/* ========================================================================
   PTTS Design System
   ======================================================================== */

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

:root {
  /* Color Palette */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;

  /* Brand */
  --brand-50: #ecfdf5;
  --brand-100: #d1fae5;
  --brand-200: #a7f3d0;
  --brand-400: #34d399;
  --brand-500: #10b981;
  --brand-600: #059669;
  --brand-700: #047857;
  --brand-800: #065f46;

  --accent-50: #fffbeb;
  --accent-100: #fef3c7;
  --accent-400: #fbbf24;
  --accent-500: #f59e0b;
  --accent-600: #d97706;

  --danger-50: #fef2f2;
  --danger-100: #fee2e2;
  --danger-500: #ef4444;
  --danger-600: #dc2626;
  --danger-700: #b91c1c;

  --info-50: #eff6ff;
  --info-500: #3b82f6;
  --info-600: #2563eb;

  --purple-500: #8b5cf6;
  --purple-600: #7c3aed;

  /* Semantic */
  --bg-body: var(--slate-50);
  --bg-surface: #ffffff;
  --bg-surface-hover: var(--slate-50);
  --bg-sidebar: var(--slate-900);
  --bg-sidebar-hover: rgba(255, 255, 255, 0.06);
  --bg-sidebar-active: rgba(16, 185, 129, 0.15);

  --text-primary: var(--slate-900);
  --text-secondary: var(--slate-500);
  --text-tertiary: var(--slate-400);
  --text-on-dark: #e2e8f0;
  --text-on-dark-muted: #94a3b8;

  --border-default: var(--slate-200);
  --border-light: var(--slate-100);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --sidebar-width: 260px;
  --topbar-height: 64px;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================================================
   Reset & Base
   ======================================================================== */

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

a { color: var(--brand-600); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--brand-700); }

::selection { background: var(--brand-100); color: var(--brand-800); }

/* ========================================================================
   Panel Layout
   ======================================================================== */

body.panel-govde {
  display: flex;
  min-height: 100vh;
}

/* ========================================================================
   Sidebar
   ======================================================================== */

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 40;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--transition-slow);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 4px; }

.sidebar-marka {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.damga-mini {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.sidebar-marka h1 {
  color: #ffffff;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-menu {
  padding: 16px 12px;
  flex: 1;
}

.menu-grup {
  margin-bottom: 24px;
}

.menu-grup-baslik {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-on-dark-muted);
  padding: 0 12px;
  margin-bottom: 6px;
  font-weight: 600;
}

.menu-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  color: var(--text-on-dark);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 2px;
  transition: all var(--transition-fast);
  position: relative;
}

.menu-link:hover {
  background: var(--bg-sidebar-hover);
  color: #fff;
}

.menu-link.aktif {
  background: var(--bg-sidebar-active);
  color: var(--brand-400);
  font-weight: 600;
}

.menu-link.aktif::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--brand-400);
  border-radius: 0 3px 3px 0;
}

.menu-ikon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0.7;
  flex-shrink: 0;
}

.menu-link.aktif .menu-ikon { opacity: 1; }

/* Mobile hamburger */
.hamburger-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.hamburger-btn:hover { background: var(--slate-100); }

.hamburger-btn svg { width: 22px; height: 22px; display: block; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 35;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.sidebar-kapat {
  display: none;
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  font-size: 18px;
  transition: background var(--transition-fast);
  align-items: center;
  justify-content: center;
}

.sidebar-kapat:hover { background: rgba(255, 255, 255, 0.2); }

/* ========================================================================
   Main Content Area
   ======================================================================== */

.ana-govde {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  margin-left: var(--sidebar-width);
}

/* ========================================================================
   Topbar
   ======================================================================== */

.topbar {
  height: var(--topbar-height);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default);
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar-sol {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-baslik {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.topbar-kullanici {
  display: flex;
  align-items: center;
  gap: 12px;
}

.kullanici-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  background: var(--slate-100);
  border-radius: 50px;
}

.kullanici-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.kullanici-adi {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.cikis-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.cikis-link:hover {
  color: var(--danger-600);
  border-color: var(--danger-200, #fecaca);
  background: var(--danger-50);
}

/* ========================================================================
   Content Area
   ======================================================================== */

.icerik {
  padding: 28px;
  max-width: 1200px;
  width: 100%;
}

.altbaslik {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: -4px;
  margin-bottom: 24px;
  line-height: 1.5;
}

/* ========================================================================
   Dashboard Cards
   ======================================================================== */

.kartlar {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.kart {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.kart::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--kart-renk, var(--brand-500));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.kart:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.kart:hover::before { opacity: 1; }

.kart .sayi {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.kart .etiket {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  margin-top: 6px;
}

