/* ==========================================================================
   NAZIR HOSSAIN - FRONTEND DEVELOPER PORTFOLIO STYLESHEET
   Pure CSS3 - Modern Glassmorphism & SaaS Blue Aesthetic
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS RESET & CUSTOM PROPERTIES (DESIGN TOKENS)
   -------------------------------------------------------------------------- */

:root {
  /* Brand Color Palette */
  --primary-blue: #2563EB;
  --dark-blue: #1E3A8A;
  --accent-blue: #60A5FA;
  --sky-blue: #38BDF8;
  --electric-blue: #1D4ED8;
  --white: #FFFFFF;

  /* Theme Defaults (Light Theme) */
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --border-color: rgba(226, 232, 240, 0.9);
  --border-glass: rgba(255, 255, 255, 0.6);
  --text-main: #1E293B;
  --text-secondary: #64748B;
  --text-muted: #94A3B8;

  /* Glassmorphism & Shadows */
  --glass-blur: blur(16px);
  --glass-shadow: 0 10px 30px -10px rgba(37, 99, 235, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --glass-shadow-hover: 0 20px 40px -15px rgba(37, 99, 235, 0.18), 0 8px 12px -3px rgba(15, 23, 42, 0.08);
  --modal-backdrop: rgba(15, 23, 42, 0.65);
  --glow-color: rgba(37, 99, 235, 0.15);

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-code: 'Fira Code', monospace;

  /* Transitions & Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --radius-full: 9999px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --header-height: 80px;
  --container-width: 1240px;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-primary: #0F172A;
  --bg-secondary: #1E293B;
  --bg-card: rgba(30, 41, 59, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.95);
  --border-color: rgba(51, 65, 85, 0.8);
  --border-glass: rgba(255, 255, 255, 0.08);
  --text-main: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --glass-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --glass-shadow-hover: 0 20px 40px -15px rgba(37, 99, 235, 0.25), 0 8px 12px -3px rgba(0, 0, 0, 0.4);
  --modal-backdrop: rgba(3, 7, 18, 0.85);
  --glow-color: rgba(59, 130, 246, 0.12);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

img, picture, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
}

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

/* Keyboard Accessible Focus Rings */
:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   2. REUSABLE UTILITIES & TYPOGRAPHY
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.section {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
  position: relative;
}

.text-center {
  text-align: center;
}

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

/* Section Header Structure */
.section-header {
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-subtitle {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-blue);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
  padding: 0.35rem 1rem;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-full);
}

[data-theme="dark"] .section-subtitle {
  background: rgba(96, 165, 250, 0.1);
  border-color: rgba(96, 165, 250, 0.25);
  color: var(--accent-blue);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw + 0.5rem, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-intro {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem);
}

/* Buttons System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #1D4ED8 100%);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1D4ED8 0%, var(--dark-blue) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border-color);
  backdrop-filter: var(--glass-blur);
}

.btn-outline:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.05);
  transform: translateY(-2px);
}

[data-theme="dark"] .btn-outline:hover {
  background: rgba(96, 165, 250, 0.1);
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

.btn-sm {
  padding: 0.5rem 1.15rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* Ambient Glow Orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  transition: opacity var(--transition-normal);
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.35) 0%, rgba(96, 165, 250, 0.05) 70%);
  top: 10%;
  left: -100px;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, rgba(37, 99, 235, 0.05) 70%);
  top: 40%;
  right: -150px;
  animation: floatOrb 22s ease-in-out infinite alternate-reverse;
}

/* --------------------------------------------------------------------------
   3. PRELOADER & SCROLL PROGRESS
   -------------------------------------------------------------------------- */

.preloader {
  position: fixed;
  inset: 0;
  background-color: var(--bg-primary);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader-content {
  text-align: center;
}

.preloader-spinner {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.5rem;
  border: 4px solid rgba(37, 99, 235, 0.15);
  border-top-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.preloader-logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
}

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

.preloader-text {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  letter-spacing: 1px;
}

.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
  z-index: 10000;
  transition: width 0.1s ease-out;
}

/* --------------------------------------------------------------------------
   4. A. STICKY NAVIGATION BAR
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  padding-block: 8px;
  z-index: 1000;
  background-color: transparent;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: none;
  box-shadow: none;
}

