/* ============================================================
   DanielRaj Portfolio — Design System
   ============================================================ */

/* ---------- Reset ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ---------- CSS Variables — Dark Theme (default) ---------- */
:root {
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-tertiary: #1d3461;
    --primary-color: #64ffda;
    --primary-color-rgb: 100, 255, 218;
    --secondary-color: #4dd0b8;
    --accent-color: #7efce0;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --text-heading: #e6f1ff;
    --card-bg: rgba(17, 34, 64, 0.6);
    --card-border: rgba(100, 255, 218, 0.1);
    --nav-bg: rgba(10, 25, 47, 0.85);
    --shadow-glow: 0 0 30px rgba(100, 255, 218, 0.15);
    --shadow-card: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
    --gradient-primary: linear-gradient(135deg, #64ffda 0%, #4dd0b8 100%);
    --gradient-hero: radial-gradient(ellipse at 30% 50%, rgba(100, 255, 218, 0.08) 0%, transparent 60%);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

/* ---------- Light Theme ---------- */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --primary-color: #0d9373;
    --primary-color-rgb: 13, 147, 115;
    --secondary-color: #0b7a62;
    --accent-color: #10b981;
    --text-primary: #334155;
    --text-secondary: #64748b;
    --text-heading: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-border: rgba(13, 147, 115, 0.15);
    --nav-bg: rgba(248, 250, 252, 0.9);
    --shadow-glow: 0 0 30px rgba(13, 147, 115, 0.1);
    --shadow-card: 0 10px 30px -15px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #0d9373 0%, #10b981 100%);
    --gradient-hero: radial-gradient(ellipse at 30% 50%, rgba(13, 147, 115, 0.06) 0%, transparent 60%);
}

/* ---------- Base ---------- */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

body.menu-open {
    overflow: hidden;
}

::selection {
    background: rgba(var(--primary-color-rgb), 0.25);
    color: var(--text-heading);
}

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

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

/* ---------- Skip to Content ---------- */
.skip-to-content {
    position: fixed;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--bg-primary);
    padding: 12px 24px;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    font-weight: 600;
    z-index: 9999;
    transition: top 0.3s;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.skip-to-content:focus {
    top: 0;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

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

/* ---------- Cursor Glow ---------- */
.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--primary-color-rgb), 0.07) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

/* ============================================================
   Navigation
   ============================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.5);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-heading);
    letter-spacing: -0.5px;
}

.logo .accent {
    color: var(--primary-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.nav-menu a .nav-number {
    color: var(--primary-color);
    font-size: 0.75rem;
    margin-right: 4px;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.08);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 2px solid var(--card-border);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: rotate(30deg);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    z-index: 1001;
}

.hamburger span {
    width: 28px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    border-radius: 2px;
}

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

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

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

/* ============================================================
   Social Sidebar
   ============================================================ */
.social-sidebar {
    position: fixed;
    bottom: 0;
    left: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    z-index: 100;
}

.social-sidebar a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-sidebar a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.social-sidebar::after {
    content: '';
    display: block;
    width: 1px;
    height: 90px;
    background: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Email Sidebar */
.email-sidebar {
    position: fixed;
    bottom: 0;
    right: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    z-index: 100;
}

.email-sidebar a {
    writing-mode: vertical-rl;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 2px;
    transition: var(--transition);
}

.email-sidebar a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.email-sidebar::after {
    content: '';
    display: block;
    width: 1px;
    height: 90px;
    background: var(--text-secondary);
    margin-top: 0.5rem;
}

/* ============================================================
   Sections Common
   ============================================================ */
section {
    position: relative;
    z-index: 2;
    padding: 120px 2rem;
}

.section-container {
    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3.5rem;
    white-space: nowrap;
}

.section-number {
    font-family: var(--font-mono);
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 400;
}

.section-header h2 {
    font-size: 2.2rem;
    color: var(--text-heading);
    font-weight: 700;
}

.section-header::after {
    content: '';
    display: block;
    height: 1px;
    width: 100%;
    max-width: 300px;
    background: var(--bg-tertiary);
}

/* ============================================================
   Hero Section
   ============================================================ */
.home {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    background: var(--gradient-hero);
}

