@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ==========================================
   THEME STYLES & ROOT VARIABLES
   ========================================== */
:root {
  /* Dark Mode Default Theme Tokens */
  --bg-primary: #0A0D1A;
  --bg-secondary: #111527;
  --bg-accent: rgba(17, 21, 39, 0.7);
  
  --color-primary: #0EA5E9;      /* Sapphire Blue */
  --color-primary-glow: rgba(14, 165, 233, 0.25);
  --color-primary-rgb: 14, 165, 233;
  --color-secondary: #06B6D4;    /* Electric Cyan */
  --color-secondary-glow: rgba(6, 182, 212, 0.2);
  --color-secondary-rgb: 6, 182, 212;
  --color-tertiary: #0284C7;     /* Deep Sapphire Blue */
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-neon-primary: rgba(14, 165, 233, 0.3);
  --border-neon-secondary: rgba(6, 182, 212, 0.3);
  
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
  --glow-shadow: 0 0 20px rgba(14, 165, 233, 0.25);
  
  --font-family-body: 'Inter', sans-serif;
  --font-family-title: 'Outfit', sans-serif;
  
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --border-radius-lg: 20px;
  --border-radius-md: 12px;
}

/* Light Mode Overrides (Triggered by data-theme="light" on html/body) */
[data-theme="light"] {
  --bg-primary: #F3F4F6;
  --bg-secondary: #FFFFFF;
  --bg-accent: rgba(255, 255, 255, 0.8);
  
  --color-primary: #0284C7;      /* Richer Sapphire Blue for strong readability */
  --color-primary-glow: rgba(2, 132, 199, 0.15);
  --color-primary-rgb: 2, 132, 199;
  --color-secondary: #0891B2;    /* Dynamic Cyan */
  --color-secondary-glow: rgba(8, 145, 178, 0.15);
  --color-secondary-rgb: 8, 145, 178;
  --color-tertiary: #0369A1;
  
  --text-primary: #1F2937;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;
  
  --border-glass: rgba(0, 0, 0, 0.08);
  --border-neon-primary: rgba(2, 132, 199, 0.25);
  --border-neon-secondary: rgba(8, 145, 178, 0.25);
  
  --card-shadow: 0 10px 30px rgba(31, 41, 55, 0.06);
  --glow-shadow: 0 4px 20px rgba(2, 132, 199, 0.15);
}

/* --- RESET & RESET DEFAULTS --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family-body);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
  background-image: 
    radial-gradient(circle at 5% 15%, var(--color-primary-glow) 0%, transparent 40%),
    radial-gradient(circle at 95% 85%, var(--color-secondary-glow) 0%, transparent 45%);
}

body::-webkit-scrollbar {
  width: 8px;
}
body::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
body::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border: 1px solid var(--bg-primary);
  border-radius: 10px;
}
body::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

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

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

/* --- CONTAINER & UTILITIES --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-gradient-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #A78BFA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-secondary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #34D399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.glass-card {
  background: var(--bg-accent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  box-shadow: var(--card-shadow);
  border-radius: var(--border-radius-lg);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--border-neon-primary);
  transform: translateY(-4px);
}

/* --- ANIMATION KEYFRAMES --- */
@keyframes spin-slow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes pulse-slow {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.05); opacity: 0.6; }
}

@keyframes blink-cursor {
  50% { border-color: transparent; }
}

/* ==========================================
   NAVIGATION & HEADER
   ========================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 13, 26, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

[data-theme="light"] header {
  background: rgba(243, 244, 246, 0.75);
}

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

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  font-family: var(--font-family-title);
  font-size: 26px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
}

.logo span {
  color: var(--color-primary);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF; /* High-contrast white navigation text in dark mode */
  position: relative;
  padding: 6px 0;
  opacity: 0.85;
  transition: var(--transition-smooth);
}

.nav-link:hover {
  color: #FFFFFF;
  opacity: 1;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

[data-theme="light"] .nav-link {
  color: var(--text-primary); /* High-contrast text in light mode */
  opacity: 1;
}

[data-theme="light"] .nav-link:hover {
  color: var(--color-primary);
  text-shadow: none;
}

