/* ============================================
   Portfolio CSS - Omer Younas | Flutter Developer
   ============================================ */

/* ============================================
   CSS Variables (Design System)
   ============================================ */
:root {
    /* Colors - Light Theme */
    --primary: #02569B;
    --accent: #13B9FD;
    --bg: #f5f5f5;
    --text: #333;
    --text-secondary: #666;
    --card-bg: white;

    /* 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;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 15px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Typography */
    --font-base: 1rem;
    --line-height-base: 1.6;
    --line-height-tight: 1.2;
}

/* Dark Theme */
[data-theme="dark"] {
    --primary: #13B9FD;
    --accent: #02569B;
    --bg: #1a1a1a;
    --text: #e0e0e0;
    --text-secondary: #b0b0b0;
    --card-bg: #2d2d2d;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: var(--line-height-base);
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    background: var(--primary);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-base);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

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

.nav a:hover,
.nav a.active {
    color: var(--accent);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition-base);
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* Theme Toggle */
.theme-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
    margin-left: var(--space-md);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   Header / Hero Section
   ============================================ */
header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.profile-img {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    border: 4px solid white;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

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

/* ============================================
   Typography
   ============================================ */
h1 {
    font-size: clamp(2rem, 5vw, 2.5rem);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-tight);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2rem);
    margin-bottom: var(--space-lg);
    color: var(--primary);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    margin-bottom: var(--space-md);
}

h4 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-md);
}

/* ============================================
   Main Content
   ============================================ */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl);
}

section {
    margin-bottom: var(--space-3xl);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ============================================
   Bio Section
   ============================================ */
.bio {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
}

.bio p {
    line-height: 1.8;
    font-size: 1.05rem;
}

/* ============================================
   Projects Grid
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

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

.project-content h3 {
    color: var(--primary);
    margin-bottom: var(--space-sm);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.project-links {
    margin-top: var(--space-md);
}

.project-links a {
    display: inline-block;
    margin-right: var(--space-md);
    color: var(--primary);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.project-links a:hover {
    color: var(--accent);
}

/* ============================================
   Skills Grid
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.skill-item {
    background: var(--card-bg);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.skill-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Experience Cards
   ============================================ */
.experience-card {
    background: var(--card-bg);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}

.experience-card:hover {
    box-shadow: var(--shadow-md);
}

.experience-card h3 {
    color: var(--primary);
    margin-bottom: var(--space-sm);
}

.experience-card h4 {
    color: var(--accent);
    margin-bottom: var(--space-sm);
}

.experience-card h5 {
    margin: var(--space-md) 0 var(--space-sm);
    color: var(--primary);
}

.date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
    font-style: italic;
}

.experience-list {
    list-style: none;
    margin-top: var(--space-md);
}

.experience-list li {
    margin-bottom: var(--space-sm);
    padding-left: var(--space-lg);
    position: relative;
}

.experience-list li::before {
    content: "•";
    color: var(--accent);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1.5rem;
    line-height: 1;
}

/* ============================================
   Education Card
   ============================================ */
.education-card {
    background: var(--card-bg);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.education-card h3 {
    color: var(--primary);
    margin-bottom: var(--space-sm);
}

.education-card h4 {
    color: var(--accent);
    margin-bottom: var(--space-sm);
}

/* ============================================
   Contact Section
   ============================================ */
#contact {
    background-color: var(--card-bg);
    padding: var(--space-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

#contact h2 {
    margin-bottom: var(--space-md);
}

#contact p {
    margin: var(--space-sm) 0;
    font-size: 1rem;
}

#contact a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

#contact a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.icon {
    margin-right: var(--space-sm);
}

.icon.email {
    color: #d93025;
}

.icon.linkedin {
    color: #0077b5;
}

.icon.github {
    color: #24292e;
}

/* ============================================
   Footer
   ============================================ */
footer {
    background: var(--primary);
    color: white;
    text-align: center;
    padding: var(--space-xl);
    margin-top: var(--space-3xl);
}

footer p {
    margin-bottom: var(--space-sm);
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-fast);
    z-index: 99;
}

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

.scroll-to-top:hover {
    transform: translateY(-5px);
    background: var(--accent);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .nav-content {
        flex-wrap: wrap;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        text-align: center;
        padding-top: var(--space-md);
        gap: var(--space-md);
    }

    .nav-links.active {
        display: flex;
    }

    .theme-toggle {
        margin-left: auto;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

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

    main {
        padding: var(--space-md);
    }

    .experience-card,
    .education-card {
        padding: var(--space-md);
    }

    .scroll-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    header {
        padding: var(--space-xl) var(--space-md);
    }