.home-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    width: 100%;
    padding: 0 2rem;
}

.home-content {
    z-index: 2;
}

.home-greeting {
    font-family: var(--font-mono);
    color: var(--primary-color);
    font-size: 1rem;
    margin-bottom: 1.2rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.2s;
}

.home-name {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--text-heading);
    line-height: 1.1;
    margin-bottom: 0.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.4s;
}

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

.home-tagline {
    font-size: clamp(1.4rem, 3vw, 2.4rem);
    font-weight: 700;
    color: var(--text-secondary);
    line-height: 1.3;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.6s;
}

.typing-wrapper {
    display: inline-flex;
    align-items: center;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.7s;
}

.typing-label {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-right: 0.5rem;
}

.typing {
    font-family: var(--font-mono);
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 500;
    border-right: 2px solid var(--primary-color);
    padding-right: 4px;
    animation: blink 0.8s step-end infinite;
}

.home-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.8s;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1s;
}

/* Avatar */
.avatar-container {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.5s;
}

.avatar-wrapper {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

#avatar {
    width: 360px;
    height: 360px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 40px rgba(var(--primary-color-rgb), 0.2);
    transition: var(--transition);
    position: relative;
    z-index: 2;
}

#avatar:hover {
    transform: scale(1.03);
    box-shadow: 0 0 60px rgba(var(--primary-color-rgb), 0.35);
}

.avatar-ring {
    position: absolute;
    inset: -15px;
    border-radius: 50%;
    border: 2px dashed rgba(var(--primary-color-rgb), 0.3);
    animation: rotate 20s linear infinite;
    z-index: 1;
}

.avatar-dots {
    position: absolute;
    inset: -30px;
    border-radius: 50%;
    border: 2px dotted rgba(var(--primary-color-rgb), 0.15);
    animation: rotate 30s linear infinite reverse;
    z-index: 0;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    z-index: 2;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-secondary);
    border-radius: 14px;
    position: relative;
    opacity: 0.5;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 3px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.btn.primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn.primary:hover {
    background: rgba(var(--primary-color-rgb), 0.1);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(var(--primary-color-rgb), 0.2);
}

.btn.accent {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border: none;
    font-weight: 700;
}

.btn.accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
}

.btn i {
    font-size: 0.9rem;
}

/* Icon button for project links */
.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 8px 16px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-icon:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.05);
    transform: translateY(-2px);
}

/* ============================================================
   About Section
   ============================================================ */
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1rem;
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-text strong,
.about-text a {
    color: var(--primary-color);
}

/* Tech Philosophy */
.tech-philosophy {
    margin-top: 2rem;
    padding: 1.5rem 1.8rem;
    background: rgba(var(--primary-color-rgb), 0.05);
    border-left: 3px solid var(--primary-color);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-style: italic;
    line-height: 1.8;
    position: relative;
}

.tech-philosophy i {
    color: var(--primary-color);
    opacity: 0.5;
    margin-right: 8px;
    font-size: 0.85rem;
}

.about-photo {
    position: relative;
    max-width: 300px;
    margin: 0 auto;
}

.about-photo-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.about-photo-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    transform: translate(15px, 15px);
    z-index: -1;
    transition: var(--transition);
}

.about-photo:hover .about-photo-wrapper::after {
    transform: translate(10px, 10px);
}

.about-photo img {
    width: 100%;
    border-radius: var(--radius-md);
    filter: grayscale(20%);
    transition: var(--transition);
}

.about-photo:hover img {
    filter: none;
}

.about-photo-overlay {
    position: absolute;
    inset: 0;
    background: rgba(var(--primary-color-rgb), 0.15);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.about-photo:hover .about-photo-overlay {
    background: transparent;
}

/* ============================================================
   Skills Section — Tiered Layout
   ============================================================ */
.skills-tiered {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.skill-tier {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2rem 2.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.skill-tier:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.tier-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tier-badge {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.tier-badge.core {
    background: rgba(var(--primary-color-rgb), 0.15);
    color: var(--primary-color);
    border: 1px solid rgba(var(--primary-color-rgb), 0.3);
}

