/* ==========================================================================
   FLUTTER DEVELOPER PORTFOLIO - MASTER STYLESHEET
   Design Theme: App Store & Mobile OS Showcase (Bento Grid + 3D Mockups)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');
@import url('https://cdn.jsdelivr.net/gh/devicons/devicon@v2.15.1/devicon.min.css');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css');

/* --------------------------------------------------------------------------
   1. CORE CSS VARIABLES & THEME SYSTEM
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --color-flutter-blue: #027DFB;
  --color-flutter-blue-dark: #0156A6;
  --color-dart-cyan: #00D2FF;
  --color-accent-teal: #54C5F8;
  --color-accent-purple: #7C3AED;
  --color-accent-pink: #EC4899;

  /* Dark Theme (Default) */
  --bg-primary: #0B0F17;
  --bg-secondary: #111827;
  --bg-tertiary: #1E293B;
  --bg-card: rgba(30, 41, 59, 0.55);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(2, 125, 251, 0.4);

  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #64748B;
  --text-heading: #FFFFFF;

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(2, 125, 251, 0.25);
  --shadow-cyan-glow: 0 0 25px rgba(0, 210, 255, 0.25);

  --glass-bg: rgba(11, 15, 23, 0.85);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-blur: blur(16px);

  /* Device Frames */
  --phone-border: #1E293B;
  --phone-bg: #000000;

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

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #F1F5F9;
  --bg-tertiary: #E2E8F0;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFFFF;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(2, 125, 251, 0.5);

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-heading: #0F172A;

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 10px 30px rgba(2, 125, 251, 0.15);

  --glass-bg: rgba(255, 255, 255, 0.92);
  --glass-border: rgba(0, 0, 0, 0.1);

  --phone-border: #CBD5E1;
  --phone-bg: #1E293B;
}

/* --------------------------------------------------------------------------
   2. GLOBAL RESETS & BASE STYLES
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --------------------------------------------------------------------------
   3. CUTE FLUTTER MASCOT & APP PRELOADER
   -------------------------------------------------------------------------- */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at center, #0F172A 0%, #060911 100%);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease, transform 0.6s ease;
}

#preloader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(1.05);
}

.cute-loader-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.5rem;
  background: rgba(30, 41, 59, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 36px;
  backdrop-filter: blur(20px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), 0 0 40px rgba(2, 125, 251, 0.25);
  max-width: 380px;
  width: 90%;
}

.cute-mascot-wrapper {
  position: relative;
  width: 140px;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  animation: mascotFloat 3s infinite ease-in-out;
}

@keyframes mascotFloat {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(2deg); }
}

.flutter-wings {
  position: absolute;
  top: -10px;
  left: -20px;
  width: 180px;
  height: 180px;
  z-index: 1;
  animation: wingFlap 2.5s infinite ease-in-out;
}

@keyframes wingFlap {
  0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.7; }
  50% { transform: scale(1.1) rotate(-3deg); opacity: 1; filter: drop-shadow(0 0 15px rgba(0, 210, 255, 0.6)); }
}

.cute-phone-body {
  width: 100px;
  height: 175px;
  background: linear-gradient(145deg, #1E293B, #0F172A);
  border: 4px solid var(--color-flutter-blue);
  border-radius: 28px;
  position: relative;
  z-index: 2;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), 0 0 20px rgba(2, 125, 251, 0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 14px;
  overflow: hidden;
}

.cute-phone-notch {
  width: 34px;
  height: 6px;
  background: var(--color-flutter-blue);
  border-radius: 4px;
  margin-bottom: 12px;
}

.cute-face {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  margin-bottom: 10px;
}

.cute-eyes {
  display: flex;
  gap: 16px;
  margin-bottom: 4px;
}

.eye {
  width: 10px;
  height: 10px;
  background: #FFFFFF;
  border-radius: 50%;
  position: relative;
  animation: eyeBlink 3.2s infinite ease-in-out;
}

.eye::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 3px;
  height: 3px;
  background: var(--color-flutter-blue);
  border-radius: 50%;
}

@keyframes eyeBlink {
  0%, 94%, 100% { transform: scaleY(1); }
  97% { transform: scaleY(0.1); }
}

.cute-blush {
  position: absolute;
  top: 6px;
  width: 8px;
  height: 5px;
  background: #EC4899;
  border-radius: 50%;
  opacity: 0.7;
}

