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

:root {
    /* Dark Red Theme Colors */
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --secondary-color: #9ca3af;
    --accent-color: #0ea5e9;
    
    /* Background Colors - Always Dark */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #151515;
    
    /* Text Colors - Always Light */
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --text-inverse: #ffffff;
    
    /* Border Colors - Always Dark */
    --border-color: #262626;
    --border-light: #1f1f1f;
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Shadow - Darker for dark theme */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6), 0 8px 10px -6px rgb(0 0 0 / 0.5);
    
    /* 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;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1050;
    --z-tooltip: 1070;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* RTL Support */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .navbar__nav {
    flex-direction: row-reverse;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== UTILITY CLASSES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn--outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn--outline:hover {
    background-color: var(--primary-color);
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.section-header__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

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

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.navbar--scrolled {
    box-shadow: var(--shadow-md);
}

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

.navbar__brand {
    display: flex;
    align-items: center;
}

.navbar__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.navbar__logo i {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
}

.navbar__menu {
    display: flex;
    align-items: center;
}

.navbar__nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.navbar__link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-fast);
}

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

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

/* Language Toggle */
.language-toggle__btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.language-toggle__btn:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

.language-toggle__text {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* Theme Toggle */
.theme-toggle__btn {
    position: relative;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
}

.theme-toggle__btn:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

.theme-toggle__icon--dark {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--light {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--dark {
    display: block;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
}

.mobile-menu-toggle__btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle__btn:hover {
    background-color: var(--bg-secondary);
}

.hamburger {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    background: var(--bg-primary);
}

.hero__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
}

.hero__content {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.hero__greeting {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero__name {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.hero__scroll {
    text-align: center;
}

.hero__scroll-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    animation: bounce 2s infinite;
}

.hero__scroll-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.about__content {
    display: grid;
    gap: var(--spacing-2xl);
}

.about__bio {
    background-color: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.about__bio p {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.about__highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.highlight-card {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
    border: 1px solid var(--border-color);
}

.highlight-card:hover {
    transform: translateY(-3px);
}

.highlight-card__icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-lg);
}

.highlight-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.highlight-card__text {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    line-height: 1.5;
}

.about__stats {
    max-width: 600px;
    margin: 0 auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background-color: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

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

.stat-card__number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.stat-card__label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: var(--spacing-3xl) 0;
}

.project-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-lg);
    background-color: transparent;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
    will-change: transform;
    backface-visibility: hidden;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.project-card__image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-xl);
    position: relative;
    overflow: hidden;
}

.project-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Default image fallback - when no image is loaded */
.project-card__image--no-image::before {
    content: "\f121";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: var(--font-size-2xl);
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.project-card__image--no-image {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-card__content {
    padding: var(--spacing-md);
}

.project-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    line-height: 1.3;
}

.project-card__company {
    font-size: var(--font-size-xs);
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.project-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.btn--small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

/* Tech Tags Styles - Used in project details */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.tech-tag {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-secondary);
}

.experience__timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.experience__timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
    padding-left: 80px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 22px;
    top: 8px;
    width: 16px;
    height: 16px;
    background-color: var(--primary-color);
    border-radius: var(--radius-full);
    border: 4px solid var(--bg-card);
}

.timeline-item__content {
    background-color: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.timeline-item__header {
    margin-bottom: var(--spacing-md);
}

.timeline-item__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-item__company {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.timeline-item__period {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.timeline-item__description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.timeline-item__achievements {
    list-style: none;
}

.timeline-item__achievements li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.timeline-item__achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* ===== SKILLS SECTION ===== */
.skills {
    padding: var(--spacing-3xl) 0;
}

.skills__content {
    display: grid;
    gap: var(--spacing-2xl);
}

.skills-category {
    background-color: var(--bg-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.skills-category__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.skills-category__title i {
    color: var(--primary-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-md);
}

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

.skill-item__icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-lg);
}

.skill-item__name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.skill-item__level {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
}

/* ===== CERTIFICATIONS SECTION ===== */
.certifications {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-secondary);
}

