/* Shadows */
.shadow-none {
    box-shadow: none !important;
}

.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow {
    box-shadow: var(--shadow) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

.shadow-xl {
    box-shadow: var(--shadow-xl) !important;
}

/* =============================================
   5. COMPONENTS
============================================= */

/* 5.1 Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* Button Variants */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.35);
    transform: translateY(-3px);
}

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

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

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

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

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

.btn-white:hover {
    background: var(--gray-100);
    border-color: var(--gray-100);
}

/* Button Sizes */
.btn-sm {
    padding: 8px 20px;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 16px 36px;
    font-size: var(--font-size-lg);
}

/* Button Icons */
.btn i {
    font-size: 1.1em;
}

/* 5.2 Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.badge-primary {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.badge-secondary {
    background: rgba(14, 165, 233, 0.1);
    color: var(--secondary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

/* 5.3 Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

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

.card-body {
    padding: var(--space-lg);
}

.card-header {
    padding: var(--space-md) var(--space-lg);
    background: var(--light);
    border-bottom: 1px solid var(--gray-200);
}

.card-footer {
    padding: var(--space-md) var(--space-lg);
    background: var(--light);
    border-top: 1px solid var(--gray-200);
}

/* =============================================
   6. LAYOUT
============================================= */

/* 6.1 Container */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--space-lg);
}

/* 6.2 Section */
.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section-sm {
    padding: var(--space-2xl) 0;
}

.section-lg {
    padding: calc(var(--space-3xl) * 1.5) 0;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-badge {
    margin-top: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
    border-radius: var(--radius-full);
    margin-bottom: var(--space);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--dark);
    margin-bottom: var(--space);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* 6.3 Grid Systems */
.grid {
    display: grid;
    gap: var(--space-lg);
}

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

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

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

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

/* =============================================
   7. HEADER & NAVIGATION
============================================= */

/* 7.1 Top Bar */
.top-bar {
    background: var(--dark);
    color: var(--white);
    padding: 12px 0;
    font-size: var(--font-size-sm);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    transition: transform 0.3s ease;
}

.top-bar.hide {
    transform: translateY(-100%);
}

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

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 30px;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.top-bar-item:hover {
    color: var(--primary-light);
}

.top-bar-item i {
    color: var(--primary-light);
    font-size: 0.9em;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 7.2 Main Navigation */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 52px;
    left: 0;
    width: 100%;
    z-index: var(--z-sticky);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    top: 0;
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--dark);
    font-family: var(--font-primary);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
    margin: 0;
}

.nav-link {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
    border-radius: var(--radius-full);
}

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

.nav-cta {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 10px 25px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-primary);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    color: var(--white);
}

/* 7.3 Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--dark);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -8px);
}

/* =============================================
   8. HERO SECTION
============================================= */
.hero {
    min-height: 100vh;
    padding: 150px 0 80px;
    background: var(--gradient-light);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    color: var(--primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space);
    color: var(--dark);
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-xl);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
}

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

.stat-item h3 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-item p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: 0;
}

.hero-image {
    position: relative;
}

.hero-img-wrapper {
    position: relative;
    display: inline-block;
}

.hero-img-wrapper img {
    max-width: 500px;
    height: auto;
    position: relative;
    z-index: 2;
}

.hero-shape-1 {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    opacity: 0.5;
    z-index: 1;
}

.hero-shape-2 {
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 150px;
    height: 150px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    opacity: 0.3;
    z-index: 1;
}

/* =============================================
   9. ABOUT SECTION
============================================= */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.about-experience {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 30px 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-primary);
}

.about-experience h3 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.about-experience p {
    font-size: var(--font-size-base);
    margin-bottom: 0;
    color: var(--white);
}

.about-text h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space);
}

.about-text p {
    margin-bottom: var(--space-lg);
}

.about-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--space);
}

.info-item i {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
}

.info-item h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}

.info-item p {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0;
}

/* =============================================
   10. SERVICES SECTION
============================================= */
.services {
    background: var(--light);
}

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

.service-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    border-radius: var(--radius-xl);
    margin: 0 auto var(--space-lg);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    color: var(--white);
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space);
    color: var(--dark);
}

.service-card p {
    margin-bottom: var(--space-lg);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition);
}

