/* ==========================================================================
   QA PORTFOLIO - MODERN DESIGN SYSTEM & STYLESHEET
   Aesthetics: Sleek Slate/Zinc Dark Mode, Glassmorphism, Micro-animations
   ========================================================================== */

:root {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.75);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #38bdf8;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-cyan: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #ec4899 100%);
  --gradient-card: linear-gradient(180deg, rgba(30, 41, 59, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px -3px rgba(56, 189, 248, 0.25);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

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

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

button, input, textarea, select {
  font-family: inherit;
}

/* Focus Accessibility */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

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

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color 0.2s;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  font-family: var(--font-display);
}

.brand-icon {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}

.brand-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
  font-weight: 600;
}

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

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

.nav-swagger-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  border: 1px solid rgba(99, 102, 241, 0.3);
  transition: all 0.2s ease;
}

.nav-swagger-btn:hover {
  background: rgba(99, 102, 241, 0.25);
  transform: translateY(-1px);
}

.site-header nav {
  display: flex;
  align-items: center;
}

.mobile-menu-btn {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  width: 2.6rem;
  height: 2.6rem;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.mobile-menu-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(56, 189, 248, 0.35);
  color: var(--accent-cyan);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 6rem 0 5rem;
  overflow: hidden;
}

.hero-glow-bg {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.18) 0%, rgba(56, 189, 248, 0.12) 40%, rgba(9, 13, 22, 0) 70%);
  filter: blur(50px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}


/* Explicitly suppress legacy badge elements */
.hero-pill-badge,
.status-dot {
  display: none !important;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  background: linear-gradient(180deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-bio {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.hero-meta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2.25rem;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(56, 189, 248, 0.3);
}

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

.btn-secondary {
  background: rgba(30, 41, 59, 0.8);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

/* Sections Common */
.section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-subtle);
  scroll-margin-top: 5rem;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.skill-category-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.skill-category-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: var(--shadow-glow);
}

.skill-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.skill-card-title {
  font-size: 1.15rem;
  color: var(--text-primary);
}

.skill-badge-count {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

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

.skill-chip {
  display: inline-block;
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.skill-chip:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
}

/* Projects Filter & Search Bar */
.projects-controls {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.search-input-wrap {
  position: relative;
  max-width: 500px;
  width: 100%;
  margin: 0 auto;
}

.search-input-wrap svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 2.75rem;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

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

.filter-pill {
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-pill:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.filter-pill.active {
  background: var(--accent-cyan);
  color: #090d16;
  border-color: var(--accent-cyan);
  font-weight: 600;
}

.featured-toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.featured-toggle-wrap input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--accent-cyan);
  width: 1rem;
  height: 1rem;
}

/* Projects Cards Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-category-tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  border: 1px solid rgba(99, 102, 241, 0.3);
  font-weight: 600;
}

.featured-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-weight: 600;
}

.project-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

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

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.project-links {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
}

.icon-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-cyan);
}

/* More Projects Showcase Card */
.more-projects-card {
  margin-top: 3.5rem;
  padding: 2.25rem 2.5rem;
  background: radial-gradient(ellipse at 85% 50%, rgba(99, 102, 241, 0.15), transparent 60%),
              radial-gradient(ellipse at 15% 50%, rgba(56, 189, 248, 0.12), transparent 60%),
              rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.6), 0 0 25px rgba(56, 189, 248, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.more-projects-card:hover {
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 20px 45px -10px rgba(0, 0, 0, 0.75), 0 0 35px rgba(56, 189, 248, 0.18);
  transform: translateY(-2px);
}

.more-projects-content {
  flex: 1;
}

.more-projects-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  margin-bottom: 0.75rem;
}

.more-projects-heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 0.5rem;
  letter-spacing: -0.015em;
}

.more-projects-subtext {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0;
}

.more-projects-action {
  flex-shrink: 0;
}

.more-projects-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.9rem 1.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #0284c7, #6366f1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.35);
  transition: all 0.25s ease;
  text-decoration: none;
  white-space: nowrap;
}

.more-projects-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.55);
  color: #ffffff;
  filter: brightness(1.1);
}

/* Experiences Timeline */
.timeline-wrap {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan) 0%, rgba(56, 189, 248, 0.1) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

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

.timeline-marker {
  position: absolute;
  top: 0.35rem;
  left: -2rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

.timeline-marker.active {
  background: var(--accent-cyan);
}

.timeline-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.timeline-card:hover {
  transform: translateX(4px);
  border-color: rgba(56, 189, 248, 0.3);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline-role {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.timeline-company {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.timeline-period {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.timeline-current-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
  font-weight: 600;
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Contact Section & Form */
.contact-wrap {
  max-width: 650px;
  margin: 0 auto;
}

.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-label .req {
  color: var(--accent-rose);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.form-textarea {
  min-height: 130px;
  resize: vertical;
}

.char-counter-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.feedback-banner {
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: none;
}

.feedback-banner.success {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.feedback-banner.error {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fb7185;
}

/* Modal Dialog */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: #0f172a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.25rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), var(--shadow-glow);
  transform: scale(0.95);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
  transition: color 0.15s;
}

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

/* Skeletons & States */
.skeleton {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.04) 25%, rgba(255, 255, 255, 0.08) 50%, rgba(255, 255, 255, 0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}

.error-state {
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid rgba(244, 63, 94, 0.2);
  border-radius: var(--radius-lg);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.85rem 1.75rem;
  margin-bottom: 1.25rem;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.footer-nav a:hover {
  color: var(--accent-cyan);
}

.site-footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .site-header nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
  }

  .mobile-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 4.5rem;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(9, 13, 22, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.65);
    padding: 1.5rem 1.75rem 2rem;
    gap: 1.25rem;
    z-index: 100;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.5rem 0;
    font-size: 1.05rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav-links li:last-child a {
    border-bottom: none;
  }

  .nav-swagger-btn {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
    margin-top: 0.5rem;
    font-size: 0.95rem;
  }

  .hero-section {
    padding: 4rem 0 3rem;
  }

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

  .more-projects-card {
    flex-direction: column;
    text-align: center;
    padding: 1.75rem 1.5rem;
    gap: 1.5rem;
  }

  .more-projects-action {
    width: 100%;
  }

  .more-projects-cta-btn {
    width: 100%;
    justify-content: center;
  }

  .site-footer {
    padding: 2.5rem 1.25rem;
  }

  .footer-nav {
    gap: 0.65rem 1.25rem;
    margin-bottom: 1rem;
    padding: 0 0.5rem;
  }

  .footer-nav a {
    font-size: 0.85rem;
  }

  .site-footer p {
    font-size: 0.8rem;
  }
}