/* AcemiYazar - Editorial Knowledge Portal */

/* CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Design Tokens */
:root {
  /* Typography */
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Colors - Category System */
  --color-girisimcilik: #0066CC;
  --color-startup: #7C3AED;
  --color-hukuk: #DC2626;
  --color-saglik: #059669;

  /* Base Colors */
  --color-text-primary: #0A0A0A;
  --color-text-secondary: #525252;
  --color-text-tertiary: #A3A3A3;
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #FAFAFA;
  --color-bg-tertiary: #F5F5F5;
  --color-border: #E5E5E5;
  --color-accent: #0A0A0A;

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

  /* Layout */
  --max-width: 1280px;
  --content-width: 720px;

  /* Animation */
  --ease-smooth: cubic-bezier(0.4, 0.0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;
}

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

/* Base Styles */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
}

/* Typography Scale */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
}

h4 {
  font-size: 1.25rem;
}

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

/* FAQ Section Styling */
.faq-section {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.faq-section-title {
  margin-bottom: var(--space-xl);
  font-size: 1.5rem;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.faq-section-title::before {
  content: "❓";
  font-size: 1.25rem;
}

.faq-item {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.faq-item strong {
  display: block;
  font-size: 1.1rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.faq-item p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
  /* Override default p margin in FAQ */
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--duration-base) var(--ease-smooth);
}

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

/* Header - Masthead Style */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  transition: opacity var(--duration-base);
}

.logo:hover {
  opacity: 0.7;
}

/* Navigation - Desktop Default */
.nav {
  position: static;
  background: transparent;
  padding: 0;
  transform: none;
  transition: transform var(--duration-base) var(--ease-smooth);
}

.nav ul {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  align-items: center;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding-bottom: 0.25rem;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-text-primary);
  transition: width var(--duration-base) var(--ease-smooth);
}

.nav a:hover {
  color: var(--color-text-primary);
}

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

/* Hamburger Menu - Global styles */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  cursor: pointer;
  z-index: 10001;
  /* Must stay above everything */
  position: relative;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  transition: all 0.3s ease;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.menu-toggle.active {
  background: #111827;
  /* Dark background when open */
  border-color: rgba(255, 255, 255, 0.1);
}

.menu-toggle.active span {
  background: #FFFFFF;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Masthead - Editorial Hero */
.masthead {
  padding: var(--space-3xl) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 50%, #fce7f3 100%);
  text-align: center;
  animation: fadeInUp var(--duration-slow) var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.masthead::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.masthead-title,
.masthead-subtitle {
  position: relative;
  z-index: 1;
}

.masthead-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  margin-bottom: var(--space-md);
  letter-spacing: -0.03em;
  line-height: 0.95;
}

.masthead-subtitle {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
  line-height: 1.5;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  padding: var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.category-tab {
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--duration-base) var(--ease-smooth);
  cursor: pointer;
}

.category-tab:hover {
  border-color: var(--color-text-primary);
  transform: translateY(-2px);
}

.category-tab[data-category="girisimcilik"]:hover {
  border-color: var(--color-girisimcilik);
  color: var(--color-girisimcilik);
}

.category-tab[data-category="startup"]:hover {
  border-color: var(--color-startup);
  color: var(--color-startup);
}

.category-tab[data-category="hukuk"]:hover {
  border-color: var(--color-hukuk);
  color: var(--color-hukuk);
}

.category-tab[data-category="saglik"]:hover {
  border-color: var(--color-saglik);
  color: var(--color-saglik);
}

/* Main Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

/* Section Headers */
.section {
  margin-bottom: var(--space-3xl);
  animation: fadeInUp var(--duration-slow) var(--ease-smooth);
  animation-fill-mode: both;
}

.section:nth-child(1) {
  animation-delay: 100ms;
}

.section:nth-child(2) {
  animation-delay: 200ms;
}

.section:nth-child(3) {
  animation-delay: 300ms;
}

.section:nth-child(4) {
  animation-delay: 400ms;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 3px solid var(--color-accent);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section[data-category="girisimcilik"] .section-header {
  border-color: var(--color-girisimcilik);
}

.section[data-category="startup"] .section-header {
  border-color: var(--color-startup);
}

.section[data-category="hukuk"] .section-header {
  border-color: var(--color-hukuk);
}

.section[data-category="saglik"] .section-header {
  border-color: var(--color-saglik);
}

.section-link {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-tertiary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.section-link:hover {
  color: var(--color-text-primary);
}

.section-link::after {
  content: '→';
  transition: transform var(--duration-base);
}

.section-link:hover::after {
  transform: translateX(4px);
}

/* Article Grid - Magazine Layout */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

/* Featured Article (First in grid) */
.article-card:first-child {
  grid-column: span 2;
}

@media (max-width: 768px) {
  .article-card:first-child {
    grid-column: span 1;
  }
}

/* Article Card */
.article-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  cursor: pointer;
  transition: transform var(--duration-base) var(--ease-smooth);
}

.article-card:hover {
  transform: translateY(-4px);
}

.article-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-category {
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-weight: 700;
}

.article-card[data-category="girisimcilik"] .article-category {
  background: var(--color-girisimcilik);
  color: white;
}

.article-card[data-category="startup"] .article-category {
  background: var(--color-startup);
  color: white;
}

.article-card[data-category="hukuk"] .article-category {
  background: var(--color-hukuk);
  color: white;
}

.article-card[data-category="saglik"] .article-category {
  background: var(--color-saglik);
  color: white;
}

