/* ========================================
   DESIGN SYSTEM - AI ENGINEER PORTFOLIO
   Dark Neon Theme with Glassmorphism
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - Black & White Theme */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #141414;

    /* Monochrome Colors */
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #ffffff 0%, #a3a3a3 100%);
    --gradient-secondary: linear-gradient(135deg, #f5f5f5 0%, #737373 100%);
    --gradient-accent: linear-gradient(90deg, #ffffff 0%, #d4d4d4 100%);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #d4d4d4;
    --text-muted: #737373;

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px 0 rgba(255, 255, 255, 0.05);

    /* 3D Depth */
    --shadow-3d-sm: 0 4px 8px rgba(0, 0, 0, 0.5), 0 8px 16px rgba(0, 0, 0, 0.3);
    --shadow-3d-md: 0 8px 16px rgba(0, 0, 0, 0.6), 0 16px 32px rgba(0, 0, 0, 0.4);
    --shadow-3d-lg: 0 16px 32px rgba(0, 0, 0, 0.7), 0 32px 64px rgba(0, 0, 0, 0.5);
    --shadow-3d-xl: 0 24px 48px rgba(0, 0, 0, 0.8), 0 48px 96px rgba(0, 0, 0, 0.6);

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

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* ========================================
   ANIMATED BACKGROUND
   ======================================== */

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -3;
    pointer-events: none;
}

.bg-gradient {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.04) 0%, transparent 50%);
    z-index: -2;
    pointer-events: none;
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(5%, 5%) rotate(120deg);
    }

    66% {
        transform: translate(-5%, 5%) rotate(240deg);
    }
}

#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--neon-cyan);
    font-weight: 600;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.btn-primary {
    background: linear-gradient(135deg, #ffffff 0%, #d4d4d4 100%);
    color: #000000;
    box-shadow: var(--shadow-3d-md);
    transform: translateZ(0);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), transparent);
    transform: translateZ(1px);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn-primary:hover {
    transform: translateY(-8px) translateZ(20px) rotateX(5deg);
    box-shadow: var(--shadow-3d-xl);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(-4px) translateZ(10px);
    box-shadow: var(--shadow-3d-md);
}

.btn-secondary {
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-3d-sm);
}

.btn-secondary:hover {
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px) translateZ(20px) rotateX(5deg);
    box-shadow: var(--shadow-3d-lg);
}

.btn-secondary:active {
    transform: translateY(-4px) translateZ(10px);
    box-shadow: var(--shadow-3d-sm);
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    background: rgba(5, 5, 16, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(5, 5, 16, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.logo-text {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text .dot {
    color: var(--white);
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    position: relative;
    transform-style: preserve-3d;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

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

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

.nav-cta {
    padding: 0.625rem 1.5rem;
    font-size: 0.9rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

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

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

@keyframes pulse {

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

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: var(--spacing-lg);
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

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

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

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 500px;
    perspective: 1500px;
    transform-style: preserve-3d;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-3d-lg);
    transition: all var(--transition-slow);
    cursor: pointer;
    transform-style: preserve-3d;
}

.floating-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    border-radius: var(--radius-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
    transform: translateZ(10px);
}

.floating-card:hover::before {
    opacity: 1;
}

.floating-card:hover {
    transform: translateY(-20px) translateZ(50px) rotateX(15deg) rotateY(10deg) scale(1.1);
    box-shadow: var(--shadow-3d-xl);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    transform: translateZ(20px);
    display: block;
}

.floating-card p {
    font-weight: 600;
    color: var(--text-primary);
    transform: translateZ(15px);
}

.card-1 {
    top: 10%;
    left: 10%;
    animation: float3d 6s ease-in-out infinite;
    transform: rotateX(10deg) rotateY(-10deg);
}

.card-2 {
    top: 15%;
    right: 15%;
    animation: float3d 7s ease-in-out infinite 1s;
    transform: rotateX(-10deg) rotateY(10deg);
}

.card-3 {
    bottom: 30%;
    left: 5%;
    animation: float3d 8s ease-in-out infinite 2s;
    transform: rotateX(5deg) rotateY(15deg);
}

.card-4 {
    bottom: 15%;
    right: 10%;
    animation: float3d 6.5s ease-in-out infinite 1.5s;
    transform: rotateX(-5deg) rotateY(-15deg);
}

