/* ==========================================================================
   CSS DESIGN SYSTEM & GLOBAL CONFIGURATIONS
   ========================================================================== */

/* Variables Definition */
:root {
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  
  /* Transition durations */
  --transition-fast: 0.25s ease;
  --transition-medium: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Gradient Accents */
  --gradient-accent: linear-gradient(135deg, #FFD700 0%, #FF3F3F 100%);
  --gradient-accent-hover: linear-gradient(135deg, #FFEA00 0%, #FF5A5A 100%);
  --gradient-red: linear-gradient(135deg, #FF3F3F 0%, #B22222 100%);
  --gradient-yellow: linear-gradient(135deg, #FFEA00 0%, #FFA500 100%);
}

/* Dark Theme (Default) */
.dark-theme {
  --bg-primary: #0a0a0c;
  --bg-secondary: #111115;
  --bg-tertiary: #16161c;
  
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-inverse: #0a0a0c;
  
  --accent-color-red: #ff3f3f;
  --accent-color-yellow: #ffd700;
  
  --glass-bg: rgba(22, 22, 28, 0.55);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-border-focus: rgba(255, 63, 63, 0.35);
  --glass-shadow: rgba(0, 0, 0, 0.4);
  --glass-glow: rgba(255, 63, 63, 0.12);
  
  --input-bg: rgba(10, 10, 12, 0.6);
  --nav-bg: rgba(10, 10, 12, 0.75);
}

/* Light Theme (Toggled) */
.light-theme {
  --bg-primary: #f8f9fa;
  --bg-secondary: #f0f2f5;
  --bg-tertiary: #e9ecef;
  
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-inverse: #f5f5f7;
  
  --accent-color-red: #d32f2f;
  --accent-color-yellow: #f5b041;
  
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-border-focus: rgba(211, 47, 47, 0.4);
  --glass-shadow: rgba(0, 0, 0, 0.05);
  --glass-glow: rgba(211, 47, 47, 0.08);
  
  --input-bg: rgba(255, 255, 255, 0.8);
  --nav-bg: rgba(248, 249, 250, 0.8);
}

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

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

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

ul {
  list-style: none;
}

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

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gradient-accent-hover);
}

/* Selection */
::selection {
  background: var(--accent-color-red);
  color: var(--text-inverse);
}

/* ==========================================================================
   UTILITY CLASSES & DESIGN COMPONENT PATTERNS
   ========================================================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.grid {
  display: grid;
  gap: 32px;
}

.flex {
  display: flex;
  align-items: center;
}

/* Title Styling */
.section {
  padding: 100px 0;
}

.alt-bg {
  background-color: var(--bg-secondary);
  transition: background-color var(--transition-medium);
}

.section-title-wrapper {
  text-align: center;
  margin-bottom: 64px;
}

.subtitle-badge {
  font-family: var(--font-primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-color-yellow);
  background: rgba(255, 215, 0, 0.1);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 12px;
  border: 1px solid rgba(255, 215, 0, 0.2);
}

.section-title {
  font-family: var(--font-primary);
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.title-bar {
  width: 60px;
  height: 4px;
  background: var(--gradient-accent);
  margin: 16px auto 0;
  border-radius: var(--radius-full);
}

/* Gradient Text Effect */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-accent-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-highlight {
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-weight: 600;
}

/* Glassmorphism Card Style */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px 0 var(--glass-shadow);
  padding: 32px;
  transition: transform var(--transition-medium), border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.glass-card:hover {
  transform: translateY(-8px);
  border-color: var(--glass-border-focus);
  box-shadow: 0 12px 40px 0 var(--glass-glow), 0 8px 32px 0 var(--glass-shadow);
}

/* Button Classes */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  gap: 10px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 63, 63, 0.35);
}

.btn-primary:hover {
  background: var(--gradient-accent-hover);
  box-shadow: 0 6px 24px rgba(255, 63, 63, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--text-primary);
}

.btn-secondary:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.btn-small {
  padding: 10px 18px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-full {
  width: 100%;
}

/* Custom Cursor Glow */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 63, 63, 0.15) 0%, rgba(255, 215, 0, 0.05) 50%, rgba(0,0,0,0) 70%);
  border-radius: var(--radius-full);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease;
  mix-blend-mode: screen;
  display: none; /* Managed by JS to prevent flashes */
}

body:hover .cursor-glow {
  display: block;
}

/* Background canvas */
.particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  background-color: transparent;
}

/* Scroll Progress Bar */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0%;
  background: var(--gradient-accent);
  z-index: 1000;
  transition: width 0.05s ease-out;
}