.left-blush { left: -6px; }
.right-blush { right: -6px; }

.cute-mouth {
  width: 8px;
  height: 4px;
  border-bottom: 2px solid #FFFFFF;
  border-radius: 0 0 6px 6px;
}

.mini-widgets-container {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.mini-widget {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #FFF;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  animation: widgetPop 1.8s infinite cubic-bezier(0.34, 1.56, 0.64, 1);
}

.mini-widget.w1 { background: linear-gradient(135deg, #027DFB, #00D2FF); animation-delay: 0s; }
.mini-widget.w2 { background: linear-gradient(135deg, #EC4899, #7C3AED); animation-delay: 0.3s; }
.mini-widget.w3 { background: linear-gradient(135deg, #10B981, #059669); animation-delay: 0.6s; }

@keyframes widgetPop {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-6px) scale(1.15); }
}

.cute-loader-text-wrapper {
  margin-bottom: 1.2rem;
}

.cute-loader-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 0.3rem;
  letter-spacing: 0.5px;
}

.cute-loader-subtitle {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-dart-cyan);
  transition: opacity 0.3s ease;
}

.cute-progress-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.cute-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-flutter-blue), var(--color-dart-cyan), var(--color-accent-teal));
  border-radius: 20px;
  box-shadow: 0 0 12px var(--color-dart-cyan);
  animation: progressFill 1.8s ease-in-out forwards;
}

@keyframes progressFill {
  0% { width: 5%; }
  50% { width: 65%; }
  100% { width: 100%; }
}

/* --------------------------------------------------------------------------
   4. NAVIGATION & HEADER
   -------------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.1rem 0;
  transition: all var(--transition-normal);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
  padding: 0.75rem 0;
  box-shadow: var(--shadow-md);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-heading);
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-flutter-blue), var(--color-dart-cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-size: 1.1rem;
  box-shadow: var(--shadow-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-flutter-blue), var(--color-dart-cyan));
  transition: width var(--transition-fast);
  border-radius: 2px;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--color-flutter-blue);
  color: var(--color-flutter-blue);
  box-shadow: var(--shadow-glow);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  font-size: 1.4rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: all var(--transition-normal);
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-nav-links {
  list-style: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   5. BUTTONS & UI UTILITIES
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-flutter-blue), var(--color-flutter-blue-dark));
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(2, 125, 251, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--color-flutter-blue);
  color: var(--color-flutter-blue);
  transform: translateY(-2px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-flutter {
  background: rgba(2, 125, 251, 0.12);
  color: var(--color-flutter-blue);
  border: 1px solid rgba(2, 125, 251, 0.25);
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-flutter-blue), var(--color-dart-cyan), var(--color-accent-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-padding {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

.section-subtitle {
  font-family: var(--font-mono);
  color: var(--color-flutter-blue);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.section-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  min-height: 100vh;
  padding-top: 8rem;
  padding-bottom: 4rem;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: blobFloat 8s infinite alternate ease-in-out;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: var(--color-flutter-blue);
  top: -100px;
  right: -50px;
}

.blob-2 {
  width: 350px;
  height: 350px;
  background: var(--color-dart-cyan);
  bottom: -50px;
  left: -50px;
  animation-delay: -4s;
}

@keyframes blobFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 40px) scale(1.1); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-status-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 10px #10B981;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  letter-spacing: -1px;
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat-item h4 {
  font-size: 1.75rem;
  color: var(--color-flutter-blue);
  margin-bottom: 0.2rem;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mockup-frame {
  width: 290px;
  height: 580px;
  background: var(--phone-bg);
  border: 8px solid var(--phone-border);
  border-radius: 44px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), var(--shadow-glow);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.phone-mockup-frame:hover {
  transform: translateY(-8px) rotateX(4deg) rotateY(-4deg);
  box-shadow: 0 35px 60px -15px rgba(2, 125, 251, 0.35);
}

.phone-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 20px;
  background: #000000;
  border-radius: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.notch-camera {
  width: 8px;
  height: 8px;
  background: #1E293B;
  border-radius: 50%;
}

.phone-screen {
  width: 100%;
  height: 100%;
  padding-top: 40px;
  background: linear-gradient(180deg, #0F172A 0%, #020617 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* --------------------------------------------------------------------------
   7. ABOUT ME & TIMELINE SECTION
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 3rem;
  align-items: center;
}

