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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

ul, ol {
    list-style: none;
}

/* ===== CSS CUSTOM PROPERTIES (DESIGN TOKENS) ===== */
:root {
    /* Professional Color Palette */
    --primary-color: #1a73e8; /* Professional blue */
    --primary-hover: #1765cc;
    --secondary-color: #34a853; /* Professional green */
    --secondary-hover: #2d9249;
    --accent-color: #ea4335; /* Professional accent red */
    --text-primary: #202124; /* Deep charcoal */
    --text-secondary: #5f6368; /* Medium gray */
    --text-light: #80868b; /* Light gray */
    --bg-light: #f8f9fa; /* Light background */
    --bg-white: #ffffff; /* Pure white */
    --bg-dark: #1a1a1a; /* Dark background */
    --border-color: #dadce0; /* Subtle border */
    --border-dark: #3c4043; /* Dark border */
    --shadow-light: 0 1px 2px rgba(60, 64, 67, 0.1);
    --shadow-medium: 0 2px 4px rgba(60, 64, 67, 0.15);
    --shadow-heavy: 0 4px 8px rgba(60, 64, 67, 0.2);
    --shadow-inset: inset 0 1px 2px rgba(60, 64, 67, 0.1);
    
    /* Typography */
    --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;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

:root[data-theme="dark"] {
    --primary-color: #60a5fa;
    --primary-hover: #3b82f6;
    --secondary-color: #34d399;
    --secondary-hover: #10b981;
    --accent-color: #fb7185;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-light: #94a3b8;
    --bg-light: #0f172a;
    --bg-white: #111827;
    --bg-dark: #020617;
    --border-color: #334155;
    --border-dark: #475569;
    --shadow-light: 0 1px 2px rgba(2, 6, 23, 0.4);
    --shadow-medium: 0 2px 4px rgba(2, 6, 23, 0.45);
    --shadow-heavy: 0 4px 8px rgba(2, 6, 23, 0.5);
    --shadow-inset: inset 0 1px 2px rgba(2, 6, 23, 0.35);
}

body[data-theme="dark"] {
    background-color: var(--bg-white);
    color: var(--text-primary);
}

body[data-theme="dark"] .site-header,
body[data-theme="dark"] .navbar,
body[data-theme="dark"] .nav-links.active {
    background-color: rgba(17, 24, 39, 0.95);
    border-color: var(--border-color);
}

body[data-theme="dark"] .nav-link,
body[data-theme="dark"] .nav-links a,
body[data-theme="dark"] .theme-toggle {
    color: var(--text-primary);
}

body[data-theme="dark"] .project-card,
body[data-theme="dark"] .skill-item,
body[data-theme="dark"] .highlight-card,
body[data-theme="dark"] .stat-card,
body[data-theme="dark"] .timeline-content,
body[data-theme="dark"] .server-config-card,
body[data-theme="dark"] .contact-form,
body[data-theme="dark"] .filter-btn {
    background-color: var(--bg-white);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body[data-theme="dark"] .tech-tag,
body[data-theme="dark"] .pill,
body[data-theme="dark"] .tech-badge {
    background-color: var(--bg-light);
    color: var(--text-primary);
}

body[data-theme="dark"] .btn-outline {
    color: var(--primary-color);
}

body[data-theme="dark"] .loading-screen {
    background-color: var(--bg-white);
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--text-primary);
}


.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 145, 255, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

.loading-message {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    opacity: 0.8;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

/* ===== SCROLL ANIMATIONS ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

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

/* ===== KEYBOARD NAVIGATION STYLES ===== */
.keyboard-navigation *:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===== REDUCED MOTION STYLES ===== */
.reduce-motion *,
.reduce-motion *::before,
.reduce-motion *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
}

/* ===== PROFESSIONAL HOVER EFFECTS ===== */
.btn:hover {
    transform: translateY(-1px);
}

