/* ==========================================================================
   LGS DERSLER PORTALI — KURUMSAL VE ETKİLEŞİMLİ STİL DOSYASI
   Renk Paleti: Cognitive EdTech Labs / Eğitim Standartları
   ========================================================================== */

:root {
  --bg-main: #efeeea;
  --bg-card: #ffffff;
  --bg-alt: #f7f6f3;
  --navy-dark: #052a5b;
  --navy-medium: #0d3b7a;
  --navy-subtle: #e8eef8;
  --gold: #eec660;
  --gold-hover: #dfb549;
  --gold-light: #fef8e8;
  --gold-border: #edd58d;
  --green: #1b7f4c;
  --green-light: #e8f5ee;
  --green-border: #a3dbb9;
  --red: #c93b2b;
  --red-light: #fbeeed;
  --red-border: #f1b3ad;
  --text-dark: #1b263b;
  --text-muted: #5a6b82;
  --border-color: #dcd7ce;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(5, 42, 91, 0.06);
  --shadow-md: 0 6px 20px rgba(5, 42, 91, 0.09);
  --shadow-lg: 0 12px 36px rgba(5, 42, 91, 0.14);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.portal-header {
  background: var(--navy-dark);
  color: #ffffff;
  padding: 24px 20px;
  box-shadow: 0 4px 20px rgba(5, 42, 91, 0.25);
  border-bottom: 4px solid var(--gold);
}

.portal-header-container {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.portal-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.portal-logo-badge {
  background: var(--gold);
  color: var(--navy-dark);
  font-weight: 900;
  font-size: 16px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.8px;
}

.portal-titles h1 {
  font-size: 24px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.3px;
}

.portal-titles p {
  font-size: 14px;
  color: #b0c4de;
}

.portal-search-bar {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 30px;
  padding: 8px 18px;
  width: 100%;
  max-width: 340px;
  transition: var(--transition);
}

.portal-search-bar:focus-within {
  background: #ffffff;
  border-color: var(--gold);
}

.portal-search-bar:focus-within input {
  color: var(--text-dark);
}

.portal-search-bar:focus-within input::placeholder {
  color: var(--text-muted);
}

.portal-search-bar input {
  background: none;
  border: none;
  outline: none;
  color: #ffffff;
  font-size: 14px;
  width: 100%;
  font-family: inherit;
}

.portal-search-bar input::placeholder {
  color: #cbd5e0;
}

/* Hero Section */
.portal-hero {
  background: linear-gradient(135deg, #ffffff 0%, var(--bg-alt) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 32px 20px;
}

.hero-container {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.hero-text h2 {
  font-size: 26px;
  color: var(--navy-dark);
  font-weight: 800;
  margin-bottom: 8px;
}

.hero-text p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 680px;
}

.hero-stats-deck {
  display: flex;
  gap: 16px;
}

.hero-stat-pill {
  background: #ffffff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  min-width: 110px;
}

.hero-stat-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--navy-dark);
}

.hero-stat-lbl {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Tabs Bar */
.courses-tabs-nav {
  background: #ffffff;
  border-bottom: 2px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.tabs-container {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0 16px;
}

.tabs-container::-webkit-scrollbar {
  display: none;
}

.course-tab-btn {
  background: none;
  border: none;
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-bottom: 4px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  white-space: nowrap;
}

.course-tab-btn:hover {
  color: var(--navy-dark);
  background: var(--bg-alt);
}

.course-tab-btn.active {
  color: var(--navy-dark);
  border-bottom-color: var(--gold);
  background: var(--navy-subtle);
}

.tab-icon {
  font-size: 18px;
}

.tab-badge {
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

.course-tab-btn.active .tab-badge {
  background: var(--navy-dark);
  color: var(--gold);
}

/* Main Content */
.portal-main {
  max-width: 1240px;
  margin: 32px auto;
  padding: 0 20px;
  flex: 1;
  width: 100%;
}

.course-meta-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.course-title-group h3 {
  font-size: 22px;
  color: var(--navy-dark);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.course-title-group p {
  color: var(--text-muted);
  font-size: 14px;
}

/* Topic Cards Grid */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 22px;
}

@media (max-width: 480px) {
  .topics-grid {
    grid-template-columns: 1fr;
  }
}

.topic-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--navy-dark);
}

.topic-card.status-ready {
  border-top: 6px solid var(--green);
}

.topic-card.status-template {
  border-top: 6px solid var(--gold);
}

.topic-card.status-upcoming {
  border-top: 6px solid #cbd5e0;
  opacity: 0.88;
}

