/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES
   ========================================================================== */
:root {
    /* Color Palette - Dark Theme (Default) */
    --bg-primary: #0a0b10;
    --bg-secondary: #0f111a;
    --bg-card: rgba(20, 22, 37, 0.6);
    --bg-card-hover: rgba(28, 31, 53, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(99, 102, 241, 0.4);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --color-primary: #6366f1; /* Indigo */
    --color-primary-rgb: 99, 102, 241;
    --color-secondary: #06b6d4; /* Cyan */
    --color-secondary-rgb: 6, 182, 212;
    --color-accent: #d946ef; /* Pink/Purple */
    
    --gradient-1: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-text: linear-gradient(90deg, #818cf8 0%, #22d3ee 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
    
    /* Layout Constants */
    --header-height: 80px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
body.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --border-color: rgba(0, 0, 0, 0.06);
    --border-color-hover: rgba(99, 102, 241, 0.3);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --color-primary: #4f46e5;
    --color-secondary: #0891b2;
    
    --gradient-text: linear-gradient(90deg, #4f46e5 0%, #0891b2 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.1);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

button, input, textarea {
    font-family: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
    border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ==========================================================================
   LAYOUT UTILITIES & BACKGROUNDS
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Grid Background & Glowing Blobs */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: -2;
    opacity: 0.6;
}

.blob-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: -1;
    opacity: 0.15;
    transition: opacity var(--transition-normal);
}
body.light-theme .blob-glow {
    opacity: 0.08;
}
.blob-1 {
    top: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: var(--color-primary);
}
.blob-2 {
    bottom: -10%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: var(--color-secondary);
}

/* Gradient Text Badge */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 20px;
    backdrop-filter: blur(8px);
}
.badge-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981; /* green */
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.5; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-1);
    color: #ffffff;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    backdrop-filter: blur(8px);
}
.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Section Common Styling */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.subtitle-badge {
    font-family: 'Outfit', sans-serif;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.85rem;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}
.section-title {
    font-size: 2.25rem;
    color: var(--text-primary);
}
.underline-gradient {
    width: 60px;
    height: 4px;
    background: var(--gradient-1);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(10, 11, 16, 0.6);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: background-color var(--transition-normal), border var(--transition-normal);
}
body.light-theme header {
    background-color: rgba(248, 250, 252, 0.7);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.nav-menu ul {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
}
.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width var(--transition-fast);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-btn, .mobile-menu-btn {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.theme-btn:hover, .mobile-menu-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    background: var(--bg-card-hover);
}

.mobile-menu-btn {
    display: none;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 40px);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 12px;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.typewriter-text {
    color: var(--color-secondary);
    font-weight: 700;
    border-right: 3px solid var(--color-secondary);
    padding-right: 4px;
    animation: blink 0.75s step-end infinite;
}

@keyframes blink {
    from, to { border-color: transparent }
    50% { border-color: var(--color-secondary); }
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

/* Hero Visual Artifacts */
.hero-visual-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-visual {
    position: relative;
    width: 380px;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-circle {
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border: 1px dashed rgba(99, 102, 241, 0.2);
    animation: rotateCircle 30s linear infinite;
}

@keyframes rotateCircle {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.visual-card {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    border-radius: var(--border-radius-sm);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-md);
    z-index: 5;
    animation: floatCard 6s ease-in-out infinite;
}
.visual-card-1 {
    top: 10%;
    left: -5%;
    animation-delay: 0s;
}
.visual-card-2 {
    bottom: 12%;
    right: -5%;
    animation-delay: 3s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.card-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-1);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}
.card-info {
    display: flex;
    flex-direction: column;
}
.card-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.card-value {
    font-size: 0.85rem;
    font-weight: 700;
}
.status-online {
    color: #10b981;
}

/* Styled Terminal */
.code-terminal {
    width: 100%;
    max-width: 340px;
    background: #0d0e15;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 2;
    transform: perspective(1000px) rotateY(-10deg) rotateX(10deg);
    transition: transform var(--transition-normal);
}
.code-terminal:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.terminal-header {
    background: #141522;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 8px;
}

.terminal-body {
    padding: 16px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    color: #94a3b8;
}

/* Code Highlighting Syntax */
.code-keyword { color: #f43f5e; }
.code-decorator { color: #38bdf8; }
.code-func { color: #fbbf24; }
.code-str { color: #34d399; }
.code-num { color: #c084fc; }

.scroll-down-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 1.25rem;
    color: var(--text-muted);
    z-index: 10;
}
.animated-arrow {
    animation: bounceArrow 2s infinite;
}

@keyframes bounceArrow {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
}

.about-info h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    line-height: 1.3;
}
.about-info p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px;
}
.stat-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px 16px;
    border-radius: var(--border-radius-sm);
    text-align: center;
    backdrop-filter: blur(8px);
}
.stat-number {
    font-family: 'Outfit', sans-serif;
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 4px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-text {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.about-specialties {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.specialty-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    display: flex;
    gap: 20px;
    transition: all var(--transition-fast);
    backdrop-filter: blur(8px);
}
.specialty-card:hover {
    border-color: var(--border-color-hover);
    transform: translateX(6px);
    background: var(--bg-card-hover);
}

.specialty-icon {
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}
.specialty-card:hover .specialty-icon {
    background: var(--gradient-1);
    color: #ffffff;
    border-color: transparent;
}

