/* ============================================================
   PORTFOLIO DESIGN SYSTEM — styles.css
   Complete CSS for a premium, themable portfolio website.
   ============================================================ */

/* ── Google Font ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Smooth Theme Transitions ────────────────────────────────── */
* {
  transition: background-color 0.4s ease,
              color 0.3s ease,
              border-color 0.3s ease,
              box-shadow 0.3s ease;
}

/* ============================================================
   THEME TOKENS
   ============================================================ */

/* ── Dark Theme ──────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg-primary: #0a0f1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1e293b;
  --bg-card: rgba(17, 24, 39, 0.8);
  --bg-card-solid: #111827;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #00d4ff;
  --accent-rgb: 0, 212, 255;
  --accent-hover: #33ddff;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --accent-secondary: #ff6b6b;
  --accent-secondary-rgb: 255, 107, 107;
  --border-color: rgba(148, 163, 184, 0.1);
  --border-hover: rgba(0, 212, 255, 0.4);
  --shadow-color: rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --glass-bg: rgba(17, 24, 39, 0.6);
  --glass-border: rgba(148, 163, 184, 0.08);
  --nav-bg: rgba(10, 15, 26, 0.85);
  --input-bg: rgba(17, 24, 39, 0.8);
  --scrollbar-track: #111827;
  --scrollbar-thumb: #374151;
  --code-bg: #1e293b;
}

/* ── Light Theme ─────────────────────────────────────────────── */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-solid: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #0066cc;
  --accent-rgb: 0, 102, 204;
  --accent-hover: #0077ee;
  --accent-glow: rgba(0, 102, 204, 0.1);
  --accent-secondary: #e84c4c;
  --accent-secondary-rgb: 232, 76, 76;
  --border-color: rgba(148, 163, 184, 0.2);
  --border-hover: rgba(0, 102, 204, 0.4);
  --shadow-color: rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(148, 163, 184, 0.15);
  --nav-bg: rgba(248, 250, 252, 0.85);
  --input-bg: rgba(241, 245, 249, 0.8);
  --scrollbar-track: #e2e8f0;
  --scrollbar-thumb: #94a3b8;
  --code-bg: #f1f5f9;
}

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

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

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(var(--accent-rgb), 0.3);
  color: var(--text-primary);
}

/* ── Custom Scrollbar (Webkit) ───────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 4px;
}

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

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

/* ── Base Element Resets ─────────────────────────────────────── */
a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul,
ol {
  list-style: none;
}

/* ============================================================
   SCROLL PROGRESS BAR
   ============================================================ */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  z-index: 10000;
  width: 0%;
  transition: width 0.1s;
  border-radius: 0 2px 2px 0;
}

/* ============================================================
   CUSTOM CURSOR (Desktop Only)
   ============================================================ */

.custom-cursor {
  pointer-events: none;
  position: fixed;
  z-index: 9999;
  mix-blend-mode: difference;
}

.cursor-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  position: absolute;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s;
}

.cursor-outline {
  width: 36px;
  height: 36px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  position: absolute;
  transform: translate(-50%, -50%);
  transition: all 0.15s ease-out;
  opacity: 0.5;
}

/* ============================================================
   CONTAINER
   ============================================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

nav,
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.8rem 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s;
}

nav.scrolled,
.navbar.scrolled {
  box-shadow: 0 4px 30px var(--shadow-color);
  padding: 0.6rem 0;
}

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

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-logo span {
  color: var(--text-primary);
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  transition: all 0.3s;
  position: relative;
}

.nav-link:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
}

/* ── Theme Toggle ────────────────────────────────────────────── */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all 0.3s;
}

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

/* ── Hamburger Menu ──────────────────────────────────────────── */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
  flex-direction: column;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s;
  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(5px, -5px);
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  text-align: center;
  z-index: 1;
  max-width: 800px;
  position: relative;
}

/* ── Profile Image ───────────────────────────────────────────── */
.profile-image-container {
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out;
}

.profile-image {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.3);
  object-fit: cover;
  margin: 0 auto;
  transition: all 0.3s;
}

.profile-image:hover {
  transform: scale(1.05);
  box-shadow: 0 0 60px rgba(var(--accent-rgb), 0.5);
}

/* ── Hero Text ───────────────────────────────────────────────── */
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
  font-weight: 400;
}

