/* ========================================
   DESIGN SYSTEM - Portfolio Website
   ======================================== */

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

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
  /* Color Palette - HSL for easy manipulation */
  --color-primary: 270 80% 60%;
  --color-secondary: 190 80% 50%;
  --color-accent: 320 80% 60%;

  /* Background Colors */
  --color-bg-primary: 240 15% 8%;
  --color-bg-secondary: 240 12% 12%;
  --color-bg-tertiary: 240 10% 16%;

  /* Text Colors */
  --color-text-primary: 0 0% 95%;
  --color-text-secondary: 0 0% 70%;
  --color-text-muted: 0 0% 50%;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg,
      hsl(var(--color-primary)) 0%,
      hsl(var(--color-secondary)) 100%);
  --gradient-accent: linear-gradient(135deg,
      hsl(var(--color-primary)) 0%,
      hsl(var(--color-accent)) 100%);
  --gradient-background: linear-gradient(180deg,
      hsl(var(--color-bg-primary)) 0%,
      hsl(var(--color-bg-secondary)) 100%);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Typography */
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 4rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px hsla(var(--color-primary), 0.5);
  --shadow-glow-accent: 0 0 30px hsla(var(--color-accent), 0.6);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(10px);
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: hsl(var(--color-text-primary));
  background: hsl(var(--color-bg-primary));
  overflow-x: hidden;
  min-height: 100vh;
}

/* ========================================
   Typography
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-6xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
}

h3 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
}

h4 {
  font-size: var(--font-size-2xl);
}

p {
  margin-bottom: var(--spacing-md);
  color: hsl(var(--color-text-secondary));
}

a {
  color: hsl(var(--color-primary));
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: hsl(var(--color-secondary));
}

/* ========================================
   Layout Components
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--spacing-md) 0;
  transition: all var(--transition-base);
}

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

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

.logo {
  display: flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

.logo-image {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid hsl(var(--color-primary));
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-base);
}

.logo-image:hover {
  border-color: hsl(var(--color-secondary));
  box-shadow: 0 4px 12px hsla(var(--color-primary), 0.5);
  transform: scale(1.1);
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: hsl(var(--color-text-primary));
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: hsl(var(--color-text-primary));
  font-size: var(--font-size-2xl);
  cursor: pointer;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .nav-links.active {
    transform: translateX(0);
  }
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-align: center;
  font-family: var(--font-body);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  color: hsl(var(--color-text-primary));
  border: 2px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.btn-outline:hover {
  background: var(--glass-bg);
  border-color: hsl(var(--color-primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ========================================
   Cards
   ======================================== */

.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: hsl(var(--color-primary) / 0.5);
}

.card:hover::before {
  opacity: 0.1;
}

/* ========================================
   Project Card
   ======================================== */

.project-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: hsl(var(--color-primary) / 0.5);
}

.project-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-image {
  transform: scale(1.1);
}

.project-content {
  padding: var(--spacing-lg);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: hsl(var(--color-text-primary));
}

.project-description {
  font-size: var(--font-size-base);
  color: hsl(var(--color-text-secondary));
  margin-bottom: var(--spacing-md);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: hsl(var(--color-primary) / 0.2);
  color: hsl(var(--color-primary));
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border: 1px solid hsl(var(--color-primary) / 0.3);
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
}

.project-links .btn {
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-md);
}

/* ========================================
   Grid System
   ======================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-background);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle,
      hsl(var(--color-primary) / 0.15) 0%,
      transparent 50%);
  animation: rotate 20s linear infinite;
}

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

  to {
    transform: rotate(360deg);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: var(--spacing-xl);
}

/* Profile Photo Styling */
.profile-photo-container {
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease-out;
}

.profile-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid transparent;
  background: linear-gradient(white, white) padding-box,
    var(--gradient-primary) border-box;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5),
    0 0 40px hsla(var(--color-primary), 0.4);
  transition: all var(--transition-base);
  animation: photoFadeIn 1.2s ease-out;
}

