/* ================================================
   Cloud Security Architect Portfolio - Premium CSS
   ================================================ */

/* Design Tokens */
/* ============================================
   DESIGN SYSTEM — STATIC TOKENS (theme-independent)
   ============================================ */
:root {
  --accent-orange: #ff9900;
  --accent-cyan: #00d9ff;
  --accent-orange-dim: rgba(255, 153, 0, 0.10);
  --accent-cyan-dim: rgba(0, 217, 255, 0.10);

  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --transition: 300ms cubic-bezier(0.23, 1, 0.32, 1);
  --transition-slow: 600ms cubic-bezier(0.23, 1, 0.32, 1);

  /* ============ DARK THEME (default) ============ */
  --bg-darker: #050810;
  --bg-dark: #0a0e27;
  --bg-secondary: #0a0e27;
  --bg-card: #111c3f;
  --bg-card-hover: #1a2855;

  --text-primary: #f5f7fa;
  --text-secondary: #b0bcc4;
  --text-tertiary: #7a8a99;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-light: rgba(255, 255, 255, 0.12);

  --navbar-bg: rgba(5, 8, 16, 0.80);
  --navbar-scrolled: rgba(5, 8, 16, 0.95);
  --navbar-mobile: rgba(5, 8, 16, 0.98);

  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --card-shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.4);
}

/* ============================================
   LIGHT THEME
   ============================================ */
[data-theme="light"] {
  --bg-darker: #e2e8f0;
  --bg-dark: #f1f5f9;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;

  --border-color: rgba(15, 23, 42, 0.08);
  --border-color-light: rgba(15, 23, 42, 0.14);

  --navbar-bg: rgba(248, 250, 252, 0.85);
  --navbar-scrolled: rgba(248, 250, 252, 0.97);
  --navbar-mobile: rgba(248, 250, 252, 0.99);

  --card-shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
  --card-shadow-hover: 0 16px 48px rgba(15, 23, 42, 0.12);
  --accent-orange-dim: rgba(255, 153, 0, 0.12);
  --accent-cyan-dim: rgba(0, 217, 255, 0.10);
}

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

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

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, var(--bg-darker) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  padding: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* ================================================
   Background Effects
   ================================================ */
.bg-topology {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.3;
}

.topology-svg {
  width: 100%;
  height: 100%;
}

@keyframes node-pulse {
  0%, 100% { r: 3px; opacity: 0.6; }
  50% { r: 5px; opacity: 0.3; }
}

.node-pulse {
  animation: node-pulse 3s ease-in-out infinite;
}

/* ================================================
   Navigation
   ================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--navbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition);
}

.navbar.scrolled {
  background: var(--navbar-scrolled);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.nav-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.logo-accent {
  color: var(--accent-orange);
  font-size: 1.3rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
  align-items: center;
}

.nav-menu a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition);
  padding: var(--spacing-xs) 0.75rem;
}

.nav-menu a:hover {
  color: var(--accent-orange);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  gap: 6px;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition);
}

@media (max-width: 768px) {
  .nav-wrapper {
    padding: var(--spacing-md);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--navbar-mobile);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateX(-100%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--border-color);
  }

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

  .nav-menu a {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
  }
}

/* ================================================
   Buttons
   ================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-orange);
  color: #fff;
  border-color: var(--accent-orange);
}

.btn-primary:hover {
  background: #ff8800;
  border-color: #ff8800;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 153, 0, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color-light);
}

.btn-secondary:hover {
  background: var(--bg-card);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* ================================================
   Section Header
   ================================================ */
.section-header {
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
  border-radius: 2px;
}

/* ================================================
   Hero Section
   ================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  max-width: 600px;
}

.hero-accent {
  display: inline-block;
  width: fit-content;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--accent-orange-dim);
  color: var(--accent-orange);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid rgba(255, 153, 0, 0.2);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  font-weight: 600;
  line-height: 1.6;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 550px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-wrapper {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
}

.profile-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.15) 0%, transparent 70%);
  filter: blur(40px);
  border-radius: 50%;
  animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.profile-image {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 2px solid var(--border-color-light);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