.tier-badge.comfortable {
    background: rgba(100, 180, 255, 0.1);
    color: #64b4ff;
    border: 1px solid rgba(100, 180, 255, 0.25);
}

.tier-badge.learning {
    background: rgba(255, 200, 100, 0.1);
    color: #ffc864;
    border: 1px solid rgba(255, 200, 100, 0.25);
}

.tier-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
}

.skill-icons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 1.2rem;
}

.skill-icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 1rem 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: default;
}

.skill-icon-item:hover {
    background: rgba(var(--primary-color-rgb), 0.08);
    transform: translateY(-3px);
}

.skill-icon-item i {
    width: 40px;
    height: 40px;
    font-size: 2.2rem;
    transition: var(--transition);
    color: var(--text-secondary);
}

.skill-icon-item:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 0 8px rgba(var(--primary-color-rgb), 0.5));
}

.skill-icon-item span {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    text-align: center;
}

/* ============================================================
   Experience Timeline
   ============================================================ */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.experience-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.experience-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.experience-card:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
    box-shadow: var(--shadow-glow);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
}

.experience-title {
    font-size: 1.2rem;
    color: var(--text-heading);
    font-weight: 600;
}

.experience-title .company {
    color: var(--primary-color);
}

.experience-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.experience-description {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.experience-description li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    display: flex;
    gap: 10px;
    line-height: 1.6;
}

.experience-description li::before {
    content: '▹';
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.experience-description li strong {
    color: var(--text-primary);
}

.experience-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.experience-tech span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    background: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

/* ============================================================
   Projects Section
   ============================================================ */
/* Project Badges */
.project-badge {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(var(--primary-color-rgb), 0.2);
    display: inline-block;
}

.project-badge.featured {
    background: rgba(255, 215, 0, 0.1);
    color: #ffd700;
    border-color: rgba(255, 215, 0, 0.3);
}

.project-badge.highlight {
    background: rgba(255, 140, 50, 0.1);
    color: #ff8c32;
    border-color: rgba(255, 140, 50, 0.3);
}

.featured-badges,
.project-card-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.8rem;
}

/* Project Detail List (Problem/Solution/Result format) */
.project-detail-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.project-detail-list.compact {
    gap: 0.6rem;
    margin-bottom: 1.2rem;
}

.project-detail-item {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
}

.detail-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 70px;
    flex-shrink: 0;
    padding-top: 3px;
}

.project-detail-item p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
    margin: 0;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.project-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-folder {
    color: var(--primary-color);
    font-size: 2.5rem;
}

.project-external-links {
    display: flex;
    gap: 1rem;
}

.project-external-links a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.project-external-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.project-card h3 {
    font-size: 1.3rem;
    color: var(--text-heading);
    margin-bottom: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

.project-card:hover h3 {
    color: var(--primary-color);
}

.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.project-tech-stack span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Featured Project */
.featured-project {
    margin-bottom: 3rem;
}

.featured-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.featured-content:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.featured-info h3 {
    font-size: 1.6rem;
    color: var(--text-heading);
    margin-bottom: 1rem;
}

.featured-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.featured-image {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.featured-image .project-screenshot {
    width: 100%;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    background: linear-gradient(135deg, rgba(var(--primary-color-rgb), 0.1), rgba(var(--primary-color-rgb), 0.03));
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.7;
    transition: var(--transition);
}

.featured-content:hover .project-screenshot {
    opacity: 1;
}

/* ============================================================
   Currently Working On Section
   ============================================================ */
.currently-working {
    padding: 60px 2rem 120px;
}

.currently-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.currently-card {
    display: flex;
    gap: 1.2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    align-items: flex-start;
}

.currently-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.currently-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(var(--primary-color-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.currently-icon i {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.currently-info h4 {
    font-size: 1rem;
    color: var(--text-heading);
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.currently-info p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.6rem;
}

.currently-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.active {
    background: var(--primary-color);
    box-shadow: 0 0 8px rgba(var(--primary-color-rgb), 0.5);
    animation: pulse-dot 2s ease-in-out infinite;
}

.status-dot.learning {
    background: #ffc864;
    box-shadow: 0 0 8px rgba(255, 200, 100, 0.5);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