/* ── Typing Animation ────────────────────────────────────────── */
.typing-container {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.typing-prefix {
  color: var(--text-secondary);
}

.typing-text {
  color: var(--accent);
  font-weight: 600;
}

.cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}

/* ── Hero Buttons ────────────────────────────────────────────── */
.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

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

.btn {
  padding: 0.8rem 1.8rem;
  border: none;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent);
  color: #0a0f1a;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(var(--accent-rgb), 0.4);
}

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

.btn-secondary:hover {
  background: var(--accent);
  color: #0a0f1a;
  transform: translateY(-3px);
}

.btn-icon {
  background: var(--accent-glow);
  border: 1px solid var(--border-color);
  color: var(--accent);
  width: 44px;
  height: 44px;
  padding: 0;
  justify-content: center;
  border-radius: 10px;
}

.btn-icon:hover {
  background: var(--accent);
  color: #0a0f1a;
  transform: translateY(-3px);
}

/* ── Ripple Effect ───────────────────────────────────────────── */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* ============================================================
   SECTIONS (Generic)
   ============================================================ */

section {
  padding: 6rem 2rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  text-align: center;
  margin-bottom: 4rem;
  color: var(--text-primary);
  font-weight: 700;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  margin: 1rem auto 0;
  border-radius: 2px;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  align-items: start;
}

.about-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-text p {
  margin-bottom: 1.2rem;
}

/* ── Social Links ────────────────────────────────────────────── */
.social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all 0.3s;
  text-decoration: none;
}

.social-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-3px);
}

/* ── Stats Grid ──────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  padding: 2rem 1.5rem;
  border-radius: 16px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 15px 40px var(--shadow-color);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.3rem;
  display: block;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ============================================================
   TIMELINE (Experience / Education)
   ============================================================ */

.timeline {
  position: relative;
  padding-left: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-secondary), transparent);
}

.timeline-item {
  position: relative;
  padding-left: 2.5rem;
  margin-bottom: 2.5rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -0.55rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
  z-index: 1;
}

.timeline-content {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  padding: 1.8rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent);
  transition: all 0.3s;
}

.timeline-content:hover {
  transform: translateX(5px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px var(--shadow-color);
}

.timeline-content h3 {
  color: var(--text-primary);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.timeline-content .duration {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.timeline-content .institution {
  color: var(--text-secondary);
  font-weight: 500;
}

.timeline-content .details {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

.timeline-content ul {
  margin-top: 0.8rem;
  padding-left: 1.2rem;
  color: var(--text-secondary);
  list-style: disc;
}

.timeline-content ul li {
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

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

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.skill-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  padding: 1.8rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 15px 40px var(--shadow-color);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}

.skill-card-header i {
  font-size: 1.3rem;
  color: var(--accent);
  width: 40px;
  height: 40px;
  background: var(--accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-card-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background: var(--accent-glow);
  color: var(--accent);
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  transition: all 0.3s;
}

.skill-tag:hover {
  background: var(--accent);
  color: #0a0f1a;
  transform: scale(1.05);
}

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

/* ── Filter Bar ──────────────────────────────────────────────── */
.projects-filter {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: 25px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s;
  font-family: 'Inter', sans-serif;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  background: var(--accent);
  color: #0a0f1a;
  border-color: var(--accent);
}

/* ── Project Grid ────────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 1;
  transform: scale(1);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px var(--shadow-color);
}

.project-card.hidden {
  opacity: 0;
  transform: scale(0.8);
  position: absolute;
  pointer-events: none;
}

/* ── Project Image ───────────────────────────────────────────── */
.project-image-wrapper {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.project-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .project-image-wrapper img {
  transform: scale(1.06);
}


/* ── Project Header ──────────────────────────────────────────── */
.project-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.project-header h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.project-header .tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-header .tech-stack span,
.tech-badge {
  background: var(--accent-glow);
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* ── Project Body ────────────────────────────────────────────── */
.project-body {
  padding: 1.5rem;
}

.project-body > p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.project-highlights {
  list-style: none;
  padding: 0;
  margin-bottom: 1.5rem;
}

.project-highlights li {
  color: var(--text-secondary);
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.6;
}

.project-highlights li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

/* ============================================================
   ACHIEVEMENTS
   ============================================================ */

