/* ==========================================================================
   Design System & Tokens - Medudhula Rohith Kumar Portfolio
   Theme: Cyber-Cloud Distributed Systems & GenAI / Obsidian Dark Mode
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #060810;
  --bg-secondary: #0b0f19;
  --bg-tertiary: #111728;
  --bg-card: rgba(13, 20, 36, 0.7);
  --bg-card-hover: rgba(19, 29, 53, 0.85);
  --bg-glass: rgba(16, 24, 44, 0.55);
  --border-glass: rgba(0, 242, 255, 0.15);
  --border-glass-hover: rgba(0, 242, 255, 0.4);
  --border-subtle: rgba(255, 255, 255, 0.08);

  /* Accents */
  --cyan-primary: #00f2ff;
  --cyan-glow: rgba(0, 242, 255, 0.4);
  --purple-primary: #8b5cf6;
  --purple-glow: rgba(139, 92, 246, 0.4);
  --emerald-primary: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.4);
  --amber-primary: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.4);
  --rose-primary: #f43f5e;

  /* Typography */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #38bdf8;

  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing & Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-cyan: 0 0 25px rgba(0, 242, 255, 0.25);
  --shadow-purple: 0 0 25px rgba(139, 92, 246, 0.25);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  font-size: 16px;
  background-color: var(--bg-primary);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background 3D Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: auto;
  opacity: 0.95;
  transition: opacity 1s ease;
}

/* Foreground Container */
.site-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  overflow-x: hidden;
}

/* Subtle Grid Background Overlay */
.cyber-grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 242, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 242, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 7rem 0;
  position: relative;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

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

a:hover {
  color: #fff;
}

/* Section Header Component */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(0, 242, 255, 0.08);
  border: 1px solid rgba(0, 242, 255, 0.25);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-badge .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-primary);
  animation: pulse-dot 2s infinite;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 20%, var(--cyan-primary) 60%, var(--purple-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
}

.section-header-center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 4rem;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: 1200px;
  z-index: 100;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(6, 8, 16, 0.65);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), var(--shadow-cyan);
  transition: all var(--transition-smooth);
}

.navbar.scrolled {
  top: 0.75rem;
  background: rgba(6, 8, 16, 0.85);
  border-color: rgba(0, 242, 255, 0.3);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 242, 255, 0.2);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan-primary), var(--purple-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #060810;
  font-weight: 900;
  font-family: var(--font-mono);
  font-size: 1rem;
  box-shadow: 0 0 15px var(--cyan-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--cyan-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-primary);
  transition: width var(--transition-smooth);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Sound Toggle Button */
.audio-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.audio-toggle-btn:hover {
  border-color: var(--cyan-primary);
  color: var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-glow);
}

.audio-toggle-btn.active {
  color: var(--cyan-primary);
  border-color: var(--cyan-primary);
  background: rgba(0, 242, 255, 0.1);
}

/* Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: none;
  outline: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-primary), #00a8ff);
  color: #060810;
  box-shadow: 0 4px 20px var(--cyan-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 242, 255, 0.6);
  color: #060810;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cyan-primary);
  color: var(--cyan-primary);
  box-shadow: 0 0 15px rgba(0, 242, 255, 0.2);
  transform: translateY(-2px);
}

.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: rotate(30deg);
  opacity: 0;
  transition: opacity 0.5s;
}

.btn-glow:hover::after {
  opacity: 1;
  animation: shine 1.5s infinite;
}

/* Mobile Nav Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  padding-top: 9rem;
  padding-bottom: 5rem;
  display: flex;
  align-items: center;
  position: relative;
}

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

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-full);
  color: #c084fc;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-headline {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero-headline .gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--cyan-primary) 70%, var(--purple-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--cyan-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-subtitle .cursor-blink {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: var(--cyan-primary);
  animation: blink 1s infinite;
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

/* Metric Counter Strip */
.hero-metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.metric-item {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-subtle);
  padding-right: 1rem;
}

.metric-item:last-child {
  border-right: none;
  padding-right: 0;
}

.metric-val {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff, var(--cyan-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  font-size: 0.775rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.35rem;
  font-weight: 600;
}

/* 3D Visual Hero Card / Interactive Stage Preview */
.hero-visual-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--shadow-cyan);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.hero-visual-card:hover {
  border-color: var(--border-glass-hover);
}

.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.25rem;
}

.window-dots {
  display: flex;
  gap: 0.4rem;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.window-dot.red { background: #ef4444; }
.window-dot.yellow { background: #f59e0b; }
.window-dot.green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.live-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--emerald-primary);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.live-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--emerald-primary);
  box-shadow: 0 0 6px var(--emerald-primary);
}

