/* 
  Alzarus - Portfolio & Landing Page
  Design System: Bento Box Grid (UI/UX Pro Max Guide)
  Strict rule: Zero emojis used across design tokens and iconography.
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Dynamic Light Theme Tokens */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --card-hover-border: #cbd5e1;
  --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
  --card-hover-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-primary: #0284c7;
  --accent-primary-hover: #0369a1;
  --accent-light: #e0f2fe;
  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #6366f1 100%);

  --badge-bg: #e0f2fe;
  --badge-text: #0369a1;
  --badge-border: #bae6fd;

  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  /* Dynamic Dark Theme Tokens */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-glass: rgba(11, 15, 25, 0.85);

  --card-bg: #131c2e;
  --card-border: #1e293b;
  --card-hover-border: #334155;
  --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.3);
  --card-hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #38bdf8;
  --accent-primary-hover: #7dd3fc;
  --accent-light: rgba(56, 189, 248, 0.12);
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);

  --badge-bg: rgba(56, 189, 248, 0.12);
  --badge-text: #38bdf8;
  --badge-border: rgba(56, 189, 248, 0.25);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

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

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

/* Container Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Glassmorphism Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  transition: border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 4.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.brand-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 10px rgba(56, 189, 248, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent-primary);
}

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

.theme-toggle {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
  transform: scale(1.05);
  border-color: var(--accent-primary);
}

.theme-icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Language Switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  height: 2.35rem;
  padding: 0 0.55rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--card-border);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.lang-switch:hover {
  border-color: var(--accent-primary);
}

.lang-btn {
  color: var(--text-muted);
  padding: 0.2rem 0.35rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  text-decoration: none;
  line-height: 1;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  color: var(--accent-primary);
  font-weight: 700;
}

.lang-divider {
  color: var(--card-border);
  font-size: 0.75rem;
  user-select: none;
}

/* Page Section Spacing */
.section {
  padding: 5.5rem 0;
}

.section-header {
  margin-bottom: 3rem;
  text-align: center;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

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

/* Bento Box Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.bento-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--card-hover-border);
}

/* Bento Card Grid Span Options */
.col-span-12 { grid-column: span 12; }
.col-span-8 { grid-column: span 8; }
.col-span-7 { grid-column: span 7; }
.col-span-6 { grid-column: span 6; }
.col-span-5 { grid-column: span 5; }
.col-span-4 { grid-column: span 4; }
.col-span-3 { grid-column: span 3; }

/* Hero Section (Bento Grid Hero) */
.hero-section {
  padding-top: 8rem;
  padding-bottom: 3.5rem;
}

.hero-main-card {
  position: relative;
  background: var(--card-bg);
  overflow: hidden;
}

.hero-main-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(99, 102, 241, 0) 70%);
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.6rem;
  line-height: 1.18;
  margin-bottom: 1.25rem;
}

.hero-title .highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.08rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 680px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

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

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

/* Quick Info / Profile Card */
.profile-card {
  align-items: center;
  text-align: center;
}

.profile-avatar {
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 1.15rem;
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.25);
  border: 3px solid var(--card-border);
  overflow: hidden;
  position: relative;
}

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

.profile-name {
  font-size: 1.3rem;
  margin-bottom: 0.25rem;
}

.profile-role {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.15rem;
  line-height: 1.3;
}

.social-links {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

.social-icon-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
  transition: all var(--transition-fast);
}

.social-icon-btn:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.social-icon-btn svg, .social-icon-btn img {
  width: 1.25rem;
  height: 1.25rem;
}

/* Stat Cards */
.stat-card {
  padding: 1.5rem;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--accent-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Featured Highlights / Experience Cards */
.card-header-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background-color: var(--accent-light);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card-header-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke-width: 2;
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  padding: 0.22rem 0.55rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-primary);
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: 0.65rem;
}

.card-link svg {
  width: 1rem;
  height: 1rem;
}

/* Published Apps / Products Showcase */
.app-card {
  flex-direction: row;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 2rem;
}

.app-card-icon {
  flex-shrink: 0;
  width: 6rem;
  height: 6rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
}

.app-card-icon img,
.app-card-icon svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.app-card-body {
  flex: 1;
  min-width: 0;
}

.app-card-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.app-card-heading .card-title {
  margin-bottom: 0;
}