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

.social-link:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* ===== FORM STYLES ===== */
.form-message {
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    border-radius: 6px;
    font-weight: 500;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.field-error {
    color: #721c24;
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
}

.error {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

/* ===== UTILITY CLASSES ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== BUTTON COMPONENTS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    min-height: 44px;
    min-width: 44px;
    box-shadow: var(--shadow-light);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

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

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

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
}

/* ===== HEADER & NAVIGATION ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}


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

.nav-link {
    font-weight: 500;
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: 6px;
    position: relative;
    transition: all var(--transition-base);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 1px;
}

/* Mobile Navigation Toggle */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    transform: translateY(-1px);
    background-color: var(--bg-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-sm);
    border-radius: 6px;
    transition: background-color var(--transition-base);
}

.nav-toggle:hover {
    background-color: var(--bg-light);
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 1px;
    transition: all var(--transition-base);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-top: 70px;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.85), rgba(52, 168, 83, 0.7));
    z-index: -1;
}

.hero-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.2;
    color: var(--bg-white);
    margin-bottom: var(--space-lg);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.hero-highlight {
    color: var(--secondary-color);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

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

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

.stat-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--secondary-color);
    transition: all 0.3s ease;
    will-change: contents;
}

.stat-number[data-animated="true"] {
    color: var(--primary-color);
}

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

/* ===== FEATURED PROJECTS ===== */
.featured-projects {
    padding: var(--space-xl) 0;
    background-color: var(--bg-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.project-card {
    background-color: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-base);
    position: relative;
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.project-image {
    position: relative;
    height: 240px;
    overflow: hidden;
}

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

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 115, 232, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-content {
    padding: var(--space-xl);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tech-tag {
    background-color: var(--bg-light);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

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

/* ===== SKILLS PREVIEW ===== */
.skills-preview {
    padding: var(--space-xl) 0;
    background-color: var(--bg-white);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.skill-item {
    text-align: center;
    padding: var(--space-xl);
    border-radius: 12px;
    background-color: var(--bg-light);
    transition: transform var(--transition-base);
}

.skill-item:hover {
    transform: translateY(-4px);
}

.skill-icon {
    font-size: var(--font-size-4xl);
    color: var(--primary-color);
    margin-bottom: var(--space-md);
}

/* LinkedIn icon color */
.fab.fa-linkedin { color: #0A66C2; } /* Official LinkedIn blue */