    .profile-img {
        width: 120px;
        height: 120px;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: var(--space-sm);
}

.mt-2 {
    margin-top: var(--space-md);
}

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

.mt-4 {
    margin-top: var(--space-xl);
}

.mb-1 {
    margin-bottom: var(--space-sm);
}

.mb-2 {
    margin-bottom: var(--space-md);
}

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

.mb-4 {
    margin-bottom: var(--space-xl);
}

/* ============================================
   Accessibility
   ============================================ */
*:focus {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

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

*:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================
   Hero Stats & CTA Buttons
   ============================================ */
.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin: var(--space-2xl) 0;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-width: 100px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: var(--space-sm);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-2xl);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn i {
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: transparent;
    color: white;
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* ============================================
   Contact Form & Info
   ============================================ */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.contact-info h3,
.contact-form-wrapper h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--space-lg);
}

/* Contact Info Cards */
.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--card-bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.contact-info-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.contact-info-card i {
    font-size: 1.5rem;
    margin-top: 2px;
}

.contact-info-card h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.contact-info-card p,
.contact-info-card a {
    font-size: 1rem;
    margin: 0;
    color: var(--text);
}

.contact-info-card a {
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.resume-download {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white !important;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-base);
}

.resume-download:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Contact Form Wrapper */
.contact-form-wrapper {
    background: var(--card-bg);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* Form Styles */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.form-group label {
    font-weight: 500;
    color: var(--text);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text);
    background: var(--bg);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(2, 86, 155, 0.1);
}

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

.error-message {
    color: #dc2626;
    font-size: 0.875rem;
    display: none;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #dc2626;
}

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

.submit-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.form-status {
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.form-status.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* ============================================
   Responsive Contact Section
   ============================================ */
@media (max-width: 968px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-stats {
        gap: var(--space-lg);
    }

    .stat-number {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        padding: 0 var(--space-md);
    }

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

    .contact-form-wrapper {
        padding: var(--space-lg);
    }
}

/* ============================================
   Project Filters
   ============================================ */
.project-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: var(--space-2xl);
}

.filter-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    color: var(--text-primary);
    border: none;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Roboto', sans-serif;
}

.filter-btn:hover {
    background: var(--bg-secondary);
    transform: translateY(-1px);
}

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

.filter-btn i {
    font-size: 1rem;
    opacity: 0.8;
}

.filter-btn.active i {
    opacity: 1;
}

.filter-text {
    font-size: 0.9rem;
    letter-spacing: -0.01em;
}

.filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.filter-btn.active .filter-count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

@media (max-width: 768px) {
    .project-filters {
        gap: 8px;
    }

    .filter-btn {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    .filter-text {
        display: none;
    }

    .filter-count {
        min-width: 20px;
        height: 20px;
        font-size: 0.7rem;
    }
}

/* ============================================
   Testimonials Section
   ============================================ */
#testimonials {
    background: var(--bg-secondary);
    padding: var(--space-3xl) var(--space-xl);
}

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

.testimonial-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

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

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

.quote-icon {
    color: var(--accent);
    font-size: 2rem;
    margin-bottom: var(--space-md);
    opacity: 0.3;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    font-style: italic;
    margin: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--text-secondary);
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.author-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.author-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.rating {
    display: flex;
    gap: 0.25rem;
    color: #fbbf24;
    font-size: 0.9rem;
}

.testimonial-cta {
    text-align: center;
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
}

.testimonial-cta p {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-weight: 500;
}

/* Responsive Testimonials */
@media (max-width: 968px) {
    .testimonials-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    #testimonials {
        padding: var(--space-2xl) var(--space-md);
    }

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

/* ============================================
   Service Worker Update Notification
   ============================================ */
.update-notification {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    transition: bottom var(--transition-base);
    max-width: 90%;
    width: 500px;
}

.update-notification.show {
    bottom: var(--space-xl);
}

.update-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-primary);
}

.update-content i.fa-info-circle {
    color: var(--accent);
    font-size: 1.5rem;
}

.update-content span {
    flex: 1;
    font-weight: 500;
}

.update-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.update-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.dismiss-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-sm);
    transition: color var(--transition-fast);
}

.dismiss-btn:hover {
    color: var(--text-primary);
}

/* ============================================
   Performance Optimizations
   ============================================ */

/* Enable GPU acceleration for animations */
.project-card,
.skill-card,
.experience-card,
.education-card,
.scroll-to-top,
.btn {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Optimize font rendering */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print styles */
@media print {