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

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

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

/* Custom Theme Toggle Button */
.btn-theme-toggle {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition-smooth);
  box-shadow: var(--card-shadow);
}

[data-theme="light"] .btn-theme-toggle {
  background: rgba(0, 0, 0, 0.03);
}

.btn-theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--glow-shadow);
}

.btn-theme-toggle .fa-sun {
  display: none;
}

[data-theme="light"] .btn-theme-toggle .fa-moon {
  display: none;
}

[data-theme="light"] .btn-theme-toggle .fa-sun {
  display: block;
}

.btn-nav-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-tertiary) 100%);
  color: white;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 700;
  border-radius: 30px;
  border: none;
  box-shadow: 0 4px 15px var(--color-primary-glow);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.btn-nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
}

/* ==========================================
   HERO DISPLAY SHOWCASE
   ========================================== */
.hero {
  padding-top: 170px;
  padding-bottom: 90px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-intro-tag {
  background: var(--color-primary-glow);
  border: 1px solid var(--border-neon-primary);
  color: var(--text-primary);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-title {
  font-family: var(--font-family-title);
  font-size: 58px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero-typing-wrap {
  font-family: var(--font-family-title);
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-secondary);
  height: 48px;
  display: flex;
  align-items: center;
}

.hero-typing-text {
  color: var(--color-primary);
  border-right: 3px solid var(--color-primary);
  padding-right: 4px;
  white-space: nowrap;
  animation: blink-cursor 0.75s step-end infinite;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 17px;
  margin-bottom: 36px;
  max-width: 580px;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-tertiary) 100%);
  color: white;
  padding: 16px 32px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 20px var(--color-primary-glow);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--color-primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  padding: 16px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition-smooth);
}

[data-theme="light"] .btn-secondary {
  background: rgba(0, 0, 0, 0.02);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

/* Avatar Graphics Overlay */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.avatar-halo-wrapper {
  position: relative;
  width: 360px;
  height: 360px;
}

.avatar-ring {
  position: absolute;
  top: -15px;
  left: -15px;
  right: -15px;
  bottom: -15px;
  border-radius: 50%;
  border: 2px dashed rgba(var(--color-primary-rgb), 0.15);
  animation: spin-slow 25s linear infinite;
  pointer-events: none;
}

.avatar-ring-2 {
  position: absolute;
  top: -30px;
  left: -30px;
  right: -30px;
  bottom: -30px;
  border-radius: 50%;
  border: 1px solid rgba(var(--color-secondary-rgb), 0.15);
  animation: spin-slow 40s linear infinite reverse;
  pointer-events: none;
}

.avatar-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-slow 6s ease-in-out infinite;
  z-index: 1;
}

.avatar-content {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 4px solid var(--border-glass);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: var(--transition-smooth);
}

.avatar-content img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.avatar-halo-wrapper:hover .avatar-content {
  border-color: var(--color-primary);
  box-shadow: var(--glow-shadow);
}

.avatar-halo-wrapper:hover .avatar-content img {
  transform: scale(1.05);
}

/* ==========================================
   ABOUT & STATS CONTAINER
   ========================================== */
.about-section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 60px;
}

.section-subtitle {
  color: var(--color-primary);
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-family: var(--font-family-title);
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 16px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text h3 {
  font-family: var(--font-family-title);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.stats-matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media screen and (max-width: 580px) {
  .stats-matrix {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

.stat-box.glass-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: 32px;
  padding: clamp(24px, 4vw, 40px) clamp(20px, 3.2vw, 32px) clamp(20px, 3.2vw, 32px) clamp(20px, 3.2vw, 32px);
  text-align: left;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: clamp(160px, 18vw, 200px);
  position: relative;
  overflow: hidden;
}

.stat-box.glass-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(31, 41, 55, 0.08);
}

[data-theme="dark"] .stat-box.glass-card:hover {
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), var(--glow-shadow);
}

.stat-num {
  font-family: var(--font-family-title);
  font-size: clamp(3rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: clamp(16px, 3.5vw, 32px); /* Generous margins below the numbers as requested */
  letter-spacing: -0.03em;
  transition: var(--transition-smooth);
}