.about-avatar-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.avatar-wrapper {
  width: 180px;
  height: 180px;
  margin: 0 auto 1.5rem auto;
  border-radius: 50%;
  padding: 6px;
  background: linear-gradient(135deg, var(--color-flutter-blue), var(--color-dart-cyan));
  box-shadow: var(--shadow-glow);
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-secondary);
}

.about-content h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.about-bio {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.timeline-title {
  font-size: 1.2rem;
  margin-bottom: 1.2rem;
  color: var(--color-flutter-blue);
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: relative;
  padding-left: 1.5rem;
}

.timeline-list::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 6px;
  width: 2px;
  height: 85%;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-flutter-blue);
  box-shadow: 0 0 10px var(--color-flutter-blue);
}

.timeline-item h4 {
  font-size: 1rem;
  font-weight: 600;
}

.timeline-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. TECH STACK BENTO GRID SECTION (COMPACT CARD PROPORTIONS)
   -------------------------------------------------------------------------- */
.skill-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.skill-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.4rem;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.skill-filter-btn i {
  font-size: 1rem;
  color: var(--color-flutter-blue);
}

.skill-filter-btn:hover, .skill-filter-btn.active {
  background: var(--bg-card-hover);
  border-color: var(--color-flutter-blue);
  color: var(--color-flutter-blue);
  box-shadow: 0 0 20px rgba(2, 125, 251, 0.25);
  transform: translateY(-2px);
}

.bento-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.skill-card-clean {
  background: var(--bg-card);
  border-radius: 28px;
  padding: 2rem;
  backdrop-filter: blur(16px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 380px;
  flex: 1 1 340px;
}

.skill-card-clean:hover {
  transform: translateY(-8px);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-bottom: 1.8rem;
}

.skill-header-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.skill-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 0.2rem;
}

.skill-accent-bar {
  width: 32px;
  height: 3px;
  border-radius: 2px;
}

/* Skill Pill List */
.skill-pill-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skill-pill-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.skill-pill-item:hover {
  border-color: var(--color-flutter-blue);
  transform: translateX(4px);
  background: var(--bg-tertiary);
}

.skill-pill-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.skill-brand-icon {
  font-size: 1.3rem;
}

.skill-pill-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-pill-perc {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   ALWAYS-ON AMBIENT COLOR GLOW SHADOWS (SIGNATURE DESIGN)
   -------------------------------------------------------------------------- */
.cat-mobile {
  border: 1px solid rgba(2, 125, 251, 0.3);
  box-shadow: 0 12px 35px -5px rgba(2, 125, 251, 0.22), 0 4px 15px rgba(0, 0, 0, 0.04);
}
.cat-mobile .skill-header-icon-box {
  background: rgba(2, 125, 251, 0.12);
  color: #027DFB;
  box-shadow: 0 4px 15px rgba(2, 125, 251, 0.3);
}
.cat-mobile .skill-accent-bar { background: #027DFB; }
.cat-mobile .skill-pill-perc { color: #027DFB; }
.cat-mobile:hover {
  border-color: rgba(2, 125, 251, 0.65);
  box-shadow: 0 20px 45px rgba(2, 125, 251, 0.38), 0 8px 25px rgba(0, 0, 0, 0.08);
}

.cat-frontend {
  border: 1px solid rgba(124, 58, 237, 0.3);
  box-shadow: 0 12px 35px -5px rgba(124, 58, 237, 0.22), 0 4px 15px rgba(0, 0, 0, 0.04);
}
.cat-frontend .skill-header-icon-box {
  background: rgba(124, 58, 237, 0.12);
  color: #7C3AED;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}
.cat-frontend .skill-accent-bar { background: #7C3AED; }
.cat-frontend .skill-pill-perc { color: #7C3AED; }
.cat-frontend:hover {
  border-color: rgba(124, 58, 237, 0.65);
  box-shadow: 0 20px 45px rgba(124, 58, 237, 0.38), 0 8px 25px rgba(0, 0, 0, 0.08);
}