    .nav,
    .scroll-to-top,
    .theme-toggle,
    .mobile-menu-toggle,
    .contact-form,
    .update-notification {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .project-card,
    .experience-card,
    .education-card {
        page-break-inside: avoid;
    }
}

/* ============================================
   Blog Section Styles
   ============================================ */

/* Blog Page */
.blog-page {
    padding-top: 80px;
}

.blog-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: var(--space-3xl) var(--space-md);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.blog-header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.blog-header .subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
}

.blog-posts {
    padding: var(--space-2xl) var(--space-md);
}

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

/* Blog Posts Grid - New dynamic layout */
.blog-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-xl);
}

/* Blog Card */
.blog-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
}

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

.blog-card-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

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

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

.blog-tag {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--primary);
    color: white;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

.blog-card-content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-meta {
    display: flex;
    gap: var(--space-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.blog-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.blog-card-content h2 {
    font-size: 1.4rem;
    margin-bottom: var(--space-md);
    line-height: var(--line-height-tight);
}

.blog-card-content h2 a {
    color: var(--text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-card-content h2 a:hover {
    color: var(--primary);
}

.blog-card-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    flex: 1;
}

.read-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: gap var(--transition-fast);
}

.read-more:hover {
    gap: var(--space-sm);
}

/* Individual Blog Post */
.blog-post {
    padding-top: 80px;
}

.post-header {
    background: var(--bg);
    padding: var(--space-2xl) var(--space-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.post-header .container {
    max-width: 800px;
    margin: 0 auto;
}

.back-link {
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    font-weight: 500;
    transition: gap var(--transition-fast);
    position: relative;
    z-index: 10;
    cursor: pointer;
}

.back-link:hover {
    gap: var(--space-sm);
}

.post-header h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
    color: var(--text);
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.post-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-md);
}

.featured-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-md);
}

.post-content .lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: var(--space-2xl);
    padding-left: var(--space-lg);
    border-left: 4px solid var(--primary);
}

.post-content h2 {
    font-size: 2rem;
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-lg);
    color: var(--text);
}

.post-content h3 {
    font-size: 1.5rem;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    color: var(--text);
}

.post-content p {
    margin-bottom: var(--space-lg);
    line-height: 1.8;
    color: var(--text);
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.post-content li {
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

.post-content strong {
    color: var(--text);
    font-weight: 600;
}

.code-block {
    background: #1e1e1e;
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
    color: #d4d4d4;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.code-block code {
    font-family: 'Courier New', Courier, monospace;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.results-table thead {
    background: var(--primary);
    color: white;
}

.results-table th,
.results-table td {
    padding: var(--space-md);
    text-align: left;
}

.results-table tbody tr {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.results-table tbody tr:last-child {
    border-bottom: none;
}

.results-table tbody tr:hover {
    background: var(--bg);
}

/* Post Footer */
.post-footer {
    margin-top: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 2px solid var(--bg);
}

.share-buttons {
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--bg);
    border-radius: var(--radius-md);
}

.share-buttons p {
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    margin-right: var(--space-sm);
    margin-bottom: var(--space-sm);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.share-btn.twitter {
    background: #1DA1F2;
}

.share-btn.linkedin {
    background: #0077B5;
}

.author-bio {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--bg);
    border-radius: var(--radius-md);
    align-items: center;
}

.author-img {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.author-info h4 {
    margin-bottom: var(--space-sm);
    color: var(--text);
}

.author-info p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

/* Dark Mode Adjustments for Blog */
[data-theme="dark"] .blog-card {
    background: var(--card-bg);
}

[data-theme="dark"] .code-block {
    background: #0d1117;
}

[data-theme="dark"] .results-table tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .results-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Responsive Design for Blog */
@media (max-width: 768px) {
    .blog-header h1 {
        font-size: 2rem;
    }

    .blog-posts .container {
        grid-template-columns: 1fr;
    }

    .post-header h1 {
        font-size: 1.8rem;
    }

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

    .post-content h2 {
        font-size: 1.6rem;
    }

    .post-content h3 {
        font-size: 1.3rem;
    }

    .author-bio {
        flex-direction: column;
        text-align: center;
    }

    .code-block {
        padding: var(--space-md);
        margin: var(--space-lg) calc(var(--space-md) * -1);
        border-radius: 0;
    }

    .code-block pre {
        font-size: 0.85rem;
    }

    .results-table {
        font-size: 0.85rem;
    }

    .results-table th,
    .results-table td {
        padding: var(--space-sm);
    }
}