.profile-photo:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6),
    0 0 50px hsla(var(--color-primary), 0.6);
}

@keyframes photoFadeIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.hero h1 {
  font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease-out 0.3s backwards;
}

.hero p {
  font-size: var(--font-size-xl);
  color: hsl(var(--color-text-secondary));
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.5s backwards;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.7s backwards;
}

/* Responsive Profile Photo */
@media (max-width: 768px) {
  .profile-photo {
    width: 160px;
    height: 160px;
  }
}

@media (max-width: 480px) {
  .profile-photo {
    width: 140px;
    height: 140px;
  }
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow);
}

.fade-in-up {
  animation: fadeInUp var(--transition-slow);
}

/* Scroll Animation Classes */
.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all var(--transition-slow);
}

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

/* ========================================
   Utilities
   ======================================== */

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

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

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}

.mt-4 {
  margin-top: var(--spacing-xl);
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}

.mb-4 {
  margin-bottom: var(--spacing-xl);
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

/* ========================================
   Skills Section
   ======================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.skill-item {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-base);
  min-height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.skill-item h4 {
  margin: var(--spacing-xs) 0;
  font-size: var(--font-size-lg);
  word-wrap: break-word;
  overflow-wrap: break-word;
  width: 100%;
}

.skill-item p {
  font-size: var(--font-size-sm);
  margin: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
  width: 100%;
  line-height: 1.4;
}

.skill-item:hover {
  transform: translateY(-5px);
  border-color: hsl(var(--color-primary) / 0.5);
  box-shadow: var(--shadow-lg);
}

.skill-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
  flex-shrink: 0;
}

/* ========================================
   Footer
   ======================================== */

footer {
  background: hsl(var(--color-bg-secondary));
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: hsl(var(--color-text-primary));
  font-size: var(--font-size-xl);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

/* ========================================
   Responsive Design - All Devices
   ======================================== */

/* Extra Small Devices (Small Phones: < 480px) */
@media (max-width: 479px) {
  :root {
    --font-size-6xl: 2rem;
    --font-size-5xl: 1.75rem;
    --font-size-4xl: 1.5rem;
    --font-size-3xl: 1.25rem;
    --spacing-3xl: 3rem;
    --spacing-2xl: 2.5rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

  .project-image {
    height: 180px;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-sm);
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .project-links {
    flex-direction: column;
  }

  .project-links .btn {
    width: 100%;
  }

  .nav-container {
    padding: 0 var(--spacing-sm);
  }
}

/* Small Devices (Phones: 480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .project-image {
    height: 200px;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Medium Devices (Tablets: 768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
  :root {
    --font-size-6xl: 3rem;
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
  }

  .container {
    max-width: 720px;
    padding: 0 var(--spacing-lg);
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .project-image {
    height: 220px;
  }

  .nav-links {
    gap: var(--spacing-md);
  }
}

/* Large Tablets & iPads (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
  .container {
    max-width: 960px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .project-image {
    height: 240px;
  }
}

/* Laptops & Small Desktops (1200px - 1399px) */
@media (min-width: 1200px) and (max-width: 1399px) {
  .container {
    max-width: 1140px;
  }

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

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

/* Large Desktops & MacBooks (1400px - 1919px) */
@media (min-width: 1400px) and (max-width: 1919px) {
  .container {
    max-width: 1320px;
  }

  :root {
    --font-size-6xl: 4.5rem;
    --spacing-3xl: 7rem;
  }
}

/* Extra Large Displays (≥ 1920px) */
@media (min-width: 1920px) {
  .container {
    max-width: 1600px;
  }

  :root {
    --font-size-6xl: 5rem;
    --font-size-5xl: 3.5rem;
    --spacing-3xl: 8rem;
  }
}

/* Mobile Navigation (All Small Screens) */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: hsl(var(--color-bg-secondary));
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    border-top: 1px solid var(--glass-border);
    box-shadow: var(--shadow-xl);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: var(--spacing-sm);
    text-align: center;
    border-radius: var(--radius-md);
  }

  .nav-links a:hover {
    background: var(--glass-bg);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
  }
}

