/* ==========================================================================
   Aditya Gopal Nandardhane - Clean, Professional & Animated Stylesheet
   Zero Clutter, High-End Engineering Aesthetic, Dark/Light Themes
   ========================================================================== */

:root {
  /* Dark Mode (Default) */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-tertiary: #162036;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 32, 54, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.03);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(56, 189, 248, 0.35);
  --border-subtle: rgba(255, 255, 255, 0.04);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #38bdf8;       /* Clean Sky Blue */
  --accent-secondary: #6366f1;     /* Indigo */
  --accent-tertiary: #a855f7;      /* Purple */
  --accent-emerald: #10b981;       /* Mint Emerald */
  --accent-amber: #f59e0b;         /* Warm Amber */
  
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #a855f7 100%);
  --accent-glow: rgba(56, 189, 248, 0.15);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', Menlo, Consolas, monospace;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 35px rgba(56, 189, 248, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  
  --container-max: 1180px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(248, 250, 252, 0.98);
  --bg-glass: rgba(0, 0, 0, 0.02);
  
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(2, 132, 199, 0.35);
  --border-subtle: rgba(0, 0, 0, 0.04);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-primary: #0284c7;
  --accent-secondary: #4f46e5;
  --accent-tertiary: #9333ea;
  --accent-glow: rgba(2, 132, 199, 0.1);
  
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 30px rgba(2, 132, 199, 0.1);
}

/* ==========================================================================
   Base & Resets
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Ambient Background Glow */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.14;
  animation: floatOrb 20s ease-in-out infinite alternate;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: #38bdf8;
  top: -120px;
  left: -80px;
}

.orb-2 {
  width: 450px;
  height: 450px;
  background: #6366f1;
  top: 35%;
  right: -100px;
  animation-duration: 24s;
  animation-delay: -6s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: #a855f7;
  bottom: -60px;
  left: 25%;
  animation-duration: 28s;
  animation-delay: -12s;
}

[data-theme="light"] .orb {
  opacity: 0.08;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, 40px) scale(1.05); }
  100% { transform: translate(-30px, 70px) scale(0.95); }
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ==========================================================================
   Typography Utilities
   ========================================================================== */

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-bottom: 0.85rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.88);
}

.header.scrolled {
  background: rgba(9, 13, 22, 0.95);
  box-shadow: var(--shadow-md);
}

[data-theme="light"] .header.scrolled {
  background: rgba(255, 255, 255, 0.96);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.35);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.3rem 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(--accent-gradient);
  transition: width var(--transition-normal);
  border-radius: 2px;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.theme-toggle-btn .sun-icon { display: none; }
.theme-toggle-btn .moon-icon { display: block; }
[data-theme="light"] .theme-toggle-btn .sun-icon { display: block; }
[data-theme="light"] .theme-toggle-btn .moon-icon { display: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

.btn-emerald {
  background: #10b981;
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.25);
}

.btn-emerald:hover {
  background: #059669;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.45rem 0.95rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.mobile-toggle {
  display: none;
  background: transparent;
  color: var(--text-primary);
  padding: 0.4rem;
}

/* ==========================================================================
   Hero Section with Profile Portrait
   ========================================================================== */

.hero {
  padding: 130px 0 70px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #10b981;
  font-size: 0.82rem;
  font-weight: 600;
  width: fit-content;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.hero-title {
  font-size: clamp(2.3rem, 4.2vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-role-wrapper {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.typewriter-text {
  color: var(--accent-primary);
  border-right: 2px solid var(--accent-primary);
  animation: blink 0.8s step-end infinite;
}

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

.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.copy-btn {
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

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

/* ==========================================================================
   Hero Visual / Profile Portrait Card
   ========================================================================== */

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.profile-card-wrapper {
  position: relative;
  width: 100%;
  max-width: 380px;
}

.profile-image-container {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  aspect-ratio: 4 / 5;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.profile-image-container:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  display: block;
}

/* Floating Badges on Profile Photo */
.floating-chip {
  position: absolute;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 2;
  transition: transform var(--transition-fast);
}

[data-theme="light"] .floating-chip {
  background: rgba(255, 255, 255, 0.9);
}

.floating-chip:hover {
  transform: scale(1.04);
}

.chip-top {
  top: 18px;
  right: -15px;
  animation: floatChip 5s ease-in-out infinite alternate;
}

