/* ==========================================================================
   CSS Custom Properties & Design Tokens
   ========================================================================== */
:root {
  /* Colors - Light Theme */
  --primary-color: #1e3a8a;       /* Trustworthy Oxford Blue */
  --primary-hover: #172554;
  --secondary-color: #0d9488;     /* Academic Teal / STEM vibe */
  --secondary-hover: #0f766e;
  --accent-color: #d97706;        /* Warm Amber/Gold */
  --accent-light: #fef3c7;
  
  --bg-primary: #f8fafc;          /* Pure slate white */
  --bg-secondary: #f1f5f9;        /* Warm white/light grey */
  --bg-glass: rgba(248, 250, 252, 0.8);
  
  --text-primary: #1e293b;        /* Deep charcoal */
  --text-secondary: #475569;      /* Slate grey */
  --text-light: #94a3b8;
  
  --border-color: #e2e8f0;
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
  
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-round: 50%;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  --font-serif: "Lora", Georgia, serif;
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  
  --nav-height: 80px;
}

/* Dark Theme Variables */
body.dark-theme {
  --primary-color: #3b82f6;       /* Radiant Blue */
  --primary-hover: #60a5fa;
  --secondary-color: #14b8a6;     /* Vibrant Teal */
  --secondary-hover: #2dd4bf;
  --accent-color: #f59e0b;        /* Bright Amber */
  --accent-light: #451a03;
  
  --bg-primary: #0f172a;          /* Deep Slate */
  --bg-secondary: #1e293b;        /* Dark Slate Card Background */
  --bg-glass: rgba(15, 23, 42, 0.8);
  
  --text-primary: #f8fafc;        /* Off-white */
  --text-secondary: #cbd5e1;      /* Light grey */
  --text-light: #64748b;
  
  --border-color: #334155;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

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

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

li {
  list-style: none;
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}

/* Shared Containers */
.section-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 100px 0;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Section Header Styles */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-subtitle {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--secondary-color);
  font-size: 14px;
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
}

.underline {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  margin: 16px auto 0;
  border-radius: 2px;
}

/* Button UI Components */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-lg);
}

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

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

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-logo i {
  color: var(--secondary-color);
  font-size: 24px;
}

.nav-menu-desktop {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  font-size: 15px;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-normal);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle-btn, .mobile-toggle-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle-btn:hover, .mobile-toggle-btn:hover {
  background-color: var(--border-color);
}

.mobile-toggle-btn {
  display: none;
}

/* Mobile Side Navigation Drawer */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: -100%;
  width: 100%;
  height: calc(100vh - var(--nav-height));
  background-color: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  z-index: 999;
  transition: left var(--transition-normal);
  padding: 40px 24px;
  box-shadow: var(--shadow-xl);
}

.mobile-menu.open {
  left: 0;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mobile-link {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.mobile-link:hover {
  color: var(--primary-color);
  padding-left: 8px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 160px 0 100px;
  background-color: var(--bg-primary);
  overflow: hidden;
}

.hero-bg-accent {
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: var(--border-radius-round);
  background: radial-gradient(circle, rgba(13, 148, 136, 0.08) 0%, rgba(30, 58, 138, 0.02) 70%, transparent 100%);
  z-index: 1;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 2;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--accent-light);
  color: var(--accent-color);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1.15;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
}

.hero-subtitle strong {
  color: var(--primary-color);
}

.hero-buttons {
  display: flex;
  gap: 16px;
}

.hero-image-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.hero-image-border {
  width: 340px;
  height: 380px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 4px solid var(--bg-secondary);
  background-color: var(--border-color);
}

.hero-profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-image-wrapper:hover .hero-profile-img {
  transform: scale(1.05);
}

/* Micro-interaction stats tags cleanly positioned under the image */
.hero-image-tags {
  display: flex;
  gap: 16px;
  width: 100%;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stat-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hero-stat-tag:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-color);
}

.hero-stat-tag i {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-round);
  background-color: var(--primary-color);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.hero-stat-tag:nth-child(2) i {
  background-color: var(--secondary-color);
}

.hero-stat-tag h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.hero-stat-tag p {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ==========================================================================
   About Me Section
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}

