/* ===== CSS Variables - Light / Dark ===== */
:root {
  --header-height: 72px;
  --bg-gradient: linear-gradient(135deg, #e0e7ff 0%, #fce7f3 50%, #e0f2fe 100%);
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
  --text-primary: #1a1d23;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --accent: #c0392b;
  --accent-hover: #a93226;
  --nav-link: #1f2937;
  --dropdown-bg: rgba(255, 255, 255, 0.85);
  --footer-bg: rgba(26, 29, 35, 0.85);
  --footer-text: #d1d5db;
  --card-bg: rgba(255, 255, 255, 0.5);
  --input-bg: rgba(255, 255, 255, 0.7);
  --code-bg: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #0f172a 100%);
  --glass-bg: rgba(30, 41, 59, 0.55);
  --glass-border: rgba(148, 163, 184, 0.15);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent: #ef4444;
  --accent-hover: #f87171;
  --nav-link: #e2e8f0;
  --dropdown-bg: rgba(30, 41, 59, 0.9);
  --footer-bg: rgba(15, 23, 42, 0.9);
  --footer-text: #94a3b8;
  --card-bg: rgba(30, 41, 59, 0.5);
  --input-bg: rgba(15, 23, 42, 0.6);
  --code-bg: rgba(255, 255, 255, 0.08);
}


/* User theme overrides from Ayarlar */
:root {
  --accent: var(--user-accent, #c0392b);
  --accent-hover: var(--user-accent-hover, #a93226);
  --bg-gradient: linear-gradient(135deg, var(--user-bg-light-1, #e0e7ff) 0%, var(--user-bg-light-2, #e0f2fe) 100%);
  --text-primary: var(--user-text-light, #1a1d23);
  --text-secondary: var(--user-muted-light, #6b7280);
  --text-muted: var(--user-muted-light, #6b7280);
  --nav-link: var(--user-text-light, #1f2937);
}
[data-theme="dark"] {
  --accent: var(--user-accent, #ef4444);
  --accent-hover: var(--user-accent-hover, #f87171);
  --bg-gradient: linear-gradient(135deg, var(--user-bg-dark-1, #0f172a) 0%, var(--user-bg-dark-2, #1e1b4b) 100%);
  --text-primary: var(--user-text-dark, #f1f5f9);
  --text-secondary: var(--user-muted-dark, #cbd5e1);
  --text-muted: var(--user-muted-dark, #94a3b8);
  --nav-link: var(--user-text-dark, #e2e8f0);
}

.module-styled {
  border-radius: 1.25rem;
}
.module-styled .hero-subtitle,
.module-styled .section-subtitle,
.module-styled .text-secondary,
.module-styled .text-muted {
  color: inherit;
  opacity: 0.85;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.4s ease, color 0.3s ease;
}

/* ===== Frosted Glass utilities ===== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-strong {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0;
  transition: background 0.3s ease, min-height 0.2s ease, color 0.3s ease;
  /* Panelden ayarlanan başlık arka planı (hafif şeffaf + blur korunur) */
  background: color-mix(in srgb, var(--user-header-bg, #ffffff) 78%, transparent) !important;
  color: var(--user-header-text, #1a1d23);
}
[data-theme="dark"] .site-header {
  background: color-mix(in srgb, var(--user-header-bg-dark, #1e293b) 78%, transparent) !important;
  color: var(--user-header-text-dark, #f1f5f9);
}
.site-header .site-name,
.site-header .navbar-nav .nav-link,
.site-header .navbar-brand,
.site-header .nav-link {
  color: var(--user-header-text, #1a1d23) !important;
}
[data-theme="dark"] .site-header .site-name,
[data-theme="dark"] .site-header .navbar-nav .nav-link,
[data-theme="dark"] .site-header .navbar-brand,
[data-theme="dark"] .site-header .nav-link {
  color: var(--user-header-text-dark, #f1f5f9) !important;
}
.site-header .navbar-nav .nav-link:hover,
.site-header .navbar-nav .nav-link.active {
  color: var(--accent) !important;
}
[data-theme="dark"] .site-header .navbar-nav .nav-link:hover,
[data-theme="dark"] .site-header .navbar-nav .nav-link.active {
  color: var(--accent) !important;
}
.site-header .navbar {
  width: 100%;
  min-height: var(--header-height);
}
.site-header .navbar > .container {
  min-height: var(--header-height);
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}
.brand-block img {
  max-height: calc(var(--header-height) - 20px);
  max-width: 110px;
  object-fit: contain;
  border-radius: 8px;
}
.brand-text .site-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-text {
  min-width: 0;
  max-width: min(420px, 50vw);
}
.brand-text .site-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
  white-space: normal;
  overflow: visible;
  text-overflow: unset;
  max-width: none;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

/* Nav */
.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--nav-link) !important;
  padding: 0.45rem 0.85rem !important;
  border-radius: 0.5rem;
  transition: background 0.2s, color 0.2s;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--accent) !important;
  background: rgba(192, 57, 43, 0.08);
}
[data-theme="dark"] .navbar-nav .nav-link:hover {
  background: rgba(239, 68, 68, 0.12);
}