/* Professional Icon Colors - Technology Specific */
.fab.fa-html5 { color: #E34F26; } /* HTML5 orange */
.fab.fa-js-square { color: #F7DF1E; } /* JavaScript yellow */
.fab.fa-php { color: #777BB4; } /* PHP purple */
.fab.fa-python { color: #3776AB; } /* Python blue */
.fab.fa-git-alt { color: #F05032; } /* Git orange */
.fab.fa-github { color: #181717; } /* GitHub black */
.fab.fa-docker { color: #2496ED; } /* Docker blue */
.fab.fa-react { color: #61DAFB; } /* React cyan */
.fas.fa-microchip { color: #007ACC; } /* Microchip blue */
.fas.fa-home { color: #4285F4; } /* Home blue */
.fas.fa-server { color: #0078D4; } /* Server blue */
.fas.fa-network-wired { color: #00A1F1; } /* Network blue */
.fas.fa-users-cog { color: #0066CC; } /* Active Directory blue */
.fas.fa-windows { color: #0078D6; } /* Windows blue */
.fas.fa-linux { color: #FCC624; } /* Linux yellow */
.fas.fa-cube { color: #4285F4; } /* Virtualization blue */
.fas.fa-shield-alt { color: #00A86B; } /* Security green */
.fas.fa-tools { color: #FF6B35; } /* Tools orange */
.fas.fa-diagnoses { color: #FF4500; } /* Diagnostics red */
.fas.fa-cog { color: #4CAF50; } /* Cog green */
.fas.fa-sync-alt { color: #2B3A67; } /* CI/CD dark blue */
.fas.fa-code { color: #3178C6; } /* Code blue */
.fas.fa-cogs { color: #1a73e8; } /* DevOps blue */
.fas.fa-server { color: #0078D4; } /* Server blue */
.fas.fa-tools { color: #FF6B35; } /* Tools orange */
.fas.fa-diagnoses { color: #FF4500; } /* Diagnostics red */
.fas.fa-cog { color: #4CAF50; } /* Cog green */
.fas.fa-windows { color: #0078D6; } /* Windows blue */
.fas.fa-linux { color: #FCC624; } /* Linux yellow */
.fas.fa-cube { color: #4285F4; } /* Virtualization blue */
.fas.fa-shield-alt { color: #00A86B; } /* Security green */
.fas.fa-globe { color: #4285F4; } /* Web development blue */
.fas.fa-microchip { color: #007ACC; } /* Embedded systems blue */
.fas.fa-server { color: #0078D4; } /* Server administration blue */
.fas.fa-tools { color: #FF6B35; } /* Technical consulting orange */
.fas.fa-hiking { color: #4CAF50; } /* Hiking green */
.fas.fa-gamepad { color: #FF5722; } /* Gaming orange */
.fas.fa-music { color: #9C27B0; } /* Music purple */
.fas.fa-lightbulb { color: #FFC107; } /* Technology yellow */
.fas.fa-briefcase { color: #2196F3; } /* Work blue */
.fas.fa-graduation-cap { color: #0078D4; } /* Education blue */
.fas.fa-envelope { color: #4285F4; } /* Email blue */
.fas.fa-phone { color: #4CAF50; } /* Phone green */
.fas.fa-map-marker-alt { color: #F44336; } /* Location red */
.fas.fa-clock { color: #FF9800; } /* Time orange */
.fas.fa-calendar { color: #3F51B5; } /* Calendar indigo */
.fas.fa-user { color: #2196F3; } /* User blue */
.fas.fa-heart { color: #F44336; } /* Heart red */
.fas.fa-star { color: #FFC107; } /* Star yellow */
.fas.fa-check { color: #4CAF50; } /* Check green */
.fas.fa-times { color: #F44336; } /* Times red */
.fas.fa-info { color: #2196F3; } /* Info blue */
.fas.fa-exclamation { color: #FF9800; } /* Warning orange */
.fas.fa-question { color: #9C27B0; } /* Question purple */
.fas.fa-plus { color: #4CAF50; } /* Plus green */
.fas.fa-minus { color: #F44336; } /* Minus red */
.fas.fa-arrow-right { color: #2196F3; } /* Arrow blue */
.fas.fa-arrow-left { color: #2196F3; } /* Arrow blue */
.fas.fa-arrow-up { color: #2196F3; } /* Arrow blue */
.fas.fa-arrow-down { color: #2196F3; } /* Arrow blue */
.fas.fa-search { color: #2196F3; } /* Search blue */
.fas.fa-cog { color: #9E9E9E; } /* Settings gray */
.fas.fa-home { color: #4285F4; } /* Home blue */
.fas.fa-bars { color: #616161; } /* Menu gray */
.fas.fa-times { color: #616161; } /* Close gray */
.fas.fa-chevron-down { color: #616161; } /* Chevron gray */
.fas.fa-chevron-up { color: #616161; } /* Chevron gray */
.fas.fa-chevron-left { color: #616161; } /* Chevron gray */
.fas.fa-chevron-right { color: #616161; } /* Chevron gray */