.stat-num.color-primary {
  color: var(--color-primary);
  background: none;
  -webkit-background-clip: initial;
  -webkit-text-fill-color: initial;
}

.stat-num.color-secondary {
  color: var(--color-secondary);
  background: none;
  -webkit-background-clip: initial;
  -webkit-text-fill-color: initial;
}

.stat-label {
  color: var(--text-primary); /* Slate primary for rich readability matching reference image */
  font-size: clamp(15px, 1.2vw, 17px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

/* ==========================================
   INTERACTIVE SKILLS MATRIX
   ========================================== */
.skills-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.skills-card {
  padding: 40px 30px;
}

.skills-card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-md);
  background: var(--color-primary-glow);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 24px;
}

.skills-card h3 {
  font-family: var(--font-family-title);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.skill-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 600;
}

.skill-progress-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

[data-theme="light"] .skill-progress-bg {
  background: rgba(0, 0, 0, 0.05);
}

.skill-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  width: 0; /* Animated dynamically on load/scroll via JS */
  box-shadow: 0 0 8px var(--color-primary);
  transition: width 1.5s cubic-bezier(0.1, 0.8, 0.25, 1);
}

.skills-card:nth-child(even) .skill-progress-fill {
  background: var(--color-secondary);
  box-shadow: 0 0 8px var(--color-secondary);
}

/* ==========================================
   TIMELINE / EXPERIENCE ROADMAP
   ========================================== -->
.timeline-section {
  padding: 100px 0;
  position: relative;
}

.timeline-wrapper {
  position: relative;
  max-width: 850px;
  margin: 0 auto;
}

/* Vertical Core Connector Line */
.timeline-wrapper::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-glass);
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 50px;
  width: 100%;
}

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

.timeline-content-panel {
  width: 44%;
  padding: 30px;
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translate(-50%, 6px);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 4px solid var(--color-primary);
  z-index: 10;
  box-shadow: var(--glow-shadow);
  transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-dot {
  background-color: var(--color-primary);
  transform: translate(-50%, 6px) scale(1.2);
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-date {
  font-family: var(--font-family-title);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.timeline-content-panel h4 {
  font-family: var(--font-family-title);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 500;
}

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

/* ==========================================
   PORTFOLIO grid / SHOWCASE
   ========================================== */
.portfolio-section {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

[data-theme="light"] .filter-btn {
  background: rgba(0, 0, 0, 0.02);
}

.filter-btn:hover {
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-tertiary) 100%);
  color: white;
  border: none;
  box-shadow: 0 4px 15px var(--color-primary-glow);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
  justify-content: center;
}

.portfolio-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-width: 420px;
  width: 100%;
  margin: 0 auto;
}

.portfolio-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--glow-shadow);
}

.portfolio-img-box {
  width: 100%;
  height: 220px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-glass);
}

.portfolio-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.portfolio-card:hover .portfolio-img-box img {
  transform: scale(1.05);
}

.portfolio-details {
  padding: 30px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.portfolio-tag {
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.portfolio-title {
  font-family: var(--font-family-title);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.portfolio-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.5;
}

.portfolio-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.portfolio-tech-tags {
  display: flex;
  gap: 8px;
}

.tech-tag {
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary);
}

[data-theme="light"] .tech-tag {
  background: rgba(var(--color-primary-rgb), 0.08);
  border-color: rgba(var(--color-primary-rgb), 0.2);
}

.portfolio-link-arrow {
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.25);
  color: var(--color-primary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition-smooth);
}

.portfolio-card:hover .portfolio-link-arrow {
  background: var(--color-primary);
  color: #0A0D1A;
  border-color: var(--color-primary);
  transform: rotate(-45deg);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

/* ==========================================
   ENDORSEMENTS / TESTIMONIALS SLIDER
   ========================================== */
.testimonials-section {
  padding: 100px 0;
  background: var(--bg-primary);
}

.slider-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  min-height: 280px;
}

.testimonial-slide {
  text-align: center;
  padding: 30px 40px;
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.testimonial-slide.active {
  display: block;
  opacity: 1;
}

.testimonial-stars {
  font-size: 18px;
  color: #FBBF24;
  margin-bottom: 20px;
}

