/* ==========================================================================
   EROL SÖNMEZOCAK - SERBEST MUHASEBECİ MALİ MÜŞAVİR
   Modern CSS Design System & Theme Styling
   ========================================================================== */

@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');

:root {
  /* Color Palette - Premium Navy & Gold Accent */
  --primary-navy: #0f172a;
  --secondary-navy: #1e293b;
  --accent-gold: #d97706;
  --accent-gold-hover: #b45309;
  --accent-gold-light: #fef3c7;
  --accent-blue: #2563eb;
  
  --bg-dark: #090d16;
  --bg-card: #1e293b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --text-dark-muted: #94a3b8;
  
  --border-light: #e2e8f0;
  --border-dark: #334155;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
  --shadow-gold: 0 8px 25px rgba(217, 119, 6, 0.25);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-light);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary-navy);
}

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

ul {
  list-style: none;
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Section Header */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: var(--accent-gold-light);
  color: var(--accent-gold-hover);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  color: var(--primary-navy);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 650px;
  margin-bottom: 3rem;
}

.text-center {
  text-align: center;
}
.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--accent-gold);
  color: var(--bg-white);
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  background-color: var(--accent-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(217, 119, 6, 0.35);
}

.btn-outline {
  border-color: var(--border-dark);
  color: var(--text-light);
  background: transparent;
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

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

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

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 0;
  transition: var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--bg-white);
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-gold), #b45309);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  box-shadow: var(--shadow-gold);
}

.logo-text h3 {
  color: var(--bg-white);
  font-size: 1.25rem;
  line-height: 1.1;
  font-weight: 700;
}

.logo-text span {
  font-size: 0.75rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text-dark-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-gold);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--bg-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  background: linear-gradient(135deg, #090d16 0%, #0f172a 60%, #1e293b 100%);
  color: var(--text-light);
  padding: 10rem 0 6rem;
  overflow: hidden;
}

.hero-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(rgba(217, 119, 6, 0.1) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.6;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.2rem;
  background: rgba(217, 119, 6, 0.15);
  border: 1px solid rgba(217, 119, 6, 0.3);
  color: var(--accent-gold);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  color: var(--bg-white);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-title span {
  color: var(--accent-gold);
  background: linear-gradient(135deg, #f59e0b, #d97706);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-dark-muted);
  margin-bottom: 2.5rem;
  max-width: 580px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item h4 {
  font-size: 2.2rem;
  color: var(--accent-gold);
  margin-bottom: 0.2rem;
}

.stat-item p {
  font-size: 0.875rem;
  color: var(--text-dark-muted);
}

.hero-card {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.profile-avatar {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--accent-gold), var(--primary-navy));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--bg-white);
  font-family: var(--font-heading);
  font-weight: 700;
  border: 3px solid var(--accent-gold);
}

.profile-avatar-img {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-gold);
  box-shadow: var(--shadow-gold);
  flex-shrink: 0;
}

.profile-info h3 {
  color: var(--bg-white);
  font-size: 1.4rem;
}

.profile-info p {
  color: var(--accent-gold);
  font-size: 0.9rem;
  font-weight: 500;
}

.hero-card-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-card-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-dark-muted);
}

.hero-card-item i {
  color: var(--accent-gold);
  margin-top: 0.2rem;
}

/* About Section */
.about {
  padding: 7rem 0;
  background-color: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-experience-box {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 3rem;
  border: 1px solid var(--border-light);
  position: relative;
}

.exp-badge {
  position: absolute;
  top: -20px;
  right: 30px;
  background: var(--accent-gold);
  color: var(--bg-white);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-family: var(--font-heading);
  box-shadow: var(--shadow-gold);
}

.about-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.timeline-item {
  display: flex;
  gap: 1.25rem;
}

.timeline-year {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--accent-gold);
  min-width: 90px;
}

.timeline-content h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.timeline-content p {
  font-size: 0.925rem;
  color: var(--text-muted);
}

