/* ===== CSS Variables ===== */
:root {
    /* Colors - Light Theme */
    --primary-color: #4F46E5;
    --secondary-color: #059669;
    --accent-color: #DC2626;
    --warning-color: #EA580C;
    --info-color: #0891B2;
    --purple-color: #7C3AED;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-overlay: rgba(255, 255, 255, 0.95);
    
    /* Text Colors */
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --text-white: #FFFFFF;
    
    /* Border Colors */
    --border-light: #E2E8F0;
    --border-medium: #CBD5E1;
    --border-dark: #94A3B8;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.3);
    
    /* Typography */
    --font-family: 'Satoshi', -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;
    
    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

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

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

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);
    overflow-x: hidden;
}

/* ===== Loading Screen ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loading-container {
    text-align: center;
    max-width: 400px;
    padding: var(--spacing-xl);
}

.loading-logo {
    margin-bottom: var(--spacing-xl);
}

.loading-logo .brand-text {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.loading-logo .brand-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 500;
}

.loading-spinner {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
}

.spinner-ring:nth-child(1) {
    animation-delay: 0s;
    border-top-color: var(--primary-color);
}

.spinner-ring:nth-child(2) {
    animation-delay: 0.5s;
    border-top-color: var(--secondary-color);
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
}

.spinner-ring:nth-child(3) {
    animation-delay: 1s;
    border-top-color: var(--accent-color);
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
}

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

.loading-message {
    font-size: var(--font-size-lg);
    font-weight: 500;
    display: block;
    margin-bottom: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

.loading-progress {
    width: 200px;
    height: 4px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    margin: 0 auto;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
    width: 0%;
    transition: width 0.3s ease;
    animation: progressGlow 2s ease-in-out infinite;
}

@keyframes progressGlow {
    0%, 100% { box-shadow: 0 0 5px rgba(79, 70, 229, 0.3); }
    50% { box-shadow: 0 0 20px rgba(79, 70, 229, 0.6); }
}

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

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

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

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

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

.nav-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.brand-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.nav-link i {
    font-size: var(--font-size-base);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: 12px;
    position: relative;
    z-index: 1001;
    background: transparent;
    border: none;
    min-width: 48px;
    min-height: 48px;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-normal);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.nav-toggle:hover {
    background-color: rgba(79, 70, 229, 0.1);
}

.nav-toggle:active {
    background-color: rgba(79, 70, 229, 0.2);
}

.nav-toggle .bar {
    width: 24px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
    display: block;
    pointer-events: none;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(5, 150, 105, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge i {
    color: var(--primary-color);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

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

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    position: relative;
    height: 500px;
    animation: fadeInRight 1s ease-out 0.8s both;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-icon {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    animation: float 6s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-icon:nth-child(1) {
    top: 10%;
    left: 20%;
    background: linear-gradient(135deg, #3776ab, #ffd43b);
}

.floating-icon:nth-child(2) {
    top: 20%;
    right: 10%;
    background: linear-gradient(135deg, #f7df1e, #000000);
}

.floating-icon:nth-child(3) {
    top: 50%;
    left: 10%;
    background: linear-gradient(135deg, var(--accent-color), var(--warning-color));
}

.floating-icon:nth-child(4) {
    bottom: 30%;
    right: 20%;
    background: linear-gradient(135deg, #61dafb, #20232a);
}

.floating-icon:nth-child(5) {
    bottom: 10%;
    left: 30%;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
}

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

/* ===== Portfolio Section ===== */
.portfolio-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

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

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

/* ===== Filter Status ===== */
.filter-status {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    opacity: 1;
    transform: translateY(0);
    transition: all var(--transition-normal);
}

.filter-status.updating {
    opacity: 0.5;
    transform: translateY(-10px);
}

.filter-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: var(--shadow-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-icon {
    color: var(--primary-color);
    font-size: var(--font-size-base);
}

.filter-text {
    color: var(--text-primary);
}

.filter-count {
    color: var(--primary-color);
    font-weight: 600;
}

/* ===== Loading Animation ===== */
.loading-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    min-height: 80px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-container.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-light);
    border-top: 4px solid var(--primary-color);
    border-right: 4px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
    position: relative;
}

.spinner::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    border: 2px solid transparent;
    border-top: 2px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1.5s linear infinite reverse;
}

.loading-text {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===== Smooth Scroll Enhancement ===== */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

/* ===== Portfolio Filter Enhancement ===== */
.portfolio-grid {
    transition: all var(--transition-slow);
}

.portfolio-grid.filtering {
    opacity: 0.3;
    pointer-events: none;
}

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

.portfolio-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
    opacity: 1;
    transform: scale(1) translateY(0) rotateX(0);
    transform-origin: center;
}

.portfolio-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(79, 70, 229, 0.2);
    border-color: rgba(79, 70, 229, 0.3);
}

.portfolio-card.hidden {
    opacity: 0;
    transform: scale(0.7) translateY(50px) rotateX(-15deg);
    pointer-events: none;
    transition: all var(--transition-slow);
}

