/* ===========================
   CSS VARIABLES & ROOT THEMING
   =========================== */

:root {
    /* Dark Mode Colors (Default) */
    --color-bg-dark: #0f172a;
    --color-bg-secondary-dark: #1e293b;
    --color-bg-tertiary-dark: #334155;
    --color-text-dark: #f1f5f9;
    --color-text-muted-dark: #cbd5e1;
    --color-text-light-dark: #94a3b8;
    --color-border-dark: #334155;
    --color-accent-dark: #60a5fa;
    --color-accent-darker-dark: #3b82f6;

    /* Light Mode Colors */
    --color-bg-light: #ffffff;
    --color-bg-secondary-light: #f8fafc;
    --color-bg-tertiary-light: #f1f5f9;
    --color-text-light: #1e293b;
    --color-text-muted-light: #64748b;
    --color-text-light-light: #94a3b8;
    --color-border-light: #e2e8f0;
    --color-accent-light: #3b82f6;
    --color-accent-dark-light: #1e40af;

    /* Current Theme (Default to Dark) */
    --color-bg: var(--color-bg-dark);
    --color-bg-secondary: var(--color-bg-secondary-dark);
    --color-bg-tertiary: var(--color-bg-tertiary-dark);
    --color-text: var(--color-text-dark);
    --color-text-muted: var(--color-text-muted-dark);
    --color-text-light: var(--color-text-light-dark);
    --color-border: var(--color-border-dark);
    --color-accent: var(--color-accent-dark);
    --color-accent-darker: var(--color-accent-darker-dark);

    /* Additional Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-ai: #8b5cf6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Poppins', 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;
    --spacing-4xl: 6rem;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Shadow */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* Light Mode Theme */
body.light-mode {
    --color-bg: var(--color-bg-light);
    --color-bg-secondary: var(--color-bg-secondary-light);
    --color-bg-tertiary: var(--color-bg-tertiary-light);
    --color-text: var(--color-text-light);
    --color-text-muted: var(--color-text-muted-light);
    --color-text-light: var(--color-text-light-light);
    --color-border: var(--color-border-light);
    --color-accent: var(--color-accent-light);
    --color-accent-darker: var(--color-accent-dark-light);
}

/* ===========================
   GLOBAL STYLES
   =========================== */

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-darker);
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

body.light-mode .navbar {
    background-color: rgba(255, 255, 255, 0.8);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    height: 70px;
}

.navbar-brand {
    font-size: var(--font-size-lg);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.navbar-brand:hover {
    color: var(--color-accent);
}

.brand-text {
    letter-spacing: -0.5px;
}

.brand-accent {
    font-size: var(--font-size-sm);
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background-color: transparent;
    cursor: pointer;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

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

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.sun-icon {
    display: none;
}

body.light-mode .sun-icon {
    display: block;
}

body.light-mode .moon-icon {
    display: none;
}

.moon-icon {
    display: block;
}

/* Buttons */
.button {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.button-primary {
    background: linear-gradient(135deg, var(--color-accent), #2563eb);
    color: white;
    box-shadow: 0 10px 25px rgba(96, 165, 250, 0.3);
}

.button-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-darker), #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(96, 165, 250, 0.5);
}

.button-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.button-secondary:hover {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2), transparent);
    color: white;
    transform: translateY(-2px);
}

.cta-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent), #2563eb);
    color: white;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.cta-button:hover {
    background: linear-gradient(135deg, var(--color-accent-darker), #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(96, 165, 250, 0.4);
}

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

.hero {
    padding: var(--spacing-4xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(30px); }
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero-text {
    max-width: 700px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.hero-bio {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-socials {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-bg-secondary);
    color: var(--color-accent);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    color: white;
    transform: translateY(-4px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* ===========================
   SECTION STYLES
   =========================== */

section {
    padding: var(--spacing-4xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    font-size: clamp(2rem, 4vw, 3rem);
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-ai));
    border-radius: 2px;
}

