/* ============================================
   PIXEL PRODUCTION — Layout System
   ============================================ */

/* ─── Body & Ambient Background ─── */
body {
  background: var(--bg-deepest);
  position: relative;
  overflow: hidden;
}

.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  background-image: 
    radial-gradient(circle at 15% 50%, var(--primary-glow), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(129, 140, 248, 0.08), transparent 25%);
  animation: ambient-drift 20s ease-in-out infinite alternate;
}

@keyframes ambient-drift {
  0% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.1) translate(2%, 3%); }
  100% { transform: scale(1) translate(-2%, -2%); }
}

/* ─── App Shell ─── */
.app {
  display: flex;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
  background: var(--bg-page);
  position: relative;
  z-index: 1;
}

/* ─── Sidebar ─── */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100dvh;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-slow), min-width var(--transition-slow);
  z-index: var(--z-sticky);
  position: relative;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
  min-width: var(--sidebar-collapsed);
}

.sidebar-header {
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  min-height: var(--topbar-height);
}

.sidebar-logo {
  height: 38px;
  width: auto;
  max-width: 168px;
  object-fit: contain;
  flex-shrink: 0;
}
/* logo.png BEYAZ bir görsel: koyu temada olduğu gibi görünür;
   açık temada koyu griye çevir ki beyaz zeminde net dursun (kutu yok) */
[data-theme="light"] .sidebar-logo { filter: brightness(0) opacity(0.82); }

/* Sidebar kapatma (✕) — temiz cam ikon buton */
.sidebar-close-btn {
  margin-left: auto;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  background: transparent;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}
.sidebar-close-btn:hover {
  background: var(--glass-bg-strong);
  color: var(--text-primary);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-brand {
  opacity: 0;
  width: 0;
}

.sidebar-brand-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.sidebar-brand-sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 400;
}

/* ─── Sidebar Navigation ─── */
.sidebar-nav {
  flex: 1;
  padding: var(--space-lg) var(--space-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px; /* Slightly more gap */
}

.sidebar-section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: var(--space-md) var(--space-md) var(--space-sm);
  margin-top: var(--space-md);
  transition: opacity var(--transition-base);
}
.sidebar-section-label:first-child {
  margin-top: 0;
}

.sidebar.collapsed .sidebar-section-label {
  opacity: 0;
  height: 0;
  padding: 0;
  margin: 0;
  overflow: hidden;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 8px var(--space-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  text-decoration: none;
  user-select: none;
}

.sidebar-link:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.sidebar-link.active {
  background: var(--primary-subtle);
  color: var(--primary-light);
  font-weight: 600;
}
[data-theme="light"] .sidebar-link.active {
  color: var(--primary-dark);
}

.sidebar-link-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--text-lg);
  opacity: 0.7;
  color: inherit;
}

.sidebar-link.active .sidebar-link-icon {
  opacity: 1;
}

/* SVG stroke styling for icons */
.sidebar-link-icon svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

.sidebar-link-text {
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-link-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar-link-badge {
  margin-left: auto;
  background: var(--primary);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  min-width: 20px;
  text-align: center;
  line-height: 1.2;
}

.sidebar.collapsed .sidebar-link-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  margin: 0;
  padding: 1px 4px;
  font-size: 9px;
  min-width: 16px;
}

/* ─── Sidebar Footer ─── */
.sidebar-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.sidebar-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-primary);
  flex-shrink: 0;
}

.sidebar-user-info {
  overflow: hidden;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-user-info {
  opacity: 0;
  width: 0;
}

.sidebar-user-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.sidebar-user-role {
  font-size: var(--text-xs);
  color: var(--text-muted);
  white-space: nowrap;
}

.sidebar-toggle {
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
  color: var(--text-muted);
}
.sidebar-toggle svg {
  width: 14px;
  height: 14px;
}

.sidebar-toggle:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* ─── Main Content ─── */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ─── Mobile Header ─── */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  border-bottom: 1px solid var(--border);
  height: var(--topbar-height);
  min-height: var(--topbar-height);
}

.mobile-logo {
  height: 32px;
  object-fit: contain;
  filter: brightness(1);
}

[data-theme="light"] .mobile-logo {
  filter: invert(1);
}

/* ─── Top Bar ─── */
.topbar {
  height: var(--topbar-height);
  min-height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-2xl);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  gap: var(--space-xl);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.topbar-page-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.topbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.topbar-breadcrumb span {
  color: var(--text-primary);
}

/* ─── Global Search ─── */
.topbar-search {
  flex: 1;
  max-width: 400px; /* slightly smaller for minimalist look */
  position: relative;
}