/* ==========================================================================
   1. PRELOADER & HEADER/NAVIGATION
   ========================================================================== */

/* Preloader */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 99999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-content {
  text-align: center;
  position: relative;
}

.loader-ring {
  width: 100px;
  height: 100px;
  border: 3px solid rgba(255, 63, 63, 0.1);
  border-top-color: var(--accent-color-red);
  border-bottom-color: var(--accent-color-yellow);
  border-radius: var(--radius-full);
  animation: spin 1.5s infinite linear;
}

.loader-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-primary);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.loader-logo .logo-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loader-bar-container {
  width: 160px;
  height: 3px;
  background-color: rgba(255, 255, 255, 0.05);
  margin: 30px auto 10px;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.loader-bar {
  width: 0%;
  height: 100%;
  background: var(--gradient-accent);
  animation: loadingBar 2s ease-in-out forwards;
}

.loader-text {
  font-family: var(--font-secondary);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes loadingBar {
  0% { width: 0%; }
  100% { width: 100%; }
}

/* Header Nav */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: transparent;
  transition: background var(--transition-fast), padding var(--transition-fast), box-shadow var(--transition-fast);
  padding: 24px 0;
}

.header-nav.sticky {
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 16px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid var(--glass-border);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-primary);
  font-weight: 800;
  font-size: 1.35rem;
}

.logo-icon {
  background: var(--gradient-accent);
  color: #fff;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 1.15rem;
  font-weight: 900;
}

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

.nav-link {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

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

/* Active Link Glow Line */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-accent);
  transition: width var(--transition-fast);
  border-radius: var(--radius-full);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Theme Toggle Button styling */
.theme-toggle-btn {
  font-size: 1.2rem;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--glass-border-focus);
  color: var(--accent-color-red);
}

.sun-icon {
  display: none;
}

.light-theme .moon-icon {
  display: none;
}

.light-theme .sun-icon {
  display: block;
}

/* Hamburger menu button for mobile */
.mobile-toggle-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  cursor: pointer;
}

.hamburger-bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all 0.3s ease;
}

/* Hamburger active transformation */
.mobile-toggle-btn.active .hamburger-bar:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.mobile-toggle-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.mobile-toggle-btn.active .hamburger-bar:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ==========================================================================
   2. HERO SECTION
   ========================================================================== */

.hero-section {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 100px;
}

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

.hero-greeting {
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.hero-title {
  font-family: var(--font-primary);
  font-size: 4rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -2px;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-family: var(--font-primary);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
  height: 48px; /* Fixed height to prevent layouts shifting during typing */
}

.hero-description {
  font-family: var(--font-secondary);
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
}

/* Interactive typing effects */
.typed-text {
  font-weight: 700;
}

.typed-cursor {
  font-weight: 300;
  animation: blink 0.7s infinite;
  color: var(--accent-color-red);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Floating Tech Icons */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.float-icon {
  position: absolute;
  font-size: 2.2rem;
  color: var(--text-secondary);
  opacity: 0.15;
  filter: blur(0.5px);
  animation: floatAnim 6s infinite ease-in-out;
}

.light-theme .float-icon {
  opacity: 0.35;
}

.icon-1 { top: 20%; left: 10%; animation-delay: 0s; }
.icon-2 { top: 75%; left: 8%; animation-delay: 1.5s; font-size: 2.8rem; }
.icon-3 { top: 15%; left: 80%; animation-delay: 0.7s; }
.icon-4 { top: 70%; left: 45%; animation-delay: 2.2s; font-size: 2.5rem; }
.icon-5 { top: 35%; left: 50%; animation-delay: 1.1s; }
.icon-6 { top: 80%; left: 85%; animation-delay: 3s; }

@keyframes floatAnim {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(15deg); }
}

/* Hero Profile Image */
.hero-image-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-glow-wrapper {
  position: relative;
  width: 320px;
  height: 320px;
}

.profile-img-frame {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 4px solid var(--glass-border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  z-index: 3;
}

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

.image-glow-wrapper:hover .profile-img {
  transform: scale(1.08);
}

/* Glowing Backlight */
.profile-glow {
  position: absolute;
  width: 110%;
  height: 110%;
  top: -5%;
  left: -5%;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  filter: blur(24px);
  opacity: 0.4;
  z-index: 1;
  animation: pulseGlow 4s infinite alternate ease-in-out;
}

/* Rotating Ring border */
.profile-border-anim {
  position: absolute;
  width: 106%;
  height: 106%;
  top: -3%;
  left: -3%;
  border-radius: var(--radius-full);
  border: 2px dashed var(--accent-color-red);
  z-index: 2;
  animation: rotateRing 20s infinite linear;
}

