/* ==========================================
   KIŞISEL PORTFOLIO WEB SİTESİ - CSS
   Modern, Premium ve Dinamik Tasarım
   ========================================== */

/* ==========================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================== */
:root {
  /* Renk Paleti - Modern Dark Theme */
  --color-bg-primary: #0a0e27;
  --color-bg-secondary: #151932;
  --color-bg-tertiary: #1e2442;
  --color-bg-card: rgba(30, 36, 66, 0.6);
  --color-bg-card-hover: rgba(30, 36, 66, 0.9);

  /* Scrollbar - Yeni */
  --scrollbar-track: #0a0e27;
  --scrollbar-thumb: #2d3748;
  --scrollbar-thumb-hover: #4a5568;

  /* Gradient'lar */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);

  /* Metin Renkleri */
  --color-text-primary: #ffffff;
  --color-text-secondary: #b8c1ec;
  --color-text-muted: #7982a9;
  --color-text-gradient: var(--gradient-primary);

  /* Accent Renkleri */
  --color-accent-purple: #667eea;
  --color-accent-pink: #f093fb;
  --color-accent-blue: #4facfe;
  --color-accent-green: #43e97b;

  /* 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-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', 'Inter', 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;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 32px rgba(102, 126, 234, 0.3);

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

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(240, 147, 251, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(79, 172, 254, 0.1) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.8;
  }
}

/* ==========================================
   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-5xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  /* Hafif gölge eklendi */
}

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

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

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

a {
  color: var(--color-accent-purple);
  text-decoration: none;
  transition: all var(--transition-base);
}

a:hover {
  color: var(--color-accent-pink);
}

/* ==========================================
   NAVIGATION
   ========================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--spacing-md) 0;
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--spacing-sm) 0;
  background: rgba(10, 14, 39, 0.95);
  box-shadow: var(--shadow-lg);
}

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

.nav-logo {
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: lowercase;
  display: flex;
  align-items: center;
  height: auto;
  /* Yüksekliği içeriğe bırak */
}

.nav-logo img {
  max-width: none;
  /* Kısıtlamayı kaldır */
  height: auto;
  display: block;
}

.nav-logo:hover {
  transform: scale(1.05);
  filter: brightness(1.2);
}

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

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* ==========================================
   CONTAINER & LAYOUT
   ========================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding-top: calc(var(--spacing-3xl) + 40px);
  padding-bottom: var(--spacing-3xl);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
  position: relative;
  text-align: center;
  padding-top: calc(var(--spacing-3xl) + 80px);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-greeting {
  font-size: var(--font-size-lg);
  color: var(--color-accent-purple);
  margin-bottom: var(--spacing-sm);
  animation: fadeInDown 0.6s ease-out;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.6s both;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
  /* Daha belirgin gölge */
}

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

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

.btn-secondary:hover {
  background: var(--color-accent-purple);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ==========================================
   CARDS
   ========================================== */
.card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  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;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(102, 126, 234, 0.3);
}

.card:hover::before {
  transform: scaleX(1);
}

/* ==========================================
   PROJECT GRID
   ========================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.project-card {
  cursor: pointer;
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-base);
}

.project-card:hover .project-image {
  transform: scale(1.05);
}

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

.project-description {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

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

.tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(102, 126, 234, 0.2);
  color: var(--color-accent-purple);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ==========================================
   CONTACT FORM
   ========================================== */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-purple);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  background: var(--color-bg-secondary);
  padding: var(--spacing-xl) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.social-link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  color: white;
  font-size: var(--font-size-xl);
  transition: all var(--transition-base);
}

.social-link:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: var(--shadow-glow);
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.hidden {
  display: none !important;
}

.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);
}

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

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

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

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

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-xl);
    transition: left var(--transition-base);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

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

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

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

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

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }

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

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

/* ==========================================
   PRINT STYLES
   ========================================== */
@media print {

  .navbar,
  .nav-toggle,
  .hero-cta,
  .footer {
    display: none;
  }

  body {
    background: white;
    color: black;
  }
}

/* ==========================================
   PROJECT MODAL STYLES
   ========================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(5px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s ease;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-overlay:not(.hidden) .modal-container {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(0, 0, 0, 0.5);
  border: none;
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.modal-close-btn:hover {
  background: var(--color-primary);
}

.modal-content {
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .modal-content {
    flex-direction: row;
    max-height: 85vh;
    /* Limit height */
    overflow: hidden;
    /* Prevent container scroll */
  }

  .modal-image-container {
    width: 50%;
    height: auto;
    /* Match parent height */
    min-height: 400px;
  }

  .modal-info {
    width: 50%;
    padding: var(--spacing-2xl);
    overflow-y: auto;
    /* Only text scrolls */
    max-height: 100%;
  }
}

.modal-image-container {
  width: 100%;
  background: #f8fafc;
  /* Neutral light gray background */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.modal-image-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  /* Shows full image without cropping */
  transition: transform 0.3s ease;
}

.modal-info {
  padding: var(--spacing-xl);
}

.modal-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

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

.modal-description {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
  white-space: pre-wrap;
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: auto;
}

.btn-download {
  background: var(--color-accent-purple);
  color: white;
}

.btn-download:hover {
  background: color-mix(in srgb, var(--color-accent-purple), white 10%);
}