.article-date {
  color: var(--color-text-tertiary);
  font-weight: 500;
}

.article-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-xs);
  transition: color var(--duration-base);
}

.article-card:first-child .article-title {
  font-size: 2rem;
  line-height: 1.2;
}

.article-card:hover .article-title {
  color: var(--color-text-secondary);
}

.article-excerpt {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card:first-child .article-excerpt {
  font-size: 1.1rem;
  -webkit-line-clamp: 4;
  line-clamp: 4;
}

.article-meta-footer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: auto;
  padding-top: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.read-time::before {
  content: '·';
  margin-right: var(--space-sm);
}

/* Footer */
.footer {
  background: linear-gradient(180deg, var(--color-bg-tertiary) 0%, #e5e7eb 100%);
  border-top: 2px solid var(--color-border);
  padding: var(--space-2xl) var(--space-lg);
  margin-top: var(--space-3xl);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-column h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: color var(--duration-fast);
}

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--space-md);
}

.footer-description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

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

/* Content Page Styles */
.content-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

/* Article Layout with Sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-2xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

.article-main {
  min-width: 0;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: calc(var(--space-2xl) + 80px);
  height: fit-content;
}

.sidebar-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.sidebar-title {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-item {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-item-category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.sidebar-item[data-category="girisimcilik"] .sidebar-item-category {
  background: var(--color-girisimcilik);
  color: white;
}

.sidebar-item[data-category="startup"] .sidebar-item-category {
  background: var(--color-startup);
  color: white;
}

.sidebar-item[data-category="hukuk"] .sidebar-item-category {
  background: var(--color-hukuk);
  color: white;
}

.sidebar-item[data-category="saglik"] .sidebar-item-category {
  background: var(--color-saglik);
  color: white;
}

.sidebar-item-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.25rem;
}

.sidebar-item-title a {
  color: var(--color-text-primary);
  transition: color var(--duration-fast);
}

.sidebar-item-title a:hover {
  color: var(--color-primary);
}

.sidebar-item-date {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
}

.breadcrumb a:hover {
  color: var(--color-text-primary);
}

.article-header {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 2px solid var(--color-border);
}

.article-title {
  margin-bottom: var(--space-md);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  /* Proportional title for articles */
  line-height: 1.2;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  font-size: 0.9rem;
}

.article-content {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-primary);
}

.article-content h2 {
  font-size: 1.75rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article-content h3 {
  font-size: 1.35rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.article-content li {
  margin-bottom: var(--space-sm);
}

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  font-style: italic;
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  padding: var(--space-lg);
  border-radius: 4px;
}

.article-content code {
  background: var(--color-bg-tertiary);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
  font-family: 'Monaco', 'Courier New', monospace;
}

.article-content pre {
  background: var(--color-bg-tertiary);
  padding: var(--space-md);
  border-radius: 8px;
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.article-content pre code {
  background: none;
  padding: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --space-xl: 2.5rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
  }

  .article-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .header {
    z-index: 9999;
  }

  .header-container {
    padding: var(--space-sm) var(--space-md);
    position: relative;
    z-index: 9999;
    height: 70px;
    /* Fixed height for header on mobile for better alignment */
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #0F172A !important;
    /* Solid Slate-900 - ABSOLUTELY NO TRANSPARENCY */
    z-index: 10000;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-100%);
    /* Slide down from top */
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex !important;
    align-items: flex-start;
    /* Move items higher */
    justify-content: center;
    padding-top: 100px;
    /* Offset from top */
    margin: 0;
  }

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

  .nav ul {
    flex-direction: column;
    gap: 0;
    /* Removing gap to use padding with borders */
    align-items: center;
    width: 100%;
    padding: 0 2rem;
  }

  .nav li {
    width: 100%;
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.5s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    /* Divider line */
  }

  .nav li:last-child {
    border-bottom: none;
    /* No line after the last item */
  }

  .nav.active li {
    opacity: 1;
    transform: translateY(0);
  }

  .nav.active li:nth-child(1) {
    transition-delay: 0.1s;
  }

  .nav.active li:nth-child(2) {
    transition-delay: 0.15s;
  }

  .nav.active li:nth-child(3) {
    transition-delay: 0.2s;
  }

  .nav.active li:nth-child(4) {
    transition-delay: 0.25s;
  }

  .nav.active li:nth-child(5) {
    transition-delay: 0.3s;
  }

  .nav a {
    font-family: var(--font-display);
    font-size: 1.5rem;
    /* Smaller font size */
    font-weight: 700;
    color: #FFFFFF !important;
    letter-spacing: -0.01em;
    padding: 1.25rem 0;
    /* Balanced padding for the lines */
    display: block;
    transition: all 0.3s ease;
  }

  .nav a:hover {
    color: var(--color-girisimcilik) !important;
    background: rgba(255, 255, 255, 0.05);
  }

  .masthead {
    padding: var(--space-xl) var(--space-md);
    position: relative;
    z-index: 1;
  }

  .category-tabs {
    padding: var(--space-lg) var(--space-md);
    position: relative;
    z-index: 1;
  }

  .container {
    padding: var(--space-xl) var(--space-md);
    position: relative;
    z-index: 1;
  }

  main {
    position: relative;
    z-index: 1;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .sidebar {
    position: static;
  }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {

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

/* Print Styles */
@media print {

  .header,
  .footer,
  .category-tabs,
  .section-link {
    display: none;
  }

  body {
    font-size: 12pt;
  }

  .article-content {
    font-size: 11pt;
  }
}