/* Orbiting badges */
.orbit-badge {
  position: absolute;
  width: 50px;
  height: 50px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent-color-yellow);
  z-index: 4;
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
  animation: floatAnim 4s infinite alternate ease-in-out;
}

.badge-top-left {
  top: 10px;
  left: -10px;
  animation-delay: 0.5s;
}

.badge-bottom-right {
  bottom: 20px;
  right: -10px;
  color: var(--accent-color-red);
  animation-delay: 1.2s;
}

@keyframes pulseGlow {
  0% { opacity: 0.3; transform: scale(0.96); }
  100% { opacity: 0.55; transform: scale(1.04); }
}

@keyframes rotateRing {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Scroll down mouse animation */
.scroll-down-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 10;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.scroll-down-indicator:hover {
  opacity: 1;
}

.mouse-wheel {
  width: 26px;
  height: 42px;
  border: 2px solid var(--text-secondary);
  border-radius: var(--radius-full);
  position: relative;
}

.mouse-wheel::before {
  content: '';
  position: absolute;
  width: 4px;
  height: 8px;
  background-color: var(--accent-color-red);
  border-radius: var(--radius-full);
  left: 50%;
  transform: translateX(-50%);
  top: 8px;
  animation: scrollWheel 1.5s infinite;
}

.arrow-scroll-down {
  border: solid var(--text-secondary);
  border-width: 0 2px 2px 0;
  display: inline-block;
  padding: 4px;
  transform: rotate(45deg);
  animation: arrowBounce 1.5s infinite;
}

@keyframes scrollWheel {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 22px; }
}

@keyframes arrowBounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); }
  50% { transform: rotate(45deg) translate(4px, 4px); }
}

/* ==========================================================================
   3. ABOUT ME
   ========================================================================== */

.about-content {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: start;
}

.about-heading {
  font-size: 1.8rem;
  line-height: 1.35;
  margin-bottom: 20px;
}

.about-paragraph {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.personal-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 24px;
  margin-top: 36px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.info-item i {
  font-size: 1.25rem;
  color: var(--accent-color-red);
  margin-top: 4px;
}

.info-item div {
  font-size: 0.9rem;
}

.info-item strong {
  display: block;
  font-family: var(--font-primary);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.info-item span {
  color: var(--text-secondary);
}

/* Statistics cards */
.about-stats-grid {
  grid-template-columns: repeat(2, 1fr);
}

.stat-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stat-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  margin-bottom: 20px;
}

.red-gradient-bg {
  background: var(--gradient-red);
}

.yellow-gradient-bg {
  background: var(--gradient-yellow);
}

.stat-number {
  font-family: var(--font-primary);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1;
}

.stat-label {
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   4. EDUCATION & EXPERIENCE (TIMELINE LAYOUT)
   ========================================================================== */

.timeline-container {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background-color: var(--glass-border);
}

.timeline-item {
  position: relative;
  width: 50%;
  margin-bottom: 40px;
}

.timeline-left {
  left: 0;
  padding-right: 48px;
}

.timeline-right {
  left: 50%;
  padding-left: 48px;
}

.timeline-dot {
  position: absolute;
  top: 16px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  z-index: 5;
  box-shadow: 0 0 15px rgba(255, 63, 63, 0.2);
}

.timeline-left .timeline-dot {
  right: -22px;
}

.timeline-right .timeline-dot {
  left: -22px;
}

.timeline-card {
  position: relative;
}

.timeline-date {
  font-family: var(--font-primary);
  font-weight: 700;
  color: var(--accent-color-red);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.timeline-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-institution {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-university {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.timeline-description {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==========================================================================
   5. SKILLS SECTION
   ========================================================================== */

.skills-grid {
  grid-template-columns: repeat(2, 1fr);
}

.skills-category-card {
  display: flex;
  flex-direction: column;
}

.skills-category-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--glass-border);
}

.category-icon {
  font-size: 1.5rem;
  color: var(--accent-color-red);
}

.category-title {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  font-weight: 700;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.skill-item {
  width: 100%;
}

.skill-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 500;
}

.skill-name {
  color: var(--text-primary);
}

.skill-percent {
  color: var(--text-secondary);
}

.skill-bar-bg {
  width: 100%;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.light-theme .skill-bar-bg {
  background-color: rgba(0, 0, 0, 0.05);
}

.skill-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Span two columns layout */
.span-two-columns {
  grid-column: span 2;
}

.soft-skills-grid {
  grid-template-columns: repeat(4, 1fr);
}

.soft-skill-badge {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: all var(--transition-fast);
}