/* Landscape Mode (Phones & Small Tablets) */
@media (max-height: 600px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: var(--spacing-3xl) 0;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .hero h1 {
    font-size: var(--font-size-4xl);
  }
}

/* Print Styles */
@media print {

  .navbar,
  .mobile-menu-toggle,
  .language-switcher,
  .hero-buttons,
  .project-links,
  .social-links,
  footer {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .card,
  .project-card {
    border: 1px solid #ccc;
    box-shadow: none;
    page-break-inside: avoid;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
  .project-image {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Dark Mode Support (If user prefers) */
@media (prefers-color-scheme: light) {
  /* Optional: Add light mode styles if needed */
}

/* Reduced Motion Support (Accessibility) */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .scroll-reveal {
    opacity: 1;
    transform: none;
  }

  .hero::before {
    animation: none;
  }
}

/* Language Switcher */
.language-switcher {
  position: relative;
  display: inline-block;
  margin-left: auto;
  margin-right: var(--spacing-lg);
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: hsl(var(--color-text-primary));
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-body);
}

.lang-btn:hover {
  background: var(--glass-border);
  border-color: hsl(var(--color-primary));
  transform: translateY(-2px);
}

.lang-arrow {
  font-size: 0.7rem;
  transition: transform var(--transition-base);
}

.lang-btn.active .lang-arrow {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: 1000;
  overflow: hidden;
}

.lang-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  color: hsl(var(--color-text-primary));
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.lang-option:last-child {
  border-bottom: none;
}

.lang-option:hover {
  background: hsl(var(--color-primary) / 0.2);
  color: hsl(var(--color-primary));
  padding-left: calc(var(--spacing-md) + 4px);
}

.lang-option.active {
  background: hsl(var(--color-primary) / 0.15);
  color: hsl(var(--color-primary));
}

/* RTL Support for Arabic */
[dir="rtl"] {
  direction: rtl;
}

[dir="rtl"] .nav-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .lang-option {
  text-align: right;
}

[dir="rtl"] .lang-option:hover {
  padding-right: calc(var(--spacing-md) + 4px);
  padding-left: var(--spacing-md);
}

/* Language Switcher Mobile */
@media (max-width: 768px) {
  .language-switcher {
    margin-right: var(--spacing-md);
    margin-left: var(--spacing-sm);
  }

  .lang-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
  }

  #currentLang {
    display: none;
  }

  .lang-btn::before {
    content: '🌐';
  }

  .lang-dropdown {
    right: auto;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
  }

  .lang-dropdown.active {
    transform: translateX(-50%) translateY(0);
  }
}

/* iPad Specific (Portrait & Landscape) */
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {

  /* iPad Portrait */
  @media (orientation: portrait) {
    .grid-3 {
      grid-template-columns: repeat(2, 1fr);
    }

    .hero h1 {
      font-size: var(--font-size-5xl);
    }
  }

  /* iPad Landscape */
  @media (orientation: landscape) {
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
  }
}

/* ========================================
   Touch Device Optimizations
   ======================================== */
@media (hover: none) and (pointer: coarse) {

  /* Larger touch targets for mobile */
  .btn {
    min-height: 44px;
    padding: var(--spacing-md) var(--spacing-xl);
  }

  .nav-links a {
    padding: var(--spacing-md);
  }

  .social-link {
    width: 52px;
    height: 52px;
  }

  .lang-option {
    padding: var(--spacing-md);
  }

  /* Remove hover effects on touch devices */
  .card:hover,
  .project-card:hover {
    transform: none;
  }

  .skill-item:hover {
    transform: none;
  }
}
/* ========================================
   Activity Feed Styles
   ======================================== */

/* Create Post Card */
.create-post-card {
  margin-bottom: var(--spacing-xl);
}

.create-post-card h3 {
  margin-bottom: var(--spacing-md);
  color: hsl(var(--color-text-primary));
}

.create-post-card textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: hsl(var(--color-bg-tertiary));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: hsl(var(--color-text-primary));
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  resize: vertical;
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-base);
}