.dropdown-menu {
  background: var(--dropdown-bg) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border) !important;
  box-shadow: var(--glass-shadow);
  border-radius: 0.75rem;
  padding: 0.4rem;
}
.dropdown-item {
  color: var(--text-primary) !important;
  border-radius: 0.5rem;
  padding: 0.45rem 0.9rem;
}
.dropdown-item:hover {
  background: rgba(192, 57, 43, 0.1) !important;
  color: var(--accent) !important;
}

/* Theme toggle */
.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  flex-shrink: 0;
}
.theme-toggle:hover {
  transform: scale(1.08);
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}
.theme-toggle i { font-size: 1.15rem; }

/* Navbar toggler */
.navbar-toggler {
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
}
.navbar-toggler-icon {
  filter: invert(0);
}
[data-theme="dark"] .navbar-toggler-icon {
  filter: invert(1);
}

/* ===== Page content ===== */
.page-content {
  flex: 1;
  padding: 2.5rem 0 3rem;
}
.page-content .content-card {
  border-radius: 1.25rem;
  padding: 2rem 2.25rem;
  max-width: 900px;
  margin: 0 auto;
}
.page-content h1 {
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}
.page-content p, .page-content li {
  color: var(--text-secondary);
  line-height: 1.7;
}
.page-content a { color: var(--accent); }
.page-content code {
  background: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 0.3rem;
  font-size: 0.9em;
}
.page-content img { max-width: 100%; height: auto; border-radius: 0.75rem; }

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
  padding: 1.75rem 0;
  background: var(--footer-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--glass-border);
  color: var(--footer-text);
  text-align: center;
}
.site-footer p { margin: 0.25rem 0; }

/* ===== 404 ===== */
.error-page {
  text-align: center;
  padding: 4rem 1rem;
}
.error-page .display-1 {
  font-weight: 800;
  opacity: 0.25;
  color: var(--text-primary);
}

/* ===== Responsive ===== */


/* Desktop: alt menü hover ile açılsın */
@media (min-width: 992px) {
  .navbar-nav .nav-item.dropdown {
    position: relative;
  }
  .navbar-nav .dropdown > .dropdown-menu {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
    margin-top: 0;
    top: 100%;
  }
  /* Köprü: menü ile alt menü arasında boşlukta hover kaybolmasın */
  .navbar-nav .dropdown > .dropdown-menu::before {
    content: "";
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
  }
  .navbar-nav .dropdown:hover > .dropdown-menu,
  .navbar-nav .dropdown:focus-within > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  /* Bootstrap click toggle ile çakışmasın diye show class da aynı görünsün */
  .navbar-nav .dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
}

@media (max-width: 991px) {
  .brand-text {
    max-width: min(280px, 55vw);
  }
  .brand-text .site-desc {
    display: block;
    font-size: 0.7rem;
    line-height: 1.3;
  }
  .navbar-collapse {
    margin-top: 0.75rem;
    padding: 0.75rem;
    border-radius: 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
  }
}
@media (max-width: 576px) {
  .page-content .content-card {
    padding: 1.5rem 1.25rem;
    border-radius: 1rem;
  }
}

/* ===== Blocks ===== */
.block-hero {
  padding: 3.5rem 2rem;
  border-radius: 1.25rem;
}
.hero-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}
.text-left .hero-subtitle { margin-left: 0; }

.section-title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.section-subtitle {
  color: var(--text-muted);
  margin-bottom: 0;
}

.btn-accent {
  background: var(--accent);
  color: #fff !important;
  border: none;
  border-radius: 0.6rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  transition: background 0.2s, transform 0.15s;
}
.btn-accent:hover {
  background: var(--accent-hover);
  color: #fff !important;
  transform: translateY(-1px);
}

.feature-card {
  border-radius: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
  transform: translateY(-4px);
}
.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto;
  border-radius: 1rem;
  background: rgba(192, 57, 43, 0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
[data-theme="dark"] .feature-icon {
  background: rgba(239, 68, 68, 0.15);
}

.block-cta {
  border-radius: 1.25rem;
}

.slider-img {
  max-height: 420px;
  object-fit: cover;
}
.slider-placeholder {
  height: 280px;
  background: var(--code-bg);
}
.carousel-caption {
  background: rgba(0,0,0,0.45);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  left: 10%;
  right: 10%;
  bottom: 1.5rem;
}

.form-control-glass {
  background: var(--input-bg) !important;
  border: 1px solid var(--glass-border) !important;
  color: var(--text-primary) !important;
  border-radius: 0.6rem;
}
.form-control-glass:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 0.2rem rgba(192, 57, 43, 0.2);
}
.form-label {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.stat-label {
  font-size: 0.9rem;
}
.stat-card {
  border-radius: 1rem;
}

.glass-divider {
  border: none;
  height: 1px;
  background: var(--glass-border);
  opacity: 1;
}

.alert-success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #166534;
  border-radius: 0.6rem;
}
[data-theme="dark"] .alert-success {
  color: #86efac;
}
.alert-danger {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #991b1b;
  border-radius: 0.6rem;
}
[data-theme="dark"] .alert-danger {
  color: #fca5a5;
}