.testimonial-quote {
  font-size: 19px;
  font-style: italic;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
}

.author-img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary-glow);
  transition: var(--transition-smooth);
}

.testimonial-slide:hover .author-img {
  transform: scale(1.05);
  box-shadow: 0 0 18px var(--color-primary);
}

.author-name {
  font-family: var(--font-family-title);
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
}

.author-role {
  font-size: 13px;
  color: var(--text-secondary);
}

.slider-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 30px;
}

.slider-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

[data-theme="light"] .slider-btn {
  background: rgba(0, 0, 0, 0.02);
}

.slider-btn:hover {
  background: var(--color-primary);
  color: #0A0D1A;
  border-color: var(--color-primary);
  box-shadow: var(--glow-shadow);
}

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

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: var(--transition-smooth);
}

[data-theme="light"] .dot {
  background: rgba(0, 0, 0, 0.15);
}

.dot.active {
  background: var(--color-primary);
  width: 24px;
  border-radius: 4px;
}

/* ==========================================
   CONTACT / LET'S COLLABORATE CONSOLE
   ========================================== */
.contact-section {
  padding: 100px 0;
  position: relative;
}

.contact-card {
  padding: 60px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: center;
}

.contact-info-panel h3 {
  font-family: var(--font-family-title);
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-info-panel p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.contact-detail-text h6 {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.contact-detail-text p {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-form-panel {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  padding: 40px;
  border-radius: var(--border-radius-lg);
}

[data-theme="light"] .contact-form-panel {
  background: rgba(0, 0, 0, 0.01);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-custom {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 15px;
  transition: var(--transition-smooth);
}

[data-theme="light"] .input-custom {
  background: rgba(0, 0, 0, 0.02);
}

.input-custom:focus {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.02);
  box-shadow: 0 0 15px var(--color-primary-glow);
}

.btn-submit-contact {
  width: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-tertiary) 100%);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 16px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 15px var(--color-primary-glow);
  transition: var(--transition-smooth);
}

.btn-submit-contact:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}

/* ==========================================
   FOOTER SECTION
   ========================================== */
footer {
  background: #070912;
  border-top: 1px solid var(--border-glass);
  padding: 80px 0 40px;
  transition: background-color 0.4s ease;
}

[data-theme="light"] footer {
  background: #E5E7EB;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-logo-area p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col h5 {
  font-family: var(--font-family-title);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.footer-links a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

[data-theme="light"] .footer-bottom {
  border-top-color: rgba(0, 0, 0, 0.06);
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition-smooth);
}

[data-theme="light"] .social-btn {
  background: rgba(0, 0, 0, 0.01);
}

.social-btn:hover {
  color: #0A0D1A;
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--glow-shadow);
  transform: translateY(-2px);
}

/* ==========================================
   AMBIENT GLOW ORBS (BACKGROUND EFFECTS)
   ========================================== */
.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(130px);
  -webkit-filter: blur(130px);
  z-index: -1;
  opacity: 0.18;
  mix-blend-mode: screen;
  pointer-events: none;
  will-change: transform;
}

[data-theme="light"] .ambient-orb {
  opacity: 0.08;
  mix-blend-mode: multiply;
  filter: blur(150px);
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
  top: 10%;
  left: -5%;
  animation: float-slow-1 25s ease-in-out infinite;
}

.orb-2 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  top: 45%;
  right: -10%;
  animation: float-slow-2 30s ease-in-out infinite alternate;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-tertiary) 0%, transparent 70%);
  bottom: 10%;
  left: 15%;
  animation: float-slow-3 28s ease-in-out infinite;
}

@keyframes float-slow-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -60px) scale(1.1); }
  66% { transform: translate(-30px, 30px) scale(0.95); }
}

@keyframes float-slow-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-70px, 50px) scale(1.15); }
}

@keyframes float-slow-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40% { transform: translate(50px, 40px) scale(0.9); }
  75% { transform: translate(-40px, -50px) scale(1.1); }
}