[data-theme="dark"] .site-header.scrolled {
  box-shadow: none;
}

/* /html/body/header/div: Navbar Container with Light Blue Background */
header > div,
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  background-color: #E0F2FE; /* Light Blue */
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding-inline: clamp(1.25rem, 3.5vw, 2.25rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(186, 230, 253, 0.9);
  box-shadow: 0 4px 20px -2px rgba(37, 99, 235, 0.12), 0 2px 6px -1px rgba(15, 23, 42, 0.05);
  transition: all var(--transition-normal);
}

.site-header.scrolled header > div,
.site-header.scrolled .nav-container {
  box-shadow: 0 10px 30px -5px rgba(37, 99, 235, 0.2), 0 4px 8px -2px rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] header > div,
[data-theme="dark"] .nav-container {
  background-color: rgba(30, 58, 138, 0.5); /* Subtle dark-mode light blue tint */
  border-color: rgba(96, 165, 250, 0.25);
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.4);
}

/* Brand Logo */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
  color: var(--white);
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 800;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.35);
}

.brand-name span {
  color: var(--primary-blue);
}

/* Nav Menu Links */
.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: #334155;
  padding: 0.4rem 0.2rem;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--primary-blue), var(--dark-blue));
  transition: width var(--transition-normal);
  border-radius: var(--radius-full);
}

.nav-link:hover,
.nav-link.active {
  color: var(--dark-blue);
  font-weight: 700;
}

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

[data-theme="dark"] .nav-link {
  color: #94A3B8;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  color: #93C5FD;
}

/* Nav Action Controls */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-main);
  transition: all var(--transition-fast);
  backdrop-filter: var(--glass-blur);
}

.theme-toggle-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  transform: rotate(15deg);
}

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

[data-theme="dark"] .theme-icon-dark {
  display: none;
}

[data-theme="dark"] .theme-icon-light {
  display: inline-block;
  color: #FBBF24;
}

.nav-cta-btn {
  display: none;
}

@media (min-width: 992px) {
  .nav-cta-btn {
    display: inline-flex;
  }
}

/* Hamburger Button */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 40px;
  height: 40px;
  padding: 11px 9px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  z-index: 1001;
  backdrop-filter: var(--glass-blur);
}

.hamburger-bar {
  display: block;
  width: 100%;
  height: 2.2px;
  background-color: var(--text-main);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.hamburger-btn.active .hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.hamburger-btn.active .hamburger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Nav Overlay & Drawer */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  z-index: 998;
  transition: all var(--transition-normal);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 991px) {
  .hamburger-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-glass);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
    padding: calc(var(--header-height) + 2rem) 2rem 2rem;
    z-index: 999;
    transition: right var(--transition-bounce);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    width: 100%;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    font-size: 1.15rem;
    font-weight: 600;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
  }
}

/* --------------------------------------------------------------------------
   5. B. HERO SECTION
   -------------------------------------------------------------------------- */

.hero-section {
  min-height: auto;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 1rem);
  padding-bottom: 0.5rem;
  padding-block-end: 0.5rem;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: clamp(3rem, 6vw, 5rem);
  position: relative;
  z-index: 1;
}

@media (min-width: 992px) {
  .hero-container {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

/* Hero Content */
.availability-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}

.badge-pulse {
  width: 9px;
  height: 9px;
  background-color: #10B981;
  border-radius: 50%;
  position: relative;
}

.badge-pulse::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.4);
  animation: pulse 1.8s infinite;
}

.badge-text {
  font-family: var(--font-code);
  font-size: 0.85rem;
  font-weight: 600;
  color: #059669;
}

[data-theme="dark"] .badge-text {
  color: #34D399;
}

.hero-greeting {
  font-family: var(--font-body);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 5vw + 0.5rem, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

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

.hero-description {
  font-size: clamp(1.05rem, 1.2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 2.25rem;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0;
}

.hero-social-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.social-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-link {
  width: 42px;
  height: 42px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
}

/* Hero Visual & Floating Badges */
.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.portrait-wrapper {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1 / 1.15;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px dashed rgba(37, 99, 235, 0.25);
  pointer-events: none;
}

.ring-outer {
  width: 110%;
  height: 110%;
  animation: rotateClockwise 40s linear infinite;
}