@keyframes float3d {

    0%,
    100% {
        transform: translateY(0px) translateZ(0px) rotateX(0deg) rotateY(0deg);
    }

    25% {
        transform: translateY(-15px) translateZ(30px) rotateX(10deg) rotateY(5deg);
    }

    50% {
        transform: translateY(-30px) translateZ(50px) rotateX(15deg) rotateY(10deg);
    }

    75% {
        transform: translateY(-15px) translateZ(30px) rotateX(10deg) rotateY(5deg);
    }
}

/* ========================================
   SECTION HEADERS
   ======================================== */

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

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--white);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-3d-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   ABOUT SECTION
   ======================================== */

.about {
    padding: var(--spacing-xl) 0;
}

.about-intro {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.about-focus,
.about-experience {
    margin-bottom: var(--spacing-lg);
}

.about-focus h3,
.about-experience h3 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.focus-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    transition: all var(--transition-slow);
    transform-style: preserve-3d;
    perspective: 1000px;
    box-shadow: var(--shadow-3d-sm);
}

.focus-item:hover {
    transform: translateY(-10px) translateZ(30px) rotateX(5deg);
    border-color: var(--white);
    box-shadow: var(--shadow-3d-lg);
}

.focus-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.focus-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.focus-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.experience-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    backdrop-filter: blur(10px);
}

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

.exp-header h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.exp-company {
    color: var(--white);
    font-weight: 600;
}

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

.about-cta {
    margin-top: var(--spacing-lg);
}

/* ========================================
   PROJECTS SECTION
   ======================================== */

.projects {
    padding: var(--spacing-xl) 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(20px);
    transition: all var(--transition-slow);
    cursor: pointer;
    transform-style: preserve-3d;
    perspective: 1000px;
    box-shadow: var(--shadow-3d-md);
}

.project-card:hover {
    transform: translateY(-20px) translateZ(40px) rotateX(8deg) rotateY(-5deg);
    border-color: var(--white);
    box-shadow: var(--shadow-3d-xl);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(163, 163, 163, 0.1) 100%);
    position: relative;
    overflow: hidden;
    transform: translateZ(10px);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
    transform: translateZ(20px);
}

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

.project-tags {
    display: flex;
    gap: var(--spacing-xs);
}

.tag {
    padding: 0.375rem 0.875rem;
    background: var(--glass-bg);
    border: 1px solid var(--white);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--white);
    font-weight: 600;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-3d-sm);
}

.project-content {
    padding: 2rem;
    transform-style: preserve-3d;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    transform: translateZ(15px);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    transform: translateZ(12px);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
    transform: translateZ(10px);
}

.tech-badge {
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--white);
    font-weight: 500;
}

.project-metrics {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.metric {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

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

.project-link {
    color: var(--neon-cyan);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.project-link:hover {
    color: var(--neon-purple);
    transform: translateX(5px);
}

/* ========================================
   SKILLS SECTION
   ======================================== */

.skills {
    padding: var(--spacing-xl) 0;
}

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

.skill-category {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    transition: all var(--transition-slow);
    transform-style: preserve-3d;
    perspective: 1000px;
    box-shadow: var(--shadow-3d-md);
}

.skill-category:hover {
    transform: translateY(-10px) translateZ(30px) rotateX(5deg);
    border-color: var(--white);
    box-shadow: var(--shadow-3d-lg);
}

.category-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.skill-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s ease;
    position: relative;
    overflow: hidden;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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%);
    }
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact {
    padding: var(--spacing-xl) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

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

.contact-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    backdrop-filter: blur(20px);
    transition: all var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-10px) translateZ(30px) rotateX(5deg);
    border-color: var(--white);
    box-shadow: var(--shadow-3d-lg);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
}

.contact-form-wrapper {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    backdrop-filter: blur(20px);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 0.875rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

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

/* ========================================
   FOOTER
   ======================================== */

.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--glass-border);
    margin-top: var(--spacing-xl);
}

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

.footer-tagline {
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.footer-right p {
    color: var(--text-muted);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-visual {
        height: 400px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.25rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

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

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

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

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

    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .section-title {
        font-size: 1.875rem;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}