.topic-card-top {
  margin-bottom: 16px;
}

.card-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.badge-status {
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-status.ready {
  background: var(--green-light);
  color: var(--green);
  border: 1px solid var(--green-border);
}

.badge-status.template {
  background: var(--gold-light);
  color: #7a5c05;
  border: 1px solid var(--gold-border);
}

.badge-status.upcoming {
  background: #edf2f7;
  color: #718096;
  border: 1px solid #cbd5e0;
}

.topic-stats-tag {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-muted);
}

.topic-card h4 {
  font-size: 18px;
  color: var(--navy-dark);
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.35;
}

.topic-card p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.55;
}

.topic-card-bottom {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.btn-launch {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  font-family: inherit;
  border: none;
}

.btn-launch.btn-primary {
  background: var(--navy-dark);
  color: #ffffff;
}

.btn-launch.btn-primary:hover {
  background: var(--navy-medium);
  transform: translateX(3px);
}

.btn-launch.btn-gold {
  background: var(--gold);
  color: var(--navy-dark);
}

.btn-launch.btn-gold:hover {
  background: var(--gold-hover);
  transform: translateX(3px);
}

.btn-launch.btn-outline {
  background: transparent;
  color: var(--navy-dark);
  border: 1.5px solid var(--border-color);
}

.btn-launch.btn-outline:hover {
  background: var(--bg-alt);
  border-color: var(--navy-dark);
}

/* Modal */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(5, 42, 91, 0.65);
  backdrop-filter: blur(4px);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.show {
  display: flex;
}

.modal-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 30px;
  border: 2px solid var(--navy-dark);
  box-shadow: var(--shadow-lg);
  animation: modalScale 0.25s ease-out;
  position: relative;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-icon-badge {
  font-size: 44px;
  margin-bottom: 12px;
}

.modal-box h3 {
  font-size: 20px;
  color: var(--navy-dark);
  font-weight: 800;
  margin-bottom: 8px;
}

.modal-box p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.6;
}

/* Footer */
.portal-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 28px 20px;
  margin-top: 48px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.portal-footer strong {
  color: var(--navy-dark);
}

/* ==========================================================================
   LİSANS & PAYWALL STİLLERİ
   ========================================================================== */
.portal-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-license-header {
  background: var(--gold);
  color: var(--navy-dark);
  border: 1.5px solid #d4af37;
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  font-family: inherit;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-license-header:hover {
  background: var(--gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(238, 198, 96, 0.35);
}

.btn-license-header.licensed {
  background: #1b7f4c;
  color: #ffffff;
  border-color: #27ae60;
}

.btn-license-header.licensed:hover {
  background: #15623a;
}

/* Rozet Çeşitleri */
.badge-status.premium {
  background: #fff8e6;
  color: #925c00;
  border: 1.5px solid #eec660;
  font-weight: 800;
}

.badge-status.unlocked {
  background: #e6fffa;
  color: #1b7f4c;
  border: 1.5px solid #38b2ac;
  font-weight: 800;
}

.badge-status.showcase {
  background: #ebf8ff;
  color: #2b6cb0;
  border: 1.5px solid #90cdf4;
  font-weight: 800;
}

.topic-card.status-premium {
  border-top: 6px solid #eec660;
}

.topic-card.status-premium:hover {
  border-color: #d4af37;
}

.topic-card.status-unlocked {
  border-top: 6px solid var(--green);
}

/* Lisans Aktivasyon Modalı */
.license-modal-box {
  max-width: 520px;
}

.license-form-card {
  background: var(--bg-alt);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.license-input-row {
  display: flex;
  gap: 10px;
  flex-direction: column;
}

@media (min-width: 480px) {
  .license-input-row {
    flex-direction: row;
  }
}

.license-input-row input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--navy-dark);
  outline: none;
  font-family: inherit;
  text-transform: uppercase;
}

.license-input-row input:focus {
  border-color: var(--navy-dark);
  box-shadow: 0 0 0 3px rgba(5, 42, 91, 0.15);
}

.license-feedback {
  margin-top: 10px;
  font-size: 13.5px;
  font-weight: 600;
  min-height: 20px;
}

.license-feedback.error {
  color: var(--red);
}

.license-feedback.success {
  color: var(--green);
}

.license-modal-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.license-demo-chip {
  background: var(--gold-light);
  border: 1px solid var(--gold-border);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12.5px;
  color: #744210;
}

.license-demo-chip code {
  background: #ffffff;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 800;
  border: 1px solid #d4af37;
  letter-spacing: 0.5px;
}

.purchase-cta-box {
  margin-top: 6px;
  margin-bottom: 18px;
  padding: 16px;
  background: linear-gradient(135deg, #fffdf5 0%, #fff9e6 100%);
  border: 1.5px solid #d4af37;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.15);
}