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

.skills {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 50%, var(--color-bg) 100%);
    transition: background-color var(--transition-base);
    position: relative;
}

.skills::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(96, 165, 250, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.skill-category {
    animation: slideInUp 0.6s ease-out;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.03) 0%, transparent 100%);
    border-left: 4px solid var(--color-accent);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.skill-category:hover {
    transform: translateX(8px);
    box-shadow: 0 10px 30px rgba(96, 165, 250, 0.1);
}

.skill-category-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.skill-tag {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.08), rgba(139, 92, 246, 0.04));
    color: var(--color-text-muted);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    border: 1.5px solid var(--color-accent);
    border-opacity: 0.3;
    transition: all var(--transition-fast);
    cursor: default;
    font-weight: 500;
}

.skill-tag:hover {
    background: linear-gradient(135deg, var(--color-accent), rgba(139, 92, 246, 0.8));
    color: white;
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(96, 165, 250, 0.3);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
}

.project-card {
    position: relative;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(60, 129, 246, 0.03) 100%);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    animation: slideInUp 0.6s ease-out;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-12px);
    box-shadow: 0 25px 50px rgba(96, 165, 250, 0.15);
}

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

.project-header {
    margin-bottom: var(--spacing-lg);
}

.project-badges {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border: 1.5px solid;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.badge-primary {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.15), rgba(96, 165, 250, 0.05));
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.badge-primary:hover {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.25), rgba(96, 165, 250, 0.1));
    transform: translateY(-2px);
}

.badge-secondary {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(139, 92, 246, 0.05));
    color: var(--color-ai);
    border-color: var(--color-ai);
}

.badge-secondary:hover {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.25), rgba(139, 92, 246, 0.1));
    transform: translateY(-2px);
}

.project-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.project-description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    font-size: var(--font-size-base);
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.stack-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    color: var(--color-accent);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.project-highlight {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-style: italic;
    border-left: 3px solid var(--color-accent);
    padding-left: var(--spacing-lg);
}

/* Project Visibility */
.project-hidden {
    display: none !important;
}

.project-visible {
    display: block;
}

.projects-footer {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(96, 165, 250, 0.2);
    width: 100%;
}

.btn-show-more {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), transparent);
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    padding: var(--spacing-lg) var(--spacing-3xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    min-width: 250px;
    text-align: center;
}

.btn-show-more::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.2), transparent);
    left: -100%;
    transition: left var(--transition-base);
}

.btn-show-more:hover {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2), rgba(96, 165, 250, 0.05));
    border-color: var(--color-accent-darker);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(96, 165, 250, 0.2);
}

.btn-show-more:hover::before {
    left: 100%;
}

/* ===========================
   EXPERIENCE SECTION
   =========================== */

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
}

.experience-card {
    position: relative;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(60, 129, 246, 0.05) 100%);
    border: 2px solid transparent;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl) var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
    animation: slideInUp 0.6s ease-out;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.experience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.experience-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-2xl);
    padding: 2px;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.5), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.experience-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(96, 165, 250, 0.2);
    border-color: var(--color-accent);
}

.experience-card:hover::before,
.experience-card:hover::after {
    opacity: 1;
}

.experience-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-lg);
    display: inline-block;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.experience-card:hover .experience-icon {
    transform: scale(1.1) rotate(5deg);
}

.experience-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.experience-text {
    color: var(--color-text-muted);
    line-height: 1.8;
    font-size: var(--font-size-sm);
}

/* ===========================
   OPEN SOURCE SECTION
   =========================== */

.opensource {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 40%, var(--color-bg) 100%);
}

.opensource-card {
    max-width: 600px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(96, 165, 250, 0.05) 100%);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    text-align: center;
    transition: all var(--transition-base);
    animation: slideInUp 0.6s ease-out;
}

.opensource-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(96, 165, 250, 0.1);
}

.opensource-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.opensource-title {
    font-size: var(--font-size-3xl);
    margin: 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.opensource-description {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-base);
}

