/* ============================================
   BUGRA BINACI PORTFOLIO - CSS
   Modern, responsive ve profesyonel tasarım
   ============================================ */

/* ========== CSS Variables ========== */
:root {
  /* Colors */
  --color-primary: #0c8ee7;
  --color-primary-dark: #0070c4;
  --color-primary-light: #36aaf5;
  --color-primary-50: #f0f7ff;
  --color-primary-100: #e0effe;
  --color-primary-900: #0a3f6d;
  
  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  --color-slate-300: #cbd5e1;
  --color-slate-400: #94a3b8;
  --color-slate-500: #64748b;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1e293b;
  --color-slate-900: #0f172a;
  --color-slate-950: #020617;
  
  --color-emerald-500: #10b981;
  --color-violet-500: #8b5cf6;
  --color-amber-500: #f59e0b;
  --color-rose-500: #f43f5e;
  
  --color-white: #ffffff;
  --color-black: #000000;
  
  /* Background & Text */
  --bg-primary: #fafbfc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-soft: 0 2px 15px -3px rgba(0, 0, 0, 0.07), 0 10px 20px -2px rgba(0, 0, 0, 0.04);
  --shadow-strong: 0 10px 40px -10px rgba(0, 0, 0, 0.15), 0 20px 50px -15px rgba(0, 0, 0, 0.1);
  
  /* 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-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  
  /* Container */
  --container-max-width: 1280px;
  --container-padding: clamp(1rem, 5vw, 2rem);
  --section-padding: clamp(4rem, 10vw, 8rem);
}

/* Dark Mode */
.dark {
  --bg-primary: #0a0f1a;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: #1e293b;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* ========== Reset & Base ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

::selection {
  background-color: var(--color-primary);
  color: white;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw + 0.5rem, 3rem); }
h3 { font-size: clamp(1.5rem, 2vw + 0.5rem, 2rem); }

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

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

/* ========== Utility Classes ========== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

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

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(12, 142, 231, 0.25);
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-large {
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-base);
}

.btn-block {
  width: 100%;
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  transition: all var(--transition-normal);
  padding: 1rem 0;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
  padding: 0.75rem 0;
}

.dark .navbar.scrolled {
  background-color: rgba(15, 23, 42, 0.8);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: var(--text-primary);
}

.brand-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-primary);
  color: white;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.brand-text {
  display: none;
}

@media (min-width: 640px) {
  .brand-text {
    display: inline;
  }
}

.navbar-menu {
  display: none;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

@media (min-width: 768px) {
  .navbar-menu {
    display: flex;
  }
}

.nav-link {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--bg-tertiary);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.dark .theme-toggle .icon-sun {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.dark .theme-toggle .icon-moon {
  opacity: 1;
}

.theme-toggle:not(.dark) .icon-sun {
  opacity: 1;
}

.theme-toggle:not(.dark) .icon-moon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-90deg);
}

.navbar-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

@media (min-width: 768px) {
  .navbar-toggle {
    display: none;
  }
}

.navbar-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu */
@media (max-width: 767px) {
  .navbar-menu {
    position: fixed;
    top: 4rem;
    left: 1rem;
    right: 1rem;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-strong);
    padding: 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
  }
  
  .navbar-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    display: flex;
  }
  
  .nav-link {
    display: block;
    padding: 0.75rem 1rem;
  }
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 5rem;
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to bottom right, var(--color-slate-50), white, var(--color-primary-50));
}

.dark .hero-background {
  background: linear-gradient(to bottom right, var(--color-slate-950), var(--color-slate-900), rgba(12, 142, 231, 0.1));
}

.gradient-orb {
  position: absolute;
  width: 24rem;
  height: 24rem;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.orb-1 {
  top: 25%;
  left: -5rem;
  background: var(--color-primary-200);
}

.orb-2 {
  bottom: 25%;
  right: -5rem;
  background: var(--color-primary-100);
}

.hero-content {
  text-align: center;
  max-width: 56rem;
  margin: 0 auto;
  padding: 2rem 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  border: 1px solid var(--color-primary-100);
  border-radius: 9999px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.dark .hero-badge {
  background-color: rgba(12, 142, 231, 0.1);
  color: var(--color-primary-300);
  border-color: rgba(12, 142, 231, 0.2);
}

.badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.hero-description {
  font-size: clamp(1.125rem, 1vw + 0.5rem, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

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

.stat-number {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  animation: float 2s ease-in-out infinite;
}