.btn-purchase-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 13px 22px;
  background: linear-gradient(135deg, #eec660 0%, #d4af37 100%);
  color: #052a5b !important;
  font-family: inherit;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid #b8860b;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.25);
  box-sizing: border-box;
}

.btn-purchase-gold:hover {
  background: linear-gradient(135deg, #f7d780 0%, #dfb840 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(212, 175, 55, 0.35);
  color: #031b3a !important;
}

.purchase-micro-text {
  font-size: 12px;
  color: #744210;
  line-height: 1.5;
  margin: 10px auto 0 auto;
  max-width: 440px;
  font-weight: 500;
}

/* ==========================================================================
   MODÜLER DASHBOARD & İKİ KATMANLI HİYERARŞİ STİLLERİ
   ÜST KATMAN: Bilişsel Kalibrasyon Stüdyoları (Ana Vitrin)
   ALT KATMAN: LGS Atölye ve Konu Destek Kütüphanesi (İkincil Alan)
   ========================================================================== */

/* Üst Katman Konteyneri */
.studios-section {
  max-width: 1240px;
  margin: 36px auto 0 auto;
  padding: 0 20px;
  width: 100%;
}

.studios-header {
  margin-bottom: 24px;
}

.studio-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--navy-dark);
  color: var(--gold);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
}

.studios-title {
  font-size: 26px;
  font-weight: 900;
  color: var(--navy-dark);
  letter-spacing: -0.4px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.studios-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 820px;
  line-height: 1.6;
}

/* 3'lü Stüdyo Grid */
.studios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 18px;
}

@media (max-width: 992px) {
  .studios-grid {
    grid-template-columns: 1fr;
  }
}

.studio-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* AKTİF KART: Vurgulu ve Parlayan */
.studio-card.studio-active {
  background: linear-gradient(180deg, #ffffff 0%, #fffdf8 100%);
  border: 2.5px solid var(--gold);
  box-shadow: 0 8px 30px rgba(238, 198, 96, 0.28), 0 2px 10px rgba(5, 42, 91, 0.08);
  position: relative;
}

.studio-card.studio-active::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--gold) 0%, #ffdf7a 50%, var(--gold) 100%);
}

.studio-card.studio-active:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 42px rgba(238, 198, 96, 0.42), 0 6px 18px rgba(5, 42, 91, 0.12);
  border-color: #dfb549;
}

/* Parlayan Canlı Rozeti */
.studio-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.studio-badge-active {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #e8f5ee;
  color: var(--green);
  border: 1.5px solid var(--green-border);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 0 12px rgba(27, 127, 76, 0.15);
}

.studio-live-dot {
  width: 8px;
  height: 8px;
  background-color: var(--green);
  border-radius: 50%;
  display: inline-block;
  animation: studio-pulse-dot 1.8s infinite;
}

@keyframes studio-pulse-dot {
  0% { transform: scale(0.9); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.4; }
  100% { transform: scale(0.9); opacity: 1; }
}

/* YAKINDA KARTLARI */
.studio-card.studio-locked {
  background: #fbfbfb;
  border: 1.5px dashed #cbd5e0;
  opacity: 0.90;
}

.studio-card.studio-locked:hover {
  opacity: 1;
  background: #ffffff;
  border-color: #a0aec0;
  box-shadow: var(--shadow-md);
}

.studio-badge-locked {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f1f4f8;
  color: #4a5568;
  border: 1.5px solid #cbd5e0;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

/* Kart İçerik Elemanları */
.studio-icon-header {
  font-size: 34px;
  margin-bottom: 12px;
  display: inline-block;
}

.studio-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--navy-dark);
  line-height: 1.35;
  margin-bottom: 12px;
}

.studio-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.studio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.studio-tag-pill {
  background: var(--bg-alt);
  color: var(--navy-dark);
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.studio-card.studio-active .studio-tag-pill {
  background: var(--gold-light);
  border-color: var(--gold-border);
  color: #744210;
}

/* Kart Eylem Butonları */
.studio-btn {
  width: 100%;
  padding: 13px 20px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 800;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-sizing: border-box;
  transition: var(--transition);
  font-family: inherit;
}

.studio-btn-active {
  background: linear-gradient(135deg, var(--gold) 0%, #dfb549 100%);
  color: var(--navy-dark) !important;
  border: 1.5px solid #c99b24;
  box-shadow: 0 4px 16px rgba(238, 198, 96, 0.38);
  cursor: pointer;
}

.studio-btn-active:hover {
  background: linear-gradient(135deg, #f7d780 0%, #eec660 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(238, 198, 96, 0.48);
}

