/* ============================================
   Modern Portfolio Website - CSS
   ============================================ */

/* CSS Variables - PanterSoft Corporate Design */
:root {
    /* PanterSoft Neon Colors */
    --neon-cyan: #00E5FF;
    --neon-green: #39FF14;
    --neon-purple: #BC13FE;

    /* Primary Colors (using Neon Cyan as main) */
    --primary: #00E5FF;
    --primary-dark: #00B8CC;
    --primary-light: #33EBFF;

    /* Secondary Accents */
    --accent-green: #39FF14;
    --accent-purple: #BC13FE;

    /* PanterSoft Background Colors */
    --bg-dark: #050A14; /* Deep Circuit Black */
    --bg-darker: #03060A;
    --bg-light: #0A1128; /* Dark Tech Blue */
    --bg-secondary: #0F1A35;

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    --border-color: rgba(0, 229, 255, 0.2);

    /* Neon Glow Effects */
    --glow-cyan: 0 0 20px rgba(0, 229, 255, 0.5), 0 0 40px rgba(0, 229, 255, 0.3);
    --glow-green: 0 0 20px rgba(57, 255, 20, 0.5), 0 0 40px rgba(57, 255, 20, 0.3);
    --glow-purple: 0 0 20px rgba(188, 19, 254, 0.5), 0 0 40px rgba(188, 19, 254, 0.3);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;

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

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.4);

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

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

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

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 20% 50%, rgba(0, 229, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(57, 255, 20, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(188, 19, 254, 0.02) 0%, transparent 50%);
    background-attachment: fixed;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--neon-cyan);
    border-radius: var(--radius-full);
    box-shadow: var(--glow-cyan);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
    box-shadow: var(--glow-cyan);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

.highlight {
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
}

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

/* Section Styles */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

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

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: var(--radius-full);
    color: var(--neon-cyan);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--glow-cyan);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--neon-cyan);
    color: var(--bg-dark);
    border-color: var(--neon-cyan);
    font-weight: 700;
    box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
    background: var(--neon-green);
    border-color: var(--neon-green);
    color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: var(--glow-green);
}

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

.btn-secondary:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    transform: translateY(-2px);
    box-shadow: var(--glow-cyan);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
    transition: transform var(--transition-base);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
    box-shadow: var(--glow-cyan);
}

.nav-link.active {
    color: var(--neon-cyan);
}

.nav-link.active::after {
    width: 100%;
    box-shadow: var(--glow-cyan);
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    margin-left: var(--spacing-md);
}

.lang-btn {
    background: rgba(0, 229, 255, 0.1);
    border: 2px solid rgba(0, 229, 255, 0.3);
    border-radius: var(--radius-md);
    color: var(--neon-cyan);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-btn:hover {
    background: rgba(0, 229, 255, 0.2);
    border-color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

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

#currentLang {
    display: block;
    user-select: none;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(0, 229, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(57, 255, 20, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(188, 19, 254, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    overflow: hidden;
}

.particles {
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 0;
}

.particles canvas {
    filter: drop-shadow(0 0 2px rgba(0, 229, 255, 0.5));
}

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

.hero-text {
    animation: fadeInUp 0.8s ease;
}

.hero-greeting {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.hero-name {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.name-first {
    color: var(--neon-cyan);
    text-shadow:
        0 0 10px rgba(0, 229, 255, 0.8),
        0 0 20px rgba(0, 229, 255, 0.6),
        0 0 30px rgba(0, 229, 255, 0.4);
}

.hero-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.title-rotate {
    color: var(--neon-cyan);
    font-weight: 700;
    text-shadow:
        0 0 10px rgba(0, 229, 255, 0.6),
        0 0 20px rgba(0, 229, 255, 0.4);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

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

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

.social-icon {
    width: 24px;
    height: 24px;
    opacity: 0.9;
    transition: all var(--transition-base);
    display: block;
    object-fit: contain;
}

.social-icon:hover {
    opacity: 1;
    transform: translateY(-2px);
    filter: drop-shadow(0 0 8px var(--neon-cyan));
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-img {
    width: 100%;
    height: auto;
    display: block;
    max-width: 500px;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--neon-cyan);
    border-radius: var(--radius-full);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
    box-shadow: var(--glow-cyan);
}