/* ============================================================
   Education Section
   ============================================================ */
.education-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.education-item {
    display: flex;
    gap: 2rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    align-items: flex-start;
}

.education-item:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
    box-shadow: var(--shadow-glow);
}

.education-icon-box {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: rgba(var(--primary-color-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.education-icon-box i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.education-content h3 {
    font-size: 1.3rem;
    color: var(--text-heading);
    margin-bottom: 0.3rem;
}

.education-content h4 {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.education-content .institution {
    color: var(--text-primary);
    font-style: italic;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.education-content .edu-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.education-content .description {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ============================================================
   Contact Section
   ============================================================ */
.contact {
    text-align: center;
}

.contact .section-header {
    justify-content: center;
}

.contact-hero {
    max-width: 600px;
    margin: 0 auto 3.5rem;
}

.contact-headline {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-intro {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contact-cta {
    font-size: 1.1rem;
    padding: 16px 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto 3.5rem;
}

.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 1.8rem 1.2rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    text-align: center;
}

.contact-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.contact-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--primary-color-rgb), 0.1);
    transition: var(--transition);
}

.contact-card:hover .contact-card-icon {
    background: rgba(var(--primary-color-rgb), 0.2);
    transform: scale(1.1);
}

.contact-card-icon i {
    font-size: 1.3rem;
    color: var(--primary-color);
}

.contact-card h4 {
    font-size: 0.95rem;
    color: var(--text-heading);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-card a,
.contact-card span {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    word-break: break-all;
    transition: var(--transition-fast);
}

.contact-card a:hover {
    color: var(--primary-color);
}

/* Contact Form */
.contact-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

.contact-form {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    text-align: left;
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.contact-form:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.contact-form h3 {
    font-size: 1.3rem;
    color: var(--text-heading);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.contact-form h3 i {
    color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(var(--primary-color-rgb), 0.03);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.12);
    background: rgba(var(--primary-color-rgb), 0.05);
}

.contact-form textarea {
    resize: vertical;
    min-height: 130px;
}

.form-submit {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 1rem;
    margin-top: 0.5rem;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
    position: relative;
    z-index: 2;
    padding: 2.5rem 2rem;
    text-align: center;
    border-top: 1px solid var(--card-border);
}

.footer-content p {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.8;
}

.footer-content a {
    color: var(--primary-color);
}

.version {
    display: inline-block;
    margin-left: 8px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    opacity: 0.6;
    background: rgba(var(--primary-color-rgb), 0.05);
    padding: 2px 8px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
}

.footer-social {
    display: none;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.footer-social a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.contact-card-icon-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.contact-card-icon-link:hover .contact-card-icon {
    background: rgba(var(--primary-color-rgb), 0.2);
    transform: scale(1.1);
}

/* ============================================================
   Toast & Back to Top
   ============================================================ */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 9999;
    font-size: 0.9rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-success {
    border-color: var(--primary-color);
}

.toast-success i {
    color: var(--primary-color);
}

.toast-error {
    border-color: #ff6b6b;
}

.toast-error i {
    color: #ff6b6b;
}

#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    font-size: 1.1rem;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#back-to-top:hover {
    background: var(--primary-color);
    color: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(25px);
    }

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

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-15px);
    }
}

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

    to {
        transform: rotate(360deg);
    }
}

@keyframes blink {
    50% {
        border-right-color: transparent;
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 6px;
    }

    100% {
        opacity: 0;
        top: 22px;
    }
}

/* Reveal Animations */
.reveal-section,
.reveal-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-section.revealed,
.reveal-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

.stagger {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   Responsive Design
   ============================================================ */
@media (max-width: 1080px) {

    .social-sidebar,
    .email-sidebar {
        display: none;
    }

    .footer-social {
        display: flex;
    }
}

@media (max-width: 1024px) {
    .home {
        padding: 100px 1.5rem 2rem;
        min-height: 100vh;
    }

    .home-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
        padding: 0;
    }

    .home-content {
        order: 2;
    }

    .avatar-container {
        order: 1;
    }

    .home-description {
        margin-left: auto;
        margin-right: auto;
        max-width: 500px;
    }