.app-card-store {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  padding: 0.22rem 0.6rem;
  border-radius: 9999px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
}

.app-card-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.88rem;
}

/* List of Highlights inside Cards */
.highlight-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.highlight-bullet-item {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.highlight-bullet-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-primary);
}

/* Skills Matrix Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.5rem;
}

/* Wider card for the last skill group. Must reset to a single track on mobile:
   a leftover span would force an extra implicit column and clip the content. */
.skill-category-card-wide {
  grid-column: span 2;
}

.skill-category-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--card-shadow);
}

.skill-category-title {
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.skill-chip {
  font-size: 0.85rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

/* Career Timeline Section */
.timeline {
  position: relative;
  max-width: 850px;
  margin: 0 auto;
  padding-left: 2rem;
}

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

.timeline-item {
  position: relative;
  margin-bottom: 2.25rem;
}

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

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 0.25rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background-color: var(--accent-primary);
  border: 3px solid var(--bg-primary);
  transform: translateX(-50%);
}

.timeline-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
}

.timeline-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.timeline-company {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.timeline-role {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.timeline-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

/* Certifications & Publications Grid */
.cert-pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.cert-pub-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.cert-pub-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background-color: var(--accent-light);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cert-pub-icon svg {
  width: 1.2rem;
  height: 1.2rem;
}

.cert-pub-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

/* Contact Cards */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.contact-card-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-fast);
}

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

.contact-icon-wrapper {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background-color: var(--accent-light);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon-wrapper svg {
  width: 1.5rem;
  height: 1.5rem;
}

.contact-details-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.contact-details-val {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Footer */
.footer {
  border-top: 1px solid var(--card-border);
  padding: 3rem 0;
  background-color: var(--bg-secondary);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

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

/* Utility Animations & Scroll Reveal */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Menu Toggle Button (Desktop hidden) */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  border-color: var(--accent-primary);
}

/* Ensure no horizontal scrollbar across all viewports */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .col-span-8, .col-span-7, .col-span-5 {
    grid-column: span 12;
  }
  
  .col-span-6, .col-span-4, .col-span-3 {
    grid-column: span 6;
  }

  .hero-title {
    font-size: 2.2rem;
  }
}

/* Navigation collapses earlier than the grid: the horizontal menu runs out
   of room against the logo before the Bento layout needs to stack. */
@media (max-width: 960px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 4.5rem;
    left: 0;
    right: 0;
    width: 100%;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--card-border);
    padding: 1.5rem 2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
    z-index: 99;
  }

  .nav-links.is-active {
    display: flex;
    animation: slideDownNav 0.25s ease-out forwards;
  }

  @keyframes slideDownNav {
    from {
      opacity: 0;
      transform: translateY(-8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    padding: 0.4rem 0;
  }
}

@media (max-width: 768px) {
  .col-span-12, .col-span-8, .col-span-7, .col-span-6, .col-span-5, .col-span-4, .col-span-3 {
    grid-column: span 12 !important;
  }

  .bento-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .skills-grid, .cert-pub-grid {
    grid-template-columns: 1fr;
  }

  .skill-category-card-wide {
    grid-column: auto;
  }

  .hero-section {
    padding-top: 6rem;
    padding-bottom: 2.5rem;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .bento-card {
    padding: 1.5rem;
  }

  .timeline {
    padding-left: 1.5rem;
  }

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

  .timeline-header-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .app-card {
    flex-direction: column;
    gap: 1.25rem;
  }

  .app-card-icon {
    width: 4.5rem;
    height: 4.5rem;
  }

  .contact-card-item {
    padding: 1.25rem;
  }

  .contact-details-val {
    font-size: 0.92rem;
    word-break: break-word;
  }
}

@media (max-width: 576px) {
  .nav-actions {
    gap: 0.5rem;
  }

  .lang-switch {
    height: 2.1rem;
    padding: 0 0.4rem;
    font-size: 0.75rem;
  }

  .container {
    padding: 0 1.15rem;
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .hero-description {
    font-size: 0.95rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .bento-card {
    padding: 1.25rem;
    border-radius: var(--radius-lg);
  }

  .stat-number {
    font-size: 1.75rem;
  }

  .profile-avatar {
    width: 5.5rem;
    height: 5.5rem;
  }

  .footer-content {
    gap: 1rem;
  }
}