.soft-skill-badge:hover {
  border-color: var(--glass-border-focus);
  background: var(--glass-bg);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.soft-skill-badge i {
  font-size: 1.8rem;
  color: var(--accent-color-red);
}

.soft-skill-badge span {
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
}

/* ==========================================================================
   6. PROJECTS SECTION
   ========================================================================== */

.projects-grid {
  grid-template-columns: repeat(2, 1fr);
}

.project-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-img-wrapper {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-bottom: 1px solid var(--glass-border);
}

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

.project-card:hover .project-img {
  transform: scale(1.06) rotate(0.5deg);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 12, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity var(--transition-medium);
  z-index: 5;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-overlay-links {
  display: flex;
  gap: 16px;
  transform: translateY(20px);
  transition: transform var(--transition-medium);
}

.project-card:hover .project-overlay-links {
  transform: translateY(0);
}

.project-icon-link {
  width: 50px;
  height: 50px;
  background: var(--gradient-accent);
  color: #fff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(255, 63, 63, 0.35);
  transition: all var(--transition-fast);
}

.project-icon-link:hover {
  transform: scale(1.1);
  background: var(--gradient-accent-hover);
  box-shadow: 0 6px 20px rgba(255, 63, 63, 0.5);
}

.project-info {
  padding: 28px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-color-yellow);
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.15);
  padding: 4px 10px;
  border-radius: 4px;
}

.project-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.project-description {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.project-features-title {
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.project-features-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  margin-left: 4px;
}

.project-features-list li {
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-features-list li i {
  font-size: 0.65rem;
  color: var(--accent-color-red);
}

.project-actions {
  display: flex;
  gap: 12px;
  margin-top: auto;
}

.project-actions .btn {
  flex: 1;
}

/* ==========================================================================
   7. ACHIEVEMENTS SECTION
   ========================================================================== */

.achievements-grid {
  grid-template-columns: repeat(3, 1fr);
}

.achievement-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.achievement-icon-wrapper {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: #fff;
  margin-bottom: 24px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.achievement-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.achievement-rank {
  font-family: var(--font-primary);
  color: var(--accent-color-red);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 16px;
  display: block;
}

.achievement-description {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ==========================================================================
   8. SERVICES SECTION
   ========================================================================== */

.services-grid {
  grid-template-columns: repeat(3, 1fr);
}

/* Double width row layout logic */
.services-grid .service-card:nth-child(4),
.services-grid .service-card:nth-child(5) {
  grid-column: span 1.5; /* Centers the remaining items conceptually in responsive layouts */
}

/* Overriding grid layout to match exact count */
@media (min-width: 992px) {
  .services-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  .services-grid .service-card:nth-child(1),
  .services-grid .service-card:nth-child(2),
  .services-grid .service-card:nth-child(3) {
    grid-column: span 2;
  }
  .services-grid .service-card:nth-child(4) {
    grid-column: 2 / span 2;
  }
  .services-grid .service-card:nth-child(5) {
    grid-column: 4 / span 2;
  }
}

.service-card {
  display: flex;
  flex-direction: column;
}

.service-icon-box {
  width: 55px;
  height: 55px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 24px;
}

.service-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-description {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-details-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--glass-border);
  padding-top: 16px;
}

.service-details-list li {
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-details-list li i {
  font-size: 0.85rem;
  color: var(--accent-color-yellow);
}

/* ==========================================================================
   9. CONTACT SECTION
   ========================================================================== */

.contact-grid {
  grid-template-columns: 0.9fr 1.1fr;
  align-items: start;
}

.contact-heading {
  font-size: 1.8rem;
  line-height: 1.35;
  margin-bottom: 16px;
}

.contact-subtitle {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  margin-bottom: 36px;
}

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

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

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
}

.contact-info-item h4 {
  font-family: var(--font-primary);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 2px;
  letter-spacing: 0.5px;
}

.contact-link {
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.contact-link:hover {
  color: var(--accent-color-red);
}

.contact-link-static {
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.contact-socials h4 {
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.social-icon-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #fff;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.social-icon-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.github-bg { background-color: #24292e; }
.linkedin-bg { background-color: #0077b5; }

/* Contact Form Styling */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group-row {
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

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

.form-group label {
  font-family: var(--font-primary);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.input-wrapper {
  position: relative;
}

.input-wrapper input,
.input-wrapper textarea {
  width: 100%;
  background-color: var(--input-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 14px 16px 14px 44px;
  border-radius: var(--radius-sm);
  font-family: var(--font-secondary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.input-wrapper textarea {
  resize: vertical;
  padding: 14px 16px 14px 44px;
}

