/* SaaS Strategy Portal - Styles */
:root {
  --bg-primary: #f8f9fa;
  --bg-secondary: #fff;
  --bg-card: #ffffff;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --accent: #0d6efd;
  --accent-hover: #0b5ed7;
  --positive: #198754;
  --negative: #dc3545;
  --sidebar-width: 200px;
}

[data-theme="dark"] {
  --bg-primary: #1a1d21;
  --bg-secondary: #212529;
  --bg-card: #2d3238;
  --text-primary: #e9ecef;
  --text-secondary: #adb5bd;
  --border-color: #495057;
  --accent: #6ea8fe;
  --accent-hover: #5b9afd;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  min-height: 100vh;
  transition: background-color 0.2s, color 0.2s;
}

/* KPI Bar */
.kpi-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.kpi-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.25rem 0.75rem;
  min-width: 70px;
}

.kpi-label {
  color: var(--text-secondary);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-weight: 700;
  font-size: 1rem;
}

.kpi-value.positive {
  color: var(--positive);
}

/* Main Nav */
.main-nav {
  background: var(--bg-secondary) !important;
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0;
}

.main-nav .navbar-brand {
  font-weight: 700;
  color: var(--text-primary);
}

.main-nav .nav-link {
  color: var(--text-secondary);
}

.main-nav .nav-link:hover {
  color: var(--accent);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.hero-desc {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 1rem;
}

.hero-ctas .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
}

.hero-ctas .btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.hero-ctas .btn-outline-primary {
  color: var(--accent);
  border-color: var(--accent);
}

.hero-ctas .btn-outline-primary:hover {
  background: var(--accent);
  color: white;
}

/* Filter Bar */
.filter-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.filter-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.filter-btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

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

.filter-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* Layout */
.layout-wrapper {
  display: flex;
  gap: 2rem;
  padding: 2rem 1rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Sidebar */
.sidebar {
  flex: 0 0 var(--sidebar-width);
  position: sticky;
  top: 80px;
  height: fit-content;
}

.sidebar-nav {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
}

.sidebar-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

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

.sidebar-list li {
  margin-bottom: 0.35rem;
}

.sidebar-list a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
}

.sidebar-list a:hover {
  color: var(--accent);
}

/* Main Content */
.main-content {
  flex: 1;
  min-width: 0;
}

/* Doc Section */
.doc-section {
  margin-bottom: 3rem;
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
}

.section-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

/* Doc Grid */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.doc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  transition: box-shadow 0.2s, transform 0.2s;
}

.doc-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .doc-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.card-tags .badge {
  font-size: 0.65rem;
  font-weight: 600;
}

.doc-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.doc-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.doc-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.doc-meta span {
  display: block;
}

.doc-meta .deps {
  margin-top: 0.35rem;
  font-style: italic;
}

.doc-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.doc-link:hover {
  text-decoration: underline;
}

/* Eğitim Serisi */
.training-section {
  background: var(--bg-primary);
}

.training-modules {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.training-module {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.training-module:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .training-module:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.module-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.module-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.module-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.35rem 0;
}

.module-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

.lesson-list {
  padding: 1rem 1.5rem 1.25rem 2.5rem;
  margin: 0;
  list-style: decimal;
}

.lesson-list li {
  margin-bottom: 0.6rem;
  padding-left: 0.25rem;
}

.lesson-list li:last-child {
  margin-bottom: 0;
}

.lesson-list a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.lesson-list a:hover {
  text-decoration: underline;
}

.lesson-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-left: 0.5rem;
}

.lesson-completed a {
  color: var(--positive) !important;
}

.lesson-check {
  color: var(--positive);
  font-weight: 700;
}

.training-footer {
  border-top: 1px dashed var(--border-color);
}

/* Reading Flows */
.flow-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.flow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
}

.flow-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.flow-card ol {
  padding-left: 1.25rem;
  margin: 0;
}

.flow-card li {
  margin-bottom: 0.5rem;
}

.flow-card a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.flow-card a:hover {
  text-decoration: underline;
}

/* Footer */
.portal-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

/* Filter: Hidden cards */
.doc-card.filter-hidden {
  display: none;
}

/* Responsive */
@media (max-width: 992px) {
  .sidebar {
    display: none;
  }

  .layout-wrapper {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 1.5rem;
  }

  .hero-ctas {
    flex-direction: column;
  }

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

  .flow-cards {
    grid-template-columns: 1fr;
  }

  .kpi-bar .container-fluid {
    gap: 0.5rem !important;
  }

  .kpi-item {
    min-width: 55px;
  }
}