.specialty-text h4 {
    font-size: 1.1rem;
    margin-bottom: 6px;
}
.specialty-text p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.skills-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 32px;
    backdrop-filter: blur(8px);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}
.category-header i {
    font-size: 1.4rem;
    color: var(--color-secondary);
}
.category-header h3 {
    font-size: 1.35rem;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.skill-name {
    color: var(--text-primary);
}
.skill-percent {
    color: var(--color-secondary);
}

.skill-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 100px;
    overflow: hidden;
}
body.light-theme .skill-bar-bg {
    background: rgba(0, 0, 0, 0.05);
}

.skill-bar-fill {
    height: 100%;
    background: var(--gradient-1);
    border-radius: 100px;
    width: 0; /* Animated dynamically in JS */
    transition: width 1.5s cubic-bezier(0.1, 1, 0.1, 1);
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--gradient-1);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    transition: opacity var(--transition-normal);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    backdrop-filter: blur(8px);
    transition: all var(--transition-fast);
}
.project-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.project-image-wrapper {
    width: 100%;
    height: 180px;
    position: relative;
    overflow: hidden;
}

/* Decorative Project Overlay Gradients */
.project-image-gradient {
    width: 100%;
    height: 100%;
    transition: transform var(--transition-normal);
}
.bg-proj-1 {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4338ca 100%);
}
.bg-proj-2 {
    background: linear-gradient(135deg, #06202a 0%, #083344 40%, #0e7490 100%);
}
.bg-proj-3 {
    background: linear-gradient(135deg, #1c062c 0%, #2e0854 40%, #581c87 100%);
}
.bg-proj-4 {
    background: linear-gradient(135deg, #2b0c16 0%, #4c0519 40%, #881337 100%);
}

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

.project-category-tag {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(10, 11, 16, 0.7);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    backdrop-filter: blur(4px);
}

.project-details {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.project-details h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.3;
}
.project-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}
.project-tech-tags span {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}
body.light-theme .project-tech-tags span {
    background: rgba(0, 0, 0, 0.04);
}

.project-links {
    display: flex;
    gap: 12px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.project-link-btn {
    flex: 1;
    text-align: center;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.project-link-btn:hover {
    border-color: var(--border-color-hover);
    background: rgba(255, 255, 255, 0.02);
}
body.light-theme .project-link-btn:hover {
    background: rgba(0, 0, 0, 0.02);
}

.project-link-btn.primary-link {
    background: var(--gradient-1);
    color: #ffffff;
    border-color: transparent;
}
.project-link-btn.primary-link:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 32px 24px;
    text-align: center;
    backdrop-filter: blur(8px);
    transition: all var(--transition-fast);
}
.service-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 20px;
    transition: all var(--transition-fast);
}
.service-card:hover .service-icon {
    background: var(--gradient-1);
    color: #ffffff;
    border-color: transparent;
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    line-height: 1.3;
}
.service-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 48px;
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
}
.contact-info-panel h3 {
    font-size: 1.75rem;
    margin-bottom: 16px;
}
.contact-info-panel p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 16px;
}
.contact-detail-icon {
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--color-secondary);
}

.contact-detail-text {
    display: flex;
    flex-direction: column;
}
.contact-detail-text span:first-child {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.contact-detail-text a, .contact-detail-text span:last-child {
    font-size: 0.95rem;
    font-weight: 600;
}
.contact-detail-text a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: 12px;
}
.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.social-links a:hover {
    background: var(--gradient-1);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-2px);
}

/* Contact Form Card */
.contact-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 40px;
    backdrop-filter: blur(8px);
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    position: relative;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input, .form-group textarea {
    width: 100%;
    background: rgba(10, 11, 16, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}
body.light-theme .form-group input, body.light-theme .form-group textarea {
    background: rgba(255, 255, 255, 0.8);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

.form-group.invalid input, .form-group.invalid textarea {
    border-color: #ef4444;
}

.error-msg {
    color: #ef4444;
    font-size: 0.75rem;
    margin-top: 4px;
    display: none;
}
.form-group.invalid .error-msg {
    display: block;
}

/* Notification Popups inside Form */
.form-notification {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 20px;
    animation: slideUp 0.3s ease;
}

.success-notification {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #34d399;
}
.error-notification {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #f87171;
}

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

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.footer-brand {
    text-align: center;
}
.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 12px;
}

.footer-links ul {
    display: flex;
    justify-content: center;
    gap: 28px;
    flex-wrap: wrap;
}
.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.footer-links a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.back-to-top-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.back-to-top-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

/* ==========================================================================
   SCROLL REVEAL & TRANSITIONS
   ========================================================================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.scroll-reveal.reveal-active {
    opacity: 1;
    transform: translateY(0);
}

/* Fade In animations for Hero */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInAnimation 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

@keyframes fadeInAnimation {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVE)
   ========================================================================== */

/* Tablets & Small Desktops */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-visual-wrapper {
        margin-top: 20px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-subtitle {
        font-size: 1.4rem;
    }
    
    /* Navigation Menu Mobile Drawer */
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-primary);
        border-top: 1px solid var(--border-color);
        padding: 40px 24px;
        z-index: 99;
        transition: left var(--transition-normal);
    }
    
    .nav-menu.mobile-active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        gap: 28px;
        align-items: center;
    }
    .nav-link {
        font-size: 1.15rem;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .contact-form-card {
        padding: 24px;
    }
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .hero-visual {
        width: 300px;
        height: 300px;
    }
    .visual-circle {
        width: 260px;
        height: 260px;
    }
    .code-terminal {
        max-width: 280px;
    }
    .visual-card {
        padding: 8px 12px;
    }
    .visual-card-1 {
        left: -15px;
    }
    .visual-card-2 {
        right: -15px;
    }
}