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

.contact {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(96, 165, 250, 0.05) 50%, var(--color-bg) 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -40%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float 8s ease-in-out infinite;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: 5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.contact-content {
    position: relative;
    z-index: 10;
}

.contact-title {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    margin-bottom: var(--spacing-md);
    text-align: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-ai));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.contact-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-3xl);
    line-height: 1.8;
    text-align: center;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: stretch;
}

/* Form Box */
.form-box {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(96, 165, 250, 0.05) 100%);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    backdrop-filter: blur(10px);
    animation: slideInUp 0.7s ease-out;
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.form-box:hover {
    border-color: rgba(96, 165, 250, 0.4);
    box-shadow: 0 20px 60px rgba(96, 165, 250, 0.1);
}

.contact-form {
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.form-group {
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.form-control {
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 41, 59, 0.6));
    border: 1.5px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    outline: none;
}

.form-control::placeholder {
    color: var(--color-text-light);
}

.form-control:focus {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.8));
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.15), 0 10px 25px rgba(96, 165, 250, 0.1);
}

.form-control:focus + .form-label-text {
    opacity: 1;
    transform: translateY(-20px) scale(0.85);
}

.form-control:not(:placeholder-shown) + .form-label-text {
    opacity: 1;
    transform: translateY(-20px) scale(0.85);
}

textarea.form-control {
    resize: vertical;
    min-height: 140px;
    font-family: var(--font-primary);
}

.form-label-text {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
    pointer-events: none;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(0);
    transform-origin: left center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), #2563eb);
    color: white;
    border: none;
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: auto;
    width: 100%;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    left: -100%;
    transition: left var(--transition-base);
}

.btn-text {
    position: relative;
    z-index: 2;
}

.btn-icon {
    position: relative;
    z-index: 2;
    transition: transform var(--transition-base);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 50px rgba(96, 165, 250, 0.4);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover .btn-icon {
    transform: translateX(4px);
}

.form-message {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    text-align: center;
    min-height: 20px;
    animation: fadeIn 0.3s ease-out;
}

.form-message.success {
    color: var(--color-success);
}

.form-message.error {
    color: var(--color-error);
}

/* Contact Info */
.contact-info-box {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(96, 165, 250, 0.05) 100%);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    backdrop-filter: blur(10px);
    animation: slideInUp 0.8s ease-out 0.1s backwards;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: all var(--transition-base);
}

.contact-info-box:hover {
    border-color: rgba(96, 165, 250, 0.4);
    box-shadow: 0 20px 60px rgba(96, 165, 250, 0.1);
}

.info-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-2xl);
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    flex: 1;
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(96, 165, 250, 0.02));
    border: 1.5px solid rgba(96, 165, 250, 0.25);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    text-decoration: none;
    color: var(--color-text);
}

.info-item:not(.no-link):hover {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2), rgba(96, 165, 250, 0.08));
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(96, 165, 250, 0.15);
}

.info-icon {
    font-size: 1.75rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2), rgba(139, 92, 246, 0.1));
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.info-item:hover .info-icon {
    background: linear-gradient(135deg, var(--color-accent), rgba(139, 92, 246, 0.4));
}

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

.info-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.info-value {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
}

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

.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

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

/* ===========================
   ANIMATIONS
   =========================== */

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    section {
        padding: var(--spacing-3xl) 0;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --spacing-4xl: 3rem;
        --spacing-3xl: 2rem;
    }

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

    section {
        padding: var(--spacing-3xl) 0;
    }

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

    .form-box {
        padding: var(--spacing-2xl);
    }

    .contact-info-box {
        padding: var(--spacing-2xl);
    }

    .btn-show-more {
        padding: var(--spacing-md) var(--spacing-2xl);
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-2xl: 1.25rem;
        --spacing-2xl: 1.5rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .button {
        width: 100%;
    }

    .project-card,
    .experience-card {
        padding: var(--spacing-xl);
    }

    .form-box,
    .contact-info-box {
        padding: var(--spacing-xl);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}