.fas.fa-external-link-alt { color: #2196F3; } /* External link blue */
.fas.fa-download { color: #4CAF50; } /* Download green */
.fas.fa-upload { color: #2196F3; } /* Upload blue */
.fas.fa-share { color: #2196F3; } /* Share blue */
.fas.fa-bookmark { color: #FFC107; } /* Bookmark yellow */
.fas.fa-eye { color: #2196F3; } /* Eye blue */
.fas.fa-eye-slash { color: #9E9E9E; } /* Eye slash gray */
.fas.fa-lock { color: #616161; } /* Lock gray */
.fas.fa-unlock { color: #4CAF50; } /* Unlock green */
.fas.fa-link { color: #2196F3; } /* Link blue */
.fas.fa-unlink { color: #F44336; } /* Unlink red */
.fas.fa-copy { color: #2196F3; } /* Copy blue */
.fas.fa-cut { color: #F44336; } /* Cut red */
.fas.fa-paste { color: #4CAF50; } /* Paste green */
.fas.fa-save { color: #4CAF50; } /* Save green */
.fas.fa-print { color: #616161; } /* Print gray */
.fas.fa-trash { color: #F44336; } /* Trash red */
.fas.fa-edit { color: #2196F3; } /* Edit blue */
.fas.fa-pencil-alt { color: #2196F3; } /* Pencil blue */
.fas.fa-pen { color: #2196F3; } /* Pen blue */
.fas.fa-file { color: #616161; } /* File gray */
.fas.fa-folder { color: #FFC107; } /* Folder yellow */
.fas.fa-image { color: #9C27B0; } /* Image purple */
.fas.fa-video { color: #F44336; } /* Video red */
.fas.fa-camera { color: #616161; } /* Camera gray */
.fas.fa-microphone { color: #F44336; } /* Microphone red */
.fas.fa-volume-up { color: #2196F3; } /* Volume blue */
.fas.fa-volume-down { color: #2196F3; } /* Volume blue */
.fas.fa-volume-off { color: #9E9E9E; } /* Volume off gray */
.fas.fa-play { color: #4CAF50; } /* Play green */
.fas.fa-pause { color: #FF9800; } /* Pause orange */
.fas.fa-stop { color: #F44336; } /* Stop red */
.fas.fa-forward { color: #2196F3; } /* Forward blue */
.fas.fa-backward { color: #2196F3; } /* Backward blue */
.fas.fa-step-forward { color: #2196F3; } /* Step forward blue */
.fas.fa-step-backward { color: #2196F3; } /* Step backward blue */
.fas.fa-eject { color: #9E9E9E; } /* Eject gray */
.fas.fa-plus-circle { color: #4CAF50; } /* Plus circle green */
.fas.fa-minus-circle { color: #F44336; } /* Minus circle red */
.fas.fa-times-circle { color: #F44336; } /* Times circle red */
.fas.fa-check-circle { color: #4CAF50; } /* Check circle green */
.fas.fa-question-circle { color: #2196F3; } /* Question circle blue */
.fas.fa-info-circle { color: #2196F3; } /* Info circle blue */
.fas.fa-exclamation-circle { color: #FF9800; } /* Exclamation circle orange */
.fas.fa-exclamation-triangle { color: #FF9800; } /* Exclamation triangle orange */
.fas.fa-ban { color: #F44336; } /* Ban red */
.fas.fa-check-square { color: #4CAF50; } /* Check square green */
.fas.fa-square { color: #9E9E9E; } /* Square gray */
.fas.fa-circle { color: #9E9E9E; } /* Circle gray */
.fas.fa-dot-circle { color: #2196F3; } /* Dot circle blue */
.fas.fa-star-half { color: #FFC107; } /* Star half yellow */
.fas.fa-star-half-alt { color: #FFC107; } /* Star half alt yellow */
.fas.fa-thumbs-up { color: #4CAF50; } /* Thumbs up green */
.fas.fa-thumbs-down { color: #F44336; } /* Thumbs down red */
.fas.fa-hand-pointer { color: #2196F3; } /* Hand pointer blue */
.fas.fa-hand-paper { color: #FF9800; } /* Hand paper orange */
.fas.fa-hand-rock { color: #9E9E9E; } /* Hand rock gray */
.fas.fa-hand-scissors { color: #F44336; } /* Hand scissors red */
.fas.fa-hand-lizard { color: #4CAF50; } /* Hand lizard green */
.fas.fa-hand-spock { color: #2196F3; } /* Hand spock blue */
.fas.fa-flag { color: #F44336; } /* Flag red */
.fas.fa-book { color: #2196F3; } /* Book blue */
.fas.fa-newspaper { color: #616161; } /* Newspaper gray */
.fas.fa-graduation-cap { color: #0078D4; } /* Graduation cap blue */
.fas.fa-briefcase { color: #2196F3; } /* Briefcase blue */
.fas.fa-building { color: #616161; } /* Building gray */
.fas.fa-hospital { color: #F44336; } /* Hospital red */
.fas.fa-university { color: #0078D4; } /* University blue */