@keyframes scroll {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(10px); opacity: 0.5; }
}

/* About Section */
.about {
    background: var(--bg-light);
    background-image:
        radial-gradient(circle at 10% 30%, rgba(0, 229, 255, 0.02) 0%, transparent 40%),
        radial-gradient(circle at 90% 70%, rgba(57, 255, 20, 0.02) 0%, transparent 40%);
    background-attachment: fixed;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-frame {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--glow-cyan);
    border: 2px solid var(--neon-cyan);
    padding: 4px;
    background: var(--bg-dark);
}

.image-frame::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--neon-cyan), var(--neon-green), var(--neon-purple), var(--neon-cyan));
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.5;
    animation: borderGlow 3s ease infinite;
}

@keyframes borderGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.about-img {
    width: 100%;
    height: auto;
    display: block;
    max-width: 400px;
}

.about-text {
    animation: fadeInUp 0.8s ease;
}

.about-intro {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

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

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--neon-cyan);
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.skill-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.skill-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg), var(--glow-cyan);
    border-color: var(--neon-cyan);
}

.skill-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: rgba(0, 229, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 229, 255, 0.3);
    box-shadow: var(--glow-cyan);
    transition: all var(--transition-base);
}

.skill-card:hover .skill-icon {
    box-shadow:
        0 0 20px rgba(0, 229, 255, 0.6),
        0 0 40px rgba(0, 229, 255, 0.4);
    border-color: var(--neon-cyan);
}

.icon-img {
    width: 50px;
    height: 50px;
    filter: brightness(0) invert(1);
}

.skill-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.skill-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

.skills-progress {
    margin-top: var(--spacing-3xl);
}

.progress-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.progress-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.progress-item {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.progress-label {
    font-weight: 600;
    color: var(--text-primary);
}

.progress-percent {
    color: var(--neon-cyan);
    font-weight: 700;
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
}

.progress-bar {
    height: 8px;
    background: var(--bg-darker);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-green), var(--neon-purple));
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1s ease;
    box-shadow:
        0 0 10px rgba(0, 229, 255, 0.6),
        0 0 20px rgba(0, 229, 255, 0.4);
    position: relative;
    box-sizing: border-box;
    max-width: 100%;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Portfolio Section */
.portfolio {
    background: var(--bg-dark);
    background-image:
        radial-gradient(circle at 20% 50%, rgba(188, 19, 254, 0.02) 0%, transparent 40%),
        radial-gradient(circle at 80% 30%, rgba(0, 229, 255, 0.02) 0%, transparent 40%);
    background-attachment: fixed;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/3;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-xl);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

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

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

.portfolio-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.portfolio-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.portfolio-link {
    color: var(--neon-cyan);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
}

.portfolio-link:hover {
    color: var(--neon-green);
    text-shadow: 0 0 12px rgba(57, 255, 20, 0.8);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    animation: fadeInLeft 0.8s ease;
}

.contact-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.contact-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.contact-icon {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.contact-text h4 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.contact-text p,
.contact-text a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-text a:hover {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
}

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

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.social-link img {
    width: 24px;
    height: 24px;
    opacity: 0.8;
    display: block;
    object-fit: contain;
}

.social-link:hover {
    border-color: var(--neon-cyan);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--glow-cyan);
}

.social-link:hover img {
    opacity: 1;
    filter: drop-shadow(0 0 8px var(--neon-cyan));
}

.contact-form {
    animation: fadeInRight 0.8s ease;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow:
        0 0 0 3px rgba(0, 229, 255, 0.1),
        var(--glow-cyan);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Form Messages */
.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

.form-message-success {
    background: rgba(57, 255, 20, 0.1);
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    box-shadow: var(--glow-green);
}

.form-message-error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid #ff4444;
    color: #ff4444;
    box-shadow: 0 0 10px rgba(255, 68, 68, 0.3);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Disabled button state */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Footer */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 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 fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */

/* Tablet and smaller desktop (1024px and below) */
@media (max-width: 1024px) {
    .hero-content {
        gap: var(--spacing-2xl);
    }

    .about-content {
        gap: var(--spacing-2xl);
    }

    .contact-content {
        gap: var(--spacing-2xl);
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

/* Tablet (768px - 968px) */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .hero-image {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-image {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }