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

/* ========== Animations ========== */
.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== Section Styles ========== */
.section-header {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto 4rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  border-radius: 9999px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 1rem;
}

.dark .section-label {
  background-color: rgba(12, 142, 231, 0.1);
  color: var(--color-primary-300);
}

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

.section-description {
  font-size: clamp(1.125rem, 1vw + 0.5rem, 1.25rem);
  color: var(--text-secondary);
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .section-grid {
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
  }
}

/* ========== About Section ========== */
.about {
  background-color: var(--bg-secondary);
}

.section-image {
  position: relative;
}

.image-wrapper {
  position: relative;
  max-width: 28rem;
  margin: 0 auto;
}

@media (min-width: 1024px) {
  .image-wrapper {
    margin: 0;
  }
}

.image-placeholder {
  position: relative;
  aspect-ratio: 4/5;
  background: linear-gradient(to bottom right, var(--color-slate-200), var(--color-slate-300));
  border-radius: var(--radius-2xl);
  overflow: hidden;
}

.image-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.dark .image-placeholder {
  background: linear-gradient(to bottom right, var(--color-slate-700), var(--color-slate-800));
}

.placeholder-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.placeholder-icon {
  width: 6rem;
  height: 6rem;
  background-color: var(--color-primary-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-600);
  margin-bottom: 1rem;
}

.dark .placeholder-icon {
  background-color: rgba(12, 142, 231, 0.2);
  color: var(--color-primary-400);
}

.image-badge {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: 1rem;
  box-shadow: var(--shadow-strong);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
}

.badge-icon {
  width: 3rem;
  height: 3rem;
  background-color: #10b981;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.badge-title {
  font-weight: 600;
  color: var(--text-primary);
}

.badge-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.content-text {
  margin-bottom: 2rem;
}

.text-large {
  font-size: clamp(1.125rem, 1vw + 0.5rem, 1.25rem);
  margin-bottom: 1rem;
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.highlight-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.approach-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 5rem;
}

@media (min-width: 768px) {
  .approach-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.approach-card {
  padding: 2rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
}

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

.card-icon {
  width: 3rem;
  height: 3rem;
  background-color: var(--color-primary-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  transition: background-color var(--transition-normal);
}

.dark .card-icon {
  background-color: rgba(12, 142, 231, 0.2);
}

.approach-card:hover .card-icon {
  background-color: var(--color-primary);
}

.approach-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 0.5rem;
}

.approach-card p {
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* ========== Services Section ========== */
.services {
  background-color: var(--bg-tertiary);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.service-card {
  padding: 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
}

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

.service-icon {
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--color-primary-100);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  transition: background-color var(--transition-normal);
}

.dark .service-icon {
  background-color: rgba(12, 142, 231, 0.2);
}

.service-card:hover .service-icon {
  background-color: var(--color-primary);
}

.service-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 0.75rem;
}

.service-card > p {
  margin-bottom: 1rem;
}

.service-for {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.service-benefits {
  list-style: none;
  margin-bottom: 1.5rem;
}

.service-benefits li {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.service-link:hover {
  gap: 0.75rem;
}

/* ========== Projects Section ========== */
.projects {
  background-color: var(--bg-secondary);
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--border-color);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 12px -2px rgba(12, 142, 231, 0.25);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.project-card {
  position: relative;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

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

.project-image {
  position: relative;
  aspect-ratio: 16/9;
  background: linear-gradient(to bottom right, var(--color-slate-200), var(--color-slate-300));
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.project-image img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.dark .project-image {
  background: linear-gradient(to bottom right, var(--color-slate-700), var(--color-slate-800));
}

.project-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(12, 142, 231, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.project-overlay-btn {
  width: 3rem;
  height: 3rem;
  background-color: white;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: background-color var(--transition-fast);
}

.project-overlay-btn:hover {
  background-color: var(--bg-tertiary);
}

.project-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.25rem 0.625rem;
  background-color: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-md);
}

.project-info {
  padding: 1.25rem;
}

.project-category {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.project-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 0.5rem;
}

.project-card p {
  font-size: var(--font-size-sm);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.tech-tag {
  padding: 0.25rem 0.5rem;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-md);
}

/* ========== Skills Section ========== */
.skills {
  background-color: var(--bg-tertiary);
}

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

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

.skill-category {
  padding: 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

.category-badge {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
}

.dark .category-badge {
  background-color: rgba(12, 142, 231, 0.1);
  color: var(--color-primary-300);
}