.about-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.card-icon-wrapper {
  width: 50px;
  height: 50px;
  background-color: rgba(30, 58, 186, 0.08);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary-color);
}

body.dark-theme .card-icon-wrapper {
  background-color: rgba(59, 130, 246, 0.15);
}

.info-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.info-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

.about-text h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.about-text p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.personal-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.highlight-item i {
  color: var(--secondary-color);
  font-size: 14px;
  width: 24px;
  height: 24px;
  border-radius: var(--border-radius-round);
  background-color: rgba(13, 148, 136, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}

body.dark-theme .highlight-item i {
  background-color: rgba(20, 184, 166, 0.15);
}

.highlight-item span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.skill-category h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--text-primary);
  margin-bottom: 28px;
  border-left: 4px solid var(--secondary-color);
  padding-left: 12px;
}

.skill-item {
  margin-bottom: 24px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.skill-info span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.skill-info .skill-percentage {
  color: var(--primary-color);
}

.skill-progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.skill-progress {
  width: 0; /* Dynamic expansion via script.js */
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 4px;
  transition: width 1.5s cubic-bezier(0.1, 0.8, 0.2, 1);
}

/* Competency Badges */
.additional-skills {
  margin-top: 48px;
  text-align: center;
}

.additional-skills h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.badges-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.skill-badge i {
  color: var(--secondary-color);
}

.skill-badge:hover {
  transform: translateY(-2px);
  background-color: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

.skill-badge:hover i {
  color: #ffffff;
}

/* ==========================================================================
   Education (Timeline Layout)
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 32px;
}

/* Line drawing */
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 8px;
  width: 3px;
  height: calc(100% - 16px);
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

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

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: var(--border-radius-round);
  background-color: var(--bg-primary);
  border: 3px solid var(--secondary-color);
  z-index: 2;
  transition: background-color var(--transition-fast);
}

.timeline-item:hover .timeline-marker {
  background-color: var(--secondary-color);
}

.timeline-content {
  padding: 28px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.timeline-content:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-color);
}

.timeline-date {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-institution {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-style: italic;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Experience Section
   ========================================================================== */
.experience-showcase {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.experience-overview {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: center;
}

.stat-box-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.stat-box {
  padding: 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.stat-number {
  display: block;
  font-size: 40px;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.experience-summary h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.experience-summary p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.experience-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.exp-card {
  padding: 32px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.exp-card-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.exp-card-header i {
  width: 54px;
  height: 54px;
  border-radius: var(--border-radius-sm);
  background-color: rgba(13, 148, 136, 0.08);
  color: var(--secondary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

body.dark-theme .exp-card-header i {
  background-color: rgba(20, 184, 166, 0.15);
}

.exp-card-header h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.exp-duration {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.exp-card ul {
  padding-left: 18px;
}

.exp-card li {
  list-style-type: disc;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.exp-card li:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Achievements Section
   ========================================================================== */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.achievement-card {
  padding: 36px 28px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.achievement-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-color);
}

.achievement-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius-round);
  background-color: var(--accent-light);
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto 24px;
  transition: transform var(--transition-normal);
}

.achievement-card:hover .achievement-icon {
  transform: rotateY(180deg);
}

.achievement-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.achievement-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Testimonials (Carousel Styles)
   ========================================================================== */
.testimonials-carousel-wrapper {
  max-width: 750px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  padding: 10px;
}

.testimonials-carousel {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
}

.testimonial-slide {
  width: 100%;
  position: absolute;
  opacity: 0;
  transform: translateX(40px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.testimonial-slide.active {
  opacity: 1;
  transform: translateX(0);
  position: relative;
  pointer-events: auto;
}

.testimonial-quote {
  padding: 36px 36px 28px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  position: relative;
}

.testimonial-rating {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  color: var(--accent-color);
  font-size: 14px;
}

.testimonial-quote i {
  position: absolute;
  top: -15px;
  left: 28px;
  font-size: 32px;
  color: rgba(13, 148, 136, 0.2);
}

.testimonial-quote p {
  font-size: 16px;
  line-height: 1.7;
  font-style: italic;
  color: var(--text-primary);
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
  padding-left: 20px;
}

.user-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-round);
  background-color: var(--primary-color);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

body.dark-theme .user-avatar {
  background-color: var(--bg-secondary);
  color: var(--primary-color);
  border: 1px solid var(--border-color);
}