.cat-backend {
  border: 1px solid rgba(16, 185, 129, 0.3);
  box-shadow: 0 12px 35px -5px rgba(16, 185, 129, 0.22), 0 4px 15px rgba(0, 0, 0, 0.04);
}
.cat-backend .skill-header-icon-box {
  background: rgba(16, 185, 129, 0.12);
  color: #10B981;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}
.cat-backend .skill-accent-bar { background: #10B981; }
.cat-backend .skill-pill-perc { color: #10B981; }
.cat-backend:hover {
  border-color: rgba(16, 185, 129, 0.65);
  box-shadow: 0 20px 45px rgba(16, 185, 129, 0.38), 0 8px 25px rgba(0, 0, 0, 0.08);
}

.cat-database {
  border: 1px solid rgba(249, 115, 22, 0.3);
  box-shadow: 0 12px 35px -5px rgba(249, 115, 22, 0.22), 0 4px 15px rgba(0, 0, 0, 0.04);
}
.cat-database .skill-header-icon-box {
  background: rgba(249, 115, 22, 0.12);
  color: #F97316;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}
.cat-database .skill-accent-bar { background: #F97316; }
.cat-database .skill-pill-perc { color: #F97316; }
.cat-database:hover {
  border-color: rgba(249, 115, 22, 0.65);
  box-shadow: 0 20px 45px rgba(249, 115, 22, 0.38), 0 8px 25px rgba(0, 0, 0, 0.08);
}

.cat-tools {
  border: 1px solid rgba(0, 210, 255, 0.3);
  box-shadow: 0 12px 35px -5px rgba(0, 210, 255, 0.22), 0 4px 15px rgba(0, 0, 0, 0.04);
}
.cat-tools .skill-header-icon-box {
  background: rgba(0, 210, 255, 0.12);
  color: #00D2FF;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}
.cat-tools .skill-accent-bar { background: #00D2FF; }
.cat-tools .skill-pill-perc { color: #00D2FF; }
.cat-tools:hover {
  border-color: rgba(0, 210, 255, 0.65);
  box-shadow: 0 20px 45px rgba(0, 210, 255, 0.38), 0 8px 25px rgba(0, 0, 0, 0.08);
}

/* --------------------------------------------------------------------------
   9. FLAGSHIP APP SHOWCASE & INTERACTIVE SWITCHER (AWWARDS LEVEL DESIGN)
   -------------------------------------------------------------------------- */
.flagship-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.flagship-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.flagship-filter-btn i {
  color: var(--color-flutter-blue);
}

.flagship-filter-btn:hover, .flagship-filter-btn.active {
  background: var(--bg-card-hover);
  border-color: var(--color-flutter-blue);
  color: var(--color-flutter-blue);
  box-shadow: 0 0 20px rgba(2, 125, 251, 0.22);
}

/* Master Glassmorphism Container Card */
.flagship-showcase-card {
  display: grid;
  grid-template-columns: 240px 1.2fr 0.95fr;
  gap: 2.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 36px;
  padding: 2.2rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg), 0 20px 50px rgba(0, 0, 0, 0.15);
  align-items: center;
}

/* Column 1: Phone Mockup Frame */
.showcase-col-phone {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-display-frame {
  width: 220px;
  height: 450px;
  background: #000000;
  border: 8px solid var(--phone-border);
  border-radius: 36px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4), 0 0 30px rgba(2, 125, 251, 0.25);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.phone-display-frame:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 25px 55px rgba(0, 0, 0, 0.5), 0 0 40px rgba(2, 125, 251, 0.35);
}

.phone-dynamic-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 75px;
  height: 18px;
  background: #000000;
  border-radius: 10px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.phone-lens {
  width: 6px;
  height: 6px;
  background: #1E293B;
  border-radius: 50%;
}

.phone-speaker {
  width: 20px;
  height: 3px;
  background: #1E293B;
  border-radius: 2px;
}

.phone-display-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.phone-screen-glare {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 50%);
  pointer-events: none;
}

/* Column 2: App Specs & Details */
.showcase-col-details {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.app-details-header {
  margin-bottom: 1rem;
}

.app-badges-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.app-role-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 30px;
  background: rgba(2, 125, 251, 0.12);
  border: 1px solid rgba(2, 125, 251, 0.3);
  color: var(--color-flutter-blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.app-platform-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 30px;
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.25);
  color: var(--color-dart-cyan);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.app-detail-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.25;
}

.app-detail-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.4rem;
}

/* Tech Chips */
.app-tech-section {
  margin-bottom: 1.6rem;
}

.tech-section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.app-tech-chips-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-chip-pill {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.tech-chip-pill:hover {
  border-color: var(--color-flutter-blue);
  color: var(--color-flutter-blue);
  transform: translateY(-2px);
}

