/* ==========================================================================
   SONU MANDAL - MERN STACK & BACKEND DEVELOPER PORTFOLIO
   Design System: Obsidian Glassmorphism, Neon Cyan & Emerald Gradients
   Typography: Outfit & Inter & JetBrains Mono
   ========================================================================== */

:root {
  /* Core Backgrounds */
  --bg-deep: #070a12;
  --bg-dark: #0c111d;
  --bg-surface: #111827;
  --bg-surface-elevated: #161f33;
  --bg-glass: rgba(17, 24, 39, 0.72);
  --bg-glass-subtle: rgba(255, 255, 255, 0.03);

  /* Brand Accents & Gradients */
  --primary: #06b6d4;          /* Cyan 500 */
  --primary-glow: rgba(6, 182, 212, 0.35);
  --secondary: #10b981;        /* Emerald 500 */
  --secondary-glow: rgba(16, 185, 129, 0.3);
  --accent-purple: #8b5cf6;    /* Violet 500 */
  --accent-blue: #3b82f6;

  --gradient-brand: linear-gradient(135deg, #06b6d4 0%, #10b981 50%, #6366f1 100%);
  --gradient-glow: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(16, 185, 129, 0.1));
  --gradient-card: linear-gradient(180deg, rgba(22, 31, 51, 0.8) 0%, rgba(14, 20, 35, 0.9) 100%);

  /* Text & Typography */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-glow: #e0f2fe;

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-highlight: rgba(6, 182, 212, 0.3);
  --border-emerald: rgba(16, 185, 129, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px -5px rgba(6, 182, 212, 0.25);
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.4);

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================================================
   Base Reset & Typography
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

p {
  color: var(--text-muted);
}

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

a:hover {
  color: #38bdf8;
}

ul {
  list-style: none;
}

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

code, pre {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 5px;
  border: 2px solid var(--bg-deep);
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Selection */
::selection {
  background: rgba(6, 182, 212, 0.3);
  color: #fff;
}

/* Ambient Background Canvas Orbs */
.ambient-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
}

.glow-orb-1 {
  top: -10%;
  left: -5%;
  width: 600px;
  height: 600px;
  background: #06b6d4;
  animation: floatOrb 22s infinite alternate ease-in-out;
}

.glow-orb-2 {
  top: 40%;
  right: -10%;
  width: 650px;
  height: 650px;
  background: #10b981;
  animation: floatOrb 26s infinite alternate-reverse ease-in-out;
}

.glow-orb-3 {
  bottom: -15%;
  left: 20%;
  width: 700px;
  height: 700px;
  background: #6366f1;
  animation: floatOrb 30s infinite alternate ease-in-out;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.08); }
  100% { transform: translate(-40px, 80px) scale(0.92); }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(7, 10, 18, 0.75);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(7, 10, 18, 0.92);
  border-bottom-color: rgba(6, 182, 212, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  gap: 1.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-tag {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 800;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  white-space: nowrap;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.4rem 0;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  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: 1rem;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Status Dot Pulse */
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  line-height: 1.2;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #070a12;
  font-weight: 700;
  box-shadow: 0 4px 20px -2px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
  color: #070a12;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
  border-color: var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  color: #38bdf8;
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.btn-secondary:hover {
  background: rgba(16, 185, 129, 0.25);
  border-color: #34d399;
  color: #6ee7b7;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.84rem;
  border-radius: var(--radius-sm);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.12);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.25);
}

/* ==========================================================================
   Section Common Styles
   ========================================================================== */

section {
  padding: 6.5rem 0;
  position: relative;
  z-index: 2;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 4rem auto;
}

.section-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.85rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding-top: calc(var(--header-height) + 3.5rem);
  padding-bottom: 5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

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

.hero-badge-wrap {
  margin-bottom: 1.5rem;
}

.availability-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: #34d399;
}

.hero-name {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.75rem;
  letter-spacing: -0.03em;
}

.hero-role-wrap {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.typing-text {
  color: #38bdf8;
  border-right: 2px solid #38bdf8;
  white-space: nowrap;
  animation: blinkCursor 0.8s infinite;
}

@keyframes blinkCursor {
  0%, 100% { border-color: transparent; }
  50% { border-color: #38bdf8; }
}

.hero-summary {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-social-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.social-icon-btn:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--primary);
  color: var(--text-main);
  transform: translateY(-2px);
}

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

.avatar-card-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-image-container {
  position: relative;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(6, 182, 212, 0.45);
  background: radial-gradient(circle at center, #1e293b 0%, #090e18 100%);
  box-shadow: 0 0 45px rgba(6, 182, 212, 0.35), inset 0 0 25px rgba(6, 182, 212, 0.2);
  transition: all var(--transition-normal);
}

.avatar-image-container:hover {
  transform: scale(1.03);
  border-color: #38bdf8;
  box-shadow: 0 0 65px rgba(6, 182, 212, 0.5);
}

.avatar-image-container img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.avatar-overlay-glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 110%, rgba(6, 182, 212, 0.25) 0%, transparent 60%);
  pointer-events: none;
}

/* Floating Tech Pills on Hero Visual */
.floating-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  background: rgba(17, 24, 39, 0.9);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  animation: floatChip 6s ease-in-out infinite;
  z-index: 5;
}

.chip-node {
  top: 4%;
  left: -2%;
  border-color: rgba(16, 185, 129, 0.35);
  animation-delay: 0s;
}

.chip-mern {
  bottom: 4%;
  left: 2%;
  border-color: rgba(6, 182, 212, 0.35);
  animation-delay: 1.5s;
}