.user-info h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.user-info p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Control Navigation buttons */
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 36px;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-round);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.carousel-btn:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #ffffff;
}

.carousel-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: var(--border-radius-round);
  background-color: var(--border-color);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.dot.active {
  background-color: var(--secondary-color);
  transform: scale(1.25);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}

.contact-info-col h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.contact-info-col p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.icon-box {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-sm);
  background-color: rgba(30, 58, 186, 0.08);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

body.dark-theme .icon-box {
  background-color: rgba(59, 130, 246, 0.15);
}

.contact-detail-item h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  margin-bottom: 2px;
}

.contact-detail-item p, .contact-detail-item a {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-detail-item a:hover {
  color: var(--secondary-color);
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-round);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.social-links a:hover {
  transform: translateY(-4px);
  background-color: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

/* Contact Form Formats */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 40px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  position: relative;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
}

.input-wrapper {
  position: relative;
}

.input-wrapper i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  font-size: 15px;
}

.text-area-wrapper i {
  top: 24px;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.1);
  background-color: var(--bg-primary);
}

/* Client-side Validation styling */
.form-group.invalid input, .form-group.invalid textarea {
  border-color: #ef4444;
}

.form-group.invalid input:focus, .form-group.invalid textarea:focus {
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

.error-msg {
  font-size: 11px;
  font-weight: 600;
  color: #ef4444;
  margin-top: 4px;
  display: none;
}

.form-group.invalid .error-msg {
  display: block;
}

.btn-submit {
  justify-content: center;
  margin-top: 8px;
}

.form-success-box {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 16px;
  padding: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  z-index: 10;
}

.form-success-box.show {
  opacity: 1;
  pointer-events: auto;
}

.form-success-box i {
  font-size: 56px;
  color: #10b981;
}

.form-success-box h4 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--text-primary);
}

.form-success-box p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 30px;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-logo i {
  color: var(--secondary-color);
  font-size: 26px;
}

.footer-quote {
  font-family: var(--font-serif);
  font-size: 16px;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 420px;
}

.quote-author {
  display: block;
  font-family: var(--font-sans);
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 8px;
  color: var(--primary-color);
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-light);
  margin-bottom: 20px;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.footer-links-grid a {
  font-size: 14px;
  color: var(--text-secondary);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-light);
}

/* ==========================================================================
   Animations & Scroll Reveal states
   ========================================================================== */
.fade-in-el {
  opacity: 0;
  transform: translateY(20px);
  animation: introFade 0.8s forwards;
}

.hero-content .fade-in-el:nth-child(1) { animation-delay: 0.1s; }
.hero-content .fade-in-el:nth-child(2) { animation-delay: 0.2s; }
.hero-content .fade-in-el:nth-child(3) { animation-delay: 0.3s; }
.hero-content .fade-in-el:nth-child(4) { animation-delay: 0.4s; }
.hero-image-wrapper {
  opacity: 0;
  transform: scale(0.95);
  animation: introFadeScale 1s forwards;
  animation-delay: 0.2s;
}

@keyframes introFade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes introFadeScale {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Scroll reveal utility classes */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-container {
    gap: 40px;
  }
  
  .hero-title {
    font-size: 46px;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .about-info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 30px;
  }
  
  /* Navbar */
  .mobile-toggle-btn {
    display: flex;
  }
  
  .nav-menu-desktop {
    display: none;
  }
  
  /* Hero */
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
    padding-top: 40px;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-image-border {
    width: 280px;
    height: 320px;
  }
  
  /* About Info Cards */
  .about-info-cards {
    grid-template-columns: 1fr;
  }
  
  .personal-highlights {
    grid-template-columns: 1fr;
  }
  
  /* Skills */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  /* Experience */
  .experience-overview {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .experience-cards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .contact-form {
    padding: 30px 20px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* Footer */
  .footer-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 36px;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-image-tags {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 280px;
  }
  
  .timeline {
    padding-left: 20px;
  }
  
  .timeline::before {
    left: 4px;
  }
  
  .timeline-marker {
    left: -20px;
    width: 12px;
    height: 12px;
    border-width: 2px;
  }
  
  .timeline-content {
    padding: 18px;
  }
  
  .testimonial-quote {
    padding: 24px 20px 16px;
  }
}