.service-link:hover {
    gap: 12px;
}

/* =============================================
   11. PORTFOLIO SECTION
============================================= */
.portfolio {
    background: var(--white);
}

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

.filter-btn {
    padding: 10px 24px;
    background: transparent;
    color: var(--gray-600);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
    box-shadow: var(--shadow-primary);
}

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

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.portfolio-img {
    position: relative;
    overflow: hidden;
    height: 300px;
}

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

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.95), rgba(14, 165, 233, 0.95));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

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

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

.portfolio-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--white);
}

.portfolio-info p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space);
}

.portfolio-links {
    display: flex;
    justify-content: center;
    gap: var(--space);
}

.portfolio-link {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: var(--font-size-lg);
    transition: var(--transition);
}

.portfolio-link:hover {
    background: var(--white);
    color: var(--primary);
    transform: scale(1.1);
}

.portfolio-cta {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* =============================================
   12. SKILLS SECTION
============================================= */
.skills {
    background: var(--light);
}

.skills-content {
    display: grid;
    gap: var(--space-2xl);
}

.skills-category {
    text-align: center;
}

.skills-category h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.skills-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space);
}

.skill-item {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition);
    min-width: 120px;
}

.skill-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.skill-item i {
    font-size: var(--font-size-3xl);
    color: var(--primary);
    transition: var(--transition);
}

.skill-item:hover i {
    transform: scale(1.2) rotate(10deg);
}

.skill-item span {
    font-weight: 600;
    color: var(--dark);
}

/* =============================================
   13. TESTIMONIALS SECTION
============================================= */
.testimonials {
    background: var(--white);
}

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

.testimonial-card {
    background: var(--light);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.testimonial-content {
    margin-bottom: var(--space-lg);
}

.stars {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space);
}

.stars i {
    color: var(--warning);
    font-size: var(--font-size-lg);
}

.testimonial-content p {
    font-style: italic;
    color: var(--gray-600);
    line-height: var(--line-height-relaxed);
}

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

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.author-info p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: 0;
}

/* =============================================
   14. CTA SECTION
============================================= */
.cta {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
    padding: var(--space-3xl) 0;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--space);
    color: var(--white);
}

.cta-content p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    color: var(--white);
}

/* =============================================
   15. FOOTER
============================================= */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer-column h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--white);
}

.footer-logo {
    margin-bottom: var(--space-lg);
}

.footer-desc {
    color: var(--gray-400);
    margin-bottom: var(--space-lg);
    line-height: var(--line-height-relaxed);
}

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

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

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

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

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--gray-400);
    margin-bottom: var(--space);
}

.footer-contact i {
    color: var(--primary-light);
    font-size: var(--font-size-lg);
}

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

.footer-bottom p {
    color: var(--gray-400);
    margin: 0;
}

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

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

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

/* =============================================
   16. ADDITIONAL COMPONENTS
============================================= */

/* Social Links */
.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--gray-300);
    transition: var(--transition);
}

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

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: var(--z-tooltip);
    box-shadow: var(--shadow-primary);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.3);
}

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

.loader {
    width: 60px;
    height: 60px;
    border: 5px solid var(--gray-200);
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

/* =============================================
   17. ANIMATIONS
============================================= */

/* Fade Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@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);
    }
}

/* Scale Animations */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

    50% {
        transform: scale(1.05);
    }

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

/* Slide Animations */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

/* Utility Animation Classes */
.animate-fadeIn {
    animation: fadeIn 0.8s ease;
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease;
}

.animate-fadeInDown {
    animation: fadeInDown 0.8s ease;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease;
}

.animate-fadeInRight {
    animation: fadeInRight 0.8s ease;
}

.animate-scaleIn {
    animation: scaleIn 0.8s ease;
}

.animate-pulse {
    animation: pulse 2s ease infinite;
}

/* Hover Effects */
.hover-lift {
    transition: var(--transition);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: var(--transition);
}

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

.hover-shadow {
    transition: var(--transition);
}

.hover-shadow:hover {
    box-shadow: var(--shadow-lg);
}


/* =============================================
   END OF MAIN STYLESHEET
   
   Note: Responsive styles are in responsive.css
   Animation enhancements are in animations.css
============================================= */