/* ==========================================
   GLASS CURSOR FOLLOWER
   ========================================== */
.cursor-follower {
  position: fixed;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(var(--color-primary-rgb), 0.04);
  border: 1px solid rgba(var(--color-secondary-rgb), 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.1s cubic-bezier(0.1, 0.8, 0.2, 1);
  will-change: top, left, transform;
  box-shadow: 0 0 15px rgba(var(--color-secondary-rgb), 0.15);
}

.cursor-follower::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4px;
  height: 4px;
  background-color: var(--color-secondary);
  border-radius: 50%;
  transition: var(--transition-smooth);
}

/* Hide on mobile devices */
@media screen and (max-width: 768px) {
  .cursor-follower {
    display: none;
  }
}

/* ==========================================
   SCROLL REVEAL ANIMATIONS
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(35px);
  filter: blur(4px);
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1), filter 0.8s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: opacity, transform, filter;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}
}

/* ==========================================
   SMT PRODUCTION & COST SIMULATOR
   ========================================== */
.simulator-section {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.simulator-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: stretch;
}

@media screen and (max-width: 1024px) {
  .simulator-wrapper {
    grid-template-columns: 1fr;
  }
}

.simulator-form-panel {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.simulator-form-panel h3 {
  font-family: var(--font-family-title);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  color: var(--text-primary);
}

.select-custom {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2306B6D4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 16px;
  transition: var(--transition-smooth);
}

[data-theme="light"] .select-custom {
  background-color: rgba(0, 0, 0, 0.02);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230284C7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

.select-custom:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 15px var(--color-secondary-glow);
  background-color: rgba(6, 182, 212, 0.02);
}

.range-slider-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.range-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.range-val-bubble {
  background: rgba(var(--color-secondary-rgb), 0.1);
  border: 1px solid var(--border-neon-secondary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-secondary);
  box-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.1);
  transition: var(--transition-smooth);
}

.range-slider {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: var(--transition-smooth);
}

[data-theme="light"] .range-slider {
  background: rgba(0, 0, 0, 0.05);
}

.range-slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-secondary);
  border: 2px solid var(--bg-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.5);
  transition: var(--transition-smooth);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 15px var(--color-secondary);
}

/* Screen HUD Display styling */
.simulator-screen-panel {
  background: #05070F;
  border: 1px solid rgba(var(--color-primary-rgb), 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8), inset 0 0 40px rgba(var(--color-primary-rgb), 0.03);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.simulator-screen-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%),
    linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
  background-size: 100% 4px, 6px 100%;
  pointer-events: none;
  z-index: 10;
  opacity: 0.45;
}

.screen-header-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.01);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-family: 'Courier New', Courier, monospace;
}

.screen-title-hud {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.screen-title-hud span {
  width: 8px;
  height: 8px;
  background-color: var(--color-secondary);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--color-secondary);
  animation: blink-fast 1s infinite alternate;
}

@keyframes blink-fast {
  0% { opacity: 0.3; }
  100% { opacity: 1; }
}

.screen-clock-hud {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
}

/* Simulation view port area */
.gps-map-area {
  position: relative;
  background: radial-gradient(circle at center, rgba(14, 165, 233, 0.03) 0%, transparent 80%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
}

.radar-sweep {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 1px solid rgba(var(--color-primary-rgb), 0.04);
  background: conic-gradient(from 0deg at 50% 50%, rgba(6, 182, 212, 0.08) 0deg, transparent 90deg, transparent 360deg);
  transform: translate(-50%, -50%);
  animation: rotate-radar 6s linear infinite;
  pointer-events: none;
  z-index: 1;
}

@keyframes rotate-radar {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.sim-message-overlay {
  text-align: center;
  z-index: 2;
  max-width: 360px;
  padding: 20px;
}

.sim-message-overlay h4 {
  font-family: var(--font-family-title);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.sim-message-overlay p {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* PCB Visualizer & Animations */
.map-visualizer {
  z-index: 2;
}

.laser-sweep {
  position: absolute;
  left: 20px;
  right: 20px;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--color-secondary) 30%, var(--color-secondary) 70%, transparent);
  box-shadow: 0 0 15px var(--color-secondary);
  border-radius: 2px;
  pointer-events: none;
  z-index: 5;
  top: 20px;
  opacity: 0;
}

/* Active sweep animation */
.laser-sweep.sweeping {
  opacity: 1;
  animation: sweep-y 2.2s ease-in-out infinite;
}