/* Services Section */
.services {
  padding: 7rem 0;
  background-color: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(217, 119, 6, 0.4);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-gold-light);
  color: var(--accent-gold-hover);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--accent-gold);
  color: var(--bg-white);
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-list {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid var(--border-light);
  padding-top: 1.25rem;
}

.service-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.service-list li i {
  color: var(--accent-gold);
}

/* Articles / Blog Section */
.articles {
  padding: 7rem 0;
  background-color: var(--bg-white);
}

.articles-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.filter-btn {
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--border-light);
  background: var(--bg-light);
  color: var(--text-muted);
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-color: var(--primary-navy);
}

.search-box {
  position: relative;
  min-width: 280px;
}

.search-input {
  width: 100%;
  padding: 0.7rem 1rem 0.7rem 2.8rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 0.9rem;
  background-color: var(--bg-light);
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--accent-gold);
  background-color: var(--bg-white);
  box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.1);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2rem;
}

.article-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-md);
  background: var(--bg-white);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.article-category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--accent-gold-light);
  color: var(--accent-gold-hover);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.article-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
  color: var(--primary-navy);
}

.article-excerpt {
  color: var(--text-muted);
  font-size: 0.925rem;
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-gold);
}

.read-more {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Article Detail Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-white);
  width: 100%;
  max-width: 850px;
  max-height: 90vh;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  position: relative;
  padding: 3rem;
  animation: modalSlideUp 0.3s ease-out;
}

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

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--primary-navy);
  color: var(--bg-white);
}

.article-content-body {
  margin-top: 2rem;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #334155;
}

.article-content-body h2 {
  margin: 1.8rem 0 1rem;
  font-size: 1.6rem;
}

.article-content-body p {
  margin-bottom: 1.25rem;
}

.article-content-body ul, .article-content-body ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.article-content-body li {
  margin-bottom: 0.5rem;
}

.article-callout {
  background: var(--accent-gold-light);
  border-left: 4px solid var(--accent-gold);
  padding: 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-weight: 500;
}

/* Contact Section */
.contact {
  padding: 7rem 0;
  background-color: var(--primary-navy);
  color: var(--text-light);
}

.contact .section-title {
  color: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info-card {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 2.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: rgba(217, 119, 6, 0.15);
  border: 1px solid rgba(217, 119, 6, 0.3);
  color: var(--accent-gold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-details h4 {
  color: var(--bg-white);
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.contact-details p, .contact-details a {
  color: var(--text-dark-muted);
  font-size: 0.95rem;
}

.contact-form-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  color: var(--text-main);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--primary-navy);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.1);
}

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

/* Footer */
.footer {
  background-color: var(--bg-dark);
  color: var(--text-dark-muted);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.875rem;
}

.fevren-credit {
  display: inline-flex;
  align-items: center;
}

.fevren-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 1.1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  color: var(--text-dark-muted);
  text-decoration: none;
  transition: var(--transition);
}

.fevren-badge:hover {
  background: rgba(217, 119, 6, 0.1);
  border-color: var(--accent-gold);
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.18);
  color: var(--text-dark-muted);
}

.fevren-logo-img {
  height: 22px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.05);
}

.fevren-icon {
  color: var(--accent-gold);
  font-size: 0.95rem;
}

.fevren-brand {
  color: #f59e0b;
  font-weight: 600;
}

/* Articles Layout & Tree Sidebar */
.articles-layout-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2.5rem;
  align-items: start;
}

.articles-main-content {
  min-width: 0;
}

.articles-tree-sidebar {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: sticky;
  top: 100px;
  box-shadow: var(--shadow-sm);
}

.tree-sidebar-header {
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-light);
}

.tree-sidebar-header h3 {
  font-size: 1.15rem;
  color: var(--primary-navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tree-sidebar-header h3 i {
  color: var(--accent-gold);
}