.ring-middle {
  width: 95%;
  height: 95%;
  border-style: dotted;
  animation: rotateCounterClockwise 30s linear infinite;
}

.portrait-card {
  position: relative;
  width: 88%;
  height: 88%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.25);
  border: 4px solid var(--border-glass);
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.1), rgba(96, 165, 250, 0.15));
}

.portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform var(--transition-normal);
}

.portrait-card:hover .portrait-img {
  transform: scale(1.04);
}

/* Floating Technology Badges */
.floating-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1rem;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  z-index: 2;
  transition: transform var(--transition-normal);
}

.floating-badge i {
  font-size: 1.6rem;
}

.badge-info {
  display: flex;
  flex-direction: column;
}

.badge-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.badge-sub {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* Badge Floating Placements & Keyframes */
.badge-js {
  top: 8%;
  left: -8%;
  animation: floatUpDown 5s ease-in-out infinite;
}

.badge-html {
  bottom: 12%;
  left: -5%;
  animation: floatUpDown 6s ease-in-out infinite 1s;
}

.badge-css {
  top: 15%;
  right: -8%;
  animation: floatUpDown 5.5s ease-in-out infinite 2s;
}

.badge-figma {
  bottom: 8%;
  right: -5%;
  animation: floatUpDown 6.5s ease-in-out infinite 1.5s;
}

@media (max-width: 575px) {
  .floating-badge {
    padding: 0.45rem 0.75rem;
  }
  .floating-badge i {
    font-size: 1.25rem;
  }
  .badge-sub {
    display: none;
  }
  .badge-js { left: 0; }
  .badge-css { right: 0; }
  .badge-html { left: 0; }
  .badge-figma { right: 0; }
}

/* --------------------------------------------------------------------------
   6. C. ABOUT ME SECTION
   -------------------------------------------------------------------------- */

.about-section {
  padding-top: 0.5rem;
  padding-block-start: 0.5rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

@media (min-width: 992px) {
  .about-grid {
    grid-template-columns: 0.95fr 1.05fr;
  }
}

.about-img-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--border-glass);
}

.about-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.about-img-box:hover .about-img {
  transform: scale(1.03);
}

.experience-card-badge {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.exp-number {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1;
}

.exp-text {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-main);
  max-width: 120px;
  line-height: 1.3;
}

.about-headline {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.about-text {
  color: var(--text-secondary);
  font-size: 1.025rem;
  margin-bottom: 1rem;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.highlight-item:hover {
  transform: translateX(6px);
  border-color: var(--primary-blue);
}

.highlight-item i {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-top: 0.2rem;
}

.highlight-item h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.highlight-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Statistics Counters Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-blue);
  box-shadow: var(--glass-shadow-hover);
}

.stat-icon-wrap {
  width: 52px;
  height: 52px;
  margin: 0 auto 1.25rem;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.stat-count {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

.stat-plus {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--primary-blue);
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   7. D. SKILLS & TECHNOLOGIES
   -------------------------------------------------------------------------- */

.skills-category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .skills-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-category-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
}

.skill-category-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-blue);
  box-shadow: var(--glass-shadow-hover);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.category-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(96, 165, 250, 0.2));
  color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.category-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
}

.category-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  border-color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.08);
  transform: translateY(-2px);
}

.skill-tag i {
  font-size: 1.15rem;
}

/* --------------------------------------------------------------------------
   8. E. SERVICES SECTION
   -------------------------------------------------------------------------- */

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--glass-shadow-hover);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon-box {
  width: 58px;
  height: 58px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.service-card:hover .service-icon-box {
  background: var(--primary-blue);
  color: var(--white);
  transform: scale(1.08) rotate(5deg);
}

.service-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
  color: var(--text-main);
}

.service-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.service-features li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.service-features li i {
  color: #10B981;
  font-size: 0.8rem;
}

/* --------------------------------------------------------------------------
   9. F. FEATURED PROJECTS SECTION & MODAL
   -------------------------------------------------------------------------- */

/* Filter Controls */
.project-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

@media (min-width: 640px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), opacity 0.3s ease;
}

.project-card.hidden {
  display: none !important;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--glass-shadow-hover);
}