.input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 0.95rem;
  pointer-events: none;
  transition: color var(--transition-fast);
}

.text-area-icon {
  top: 24px;
}

.input-wrapper input:focus,
.input-wrapper textarea:focus {
  border-color: var(--glass-border-focus);
  background-color: var(--glass-bg);
  box-shadow: 0 0 10px var(--glass-glow);
}

.input-wrapper input:focus + .input-icon,
.input-wrapper textarea:focus + .input-icon {
  color: var(--accent-color-red);
}

/* Status message */
.form-status-message {
  font-family: var(--font-secondary);
  font-size: 0.9rem;
  text-align: center;
  margin-top: 10px;
  display: none;
}

.form-status-message.success {
  display: block;
  color: #2ecc71;
}

.form-status-message.error {
  display: block;
  color: #e74c3c;
}

/* ==========================================================================
   10. FOOTER & BACK TO TOP BUTTON
   ========================================================================== */

.footer-section {
  background-color: var(--bg-tertiary);
  padding: 80px 0 40px;
  border-top: 1px solid var(--glass-border);
  transition: background-color var(--transition-medium);
}

.footer-top {
  grid-template-columns: 2fr 1fr 1fr;
  align-items: start;
  gap: 60px;
}

.footer-desc {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-links h4 {
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-list a {
  font-family: var(--font-secondary);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-list a:hover {
  color: var(--accent-color-red);
  padding-left: 4px;
}

.footer-divider {
  width: 100%;
  height: 1px;
  background-color: var(--glass-border);
  margin: 48px 0 32px;
}

.footer-bottom {
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  font-family: var(--font-secondary);
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-heart {
  color: var(--accent-color-red);
  display: inline-block;
  animation: beat 0.8s infinite alternate ease-in-out;
}

@keyframes beat {
  0% { transform: scale(1); }
  100% { transform: scale(1.15); }
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.footer-socials a:hover {
  color: var(--accent-color-red);
  transform: translateY(-2px);
}

/* Scroll to top floating button */
.scroll-to-top-btn {
  position: fixed;
  bottom: -60px;
  right: 24px;
  width: 46px;
  height: 46px;
  background: var(--gradient-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 99;
  box-shadow: 0 4px 15px rgba(255, 63, 63, 0.3);
  transition: bottom 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform var(--transition-fast), background var(--transition-fast);
}

.scroll-to-top-btn.show {
  bottom: 24px;
}

.scroll-to-top-btn:hover {
  background: var(--gradient-accent-hover);
  transform: translateY(-4px);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS BASE CLASSES
   ========================================================================== */

/* Pre-animation states */
.scroll-reveal {
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up {
  transform: translateY(40px);
}

.zoom-in {
  transform: scale(0.9);
}

.slide-in-left {
  transform: translateX(-50px);
}

.slide-in-right {
  transform: translateX(50px);
}

/* Triggered animation active states */
.scroll-reveal.reveal-active {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */

/* Tablet viewports (less than 992px) */
@media (max-width: 991px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }
  
  .hero-data {
    order: 2;
  }
  
  .hero-image-container {
    order: 1;
  }
  
  .hero-description {
    margin: 0 auto 40px;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .timeline-line {
    left: 24px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 64px;
    padding-right: 0;
  }
  
  .timeline-right {
    left: 0;
  }
  
  .timeline-left .timeline-dot,
  .timeline-right .timeline-dot {
    left: 2px;
    right: auto;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .span-two-columns {
    grid-column: span 1;
  }
  
  .soft-skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .achievements-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid .service-card:nth-child(4),
  .services-grid .service-card:nth-child(5) {
    grid-column: span 1;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer-desc {
    max-width: 100%;
  }
}

/* Mobile viewports (less than 768px) */
@media (max-width: 767px) {
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.15rem;
    height: 60px;
  }
  
  .image-glow-wrapper {
    width: 250px;
    height: 250px;
  }
  
  .personal-info-grid {
    grid-template-columns: 1fr;
  }
  
  .about-stats-grid {
    grid-template-columns: 1fr;
  }
  
  .soft-skills-grid {
    grid-template-columns: 1fr;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .form-group-row {
    grid-template-columns: 1fr;
  }
  
  /* Mobile Menu Navigation */
  .mobile-toggle-btn {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 80px);
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--glass-border);
    padding: 40px 24px;
    box-shadow: -10px 10px 30px rgba(0,0,0,0.15);
    transition: right var(--transition-medium);
    z-index: 99;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-list {
    flex-direction: column;
    gap: 28px;
  }
  
  .nav-link {
    font-size: 1.1rem;
    display: block;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
}