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.achievement-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: all 0.3s;
}

.achievement-card:hover {
  transform: translateX(8px);
  background: rgba(var(--accent-rgb), 0.05);
  border-color: var(--accent);
}

.achievement-icon {
  font-size: 1.3rem;
  color: var(--accent);
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.achievement-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

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

/* ============================================================
   RESUME SECTION
   ============================================================ */

.resume-section {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.resume-section > p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.resume-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.resume-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  margin: 0 auto;
  max-width: 700px;
}

.resume-preview iframe {
  width: 100%;
  height: 500px;
  border: none;
}

/* ============================================================
   BLOG
   ============================================================ */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.blog-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.blog-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 15px 40px var(--shadow-color);
}

.blog-image {
  height: 180px;
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.2), rgba(var(--accent-secondary-rgb), 0.2));
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-image i {
  font-size: 3rem;
  color: var(--accent);
}

.blog-content {
  padding: 1.5rem;
}

.blog-content h3 {
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  line-height: 1.4;
}

.blog-content .date {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.8rem;
}

.blog-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.6;
}

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

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.contact-item:hover {
  border-color: var(--accent);
  transform: translateX(5px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--accent-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.2rem;
}

.contact-details h3 {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.contact-details p,
.contact-details a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

/* ── Copy Button ─────────────────────────────────────────────── */
.copy-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.75rem;
  margin-left: auto;
  transition: all 0.3s;
  font-family: 'Inter', sans-serif;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── Contact Form ────────────────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
  padding: 0.9rem 1rem;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.1);
}

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

/* ── Form Status Messages ────────────────────────────────────── */
.form-status {
  text-align: center;
  padding: 0.8rem;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

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

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.footer-text span {
  color: var(--accent);
}

.footer-socials {
  display: flex;
  gap: 0.75rem;
}

/* ============================================================
   BACK TO TOP BUTTON
   ============================================================ */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #0a0f1a;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s;
  z-index: 999;
  box-shadow: 0 4px 15px rgba(var(--accent-rgb), 0.3);
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(var(--accent-rgb), 0.5);
}

/* ============================================================
   TOAST NOTIFICATION
   ============================================================ */

.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card-solid);
  color: var(--text-primary);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 40px var(--shadow-color);
  z-index: 10000;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

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

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

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

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

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

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

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

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

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.4);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(var(--accent-rgb), 0);
  }
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */

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

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

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* ── Tablet & Small Desktop (≤ 992px) ────────────────────────── */
@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

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

  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

/* ── Mobile (≤ 768px) ────────────────────────────────────────── */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
  }

  .nav-links.active {
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    font-size: 1.2rem;
    padding: 0.8rem 1.5rem;
  }

  .hero {
    padding: 5rem 1.5rem 3rem;
  }

  .profile-image {
    width: 150px;
    height: 150px;
  }

  section {
    padding: 4rem 1.5rem;
  }

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

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

  .timeline {
    padding-left: 1.5rem;
  }

  .resume-preview iframe {
    height: 350px;
  }

  .custom-cursor {
    display: none;
  }
}

/* ── Small Mobile (≤ 480px) ──────────────────────────────────── */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .projects-filter {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .contact-item {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */

/* ── Focus-Visible Ring ──────────────────────────────────────── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Skip Navigation Link ────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--accent);
  color: #0a0f1a;
  padding: 0.5rem 1rem;
  border-radius: 0 0 8px 8px;
  z-index: 10001;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}

/* ── Reduced Motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  .reveal-left,
  .reveal-right {
    opacity: 1;
    transform: none;
  }

  .scroll-progress {
    transition: none;
  }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
  nav,
  .navbar,
  .custom-cursor,
  .scroll-progress,
  .back-to-top,
  .hero-particles,
  .toast,
  .hamburger,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  * {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  section {
    page-break-inside: avoid;
  }

  a {
    color: black !important;
    text-decoration: underline;
  }

  .hero {
    min-height: auto;
    padding: 2rem 1rem;
  }

  .project-card,
  .skill-card,
  .achievement-card,
  .stat-card,
  .timeline-content,
  .blog-card,
  .contact-item {
    background: white !important;
    border-color: #ccc !important;
    box-shadow: none !important;
  }
}