.profile-image:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 20px 80px rgba(0, 217, 255, 0.15);
}

.profile-icons {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-start;
  z-index: 2;
}

.icon-badge {
  background: rgba(5, 8, 16, 0.9);
  border: 1px solid var(--border-color-light);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: 0.8rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
}

.icon-badge.aws {
  background: rgba(255, 153, 0, 0.15);
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

.icon-badge.terraform {
  background: rgba(156, 39, 176, 0.15);
  border-color: #9c27b0;
  color: #9c27b0;
}

.icon-badge.security {
  background: rgba(0, 217, 255, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .profile-wrapper {
    max-width: 320px;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
  }

  .profile-wrapper {
    max-width: 280px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 80px 0 40px;
  }

  .hero-actions {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .btn {
    width: 100%;
  }
}

/* ================================================
   About Section
   ================================================ */
.about {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, transparent, var(--accent-orange-dim) 50%, transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

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

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.highlight {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  padding: var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.highlight:hover {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  transform: translateX(8px);
}

.highlight-icon {
  color: var(--accent-orange);
  font-weight: 700;
  font-size: 1.5rem;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .about .container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
}

/* ================================================
   Expertise Section
   ================================================ */
.expertise {
  padding: var(--spacing-3xl) 0;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.expertise-card {
  background: var(--bg-card);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.expertise-card:hover {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(255, 153, 0, 0.1);
}

.card-icon {
  font-size: 2rem;
  line-height: 1;
}

.expertise-card h3 {
  font-size: 1rem;
  color: var(--text-primary);
}

.expertise-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--spacing-xs);
}

.card-tags span {
  display: inline-block;
  background: var(--accent-orange-dim);
  color: var(--accent-orange);
  padding: 4px 10px;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(255, 153, 0, 0.2);
}

@media (max-width: 1024px) {
  .expertise-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .expertise-grid {
    grid-template-columns: 1fr;
  }

  .expertise-card {
    padding: var(--spacing-lg);
  }
}

/* ================================================
   Projects Section
   ================================================ */
.projects {
  padding: var(--spacing-3xl) 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.project-card:hover {
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  transform: translateY(-8px);
  box-shadow: 0 24px 48px rgba(0, 217, 255, 0.1);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.project-header h3 {
  font-size: 1rem;
  color: var(--text-primary);
  flex: 1;
}

.project-badge {
  display: inline-block;
  background: var(--accent-orange-dim);
  color: var(--accent-orange);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  border: 1px solid rgba(255, 153, 0, 0.2);
}

.project-badge.featured {
  background: linear-gradient(135deg, var(--accent-orange-dim), var(--accent-cyan-dim));
  color: var(--accent-orange);
  border-color: rgba(255, 153, 0, 0.3);
}

.project-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.project-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tech span {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  padding: 4px 10px;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(0, 217, 255, 0.2);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--accent-cyan);
  font-weight: 600;
  transition: all var(--transition);
  margin-top: auto;
}

.project-link:hover {
  gap: var(--spacing-md);
}

@media (max-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-metrics {
    grid-template-columns: 1fr;
  }
}

/* ================================================
   Metrics Section
   ================================================ */
.metrics {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, transparent, var(--accent-cyan-dim) 50%, transparent);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-xl);
}

.metric-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition);
}

.metric-box:hover {
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.metric-counter {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-orange);
  display: inline-block;
  line-height: 1;
}

.metric-plus {
  font-size: 1.5rem;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-left: -8px;
}

.metric-box p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-md);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .metrics-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metric-counter {
    font-size: 2.5rem;
  }
}

/* ================================================
   Blog & Articles Section
   ================================================ */
.blog {
  padding: var(--spacing-3xl) 0;
}

.blog-platforms {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}

.platforms-label {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  font-weight: 500;
  white-space: nowrap;
}

.platform-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.platform-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-lg);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}

.platform-btn.medium {
  background: rgba(255, 255, 255, 0.05);
  color: #e8e8e8;
  border-color: rgba(255, 255, 255, 0.12);
}
.platform-btn.medium:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  transform: translateY(-2px);
}