@keyframes sweep-y {
  0%, 100% { top: 20px; }
  50% { top: 180px; }
}

/* Secondary AOI Blue Scanner Sweep */
.laser-sweep.aoi-scanning {
  opacity: 1;
  background: linear-gradient(90deg, transparent, #3B82F6 30%, #3B82F6 70%, transparent);
  box-shadow: 0 0 15px #3B82F6;
  animation: sweep-y 1.4s ease-in-out infinite;
}

.route-svg {
  width: 100%;
  max-width: 420px;
  height: auto;
  display: block;
}

/* SMT Component Soldering Animation */
.smt-component {
  transition: fill 0.3s ease, stroke 0.3s ease, opacity 0.3s ease;
}

.smt-component.soldered {
  fill: var(--color-secondary) !important;
  stroke: var(--color-primary) !important;
  stroke-width: 1.5px;
  filter: drop-shadow(0 0 4px var(--color-secondary-glow));
}

.pcb-trace {
  stroke-dasharray: 10,6;
  transition: stroke 0.5s ease;
}

.pcb-trace.active-trace {
  stroke: var(--color-secondary) !important;
  animation: dashmove 0.8s linear infinite;
  opacity: 1;
}

@keyframes dashmove {
  to {
    stroke-dashoffset: -20;
  }
}

/* Telemetry Grid in Screen footer */
.screen-footer-telemetry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(0, 0, 0, 0.2);
}

.telemetry-stat-hud {
  padding: 16px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  font-family: 'Courier New', Courier, monospace;
}

.telemetry-stat-hud:nth-child(3),
.telemetry-stat-hud:nth-child(6) {
  border-right: none;
}

/* Row separation */
.telemetry-stat-hud:nth-child(-n+3) {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Mobile grid shift */
@media screen and (max-width: 580px) {
  .screen-footer-telemetry {
    grid-template-columns: repeat(2, 1fr);
  }
  .telemetry-stat-hud:nth-child(odd) {
    border-right: 1px solid rgba(255, 255, 255, 0.05);
  }
  .telemetry-stat-hud:nth-child(even) {
    border-right: none;
  }
  .telemetry-stat-hud:nth-child(-n+4) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
}

.telemetry-stat-hud p {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}

.telemetry-stat-hud h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  transition: var(--transition-smooth);
}

/* Custom telemetry value indicators */
.telemetry-stat-hud .cyan-val {
  color: var(--color-secondary);
  text-shadow: 0 0 5px rgba(var(--color-secondary-rgb), 0.3);
}

.telemetry-stat-hud .emerald-val {
  color: #10B981;
}

.telemetry-stat-hud .orange-val {
  color: #F59E0B;
  text-shadow: 0 0 5px rgba(245, 158, 11, 0.3);
}

.telemetry-stat-hud .blue-val {
  color: #3B82F6;
  text-shadow: 0 0 5px rgba(59, 130, 246, 0.3);
}
}

/* ==========================================
   RESPONSIVE DESIGN ADAPTATIONS
   ========================================== */
@media screen and (max-width: 1024px) {
  .hero-title { font-size: 46px; }
  .hero-grid { gap: 40px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-card { grid-template-columns: 1fr; gap: 40px; padding: 40px; }
}

@media screen and (max-width: 768px) {
  .nav-menu { display: none; }
  .mobile-nav-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-typing-wrap { justify-content: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-visual { order: -1; margin-bottom: 40px; }
  .avatar-halo-wrapper { width: 280px; height: 280px; }
  .timeline-wrapper::before { left: 24px; }
  .timeline-item { flex-direction: column !important; position: relative; padding-left: 56px; }
  .timeline-content-panel { width: 100%; padding: 20px; }
  .timeline-dot { left: 24px; transform: translate(-50%, 28px); }
  .timeline-item:hover .timeline-dot { transform: translate(-50%, 28px) scale(1.2); }
  .footer-grid { grid-template-columns: 1fr; }
}

@media screen and (max-width: 480px) {
  .hero-title { font-size: 34px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .btn-nav-cta { display: none; } /* Hide small CTA on phone navigations */
}