/* App Action Buttons Row */
.app-actions-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.app-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.app-btn-play {
  background: linear-gradient(135deg, var(--color-flutter-blue), var(--color-flutter-blue-dark));
  color: #FFFFFF;
  box-shadow: 0 4px 15px rgba(2, 125, 251, 0.3);
}

.app-btn-play:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(2, 125, 251, 0.45);
}

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

.app-btn-appstore:hover {
  border-color: var(--text-heading);
  transform: translateY(-2px);
}

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

.app-btn-secondary:hover {
  border-color: var(--color-flutter-blue);
  color: var(--color-flutter-blue);
  transform: translateY(-2px);
}

.app-btn-accent {
  background: rgba(0, 210, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: var(--color-dart-cyan);
}

.app-btn-accent:hover {
  background: rgba(0, 210, 255, 0.25);
  transform: translateY(-2px);
}

/* Column 3: Sidebar App Switcher */
.showcase-col-sidebar {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 480px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 1.2rem;
  overflow: hidden;
}

.sidebar-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.85rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-header-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-header-title i {
  color: var(--color-flutter-blue);
}

.sidebar-arrow-controls {
  display: flex;
  gap: 0.4rem;
}

.sidebar-nav-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

.sidebar-nav-btn:hover {
  background: var(--color-flutter-blue);
  color: #FFF;
  border-color: var(--color-flutter-blue);
}

.sidebar-app-scroll-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  overflow-y: auto;
  padding: 0.2rem 0.3rem 0.2rem 0.1rem;
  scroll-behavior: smooth;
}

.sidebar-app-scroll-list::-webkit-scrollbar {
  width: 5px;
}
.sidebar-app-scroll-list::-webkit-scrollbar-thumb {
  background: rgba(2, 125, 251, 0.3);
  border-radius: 4px;
}

.sidebar-app-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0.9rem;
  border-radius: 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 68px;
}

.sidebar-app-card:hover {
  border-color: rgba(2, 125, 251, 0.4);
  transform: translateX(4px);
  background: var(--bg-tertiary);
}

.sidebar-app-card.active {
  background: var(--bg-card);
  border-color: var(--color-flutter-blue);
  box-shadow: 0 4px 20px rgba(2, 125, 251, 0.22);
}

.app-card-thumb {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border-color);
}

.app-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-card-meta {
  flex: 1;
  min-width: 0;
}

.app-card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.15rem;
}

.app-card-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-heading);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-card-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
}

.app-card-subtitle {
  font-size: 0.76rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-card-active-indicator {
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-flutter-blue), var(--color-dart-cyan));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.sidebar-app-card.active .app-card-active-indicator {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   10. SUB PROJECTS BENTO GRID
   -------------------------------------------------------------------------- */
.sub-projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.sub-project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.sub-project-card:hover {
  border-color: var(--color-flutter-blue);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.sub-project-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.sub-project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}

/* --------------------------------------------------------------------------
   11. LINKS & SOCIAL CONNECT SECTION
   -------------------------------------------------------------------------- */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
}

.social-link-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.social-link-card:hover {
  background: rgba(2, 125, 251, 0.12);
  border-color: var(--color-flutter-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.social-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-flutter-blue);
}

.social-info h4 {
  font-size: 1rem;
}

.social-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   12. CONTACT FORM & TOASTS
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2.2rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--color-flutter-blue);
  box-shadow: 0 0 0 3px rgba(2, 125, 251, 0.2);
}

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

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.toast {
  padding: 1rem 1.5rem;
  border-radius: 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--color-flutter-blue);
  color: #FFF;
  font-size: 0.95rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  animation: slideInRight 0.4s ease forwards;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --------------------------------------------------------------------------
   13. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  background: var(--bg-primary);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.back-to-top-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--color-flutter-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-to-top-btn:hover {
  background: var(--color-flutter-blue);
  color: #FFF;
  transform: translateY(-4px);
}

/* --------------------------------------------------------------------------
   14. RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .flagship-showcase-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 992px) {
  .hero-grid, .about-grid, .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.75rem;
  }

  .nav-links {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
  }

  .phone-mockup-frame {
    width: 260px;
    height: 520px;
  }
}