.project-thumb-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--bg-secondary);
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.project-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.35rem 0.85rem;
  background: rgba(37, 99, 235, 0.85);
  backdrop-filter: blur(8px);
  color: var(--white);
  font-family: var(--font-code);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.project-body {
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-category-tag {
  font-family: var(--font-code);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-blue);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

[data-theme="dark"] .project-category-tag {
  color: var(--accent-blue);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.project-summary {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

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

.project-tech-tags span {
  font-family: var(--font-code);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: auto;
}

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

/* Project Modal Dialog */
.project-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.project-modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--modal-backdrop);
  backdrop-filter: blur(8px);
}

.modal-dialog {
  position: relative;
  width: min(720px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
  z-index: 1;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--transition-bounce);
}

.project-modal.active .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: rotate(90deg);
}

.modal-image-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--bg-primary);
}

.modal-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-body {
  padding: 2rem;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.modal-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.modal-tech-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.tech-box-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  display: block;
  margin-bottom: 0.25rem;
}

.modal-tech-text {
  font-family: var(--font-code);
  font-size: 0.9rem;
  color: var(--primary-blue);
}

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

/* --------------------------------------------------------------------------
   10. G. EXPERIENCE & EDUCATION (VERTICAL TIMELINE)
   -------------------------------------------------------------------------- */

.timeline-wrapper {
  position: relative;
  max-width: 900px;
  margin-inline: auto;
  padding-block: 2rem;
}

.timeline-track {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 3px;
  background: linear-gradient(180deg, var(--primary-blue), var(--accent-blue));
  border-radius: var(--radius-full);
}

@media (min-width: 768px) {
  .timeline-track {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  display: flex;
}

.timeline-dot {
  position: absolute;
  left: 4px;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  box-shadow: 0 0 0 6px var(--bg-primary), 0 4px 12px rgba(37, 99, 235, 0.4);
  z-index: 2;
}

.timeline-card {
  margin-left: 60px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--glass-shadow);
  width: 100%;
  transition: all var(--transition-normal);
}

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

@media (min-width: 768px) {
  .timeline-item {
    width: 50%;
  }

  .timeline-left {
    align-self: flex-start;
    padding-right: 45px;
  }

  .timeline-left .timeline-dot {
    left: auto;
    right: -18px;
  }

  .timeline-left .timeline-card {
    margin-left: 0;
  }

  .timeline-right {
    margin-left: auto;
    padding-left: 45px;
  }

  .timeline-right .timeline-dot {
    left: -18px;
  }

  .timeline-right .timeline-card {
    margin-left: 0;
  }
}

.timeline-date {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.1);
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.85rem;
}

[data-theme="dark"] .timeline-date {
  color: var(--accent-blue);
}

.timeline-role {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.timeline-company {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

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

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.timeline-tags span {
  font-size: 0.775rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   11. H. TESTIMONIALS SECTION & CAROUSEL (3 ITEMS AT ONCE)
   -------------------------------------------------------------------------- */

.testimonial-slider-wrap {
  max-width: 100%;
  margin-inline: auto;
  position: relative;
}

.testimonial-slider {
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding-block: 0.5rem;
}

.testimonial-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  cursor: grab;
}

.testimonial-track:active {
  cursor: grabbing;
}

.testimonial-slide {
  flex: 0 0 100%;
  min-width: 100%;
  padding: 0.75rem;
  user-select: none;
  display: flex;
}

@media (min-width: 640px) {
  .testimonial-slide {
    flex: 0 0 50%;
    min-width: 50%;
  }
}

@media (min-width: 992px) {
  .testimonial-slide {
    flex: 0 0 33.3333%;
    min-width: 33.3333%;
  }
}

.testimonial-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  box-shadow: var(--glass-shadow);
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: var(--glass-shadow-hover);
}

.testimonial-card::before {
  content: '“';
  position: absolute;
  top: 0.75rem;
  right: 1.25rem;
  font-family: Georgia, serif;
  font-size: 5rem;
  line-height: 1;
  color: rgba(37, 99, 235, 0.08);
  pointer-events: none;
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  margin-bottom: 1.25rem;
}

.client-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary-blue);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  flex-shrink: 0;
}

