/* =========================================
   efemiletisim.com – Tasarım Sistemi
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── CSS Değişkenleri ─── */
:root {
  /* Renkler */
  --primary:       #2563EB;
  --primary-dark:  #1D4ED8;
  --primary-light: #DBEAFE;
  --secondary:     #0F172A;
  --accent:        #F59E0B;
  --accent-light:  #FEF3C7;
  --success:       #10B981;
  --error:         #EF4444;
  --warning:       #F59E0B;

  /* Nötr Renkler */
  --bg:            #F8FAFC;
  --surface:       #FFFFFF;
  --surface-2:     #F1F5F9;
  --border:        #E2E8F0;
  --border-dark:   #CBD5E1;

  /* Metin */
  --text-primary:  #1E293B;
  --text-secondary:#64748B;
  --text-muted:    #94A3B8;
  --text-white:    #FFFFFF;

  /* Gölgeler */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
  --shadow-primary: 0 4px 14px rgba(37,99,235,0.3);

  /* Spacing */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Border Radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full:9999px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   350ms ease;

  /* Container */
  --container-max: 1280px;
  --container-pad: clamp(16px, 4vw, 48px);

  /* Z-index katmanları */
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-modal:    300;
  --z-toast:    400;
}

/* ─── Reset & Base ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol { list-style: none; }

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

button { cursor: pointer; border: none; background: none; }

main { flex: 1; }

/* ─── Container ─── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ─── Tipografi ─── */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); font-weight: 600; line-height: 1.35; }
h4 { font-size: 1.125rem; font-weight: 600; }
h5 { font-size: 1rem; font-weight: 600; }
h6 { font-size: 0.875rem; font-weight: 600; }

p { color: var(--text-secondary); }

.text-xs   { font-size: 0.75rem; }
.text-sm   { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg   { font-size: 1.125rem; }
.text-xl   { font-size: 1.25rem; }

.font-medium  { font-weight: 500; }
.font-semibold{ font-weight: 600; }
.font-bold    { font-weight: 700; }

.text-primary   { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-success   { color: var(--success); }
.text-error     { color: var(--error); }
.text-white     { color: var(--text-white); }

/* ─── Yardımcı Sınıflar ─── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.flex-wrap { flex-wrap: wrap; }

.grid { display: grid; }

.w-full { width: 100%; }
.h-full { height: 100%; }
.relative { position: relative; }
.absolute { position: absolute; }

.mt-auto { margin-top: auto; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ─── Animasyonlar ─── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.05); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

@keyframes badgePop {
  0%   { transform: scale(0); }
  60%  { transform: scale(1.3); }
  100% { transform: scale(1); }
}

.animate-fade-in     { animation: fadeIn 0.5s ease forwards; }
.animate-slide-down  { animation: slideDown 0.3s ease forwards; }

/* ─── Skeleton Loader ─── */
.skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--border) 50%, var(--surface-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ─── Toast Bildirimleri ─── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  z-index: var(--z-toast);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--primary);
  min-width: 280px;
  max-width: 380px;
  animation: slideDown 0.3s ease;
  font-size: 0.875rem;
  font-weight: 500;
}

.toast.success { border-color: var(--success); }
.toast.error   { border-color: var(--error); }
.toast.warning { border-color: var(--warning); }

.toast-icon { font-size: 1.25rem; flex-shrink: 0; }
.toast-msg  { flex: 1; }
.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.125rem;
  padding: 2px;
  border-radius: 4px;
  transition: color var(--transition-fast);
}
.toast-close:hover { color: var(--text-primary); }

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.modal-body    { padding: var(--space-6); }
.modal-footer  { padding: var(--space-6); border-top: 1px solid var(--border); }

/* ─── Breadcrumb ─── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: var(--space-4) 0;
}

.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border-dark); }
.breadcrumb .current { color: var(--text-primary); font-weight: 500; }

/* ─── Badge ─── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-primary { background: var(--primary-light); color: var(--primary-dark); }
.badge-success { background: #D1FAE5; color: #065F46; }
.badge-warning { background: var(--accent-light); color: #92400E; }
.badge-error   { background: #FEE2E2; color: #991B1B; }

/* ─── Divider ─── */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: var(--space-6) 0;
}

/* ─── Sayfa Başlık Bölümü ─── */
.page-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-8) 0;
  margin-bottom: var(--space-8);
}

.page-header h1 {
  font-size: 2rem;
  color: var(--secondary);
}

/* ─── Boş Durum ─── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-20) var(--space-8);
  text-align: center;
}

.empty-state .icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.empty-state h3 { margin-bottom: var(--space-2); }
.empty-state p  { color: var(--text-muted); margin-bottom: var(--space-6); }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Responsive ─── */
@media (max-width: 768px) {
  :root { --container-pad: 16px; }
}