    .cta-buttons {
        justify-content: center;
    }

    .typing-wrapper {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-photo {
        max-width: 260px;
        margin: 0 auto;
    }

    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .featured-image {
        order: -1;
    }

    #avatar {
        width: 260px;
        height: 260px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        height: 100vh;
        flex-direction: column;
        background: var(--bg-primary);
        justify-content: center;
        align-items: center;
        gap: 0.5rem;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu li a {
        font-size: 1.1rem;
        padding: 1rem 2rem;
        display: block;
    }

    .hamburger {
        display: flex;
    }

    section {
        padding: 80px 1.25rem;
    }

    .currently-working {
        padding: 40px 1.25rem 80px;
    }

    .section-header {
        flex-wrap: wrap;
        white-space: normal;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .home {
        padding: 90px 1.25rem 2rem;
    }

    .home-container {
        gap: 2rem;
    }

    .home-name {
        font-size: clamp(2rem, 8vw, 2.8rem);
    }

    .home-tagline {
        font-size: clamp(1.2rem, 4.5vw, 1.8rem);
    }

    .home-description {
        font-size: 0.95rem;
        max-width: 100%;
    }

    .typing-wrapper {
        flex-wrap: wrap;
        justify-content: center;
    }

    .cta-buttons {
        gap: 0.75rem;
        justify-content: center;
    }

    #avatar {
        width: 220px;
        height: 220px;
    }

    .skills-tiered {
        gap: 1.5rem;
    }

    .skill-tier {
        padding: 1.5rem;
    }

    .skill-icons-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    }

    .experience-header {
        flex-direction: column;
        gap: 0.3rem;
    }

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

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

    .education-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    section {
        padding: 70px 1rem;
    }

    .currently-working {
        padding: 30px 1rem 70px;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .home {
        padding: 80px 1rem 2rem;
        align-items: flex-start;
    }

    .home-container {
        gap: 1.5rem;
        padding-top: 1rem;
    }

    #avatar {
        width: 180px;
        height: 180px;
    }

    .home-greeting {
        font-size: 0.9rem;
    }

    .home-name {
        font-size: clamp(1.8rem, 8vw, 2.4rem);
    }

    .home-tagline {
        font-size: clamp(1.1rem, 5vw, 1.5rem);
    }

    .home-description {
        font-size: 0.9rem;
        line-height: 1.7;
        text-align: left;
    }

    .typing {
        font-size: 0.9rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .section-header h2 {
        font-size: 1.3rem;
    }

    .section-number {
        font-size: 0.9rem;
    }

    .about-text p {
        font-size: 0.9rem;
    }

    .skill-icons-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .experience-card {
        padding: 1.5rem;
    }

    .experience-title {
        font-size: 1rem;
    }

    .project-card {
        padding: 1.5rem;
    }

    .featured-project .featured-info h3 {
        font-size: 1.3rem;
    }

    .project-tech-stack span {
        font-size: 0.7rem;
    }

    .contact-headline {
        font-size: 1.6rem;
    }

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

    .contact-form {
        padding: 1.5rem 1.2rem;
    }

    .contact-card {
        padding: 1.2rem;
    }

    .contact-cta {
        font-size: 0.95rem;
        padding: 14px 28px;
    }

    .footer {
        padding: 1.5rem 1rem;
    }

    #back-to-top {
        bottom: 20px;
        right: 16px;
        width: 40px;
        height: 40px;
    }

    .detail-label {
        min-width: 60px;
        font-size: 0.65rem;
    }

    .project-detail-item p {
        font-size: 0.85rem;
    }
}

@media (max-width: 360px) {
    #avatar {
        width: 150px;
        height: 150px;
    }

    .home-name {
        font-size: 1.6rem;
    }

    .home-tagline {
        font-size: 1rem;
    }

    .btn {
        font-size: 0.8rem;
        padding: 12px 20px;
    }

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

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

    .section-header::after {
        display: none;
    }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal-section,
    .reveal-item,
    .stagger {
        opacity: 1;
        transform: none;
    }
}

/* ---------- Focus Visible ---------- */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: 2px;
}