.client-meta {
  display: flex;
  flex-direction: column;
}

.client-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.client-designation {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.star-rating {
  color: #F59E0B;
  font-size: 0.8rem;
  display: flex;
  gap: 0.2rem;
}

.testimonial-quote {
  font-size: 0.95rem;
  font-style: italic;
  line-height: 1.65;
  color: var(--text-main);
  position: relative;
  z-index: 1;
  flex-grow: 1;
}

/* Slider Controls */
.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.slider-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: var(--glass-blur);
}

.slider-btn:hover {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
  transform: scale(1.08);
}

.slider-dots {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--border-color);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.slider-dot.active {
  width: 28px;
  background: var(--primary-blue);
}

/* --------------------------------------------------------------------------
   12. I. CONTACT SECTION & ACCESSIBLE FORM
   -------------------------------------------------------------------------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 5vw, 4rem);
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

.contact-info-col {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
}

.contact-card:hover {
  transform: translateX(6px);
  border-color: var(--primary-blue);
}

.contact-card-icon {
  width: 50px;
  height: 50px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.contact-card-body {
  display: flex;
  flex-direction: column;
}

.contact-card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.2rem;
}

.contact-card-link {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  transition: color var(--transition-fast);
}

.contact-card-link:hover {
  color: var(--primary-blue);
}

.contact-card-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

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

.social-box-heading {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

/* Contact Form Container */
.form-wrapper {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3rem);
  box-shadow: var(--glass-shadow);
}

.form-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
}

.form-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.35rem;
}

@media (min-width: 600px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

.required {
  color: #EF4444;
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
  transition: color var(--transition-fast);
}

.textarea-wrap .input-icon {
  top: 1.1rem;
}

.form-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.85rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-input:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
  background-color: var(--bg-secondary);
  outline: none;
}

.form-input:focus + .input-icon,
.input-wrap:focus-within .input-icon {
  color: var(--primary-blue);
}

.form-input.is-invalid {
  border-color: #EF4444 !important;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15) !important;
}

.form-error {
  font-size: 0.8rem;
  color: #EF4444;
  min-height: 1.1rem;
  transition: opacity var(--transition-fast);
}

/* Form Toast / Feedback Message */
.form-feedback {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.925rem;
  font-weight: 500;
  margin-top: 1rem;
  animation: slideDown 0.3s ease;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  color: #065F46;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

[data-theme="dark"] .form-feedback.success {
  background: rgba(16, 185, 129, 0.2);
  color: #6EE7B7;
}

.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  color: #991B1B;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

[data-theme="dark"] .form-feedback.error {
  background: rgba(239, 68, 68, 0.2);
  color: #FCA5A5;
}

/* --------------------------------------------------------------------------
   13. J. FOOTER
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: clamp(3.5rem, 6vw, 5rem);
  padding-bottom: 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
}

@media (min-width: 640px) {
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-top {
    grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
  }
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-bio {
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

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

.footer-nav-list a:hover {
  color: var(--primary-blue);
  padding-left: 4px;
}

.footer-connect-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.footer-bottom {
  padding-top: 2rem;
  text-align: center;
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   14. FLOATING BACK TO TOP BUTTON
   -------------------------------------------------------------------------- */

.back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  border: none;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 900;
}

.back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  background: var(--dark-blue);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.5);
}

/* --------------------------------------------------------------------------
   15. ANIMATIONS & SCROLL REVEALS
   -------------------------------------------------------------------------- */

/* Intersection Observer Scroll Reveal Initial States */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

[data-reveal="fade-up"] {
  transform: translateY(35px);
}

[data-reveal="fade-down"] {
  transform: translateY(-35px);
}

[data-reveal="fade-left"] {
  transform: translateX(40px);
}

[data-reveal="fade-right"] {
  transform: translateX(-40px);
}

[data-reveal="zoom-in"] {
  transform: scale(0.92);
}

/* Revealed State */
[data-reveal].revealed {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* Keyframe Animations */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(1); opacity: 0; }
}

@keyframes floatUpDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
  100% { transform: translate(-30px, 40px) scale(0.95); }
}

@keyframes rotateClockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotateCounterClockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   16. ACCESSIBILITY: PREFERS-REDUCED-MOTION
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .floating-badge,
  .glow-orb,
  .visual-ring {
    animation: none !important;
  }
}