.fas.fa-school { color: #FF9800; } /* School orange */
.fas.fa-industry { color: #616161; } /* Industry gray */
.fas.fa-factory { color: #616161; } /* Factory gray */
.fas.fa-warehouse { color: #FF9800; } /* Warehouse orange */
.fas.fa-store { color: #4CAF50; } /* Store green */
.fas.fa-shopping-cart { color: #2196F3; } /* Shopping cart blue */
.fas.fa-credit-card { color: #4CAF50; } /* Credit card green */
.fas.fa-money-bill { color: #4CAF50; } /* Money bill green */
.fas.fa-coins { color: #FFC107; } /* Coins yellow */
.fas.fa-gem { color: #9C27B0; } /* Gem purple */
.fas.fa-diamond { color: #2196F3; } /* Diamond blue */
.fas.fa-gift { color: #F44336; } /* Gift red */
.fas.fa-birthday-cake { color: #FF9800; } /* Birthday cake orange */
.fas.fa-glass-cheers { color: #FFC107; } /* Glass cheers yellow */
.fas.fa-coffee { color: #795548; } /* Coffee brown */
.fas.fa-beer { color: #FFC107; } /* Beer yellow */
.fas.fa-wine-glass { color: #9C27B0; } /* Wine glass purple */
.fas.fa-cocktail { color: #F44336; } /* Cocktail red */
.fas.fa-utensils { color: #616161; } /* Utensils gray */
.fas.fa-pizza-slice { color: #FF9800; } /* Pizza slice orange */
.fas.fa-hamburger { color: #FF9800; } /* Hamburger orange */
.fas.fa-fish { color: #2196F3; } /* Fish blue */
.fas.fa-carrot { color: #FF9800; } /* Carrot orange */
.fas.fa-apple-alt { color: #F44336; } /* Apple red */
.fas.fa-lemon { color: #FFC107; } /* Lemon yellow */
.fas.fa-pepper-hot { color: #F44336; } /* Pepper hot red */
.fas.fa-seedling { color: #4CAF50; } /* Seedling green */
.fas.fa-tree { color: #4CAF50; } /* Tree green */
.fas.fa-mountain { color: #795548; } /* Mountain brown */
.fas.fa-sun { color: #FFC107; } /* Sun yellow */
.fas.fa-moon { color: #616161; } /* Moon gray */
.fas.fa-cloud { color: #9E9E9E; } /* Cloud gray */
.fas.fa-cloud-sun { color: #FFC107; } /* Cloud sun yellow */
.fas.fa-cloud-moon { color: #9E9E9E; } /* Cloud moon gray */
.fas.fa-cloud-rain { color: #2196F3; } /* Cloud rain blue */
.fas.fa-cloud-showers-heavy { color: #2196F3; } /* Cloud showers heavy blue */
.fas.fa-snowflake { color: #B3E5FC; } /* Snowflake light blue */
.fas.fa-umbrella { color: #2196F3; } /* Umbrella blue */
.fas.fa-temperature-high { color: #F44336; } /* Temperature high red */
.fas.fa-temperature-low { color: #2196F3; } /* Temperature low blue */
.fas.fa-wind { color: #9E9E9E; } /* Wind gray */
.fas.fa-compass { color: #2196F3; } /* Compass blue */
.fas.fa-map { color: #4CAF50; } /* Map green */
.fas.fa-map-marked { color: #F44336; } /* Map marked red */
.fas.fa-map-marked-alt { color: #F44336; } /* Map marked alt red */
.fas.fa-globe { color: #2196F3; } /* Globe blue */
.fas.fa-globe-africa { color: #4CAF50; } /* Globe Africa green */
.fas.fa-globe-americas { color: #2196F3; } /* Globe Americas blue */
.fas.fa-globe-asia { color: #FF9800; } /* Globe Asia orange */
.fas.fa-globe-europe { color: #0078D4; } /* Globe Europe blue */
.fas.fa-flag-usa { color: #F44336; } /* Flag USA red */
.fas.fa-flag-uk { color: #0078D4; } /* Flag UK blue */
.fas.fa-flag-canada { color: #F44336; } /* Flag Canada red */
.fas.fa-flag-australia { color: #2196F3; } /* Flag Australia blue */
.fas.fa-flag-germany { color: #F44336; } /* Flag Germany red */
.fas.fa-flag-france { color: #2196F3; } /* Flag France blue */
.fas.fa-flag-spain { color: #F44336; } /* Flag Spain red */
.fas.fa-flag-italy { color: #4CAF50; } /* Flag Italy green */
.fas.fa-flag-japan { color: #F44336; } /* Flag Japan red */
.fas.fa-flag-china { color: #F44336; } /* Flag China red */
.fas.fa-flag-india { color: #FF9800; } /* Flag India orange */
.fas.fa-flag-brazil { color: #4CAF50; } /* Flag Brazil green */
.fas.fa-flag-russia { color: #2196F3; } /* Flag Russia blue */
.fas.fa-flag-south-africa { color: #FFC107; } /* Flag South Africa yellow */
.fas.fa-flag-uganda { color: #FFC107; } /* Flag Uganda yellow */