.chip-jwt {
  top: 30%;
  right: -5%;
  border-color: rgba(139, 92, 246, 0.35);
  animation-delay: 3s;
}

@keyframes floatChip {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Hero Stats Strip */
.stats-strip {
  margin-top: 4rem;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.35rem;
}

.stat-number {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ==========================================================================
   Terminal / Code Showcase Widget
   ========================================================================== */

.terminal-card {
  background: #090d16;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  margin-top: 3.5rem;
}

.terminal-header {
  background: #0d131f;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dots {
  display: flex;
  gap: 0.45rem;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #eab308; }
.dot-green { background: #22c55e; }

.terminal-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.terminal-actions {
  display: flex;
  gap: 0.5rem;
}

.terminal-tab-btn {
  background: transparent;
  border: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.terminal-tab-btn.active,
.terminal-tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #38bdf8;
}

.terminal-body {
  padding: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  line-height: 1.6;
  max-height: 380px;
  overflow-y: auto;
}

.terminal-command {
  color: #a78bfa;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.terminal-prompt {
  color: #10b981;
}

.code-json {
  color: #94a3b8;
}

.json-key { color: #38bdf8; }
.json-string { color: #86efac; }
.json-number { color: #f59e0b; }
.json-boolean { color: #c084fc; }

/* ==========================================================================
   About Section & Architectural Pillars
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-narrative {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-highlight-box {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  margin-top: 0.5rem;
}

.about-highlight-box p {
  color: var(--text-main);
  font-size: 0.95rem;
  line-height: 1.6;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.pillar-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

.pillar-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: 0 10px 30px -5px rgba(6, 182, 212, 0.15);
}

.pillar-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.pillar-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.pillar-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

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

.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.skill-category-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, 0.25);
  box-shadow: var(--shadow-card);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.category-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--primary);
}

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

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skill-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.skill-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 500;
}

.skill-name {
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.skill-pct {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.progress-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--gradient-brand);
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Experience & Education Timeline
   ========================================================================== */

.timeline-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.timeline-column-title {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.timeline-stream {
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.timeline-item {
  position: relative;
}

.timeline-node {
  position: absolute;
  left: -2.6rem;
  top: 0.25rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

.timeline-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  border-color: var(--border-highlight);
  transform: translateX(4px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.timeline-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: #38bdf8;
  background: rgba(6, 182, 212, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.timeline-company {
  font-size: 0.95rem;
  font-weight: 600;
  color: #10b981;
  margin-bottom: 1rem;
}

.timeline-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.timeline-bullet-item {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.timeline-bullet-item::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.timeline-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  color: var(--text-muted);
}

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

.filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--gradient-brand);
  color: #070a12;
  border-color: transparent;
  font-weight: 700;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.25rem;
}

.project-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.35);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(6, 182, 212, 0.15);
}

.project-thumbnail {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #080d17;
}

.project-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-thumbnail img {
  transform: scale(1.05);
}

.project-badges {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: flex;
  gap: 0.5rem;
  z-index: 2;
}

.project-live-indicator {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(7, 10, 18, 0.8);
  backdrop-filter: blur(8px);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: #34d399;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.project-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.project-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.project-highlights-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.project-highlight-item {
  font-size: 0.82rem;
  color: var(--text-dim);
  padding-left: 1rem;
  position: relative;
  line-height: 1.45;
}

.project-highlight-item::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #10b981;
  font-weight: bold;
}

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: auto;
  margin-bottom: 1.5rem;
}

.tech-chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.18);
  border-radius: 4px;
  color: #38bdf8;
}

.project-footer-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

/* ==========================================================================
   REST API Playground & Tester
   ========================================================================== */

.api-tester-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-card);
}

.tester-controls-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: center;
}

.method-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-sm);
  background: #0284c7;
  color: white;
}

.endpoint-select {
  flex-grow: 1;
  background: #090d16;
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
}

.endpoint-select:focus {
  border-color: var(--primary);
}

.tester-status-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding: 0.5rem 1rem;
  background: #090d16;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.status-code-pill {
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 700;
}

.status-code-pill.success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

.response-json-box {
  background: #070a12;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: #94a3b8;
  max-height: 340px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ==========================================================================
   Contact Section & Form
   ========================================================================== */

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.contact-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

.contact-card-left {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.contact-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.25rem;
}

.contact-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 0.15rem;
}

.copy-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(6, 182, 212, 0.15);
  color: #38bdf8;
  border-color: var(--primary);
}

/* Contact Form */
.contact-form-container {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  background: #090e18;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.25);
  background: #0d1424;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 300px;
  max-width: 420px;
  background: #0f172a;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-normal);
}

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

.toast-success {
  border-left: 4px solid #10b981;
}

.toast-error {
  border-left: 4px solid #ef4444;
}

.toast-icon {
  font-size: 1.25rem;
}

.toast-text {
  font-size: 0.88rem;
  color: var(--text-main);
}

/* ==========================================================================
   Modals
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 750px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  transform: scale(0.95);
  transition: transform var(--transition-bounce);
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1);
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.35rem;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 2rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: #05080e;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem 0;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-bio {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  max-width: 380px;
  line-height: 1.6;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

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

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-summary {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group,
  .hero-social-links,
  .hero-role-wrap {
    justify-content: center;
  }

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

  .about-grid,
  .timeline-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

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

@media (max-width: 992px) {
  :root {
    --header-height: 70px;
  }

  .mobile-toggle {
    display: block;
  }


  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(7, 10, 18, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .hero-name {
    font-size: 2.5rem;
  }

  .hero-role-wrap {
    font-size: 1.25rem;
  }

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

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

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

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