.tree-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-top: 0.2rem;
}

.tree-view-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tree-year-node {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-white);
  overflow: hidden;
  transition: var(--transition);
}

.tree-year-header {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  background: rgba(248, 250, 252, 0.8);
  user-select: none;
  transition: var(--transition);
}

.tree-year-header:hover {
  background: var(--accent-gold-light);
}

.tree-chevron {
  font-size: 0.75rem;
  color: var(--text-muted);
  width: 14px;
  transition: var(--transition);
}

.tree-folder {
  color: var(--accent-gold);
  font-size: 1rem;
}

.tree-year-title {
  font-weight: 700;
  font-size: 0.925rem;
  color: var(--primary-navy);
  flex-grow: 1;
}

.tree-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--accent-gold-light);
  color: var(--accent-gold-hover);
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
}

.tree-article-list {
  display: none;
  flex-direction: column;
  padding: 0.4rem 0.5rem;
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
}

.tree-year-node.open .tree-article-list {
  display: flex;
}

.tree-article-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 0.2rem;
}

.tree-article-item:hover {
  background: var(--bg-light);
}

.tree-article-item.active {
  background: var(--primary-navy);
  color: var(--bg-white);
}

.tree-article-item.active .tree-article-title {
  color: var(--bg-white);
}

.tree-article-item.active .tree-file-icon,
.tree-article-item.active .tree-article-date {
  color: var(--accent-gold);
}

.tree-file-icon {
  font-size: 0.9rem;
  color: var(--accent-gold);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.tree-article-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.tree-article-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.35;
  white-space: normal;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tree-article-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tree-empty {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1.5rem;
}

/* Umut Muhasebe Section */
.umut-muhasebe {
  padding: 7rem 0;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.umut-company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.umut-info-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.umut-card-icon {
  width: 54px;
  height: 54px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.umut-info-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: var(--primary-navy);
}

.umut-info-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.umut-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.umut-feature-list li {
  font-size: 0.9rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.umut-feature-list li i {
  color: var(--accent-gold);
}

.umut-sectors-badge-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.sector-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-navy);
}

.sector-badge i {
  color: var(--accent-gold);
}

.umut-team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.team-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.team-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-gold);
}

.team-card.primary-leader {
  border-color: var(--accent-gold);
  background: linear-gradient(180deg, #ffffff 0%, #fffbeb 100%);
}

.team-avatar-box {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
  color: var(--bg-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--accent-gold);
}

.team-avatar-box.image-avatar {
  overflow: hidden;
  padding: 0;
}

.team-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;

}

/* Profile Photo Card in About / Özgeçmiş Section */
.about-portrait-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 3px solid var(--accent-gold);
  margin-bottom: 2rem;
  max-width: 320px;
  transition: var(--transition);
}

.about-portrait-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.about-portrait-img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.about-portrait-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(0deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0) 100%);
  padding: 1.5rem 1.25rem 0.85rem;
}

.about-portrait-caption h4 {
  color: var(--bg-white);
  font-size: 1.15rem;
  margin-bottom: 0.1rem;
}

.about-portrait-caption span {
  color: var(--accent-gold);
  font-size: 0.85rem;
  font-weight: 600;
}

.team-avatar-initials {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--accent-gold);
}

.team-badge-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--accent-gold-light);
  color: var(--accent-gold-hover);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.team-card h4 {
  font-size: 1.15rem;
  color: var(--primary-navy);
  margin-bottom: 0.2rem;
}

.team-role {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
}

.team-bio {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid, .about-grid, .contact-grid, .umut-company-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .articles-layout-container {
    grid-template-columns: 1fr;
  }
  
  .articles-tree-sidebar {
    position: static;
    order: 2;
  }

  .hero-title {
    font-size: 2.75rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary-navy);
    padding: 2rem;
    border-bottom: 1px solid var(--border-dark);
  }
}

@media (max-width: 576px) {
  .section-title {
    font-size: 2rem;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .modal-container {
    padding: 1.5rem;
  }
}