.platform-btn.devto {
  background: rgba(8, 56, 88, 0.3);
  color: #a8d8f0;
  border-color: rgba(8, 56, 88, 0.6);
}
.platform-btn.devto:hover {
  background: rgba(8, 56, 88, 0.5);
  color: #c8eafc;
  transform: translateY(-2px);
}

.platform-btn.hashnode {
  background: rgba(36, 102, 255, 0.1);
  color: #7ba7ff;
  border-color: rgba(36, 102, 255, 0.25);
}
.platform-btn.hashnode:hover {
  background: rgba(36, 102, 255, 0.2);
  color: #aac4ff;
  transform: translateY(-2px);
}

.platform-btn.xtwitter {
  background: rgba(255, 255, 255, 0.05);
  color: #d0d0d0;
  border-color: rgba(255, 255, 255, 0.15);
}
.platform-btn.xtwitter:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
}
.platform-btn.linkedin {
  background: rgba(10, 102, 194, 0.1);
  color: #7ab3e0;
  border-color: rgba(10, 102, 194, 0.25);
}
.platform-btn.linkedin:hover {
  background: rgba(10, 102, 194, 0.2);
  color: #a8cce8;
  transform: translateY(-2px);
}

.blog-latest-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.latest-badge {
  background: linear-gradient(135deg, var(--accent-orange), #ff6600);
  color: #fff;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.blog-latest-label > span:last-child {
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: all var(--transition);
}

.blog-card:hover {
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 217, 255, 0.08);
}

.featured-article {
  grid-column: span 1;
  border-color: rgba(255, 153, 0, 0.25);
  background: linear-gradient(135deg, var(--bg-card), rgba(255, 153, 0, 0.04));
}

.featured-article:hover {
  border-color: var(--accent-orange);
  box-shadow: 0 16px 40px rgba(255, 153, 0, 0.1);
}

.blog-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.blog-platform-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-md);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.medium-tag {
  background: rgba(255, 255, 255, 0.08);
  color: #e8e8e8;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.devto-tag {
  background: rgba(8, 56, 88, 0.4);
  color: #a8d8f0;
  border: 1px solid rgba(8, 56, 88, 0.7);
}

.hashnode-tag {
  background: rgba(36, 102, 255, 0.15);
  color: #7ba7ff;
  border: 1px solid rgba(36, 102, 255, 0.3);
}

.linkedin-tag {
  background: rgba(10, 102, 194, 0.15);
  color: #7ab3e0;
  border: 1px solid rgba(10, 102, 194, 0.3);
}

.blog-date {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.blog-card h3 {
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.blog-card > p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.blog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.read-time {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.blog-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.blog-tags span {
  background: var(--accent-orange-dim);
  color: var(--accent-orange);
  padding: 3px 9px;
  border-radius: var(--radius-md);
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid rgba(255, 153, 0, 0.2);
}

.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition);
  margin-top: auto;
}

.blog-link:hover {
  gap: 10px;
  color: #fff;
}

@media (max-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .blog-platforms {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .featured-article {
    grid-column: span 1;
  }
}

/* ================================================
   Contact Section
   ================================================ */
.contact {
  padding: var(--spacing-3xl) 0;
}

.contact-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

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

.contact-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-weight: 600;
  transition: all var(--transition);
}

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

@media (max-width: 768px) {
  .contact-links {
    gap: var(--spacing-md);
  }

  .contact-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    flex: 1;
    min-width: 150px;
  }
}

/* ================================================
   Tech Stack Section
   ================================================ */
.techstack {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}
.stack-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: border-color var(--transition);
}
.stack-category:hover {
  border-color: rgba(255,153,0,0.3);
}
.stack-category-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}
.stack-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.stack-dot.aws { background: #ff9900; }
.stack-dot.terraform { background: #7b42bc; }
.stack-dot.devsecops { background: #00d9ff; }
.stack-dot.monitoring { background: #ff4d4d; }
.stack-dot.compliance { background: #4caf50; }
.stack-dot.containers { background: #2196f3; }
.stack-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.stack-pills span {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  transition: all var(--transition);
}
.stack-pills span:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}
@media (max-width: 1024px) {
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .stack-grid { grid-template-columns: 1fr; }
}