/* 3D Visual Scene Legend */
.scene-legend {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
}

.legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.legend-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-secondary);
}

.legend-color-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-value {
  color: var(--cyan-primary);
  font-weight: 600;
}

/* ==========================================================================
   Interactive Cloud Architecture Lab Section
   ========================================================================== */
.arch-lab-section {
  background: linear-gradient(180deg, transparent, rgba(11, 15, 25, 0.8) 20%, rgba(11, 15, 25, 0.8) 80%, transparent);
}

.arch-visualizer-container {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md), var(--shadow-cyan);
  position: relative;
  overflow: hidden;
}

.arch-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.arch-scenario-select {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.scenario-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.scenario-btn:hover {
  border-color: var(--cyan-primary);
  color: #fff;
}

.scenario-btn.active {
  background: rgba(0, 242, 255, 0.15);
  border-color: var(--cyan-primary);
  color: var(--cyan-primary);
  box-shadow: 0 0 15px var(--cyan-glow);
}

/* Architecture Flow Nodes */
.arch-flow-diagram {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  position: relative;
  align-items: center;
  margin: 3rem 0;
}

.arch-node {
  background: rgba(17, 23, 40, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
  position: relative;
  transition: all var(--transition-smooth);
  cursor: pointer;
}

.arch-node:hover, .arch-node.active-flow {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 25px var(--cyan-glow);
  transform: translateY(-4px);
}

.arch-node.error-state {
  border-color: var(--rose-primary);
  box-shadow: 0 0 25px rgba(244, 63, 94, 0.4);
}

.node-icon-box {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  border-radius: 12px;
  background: rgba(0, 242, 255, 0.08);
  border: 1px solid rgba(0, 242, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--cyan-primary);
  transition: all var(--transition-fast);
}

.arch-node:hover .node-icon-box {
  background: var(--cyan-primary);
  color: #060810;
  box-shadow: 0 0 18px var(--cyan-primary);
}

.node-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.35rem;
}

.node-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.node-status-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  margin-top: 0.75rem;
  background: rgba(16, 185, 129, 0.1);
  color: var(--emerald-primary);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Connecting Flow Line */
.flow-connector {
  position: absolute;
  top: 50%;
  left: 5%;
  width: 90%;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 0;
  pointer-events: none;
}

.flow-packet {
  position: absolute;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-primary);
  display: none;
}

/* Terminal Console Log in Simulator */
.arch-console-output {
  background: #04060a;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cyan-primary);
  height: 120px;
  overflow-y: auto;
  line-height: 1.6;
}

.console-line {
  margin-bottom: 0.35rem;
  opacity: 0.9;
}

.console-line .timestamp {
  color: var(--text-muted);
}

.console-line.success { color: var(--emerald-primary); }
.console-line.warn { color: var(--amber-primary); }
.console-line.error { color: var(--rose-primary); }

/* ==========================================================================
   Featured Creative Projects Section
   ========================================================================== */
.projects-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.filter-tab {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.filter-tab:hover {
  border-color: rgba(0, 242, 255, 0.3);
  color: #fff;
}

.filter-tab.active {
  background: linear-gradient(135deg, rgba(0, 242, 255, 0.2), rgba(139, 92, 246, 0.2));
  border-color: var(--cyan-primary);
  color: #fff;
  box-shadow: 0 0 20px var(--cyan-glow);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(370px, 1fr));
  gap: 2.25rem;
}

/* 3D Tilt Project Card */
.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color var(--transition-smooth), box-shadow var(--transition-smooth);
  transform-style: preserve-3d;
  perspective: 1000px;
  position: relative;
}

.project-card:hover {
  border-color: var(--border-glass-hover);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 242, 255, 0.2);
}

/* Card Visual Header */
.project-card-visual {
  height: 200px;
  width: 100%;
  position: relative;
  background: #080c18;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card-visual .visual-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  opacity: 0.4;
  filter: blur(25px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.project-card:hover .project-card-visual .visual-bg-glow {
  opacity: 0.7;
  transform: translate(-50%, -50%) scale(1.3);
}

.project-icon-wrapper {
  position: relative;
  z-index: 2;
  width: 68px;
  height: 68px;
  border-radius: 16px;
  background: rgba(13, 20, 36, 0.9);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--cyan-primary);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
  transition: transform var(--transition-smooth);
}

.project-card:hover .project-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
  border-color: var(--cyan-primary);
}

.project-category-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
  background: rgba(6, 8, 16, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--cyan-primary);
}