.topbar-search-input {
  width: 100%;
  height: 36px;
  padding: 0 var(--space-lg) 0 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.topbar-search-input::placeholder {
  color: var(--text-muted);
}

.topbar-search-input:focus {
  border-color: var(--primary-border);
  box-shadow: 0 0 0 2px var(--primary-glow);
  background: var(--bg-elevated);
}
[data-theme="light"] .topbar-search-input:focus {
  background: var(--bg-surface);
}

.topbar-search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
}
.topbar-search-icon svg {
  width: 16px;
  height: 16px;
}

.topbar-search-shortcut {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-weight: 500;
}

/* ─── Topbar Actions ─── */
.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.topbar-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
  background: transparent;
  border: 1px solid transparent;
}
.topbar-btn svg {
  width: 18px;
  height: 18px;
}

.topbar-btn:hover {
  background: var(--bg-surface);
  border-color: var(--border);
  color: var(--text-primary);
}

.topbar-btn .badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--primary);
  border: 2px solid var(--bg-page);
}

/* ─── Content Area ─── */
.content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-2xl);
  background: var(--bg-page);
}

/* ─── Page Header ─── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.page-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: 4px;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ─── Grid Layouts ─── */
.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); }

/* ─── Responsive ─── */
@media (max-width: 1200px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -100%;
    width: 280px;
    z-index: var(--z-modal);
    transition: left var(--transition-slow);
  }
  .sidebar.mobile-open {
    left: 0;
  }
  .sidebar-toggle {
    display: none;
  }
  .mobile-header {
    display: flex;
  }
  .topbar {
    display: none;
  }
  .mobile-search-container {
    display: block !important;
  }
  .content {
    padding: var(--space-lg);
  }
  .grid-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-cards {
    grid-template-columns: 1fr;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

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

/* ============================================
   LOGIN SCREEN
   ============================================ */
.login-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-page);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  animation: fadeIn 0.4s ease;
  overflow-y: auto;
  padding: var(--space-xl);
}

.login-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
  text-align: center;
  margin: auto;
}

.login-logo {
  width: auto;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-2xl);
}

.login-logo img {
  height: 100%;
  object-fit: contain;
}

[data-theme="light"] .login-logo img {
  filter: invert(1);
}

.login-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.02em;
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
}

.login-form {
  text-align: left;
}

/* ═══════════════════════════════════════════════════════
   LIQUID GLASS — kabuk (app / sidebar / topbar / arama)
   ═══════════════════════════════════════════════════════ */
.app {
  background: var(--ambient);
  background-attachment: fixed;
}
.main { background: transparent; }
.content { background: transparent; }

/* Sidebar: dikey cam panel + speküler kenar */
.sidebar {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(165%);
  backdrop-filter: blur(var(--glass-blur)) saturate(165%);
  border-right: 1px solid var(--glass-border);
  box-shadow: var(--glass-inset), 1px 0 24px rgba(0,0,0,0.10);
}

/* Topbar: yatay cam çubuk (yapışkan, arkası bulanık) */
.topbar {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(165%);
  backdrop-filter: blur(var(--glass-blur)) saturate(165%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-inset);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}
.mobile-header {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(165%);
  backdrop-filter: blur(var(--glass-blur)) saturate(165%);
  border-bottom: 1px solid var(--glass-border);
}

/* Arama alanı: cam hap */
.topbar-search-input {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
}
[data-theme="light"] .topbar-search-input { background: rgba(255,255,255,0.55); }
.topbar-search-input:focus {
  background: var(--glass-bg-strong);
  border-color: var(--border-active);
  box-shadow: 0 0 0 3px var(--primary-glow), var(--glass-inset);
}

/* Topbar aksiyon butonları: cam yuvarlaklar */
.topbar-btn:hover {
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: var(--glass-inset);
}

/* Sidebar aktif bağlantı: parlak cam hap */
.sidebar-link.active {
  background: linear-gradient(135deg, rgba(99,102,241,0.85), rgba(139,92,246,0.75));
  color: #fff;
  box-shadow: 0 6px 18px rgba(99,102,241,0.35), var(--glass-inset);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.sidebar-link.active::before { display: none; }
.sidebar-link:hover:not(.active) {
  background: rgba(255,255,255,0.06);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
[data-theme="light"] .sidebar-link:hover:not(.active) { background: rgba(255,255,255,0.5); }

/* Giriş ekranı: ambians sahne + yüzen cam kart */
.login-screen { background: var(--ambient); }
.login-card {
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 24px 70px rgba(0,0,0,0.35), var(--glass-inset);
}