/* ================================================
   Speaking & Community Section
   ================================================ */
.speaking {
  padding: var(--spacing-3xl) 0;
}
.speaking-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}
.speaking-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  transition: all var(--transition);
}
.speaking-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 217, 255, 0.08);
}
.speaking-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}
.speaking-type {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}
.speaking-type.conference { background: rgba(255,153,0,0.15); color: var(--accent-orange); }
.speaking-type.webinar    { background: rgba(0,217,255,0.12); color: var(--accent-cyan); }
.speaking-type.community  { background: rgba(76,175,80,0.12); color: #81c784; }
.speaking-year {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}
.speaking-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}
.speaking-event {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-orange);
  margin: 0;
}
.speaking-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.speaking-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
}
.speaking-tags span {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.15rem 0.5rem;
  font-size: 0.72rem;
  color: var(--text-tertiary);
}
@media (max-width: 900px) {
  .speaking-grid { grid-template-columns: 1fr; }
}

/* ================================================
   Open Source Section
   ================================================ */
.opensource {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}
.opensource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}
.opensource-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: all var(--transition);
}
.opensource-card:hover {
  border-color: rgba(255,153,0,0.3);
  transform: translateY(-3px);
}
.opensource-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}
.opensource-card-header h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}
.repo-icon { color: var(--text-secondary); flex-shrink: 0; }
.opensource-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.opensource-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-tertiary);
}
.repo-lang { display: flex; align-items: center; gap: 0.35rem; }
.lang-dot { width: 10px; height: 10px; border-radius: 50%; }
.lang-dot.terraform-lang { background: #7b42bc; }
.lang-dot.python-lang    { background: #3572A5; }
.repo-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-orange);
  transition: color var(--transition);
}
.repo-link:hover { color: var(--text-primary); }
.opensource-cta {
  background: linear-gradient(135deg, rgba(255,153,0,0.05), rgba(0,217,255,0.05));
  border-color: rgba(255,153,0,0.2);
  align-items: center;
  text-align: center;
  justify-content: center;
}
.opensource-cta h3 {
  font-size: 1.1rem;
  color: var(--text-primary);
}
.cta-gh-icon { color: var(--text-secondary); }
@media (max-width: 900px) {
  .opensource-grid { grid-template-columns: 1fr; }
}

/* ================================================
   Testimonials Section
   ================================================ */
.testimonials {
  padding: var(--spacing-3xl) 0;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  position: relative;
  transition: all var(--transition);
}
.testimonial-card:hover {
  border-color: rgba(0,217,255,0.25);
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}
.quote-icon { color: var(--accent-orange); opacity: 0.6; }
.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
  flex: 1;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}
.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #000;
  flex-shrink: 0;
}
.author-info { display: flex; flex-direction: column; gap: 0.2rem; }
.author-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}
.author-title {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}
@media (max-width: 900px) {
  .testimonials-grid { grid-template-columns: 1fr; }
}

/* ================================================
   Contact Section (enhanced)
   ================================================ */
.contact {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-group input,
.form-group textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-primary);
  transition: border-color var(--transition);
  outline: none;
  resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-tertiary); }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent-cyan); }
.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  background: var(--accent-orange);
  color: #000;
  border: none;
  border-radius: var(--radius-lg);
  padding: 0.85rem 2rem;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-primary);
  cursor: pointer;
  transition: all var(--transition);
}
.form-submit:hover {
  background: #ffad33;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,153,0,0.3);
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
}
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
}
.contact-info-card svg { flex-shrink: 0; color: var(--accent-orange); margin-top: 2px; }
.info-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 0.2rem;
}
.info-value {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.info-value:hover { color: var(--accent-orange); }
.contact-socials {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.social-link:hover { transform: translateX(4px); }
.linkedin-social:hover { border-color: rgba(10,102,194,0.5); color: #7ab3e0; }
.github-social:hover   { border-color: rgba(255,255,255,0.3); color: var(--text-primary); }
.twitter-social:hover  { border-color: rgba(255,255,255,0.2); color: #fff; }
@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ================================================
   Footer
   ================================================ */
.footer {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-tertiary);
  font-size: 0.85rem;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  text-align: center;
}
.footer-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}
.footer-name {
  font-weight: 700;
  color: var(--text-primary);
}
.footer-role {
  color: var(--text-tertiary);
  font-size: 0.82rem;
}
.footer-left .logo-accent { color: var(--accent-orange); font-size: 0.9rem; }
.footer-links {
  display: flex;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent-orange); }
.footer-copy { color: var(--text-tertiary); font-size: 0.8rem; }