/* Card Body */
.project-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Metric / Highlight Pill */
.project-highlight {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--emerald-primary);
  margin-bottom: 1.25rem;
}

/* Tech Tags in Card */
.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

/* Card Action Links */
.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.project-link-btn:hover {
  color: var(--cyan-primary);
}

.project-link-btn.primary {
  color: var(--cyan-primary);
}

.project-link-btn.primary:hover {
  color: #fff;
  text-shadow: 0 0 10px var(--cyan-primary);
}

/* ==========================================================================
   Professional Experience Timeline
   ========================================================================== */
.experience-section {
  position: relative;
}

.timeline-container {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding-left: 2.5rem;
}

.timeline-spine {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-primary), var(--purple-primary), rgba(255, 255, 255, 0.1));
}

.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
}

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

.timeline-marker {
  position: absolute;
  left: -2.5rem;
  top: 0.5rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-marker::after {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-primary);
}

.timeline-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-smooth), transform var(--transition-smooth);
}

.timeline-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateX(6px);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.timeline-role-group {
  display: flex;
  flex-direction: column;
}

.timeline-role {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
}

.timeline-company {
  font-size: 1.05rem;
  color: var(--cyan-primary);
  font-weight: 600;
  margin-top: 0.2rem;
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.timeline-location {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.timeline-achievements {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.timeline-achievements li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-achievements li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--cyan-primary);
  font-size: 1.1rem;
}

.timeline-skills-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ==========================================================================
   Skills Matrix & Cloud Architecture Competencies
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.skill-category-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
}

.skill-category-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), var(--shadow-cyan);
}

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

.skill-cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 242, 255, 0.1);
  border: 1px solid rgba(0, 242, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--cyan-primary);
}

.skill-cat-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

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

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

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.skill-name {
  color: var(--text-primary);
  font-weight: 500;
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan-primary);
}

.skill-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--cyan-primary), var(--purple-primary));
  box-shadow: 0 0 10px var(--cyan-glow);
  width: 0%;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Certifications & Education Section
   ========================================================================== */
.credentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.credential-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  transition: all var(--transition-smooth);
}

.credential-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), var(--shadow-cyan);
}

.credential-badge-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255, 153, 0, 0.15), rgba(255, 153, 0, 0.05));
  border: 1px solid rgba(255, 153, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: #ff9900;
  flex-shrink: 0;
}

.credential-badge-icon.azure {
  background: linear-gradient(135deg, rgba(0, 120, 212, 0.15), rgba(0, 120, 212, 0.05));
  border-color: rgba(0, 120, 212, 0.3);
  color: #0078d4;
}

.credential-badge-icon.edu {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(139, 92, 246, 0.05));
  border-color: rgba(139, 92, 246, 0.3);
  color: var(--purple-primary);
}

.credential-content {
  display: flex;
  flex-direction: column;
}

.credential-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.35rem;
}

.credential-issuer {
  font-size: 0.9rem;
  color: var(--cyan-primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

/* ==========================================================================
   Contact & Connect Console Section
   ========================================================================== */
.contact-console-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  box-shadow: var(--shadow-md), var(--shadow-cyan);
}

.contact-info-col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-method-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 242, 255, 0.08);
  border: 1px solid rgba(0, 242, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}

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

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.contact-value {
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
}

.social-links-bar {
  display: flex;
  gap: 1rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.social-btn:hover {
  border-color: var(--cyan-primary);
  color: var(--cyan-primary);
  box-shadow: 0 0 15px var(--cyan-glow);
  transform: translateY(-2px);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  background: rgba(11, 15, 25, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.15rem;
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--cyan-primary);
  box-shadow: 0 0 15px var(--cyan-glow);
}

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

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-subtle);
  background: #04060a;
  position: relative;
  z-index: 2;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-tech {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan-primary);
}

/* ==========================================================================
   Project Detail Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 6, 12, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-lg);
  max-width: 750px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), var(--shadow-cyan);
  padding: 2.5rem;
  position: relative;
  transform: translateY(20px) scale(0.96);
  transition: transform var(--transition-smooth);
}

.modal-overlay.active .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: #fff;
  border-color: var(--cyan-primary);
  box-shadow: 0 0 10px var(--cyan-glow);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .arch-flow-diagram {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .flow-connector {
    display: none;
  }

  .contact-console-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .hero-metrics-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .metric-item:nth-child(2) {
    border-right: none;
  }

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

  .timeline-container {
    padding-left: 1.5rem;
  }

  .timeline-marker {
    left: -1.5rem;
  }
}