.chip-bottom {
  bottom: 20px;
  left: -20px;
  animation: floatChip 6s ease-in-out infinite alternate-reverse;
  padding: 0.75rem 1.15rem;
}

@keyframes floatChip {
  0% { transform: translateY(0); }
  100% { transform: translateY(-6px); }
}

.chip-icon-box {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
}

/* ==========================================================================
   Metrics Section
   ========================================================================== */

.metrics-section {
  padding: 2.25rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.35);
}

[data-theme="light"] .metrics-section {
  background: rgba(241, 245, 249, 0.6);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.metric-card {
  text-align: center;
  padding: 1rem;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-normal);
}

.metric-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-3px);
  background: var(--bg-tertiary);
}

.metric-number {
  font-size: clamp(2rem, 3.2vw, 2.7rem);
  font-weight: 900;
  font-family: var(--font-mono);
  margin-bottom: 0.2rem;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ==========================================================================
   What I Deliver Section
   ========================================================================== */

section {
  padding: 80px 0;
  position: relative;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.85rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  transition: all var(--transition-normal);
  position: relative;
}

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

.service-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  transition: transform var(--transition-normal);
}

.service-card:hover .service-icon-box {
  transform: scale(1.08);
  color: var(--accent-emerald);
}

.service-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.service-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.service-benefit {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ==========================================================================
   Experience Timeline Section
   ========================================================================== */

.timeline {
  position: relative;
  max-width: 950px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 2.75rem;
}

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

.timeline-marker {
  position: absolute;
  left: 9px;
  top: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.35);
  z-index: 2;
  transition: transform var(--transition-normal);
}

.timeline-item:hover .timeline-marker {
  transform: scale(1.2);
  border-color: var(--accent-emerald);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.timeline-role {
  font-size: 1.25rem;
  font-weight: 800;
}

.timeline-company {
  font-size: 0.98rem;
  color: var(--accent-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.timeline-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.timeline-points {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  list-style: none;
}

.timeline-points li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-points li svg {
  flex-shrink: 0;
  margin-top: 0.25rem;
  color: var(--accent-emerald);
}

.timeline-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.2rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border-color);
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--accent-primary);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.25rem;
}

.filter-btn {
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.25);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  transition: all var(--transition-normal);
}

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

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  margin-bottom: 0.75rem;
}

.project-category {
  color: var(--accent-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-badge-metric {
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10b981;
  font-weight: 700;
  font-size: 0.74rem;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.project-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.project-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.2rem;
}

.project-bullets li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
}

.project-bullets li svg {
  flex-shrink: 0;
  margin-top: 0.25rem;
  color: var(--accent-primary);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: #ffffff !important;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.project-link-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.45);
}

.project-link-btn.secondary-link {
  background: var(--bg-tertiary);
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color);
  box-shadow: none;
}

.project-link-btn.secondary-link:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary) !important;
  background: var(--bg-card-hover);
}

/* ==========================================================================
   Skills Section
   ========================================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.skill-category-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all var(--transition-normal);
}

.skill-category-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.skill-cat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
}

.skill-cat-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-chip {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.skill-chip:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ==========================================================================
   Education
   ========================================================================== */

.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 850px;
  margin: 0 auto;
}

.edu-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.edu-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 700;
}

.edu-degree {
  font-size: 1.15rem;
  font-weight: 800;
}

.edu-school {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.edu-period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Contact CTA Section
   ========================================================================== */

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  max-width: 850px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.contact-title {
  font-size: clamp(1.8rem, 3.2vw, 2.3rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.contact-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 2rem;
}

.contact-channels {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.contact-item {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.3rem;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.contact-item:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

.email-copy-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.75rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #10b981;
  color: #ffffff;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transform: translateY(80px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 2000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

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

/* Footer */
.footer {
  padding: 2.25rem 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-text {
  font-size: 0.86rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-primary);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .profile-card-wrapper {
    max-width: 320px;
    margin: 0 auto;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.25rem;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    border-bottom: 1px solid var(--border-color);
  }
  .nav-menu.open {
    transform: translateX(0);
  }
  .mobile-toggle {
    display: block;
  }
  .timeline::before {
    left: 14px;
  }
  .timeline-marker {
    left: 3px;
  }
  .timeline-item {
    padding-left: 42px;
  }
  .chip-top {
    right: 0;
  }
  .chip-bottom {
    left: 0;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .contact-channels {
    flex-direction: column;
  }
  .contact-item {
    width: 100%;
    justify-content: center;
  }
}