.badge-emerald {
  background-color: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.dark .badge-emerald {
  background-color: rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.badge-violet {
  background-color: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

.dark .badge-violet {
  background-color: rgba(139, 92, 246, 0.2);
  color: #8b5cf6;
}

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

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

.skill-header span:first-child {
  font-weight: 500;
  color: var(--text-primary);
}

.skill-header span:last-child {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

.skill-bar {
  height: 0.5rem;
  background-color: var(--bg-tertiary);
  border-radius: 9999px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(to right, var(--color-primary), var(--color-primary-dark));
  border-radius: 9999px;
  width: 0;
  transition: width 1s ease-out;
}

.skill-emerald {
  background: linear-gradient(to right, #10b981, #059669);
}

.skill-violet {
  background: linear-gradient(to right, #8b5cf6, #7c3aed);
}

.additional-skills {
  margin-top: 3rem;
  text-align: center;
}

.additional-skills h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 1.5rem;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  max-width: 48rem;
  margin: 0 auto;
}

.skill-tag {
  padding: 0.5rem 1rem;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* ========== Education Section ========== */
.education {
  background-color: var(--bg-secondary);
}

.timeline {
  position: relative;
  max-width: 48rem;
  margin: 0 auto;
  padding-left: 2rem;
}

@media (min-width: 768px) {
  .timeline {
    padding-left: 0;
  }
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--border-color);
}

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

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
  padding-left: 2rem;
}

@media (min-width: 768px) {
  .timeline-item {
    padding-left: 0;
    padding-right: calc(50% + 1.5rem);
  }
  
  .timeline-item:nth-child(even) {
    padding-right: 0;
    padding-left: calc(50% + 1.5rem);
  }
}

.timeline-dot {
  position: absolute;
  left: -0.5rem;
  top: 0;
  width: 1.5rem;
  height: 1.5rem;
  background-color: var(--bg-secondary);
  border: 4px solid var(--bg-secondary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

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

.timeline-content {
  padding: 1.5rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: box-shadow var(--transition-normal);
}

.timeline-content:hover {
  box-shadow: var(--shadow-md);
}

.timeline-period {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
}

.dark .timeline-period {
  background-color: rgba(12, 142, 231, 0.1);
  color: var(--color-primary-300);
}

.timeline-content h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 0.25rem;
}

.timeline-org {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.timeline-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

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

.timeline-highlight {
  padding: 0.25rem 0.625rem;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-md);
}

/* ========== Contact Section ========== */
.contact {
  background-color: var(--bg-tertiary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.info-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

.info-icon {
  width: 3rem;
  height: 3rem;
  background-color: var(--color-primary-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.dark .info-icon {
  background-color: rgba(12, 142, 231, 0.2);
}

.info-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.info-value {
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.info-value:hover {
  color: var(--color-primary);
}

.social-links h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 1rem;
}

.social-icons {
  display: flex;
  gap: 0.75rem;
}

.social-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-icon:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.availability-badge {
  padding: 1rem;
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.dark .availability-badge {
  background-color: rgba(16, 185, 129, 0.2);
  border-color: rgba(16, 185, 129, 0.3);
}

.availability-badge strong {
  display: block;
  color: #10b981;
  margin-bottom: 0.25rem;
}

.availability-badge p {
  font-size: var(--font-size-sm);
  color: #059669;
  margin-bottom: 0;
}

.dark .availability-badge p {
  color: #10b981;
}

.contact-form {
  padding: 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-soft);
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(12, 142, 231, 0.1);
}

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

.form-message {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  display: none;
}

.form-message.show {
  display: block;
}

.form-message.success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #059669;
}

.form-message.error {
  background-color: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.2);
  color: #dc2626;
}

/* ========== Footer ========== */
.footer {
  background-color: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-brand p {
  max-width: 28rem;
  margin-bottom: 1rem;
}

.footer-location {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer-links h3,
.footer-contact h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-contact a {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 1rem;
  transition: color var(--transition-fast);
}

.footer-contact a:hover {
  color: var(--color-primary);
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ========== Modal ========== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 48rem;
  max-height: 90vh;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-strong);
  overflow-y: auto;
  z-index: 10;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  background-color: rgba(255, 255, 255, 0.8);
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  z-index: 20;
}

.dark .modal-close {
  background-color: rgba(15, 23, 42, 0.8);
}

.modal-close:hover {
  background-color: var(--bg-tertiary);
}

/* ========== Responsive ========== */
@media (max-width: 767px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .section-padding {
    padding: 3rem 0;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}