/* ============================================
   MERKEZİ TEMA SİSTEMİ - Dark/Light Mode
   Tüm sayfalarda kullanılacak tek kaynak
   ============================================ */

/* ====== LIGHT MODE (Varsayılan) ====== */
:root {
  /* Renkler */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-hover: #f8fafc;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  
  --border-primary: #e2e8f0;
  --border-secondary: #cbd5e1;
  --border-focus: #2563eb;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-active: #1e40af;
  --primary-light: #dbeafe;
  --primary-dark: #1e3a8a;
  
  --success: #16a34a;
  --success-light: #dcfce7;
  --success-dark: #15803d;
  
  --warning: #d97706;
  --warning-light: #fef3c7;
  --warning-dark: #b45309;
  
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --danger-dark: #b91c1c;
  
  --chip-bg: #eef2ff;
  --chip-border: #c7d2fe;
  --chip-text: #3730a3;
  
  /* Gölgeler */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 10px 20px rgba(15, 23, 42, 0.08);
  --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.12);
  
  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Backdrop */
  --backdrop-bg: rgba(248, 250, 252, 0.8);
  --backdrop-blur: blur(8px);
}

/* ====== DARK MODE ====== */
html[data-theme="dark"] {
  /* Renkler */
  --bg-primary: #0b0f16;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --bg-hover: #1e293b;
  
  --text-primary: #e5e7eb;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;
  
  --border-primary: #1f2937;
  --border-secondary: #334155;
  --border-focus: #3b82f6;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-active: #1d4ed8;
  --primary-light: #1e3a8a;
  --primary-dark: #1e40af;
  
  --success: #22c55e;
  --success-light: #166534;
  --success-dark: #15803d;
  
  --warning: #f59e0b;
  --warning-light: #78350f;
  --warning-dark: #d97706;
  
  --danger: #ef4444;
  --danger-light: #7f1d1d;
  --danger-dark: #dc2626;
  
  --chip-bg: #1e293b;
  --chip-border: #334155;
  --chip-text: #a5b4fc;
  
  /* Gölgeler */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
  
  /* Backdrop */
  --backdrop-bg: rgba(15, 23, 42, 0.8);
  --backdrop-blur: blur(8px);
}

/* ====== SİSTEM TERCİHİNE GÖRE OTOMATİK (İlk yüklemede) ====== */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg-primary: #0b0f16;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --bg-hover: #1e293b;
    
    --text-primary: #e5e7eb;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;
    
    --border-primary: #1f2937;
    --border-secondary: #334155;
    --border-focus: #3b82f6;
    
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-active: #1d4ed8;
    --primary-light: #1e3a8a;
    --primary-dark: #1e40af;
    
    --success: #22c55e;
    --success-light: #166534;
    --success-dark: #15803d;
    
    --warning: #f59e0b;
    --warning-light: #78350f;
    --warning-dark: #d97706;
    
    --danger: #ef4444;
    --danger-light: #7f1d1d;
    --danger-dark: #dc2626;
    
    --chip-bg: #1e293b;
    --chip-border: #334155;
    --chip-text: #a5b4fc;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    
    --backdrop-bg: rgba(15, 23, 42, 0.8);
  }
}

/* ====== TEMEL BODY STİLLERİ ====== */
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ====== KARTLAR ====== */
.card,
.container {
  background-color: var(--bg-secondary);
  border-color: var(--border-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* ====== INPUT VE FORM ELEMENTLERİ ====== */
input,
select,
textarea {
  background-color: var(--bg-secondary);
  border-color: var(--border-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--border-focus);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ====== BUTONLAR ====== */
.button,
button {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.1s ease;
}

.button.primary,
button.primary {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--text-inverse);
}

.button.primary:hover,
button.primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.button.ghost,
button.ghost {
  background-color: var(--bg-secondary);
  border-color: var(--border-primary);
  color: var(--text-primary);
}

.button.ghost:hover,
button.ghost:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-secondary);
}

/* ====== TABLOLAR ====== */
table {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

thead th {
  background-color: var(--bg-tertiary);
  border-bottom-color: var(--border-primary);
  color: var(--text-primary);
}

tbody td {
  border-bottom-color: var(--border-primary);
  color: var(--text-primary);
}

tbody tr:hover {
  background-color: var(--bg-hover);
}

tbody tr:nth-child(even) {
  background-color: var(--bg-tertiary);
}

/* ====== CHIPLER ====== */
.chip,
.stat-chip {
  background-color: var(--chip-bg);
  border-color: var(--chip-border);
  color: var(--chip-text);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* ====== ALERT MESAJLARI ====== */
.alert {
  background-color: var(--danger-light);
  border-color: var(--danger);
  color: var(--danger-dark);
}

.success {
  background-color: var(--success-light);
  border-color: var(--success);
  color: var(--success-dark);
}

/* ====== TOPBAR ====== */
.topbar {
  background-color: var(--backdrop-bg);
  border-bottom-color: var(--border-primary);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
}

/* ====== MODAL ====== */
.modal {
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-primary);
}

/* ====== SMOOTH TRANSITIONS ====== */
* {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

/* Önemli elementler için transition'ı kaldır */
input[type="text"],
input[type="date"],
input[type="time"],
input[type="password"],
select,
textarea {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

/* ====== TEMA TOGGLE BUTONU ====== */
.btn-theme {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  border: 1px solid var(--border-primary);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s ease;
}

.btn-theme:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-secondary);
  transform: translateY(-1px);
}

.btn-theme .i {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  stroke: currentColor;
}

.btn-theme .theme-label {
  font-size: 14px;
  font-weight: 600;
}

/* ====== ACCESSIBILITY ====== */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}