.create-post-card textarea:focus {
  outline: none;
  border-color: hsl(var(--color-primary));
  box-shadow: 0 0 0 3px hsla(var(--color-primary), 0.1);
}

.image-upload-section {
  margin-bottom: var(--spacing-md);
}

/* Image Preview */
.image-preview {
  margin-top: var(--spacing-md);
}

.preview-container {
  position: relative;
  display: inline-block;
  max-width: 100%;
}

.preview-container img {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius-lg);
  display: block;
}

.remove-image-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.remove-image-btn:hover {
  background: rgba(255, 0, 0, 0.8);
  transform: scale(1.1);
}

/* Posts Feed */
.posts-feed {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Post Card */
.post-card {
  animation: fadeInUp 0.5s ease-out;
}

.post-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--glass-border);
}

.post-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.post-author-photo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid hsl(var(--color-primary));
}

.post-author h4 {
  margin: 0;
  font-size: var(--font-size-base);
  color: hsl(var(--color-text-primary));
}

.post-time {
  margin: 0;
  font-size: var(--font-size-sm);
  color: hsl(var(--color-text-muted));
}

.delete-post-btn {
  background: transparent;
  border: none;
  color: hsl(var(--color-text-muted));
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.delete-post-btn:hover {
  background: rgba(255, 0, 0, 0.1);
  color: #ff4444;
}

/* Post Content */
.post-content {
  margin-bottom: var(--spacing-md);
}

.post-content p {
  margin-bottom: var(--spacing-md);
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.6;
}

.post-image {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.post-image:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Post Actions */
.post-actions {
  display: flex;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
}

.post-action-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: hsl(var(--color-text-primary));
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.post-action-btn:hover {
  background: var(--glass-bg);
  border-color: hsl(var(--color-primary));
  transform: translateY(-2px);
}

/* Responsive Activity Feed */
@media (max-width: 768px) {
  .create-post-card textarea {
    font-size: var(--font-size-sm);
  }
  
  .post-author-photo {
    width: 40px;
    height: 40px;
  }
  
  .post-image {
    max-height: 300px;
  }
}

@media (max-width: 480px) {
  .post-actions {
    flex-wrap: wrap;
  }
  
  .post-action-btn {
    flex: 1;
    justify-content: center;
  }
}

/* ========================================
   AI Chatbot Styles
   ======================================== */

/* Floating Chat Button */
.ai-chat-button {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: none;
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4), 0 0 20px hsla(var(--color-primary), 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  transition: all var(--transition-base);
  animation: floatButton 3s ease-in-out infinite;
}

.ai-chat-button:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5), 0 0 30px hsla(var(--color-primary), 0.7);
}

.ai-chat-button.active {
  transform: scale(0.9);
}

@keyframes floatButton {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Chat Interface */
.ai-chat-interface {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 400px;
  max-width: calc(100vw - 40px);
  height: 600px;
  max-height: calc(100vh - 100px);
  background: hsl(var(--color-bg-secondary));
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.9);
  transition: all var(--transition-base);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

.ai-chat-interface.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* Chat Header */
.ai-chat-header {
  background: var(--gradient-primary);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.ai-chat-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  color: white;
}

.ai-chat-header p {
  margin: 0;
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
}

.ai-chat-close {
  background: transparent;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-base);
}

.ai-chat-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

/* Chat Messages */
.ai-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  background: hsl(var(--color-bg-primary));
}

/* AI Message */
.ai-message {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.ai-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.ai-message-content {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  max-width: 80%;
}

.ai-message-content p {
  margin: 0;
  color: hsl(var(--color-text-primary));
  line-height: 1.5;
}

/* User Message */
.user-message {
  display: flex;
  justify-content: flex-end;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.user-message-content {
  background: var(--gradient-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  max-width: 80%;
}

.user-message-content p {
  margin: 0;
  color: white;
  line-height: 1.5;
}

/* Typing Indicator */
.typing-indicator .typing-dots {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 6px;
}