.skill-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.skill-bar {
    background-color: rgba(0, 145, 255, 0.1);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s ease-out;
}

/* ===== FOOTER ===== */
.site-footer {
    background-color: var(--bg-dark);
    color: white;
    padding: var(--space-xl) 0 var(--space-sm);
    border-top: 1px solid var(--border-dark);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--primary-color);
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: rgba(255, 255, 255, 0.9);
    transition: color var(--transition-base);
}

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

.contact-link i {
    width: 20px;
    text-align: center;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-lg);
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: #ffffff;
    border-radius: 50%;
    color: #0f172a;
    transition: all var(--transition-base);
    border: 1px solid #dbeafe;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.14);
}

.contact .social-link.whatsapp {
    color: #25D366;
}

.contact .social-link.gmail {
    color: #DB4437;
}

.contact .social-link.github {
    color: #24292F;
}

.contact .social-link.linkedin {
    color: #0A66C2;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-dark);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

/* ===== PROFESSIONAL VISUAL EFFECTS ===== */

/* Clean page transitions */
.page-transition {
    opacity: 0;
    transform: translateY(10px);
    animation: pageEnter 0.4s ease-out forwards;
}

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

/* Professional scroll progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--primary-color);
    z-index: 9999;
    transition: width 0.1s ease;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: center;
        gap: var(--space-2xl);
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --space-4xl: 3rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: var(--space-xl);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .nav-toggle.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--space-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-5xl: 1.875rem;
        --font-size-4xl: 1.5rem;
        --font-size-3xl: 1.5rem;
        --space-4xl: 2rem;
        --space-2xl: 1.5rem;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .project-content {
        padding: var(--space-md);
    }
    
    .skill-item {
        padding: var(--space-md);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
}