.studio-btn-disabled {
  background: #edf2f7;
  color: #718096;
  border: 1px solid #cbd5e0;
  cursor: not-allowed;
  opacity: 0.85;
}

/* Katmanlar Arası Şık Ayırıcı */
.portal-layer-divider {
  max-width: 1240px;
  margin: 54px auto 36px auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.portal-layer-divider .divider-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, rgba(220, 215, 206, 0.2) 0%, var(--border-color) 50%, rgba(220, 215, 206, 0.2) 100%);
}

.portal-layer-divider .divider-chip {
  background: #ffffff;
  border: 1.5px solid var(--border-color);
  padding: 7px 18px;
  border-radius: 24px;
  font-size: 12px;
  font-weight: 800;
  color: var(--navy-dark);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Alt Katman: Kütüphane Başlığı */
.library-header-container {
  max-width: 1240px;
  margin: 0 auto 20px auto;
  padding: 0 20px;
}

.library-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--navy-subtle);
  color: var(--navy-dark);
  border: 1px solid #c8d8f0;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 10px;
}

.library-title {
  font-size: 24px;
  font-weight: 900;
  color: var(--navy-dark);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.library-desc {
  font-size: 14.5px;
  color: var(--text-muted);
  max-width: 820px;
}

/* ==========================================================================
   İkili Marka Mimarisi & Bilişsel Laboratuvar Vitrin Stilleri
   ========================================================================== */

/* Hero İkili Marka Kanatları */
.hero-brand-wings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
  margin-bottom: 8px;
}

@media (max-width: 768px) {
  .hero-brand-wings {
    grid-template-columns: 1fr;
  }
}

.brand-wing-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.brand-wing-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.brand-wing-card .wing-icon {
  font-size: 24px;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 2px;
}

.brand-wing-card .wing-content strong {
  display: block;
  font-size: 13.5px;
  font-weight: 800;
  color: var(--navy-dark);
  margin-bottom: 4px;
}

.brand-wing-card .wing-content p {
  font-size: 12.5px !important;
  color: var(--text-muted) !important;
  margin: 0 !important;
  line-height: 1.45 !important;
}

/* Konu Kartı Çıkmış Soru Rozeti */
.topic-card-exam-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1d4ed8;
  font-size: 11.5px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
}

/* Örnek Bilişsel Laboratuvar Önizleme Bölümü */
.preview-showcase-section {
  max-width: 1240px;
  margin: 0 auto 40px auto;
  padding: 0 20px;
}

.preview-showcase-container {
  background: #ffffff;
  border: 2px solid #e2e8f0;
  border-radius: 20px;
  padding: 28px 32px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.05);
  position: relative;
  overflow: hidden;
}

.preview-showcase-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #d97706 0%, #2563eb 50%, #16a34a 100%);
}

.preview-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.preview-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--navy-dark);
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border-radius: 999px;
  text-transform: uppercase;
}

.preview-topic-tag {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--navy-dark);
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 5px 12px;
  border-radius: 8px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

@media (max-width: 900px) {
  .preview-grid {
    grid-template-columns: 1fr;
  }
}

.preview-card {
  border-radius: 14px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.preview-card.danger {
  background: #fef2f2;
  border: 1.5px solid #fecaca;
}

.preview-card.success {
  background: #f0fdf4;
  border: 1.5px solid #bbf7d0;
}

.preview-card.gold {
  background: #fffbeb;
  border: 1.5px solid #fde68a;
}

.preview-card-header {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-card-header.danger { color: #b91c1c; }
.preview-card-header.success { color: #15803d; }
.preview-card-header.gold { color: #b45309; }

.preview-card-body {
  font-size: 13.5px;
  color: #334155;
  line-height: 1.55;
  margin-bottom: 12px;
}

.preview-tip {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 6px;
  line-height: 1.45;
}

.preview-tip.danger {
  background: rgba(185, 28, 28, 0.08);
  color: #991b1b;
}

.preview-tip.success {
  background: rgba(21, 128, 61, 0.08);
  color: #166534;
}

.preview-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.preview-steps li {
  font-size: 12.5px;
  color: #451a03;
  line-height: 1.45;
  background: rgba(245, 158, 11, 0.1);
  padding: 6px 10px;
  border-radius: 6px;
  border-left: 3px solid #d97706;
}

.preview-footer-bar {
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  border: 1.5px solid #dbeafe;
  border-radius: 12px;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.preview-footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: #1e3a8a;
}

.exam-archive-pill {
  background: #1d4ed8;
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.gate-pill {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #334155;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 8px;
}