.typing-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: hsl(var(--color-text-muted));
  animation: typingDot 1.4s infinite;
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typingDot {
  0%, 60%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  30% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Chat Input */
.ai-chat-input-container {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: hsl(var(--color-bg-secondary));
  border-top: 1px solid var(--glass-border);
  align-items: flex-end;
}

#ai-chat-input {
  flex: 1;
  background: hsl(var(--color-bg-tertiary));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: hsl(var(--color-text-primary));
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  resize: none;
  max-height: 120px;
  transition: all var(--transition-base);
}

#ai-chat-input:focus {
  outline: none;
  border-color: hsl(var(--color-primary));
  box-shadow: 0 0 0 3px hsla(var(--color-primary), 0.1);
}

.ai-chat-send-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.ai-chat-send-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px hsla(var(--color-primary), 0.5);
}

.ai-chat-send-btn:active {
  transform: scale(0.95);
}

/* Error Message */
.ai-message.error .ai-message-content {
  background: rgba(255, 0, 0, 0.1);
  border-color: rgba(255, 0, 0, 0.3);
}

/* Scrollbar Styling */
.ai-chat-messages::-webkit-scrollbar {
  width: 6px;
}

.ai-chat-messages::-webkit-scrollbar-track {
  background: hsl(var(--color-bg-primary));
}

.ai-chat-messages::-webkit-scrollbar-thumb {
  background: hsl(var(--color-primary) / 0.3);
  border-radius: 3px;
}

.ai-chat-messages::-webkit-scrollbar-thumb:hover {
  background: hsl(var(--color-primary) / 0.5);
}

/* Responsive AI Chat */
@media (max-width: 768px) {
  .ai-chat-button {
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
  }
  
  .ai-chat-interface {
    bottom: 20px;
    right: 20px;
    width: calc(100vw - 40px);
    height: calc(100vh - 140px);
  }
}

@media (max-width: 480px) {
  .ai-chat-interface {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    border-radius: 0;
  }
  
  .ai-chat-header {
    border-radius: 0;
  }
  
  .ai-chat-button {
    bottom: 15px;
    right: 15px;
  }
}

/* ========================================
   Login Page Styles
   ======================================== */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-background);
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle,
      hsl(var(--color-primary) / 0.15) 0%,
      transparent 50%);
  animation: rotate 20s linear infinite;
}

.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 450px;
}

.login-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  animation: fadeInUp 0.8s ease-out;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-logo {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.login-header h1 {
  margin: 0 0 var(--spacing-xs) 0;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-header p {
  margin: 0;
  color: hsl(var(--color-text-muted));
}

.login-form {
  margin-bottom: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: hsl(var(--color-text-primary));
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"] {
  width: 100%;
  padding: var(--spacing-md);
  background: hsl(var(--color-bg-tertiary));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: hsl(var(--color-text-primary));
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
  outline: none;
  border-color: hsl(var(--color-primary));
  box-shadow: 0 0 0 3px hsla(var(--color-primary), 0.1);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.login-btn {
  width: 100%;
  margin-top: var(--spacing-md);
  position: relative;
}

.spinner {
  display: inline-block;
  animation: spin 1s linear infinite;
}

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

.login-error {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid rgba(255, 0, 0, 0.3);
  border-radius: var(--radius-md);
  color: #ff4444;
  text-align: center;
  animation: fadeIn 0.3s ease-out;
}

.login-footer {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
}

.login-footer p {
  margin: 0 0 var(--spacing-sm) 0;
  color: hsl(var(--color-text-muted));
  font-size: var(--font-size-sm);
}

.back-link {
  color: hsl(var(--color-primary));
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-base);
}

.back-link:hover {
  color: hsl(var(--color-secondary));
  text-decoration: underline;
}

/* Shake animation for errors */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-10px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(10px);
  }
}

.shake {
  animation: shake 0.5s;
}

/* Responsive Login */
@media (max-width: 480px) {
  .login-card {
    padding: var(--spacing-xl);
  }
  
  .login-logo {
    font-size: 3rem;
  }
}