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

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

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }
}

/* Mobile and small tablets (768px and below) */
@media (max-width: 768px) {
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .language-switcher {
        margin-left: auto;
        margin-right: var(--spacing-sm);
        z-index: 1001;
    }

    .lang-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        min-width: 45px;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-darker);
        flex-direction: column;
        padding: var(--spacing-xl);
        transition: left var(--transition-base);
        border-top: 1px solid var(--border-color);
        z-index: 1000;
        gap: var(--spacing-md);
        justify-content: flex-start;
        align-items: flex-start;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.25rem;
        padding: var(--spacing-sm) 0;
        width: 100%;
        text-align: left;
    }

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

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        min-height: auto;
        padding-top: 70px;
        padding-bottom: var(--spacing-2xl);
    }

    .hero-content {
        padding: var(--spacing-md);
        gap: var(--spacing-lg);
    }

    .hero-name {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }

    .hero-title {
        font-size: clamp(1.25rem, 5vw, 2rem);
    }

    .hero-description {
        font-size: 1rem;
        line-height: 1.6;
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }

    .btn {
        width: 100%;
        text-align: center;
        padding: 1rem 2rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .section-header {
        margin-bottom: var(--spacing-xl);
    }

    .section-title {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }

    .about-intro {
        font-size: clamp(1.25rem, 4vw, 1.75rem);
    }

    .about-description {
        font-size: 1rem;
    }

    .skill-card {
        padding: var(--spacing-lg);
    }

    .contact-form {
        margin-top: var(--spacing-lg);
    }

    .progress-grid {
        gap: var(--spacing-md);
    }

    .logo-img {
        height: 35px;
    }
}

/* Small mobile devices (480px and below) */
@media (max-width: 480px) {
    section {
        padding: var(--spacing-2xl) 0;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .nav-container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .nav-menu {
        top: 60px;
        height: calc(100vh - 60px);
        padding: var(--spacing-lg);
    }

    .hero {
        padding-top: 60px;
        padding-bottom: var(--spacing-xl);
    }

    .hero-content {
        padding: var(--spacing-sm);
    }

    .hero-greeting {
        font-size: 1rem;
    }

    .hero-name {
        font-size: clamp(2rem, 12vw, 3.5rem);
        margin-bottom: var(--spacing-sm);
    }

    .hero-title {
        font-size: clamp(1.1rem, 5vw, 1.75rem);
        margin-bottom: var(--spacing-sm);
    }

    .hero-description {
        font-size: 0.9rem;
        margin-bottom: var(--spacing-lg);
    }

    .hero-buttons {
        margin-bottom: var(--spacing-lg);
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }

    .section-tag {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .section-title {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }

    .about-intro {
        font-size: clamp(1.1rem, 5vw, 1.5rem);
        line-height: 1.5;
    }

    .about-description {
        font-size: 0.9rem;
    }

    .stat-item {
        padding: var(--spacing-sm);
    }

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

    .stat-label {
        font-size: 0.75rem;
    }

    .skill-card {
        padding: var(--spacing-md);
    }

    .skill-title {
        font-size: 1.25rem;
    }

    .skill-description {
        font-size: 0.9rem;
    }

    .progress-title {
        font-size: 1.5rem;
    }

    .contact-title {
        font-size: 1.5rem;
    }

    .contact-description {
        font-size: 0.9rem;
    }

    .form-group input,
    .form-group textarea {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }

    .lang-btn {
        padding: 0.35rem 0.7rem;
        font-size: 0.75rem;
        min-width: 40px;
    }

    .logo-img {
        height: 30px;
    }

    .hero-image {
        max-width: 100%;
    }

    .about-image {
        max-width: 100%;
    }

    .image-frame {
        padding: 2px;
    }

    .about-img,
    .hero-img {
        max-width: 100%;
    }
}

/* Extra small devices (360px and below) */
@media (max-width: 360px) {
    .hero-name {
        font-size: clamp(1.75rem, 15vw, 3rem);
    }

    .section-title {
        font-size: clamp(1.25rem, 8vw, 1.75rem);
    }

    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.85rem;
    }
}

/* Landscape orientation for mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }

    .hero-content {
        gap: var(--spacing-md);
    }

    .nav-menu {
        height: calc(100vh - 60px);
        overflow-y: auto;
    }
}