.certifications__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 280px));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
    justify-content: center;
}

@media (max-width: 1024px) {
    .certifications__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .certifications__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .certifications__grid {
        grid-template-columns: 1fr;
    }
}

.certification-card {
    background-color: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

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

.certification-card__badge {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-lg);
}

.certification-card__title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.certification-card__issuer {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-xs);
}

.certification-card__date {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
}

.certification-card .btn{
    padding: 10px !important;
    margin-top: var(--spacing-md);
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--spacing-3xl) 0;
}

.contact__content {
    max-width: 800px;
    margin: 0 auto;
}

.contact__cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.contact-card__icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-xl);
    transition: transform var(--transition-normal);
}

.contact-card:hover .contact-card__icon {
    transform: scale(1.1);
}

.contact-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-card__value {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.contact-card__action {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--primary-color);
    color: var(--text-inverse);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.contact-card:hover .contact-card__action {
    background-color: var(--primary-dark);
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-color);
}

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

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

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

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--primary-color);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

/* ===== LOADING SPINNER ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading--active {
    opacity: 1;
    visibility: visible;
}

.loading__spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .navbar__nav {
        gap: var(--spacing-lg);
    }
    
    .navbar__container {
        padding: 0 var(--spacing-md);
    }
    
    .about__highlights {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .navbar__menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-card);
        border-top: 1px solid var(--border-color);
        transform: translateY(-100%);
        transition: transform var(--transition-normal);
        z-index: var(--z-dropdown);
        box-shadow: var(--shadow-lg);
        backdrop-filter: blur(10px);
        opacity: 0;
        visibility: hidden;
    }
    
    .navbar__menu--active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .navbar__nav {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
    }
    
    .navbar__link {
        font-size: var(--font-size-lg);
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--border-color);
        width: 100%;
    }
    
    .navbar__link:last-child {
        border-bottom: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .navbar__controls {
        order: 2;
    }
    
    .navbar__brand {
        order: 1;
    }
    
    .hero__title {
        font-size: var(--font-size-4xl);
    }
    
    .hero__cta {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .section-header__title {
        font-size: var(--font-size-2xl);
    }
    
    .projects__grid {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .about__highlights {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: var(--spacing-md);
    }
    
    .highlight-card {
        padding: var(--spacing-lg);
    }
    
    .highlight-card__icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .contact__cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .contact-card {
        padding: var(--spacing-xl);
    }
    
    .contact-card__icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-xl);
    }
    
    .footer__content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .navbar__container {
        padding: 0 var(--spacing-md);
        height: 60px;
    }
    
    .navbar {
        height: 60px;
    }
    
    .navbar__menu {
        top: 60px;
    }
    
    .navbar__logo {
        font-size: var(--font-size-md);
    }
    
    .navbar__logo i {
        font-size: var(--font-size-lg);
    }
    
    .mobile-menu-toggle__btn {
        padding: var(--spacing-xs);
    }
    
    .hamburger {
        width: 20px;
        height: 2px;
    }
    
    .hero {
        padding-top: 60px;
    }
    
    .hero__title {
        font-size: var(--font-size-3xl);
    }
    
    .hero__cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .experience__timeline::before {
        left: 15px;
    }
    
    .timeline-item::before {
        left: 7px;
    }
    
    .about__highlights {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    }
    
    .certifications__grid {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero__scroll-link {
        animation: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
    
    [data-theme="dark"] {
        --border-color: #ffffff;
        --text-secondary: #ffffff;
    }
}

/* Focus styles for accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .hero__scroll,
    .contact__form,
    .footer__social {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .hero,
    .about,
    .projects,
    .experience,
    .skills,
    .certifications,
    .contact {
        page-break-inside: avoid;
        padding: 1rem 0;
    }
}

/* ===== LANGUAGE TRANSITION EFFECTS ===== */
body.lang-ar {
    direction: rtl;
    text-align: right;
}

body.lang-en {
    direction: ltr;
    text-align: left;
}