/* ================================================
   Responsive Design
   ================================================ */
@media (max-width: 480px) {
  :root {
    --spacing-2xl: 2rem;
    --spacing-3xl: 3rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .expertise-card,
  .project-card {
    padding: var(--spacing-lg);
  }
}

/* ================================================
   FADE-IN ANIMATION (JS-driven via IntersectionObserver)
   ================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.23, 1, 0.32, 1),
              transform 600ms cubic-bezier(0.23, 1, 0.32, 1);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================
   SKIP NAVIGATION (Accessibility)
   ================================================ */
.skip-nav {
  position: absolute;
  top: -100px;
  left: var(--spacing-lg);
  background: var(--accent-orange);
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 9999;
  transition: top 200ms ease;
  text-decoration: none;
}
.skip-nav:focus {
  top: var(--spacing-sm);
}

/* ================================================
   FOCUS VISIBLE — Keyboard Navigation
   ================================================ */
:focus-visible {
  outline: 2px solid var(--accent-orange);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-orange);
  outline-offset: 3px;
}

/* ================================================
   THEME TOGGLE BUTTON
   ================================================ */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  width: 38px;
  height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
  flex-shrink: 0;
  margin-left: var(--spacing-xs);
}
.theme-toggle:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
  background: var(--accent-orange-dim);
}
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

@media (max-width: 768px) {
  .theme-toggle {
    width: 34px;
    height: 34px;
  }
}

/* ================================================
   BACK TO TOP BUTTON
   ================================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--accent-orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(255, 153, 0, 0.35);
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  z-index: 900;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: #ff8800;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 153, 0, 0.45);
}

/* ================================================
   LIGHT THEME — Additional Refinements
   ================================================ */
[data-theme="light"] .expertise-card,
[data-theme="light"] .project-card,
[data-theme="light"] .cert-item,
[data-theme="light"] .metric-box,
[data-theme="light"] .stack-category,
[data-theme="light"] .timeline-item,
[data-theme="light"] .testimonial-card,
[data-theme="light"] .opensource-card,
[data-theme="light"] .contact-info-card {
  box-shadow: var(--card-shadow);
}
[data-theme="light"] .expertise-card:hover,
[data-theme="light"] .project-card:hover,
[data-theme="light"] .opensource-card:hover {
  box-shadow: var(--card-shadow-hover);
}

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

[data-theme="light"] .hero-accent {
  border-color: rgba(255, 153, 0, 0.3);
}

[data-theme="light"] .section-header h2 {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="light"] .nav-menu a {
  color: var(--text-secondary);
}
[data-theme="light"] .nav-menu a:hover {
  color: var(--accent-orange);
}
[data-theme="light"] .nav-toggle span {
  background: var(--text-primary);
}
[data-theme="light"] .footer {
  background: var(--bg-secondary);
  border-top-color: var(--border-color);
}

[data-theme="light"] .card-tags span {
  background: rgba(15, 23, 42, 0.06);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

[data-theme="light"] .highlight-icon {
  color: var(--accent-orange);
}

[data-theme="light"] .stack-pill,
[data-theme="light"] .stack-pills span {
  background: rgba(15, 23, 42, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

[data-theme="light"] .profile-image {
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.15);
}