.portfolio-card.show {
    opacity: 1;
    transform: scale(1) translateY(0) rotateX(0);
    transition: all var(--transition-slow);
}

.card-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

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

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-normal);
}

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

.card-image:hover img {
    transform: scale(1.1);
}

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

.card-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.card-time i {
    font-size: var(--font-size-xs);
}

/* ===== Card Actions ===== */
.card-actions {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.btn-details {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    width: 100%;
    justify-content: center;
}

.btn-details:hover {
    background: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-details i {
    font-size: var(--font-size-sm);
}

/* ===== Update Overlay Buttons ===== */
.btn-view,
.btn-demo,
.btn-code {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    min-width: 120px;
    justify-content: center;
}

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

.btn-view:hover {
    background: #3730A3;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-demo {
    background: var(--success-color);
    color: var(--text-white);
}

.btn-demo:hover {
    background: #047857;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-code {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-code:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-content {
    padding: var(--spacing-xl);
}

.card-category {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

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

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

.card-tech {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

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

/* ===== Error Container ===== */
.error-container {
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    text-align: center;
}

.error-message {
    max-width: 400px;
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.error-message i {
    font-size: var(--font-size-4xl);
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
    display: block;
}

.error-message h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.error-message p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.retry-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.retry-btn:hover {
    background: #3730A3;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== No Projects Message ===== */
.no-projects {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    color: var(--text-secondary);
}

.no-projects i {
    font-size: var(--font-size-5xl);
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    display: block;
}

.no-projects h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.no-projects p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-primary);
    color: var(--text-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-brand h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

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

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all var(--transition-normal);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

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

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(100px);
    }
    50% {
        opacity: 1;
        transform: scale(1.05) translateY(-10px);
    }
    70% {
        transform: scale(0.95) translateY(5px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-100px) rotateY(-90deg);
    }
    to {
        opacity: 1;
        transform: translateX(0) rotateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px) rotateY(90deg);
    }
    to {
        opacity: 1;
        transform: translateX(0) rotateY(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.5) rotate(-180deg);
    }
    to {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-visual {
        height: 400px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    /* Ensure nav-toggle is always accessible and visible */
    .nav-toggle {
        display: flex !important;
        z-index: calc(var(--z-fixed) + 2) !important;
        position: relative;
        -webkit-tap-highlight-color: transparent;
        user-select: none;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        background: rgba(255, 255, 255, 0.9);
        border: 1px solid var(--border-light);
        box-shadow: var(--shadow-sm);
        cursor: pointer;
    }
    
    /* Improve touch target size */
    .nav-toggle {
        min-width: 48px;
        min-height: 48px;
        padding: 12px;
    }
    
    /* Ensure bars are visible and properly styled */
    .nav-toggle .bar {
        pointer-events: none;
        width: 24px;
        height: 3px;
        background-color: var(--text-primary);
        border-radius: 2px;
        transition: all var(--transition-normal);
        display: block;
    }
    
    /* Active state animations */
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
        background-color: var(--primary-color);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
        background-color: var(--primary-color);
    }
    
    /* Mobile menu styling - Fixed positioning */
    .nav-menu {
        position: fixed;
        top: 80px; /* Height of navbar */
        left: 0;
        right: 0;
        background: var(--bg-overlay);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-top: 1px solid var(--border-light);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: calc(var(--z-fixed) + 1);
        box-shadow: var(--shadow-lg);
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        width: 100%;
        justify-content: flex-start;
        background: transparent;
        transition: background-color var(--transition-normal);
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        font-size: var(--font-size-base);
        font-weight: 500;
        color: var(--text-secondary);
    }
    
    .nav-link:hover {
        background-color: rgba(79, 70, 229, 0.1);
        color: var(--primary-color);
    }
    
    .nav-link.active {
        background-color: rgba(79, 70, 229, 0.15);
        color: var(--primary-color);
    }
    
    /* Ensure navbar has proper z-index and height */
    .navbar {
        z-index: var(--z-fixed);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 80px;
    }
    
    .nav-container {
        height: 80px;
        align-items: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-stats {
        justify-content: center;
        gap: var(--spacing-xl);
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .loading-container {
        justify-content: center;
        min-height: 80px;
    }
    
    .spinner {
        width: 40px;
        height: 40px;
    }
    
    .filter-info {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-xs);
    }
    
    .filter-text {
        display: none;
    }
    
    .filter-count {
        margin-left: var(--spacing-xs);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    /* Loading Screen Mobile */
    .loading-container {
        padding: var(--spacing-md);
    }
    
    .loading-logo .brand-text {
        font-size: var(--font-size-3xl);
    }
    
    .loading-spinner {
        width: 60px;
        height: 60px;
    }
    
    .loading-progress {
        width: 150px;
    }
}

/* Show toggle on mobile */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex !important;
        background: rgba(255, 255, 255, 0.95) !important;
        border: 2px solid var(--border-light) !important;
        box-shadow: var(--shadow-md) !important;
    }
}