/* ========================================================================
   Tables
   ======================================================================== */

table.kayit-tablo {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-surface);
  margin-top: 12px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

table.kayit-tablo th,
table.kayit-tablo td {
  padding: 12px 16px;
  text-align: left;
  font-size: 13.5px;
  border-bottom: 1px solid var(--border-light);
}

table.kayit-tablo th {
  background: var(--slate-50);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

table.kayit-tablo tr:last-child td { border-bottom: none; }

table.kayit-tablo tbody tr {
  transition: background var(--transition-fast);
}

table.kayit-tablo tbody tr:hover td { background: var(--slate-50); }

table.kayit-tablo tr.pasif td { color: var(--text-tertiary); }

/* ========================================================================
   Badges / Rozet
   ======================================================================== */

.rozet {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.rozet-bolge {
  background: rgba(139, 92, 246, 0.1);
  color: var(--purple-600);
}

.rozet-mintika {
  background: rgba(16, 185, 129, 0.1);
  color: var(--brand-700);
}

.rozet-kurum {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info-600);
}

.rozet-mahal {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-600);
}

/* ========================================================================
   Forms
   ======================================================================== */

form.kayit-form {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-top: 24px;
  max-width: 520px;
  box-shadow: var(--shadow-xs);
}

form.kayit-form h3 {
  margin-top: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

form.kayit-form h3::before {
  content: '';
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, var(--brand-500), var(--brand-400));
  border-radius: 4px;
  flex-shrink: 0;
}

form.kayit-form label {
  display: block;
  margin: 14px 0 5px;
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

form.kayit-form input[type=text],
form.kayit-form input[type=password],
form.kayit-form select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  outline: none;
}

form.kayit-form input[type=text]:hover,
form.kayit-form input[type=password]:hover,
form.kayit-form select:hover {
  border-color: var(--slate-300);
}

form.kayit-form input[type=text]:focus,
form.kayit-form input[type=password]:focus,
form.kayit-form select:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

form.kayit-form input::placeholder { color: var(--text-tertiary); }

.checkbox-satir {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.checkbox-satir label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  margin: 0;
  cursor: pointer;
}

.checkbox-satir input[type=checkbox] {
  width: 16px;
  height: 16px;
  accent-color: var(--brand-600);
  cursor: pointer;
}

/* ========================================================================
   Buttons
   ======================================================================== */

button.btn, input[type=submit].btn {
  margin-top: 18px;
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(5, 150, 105, 0.3);
}

button.btn:hover {
  background: linear-gradient(135deg, var(--brand-700), var(--brand-600));
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
  transform: translateY(-1px);
}

button.btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(5, 150, 105, 0.3);
}

/* ========================================================================
   Messages
   ======================================================================== */

.mesaj {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-top: 12px;
  margin-bottom: 8px;
  font-size: 13.5px;
  font-weight: 500;
  background: var(--brand-50);
  color: var(--brand-800);
  border: 1px solid var(--brand-200);
  animation: mesajGir 0.3s ease-out;
}

.mesaj::before {
  content: '\2713';
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-500);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  flex-shrink: 0;
}

.mesaj.hata {
  background: var(--danger-50);
  color: var(--danger-700);
  border-color: var(--danger-100);
}

.mesaj.hata::before {
  content: '!';
  background: var(--danger-500);
  font-weight: 700;
}

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

/* ========================================================================
   Action Links
   ======================================================================== */

.sil-link {
  color: var(--danger-500);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin-right: 4px;
}

.sil-link:hover {
  background: var(--danger-50);
  color: var(--danger-700);
}

.toggle-link {
  color: var(--brand-600);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.toggle-link:hover {
  background: var(--brand-50);
  color: var(--brand-700);
}

/* ========================================================================
   Sections
   ======================================================================== */

.bolum { margin-top: 40px; }
.bolum h2 {
  font-size: 17px;
  color: var(--text-primary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: 4px;
}

/* ========================================================================
   Login Page
   ======================================================================== */

body.giris-sayfasi {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--slate-50);
  position: relative;
  overflow: hidden;
}

body.giris-sayfasi::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.08), transparent 70%);
  top: -200px;
  right: -100px;
  pointer-events: none;
}

body.giris-sayfasi::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06), transparent 70%);
  bottom: -150px;
  left: -100px;
  pointer-events: none;
}

.giris-kutu {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: 40px 36px 36px;
  width: 380px;
  max-width: 90vw;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: girisKutuGir 0.5s ease-out;
}

@keyframes girisKutuGir {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.damga {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: 8px;
  text-transform: uppercase;
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
  margin-bottom: 20px;
}

.giris-baslik {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}

.giris-alt {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 28px;
}

.giris-kutu label {
  display: block;
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.giris-kutu input[type=text],
.giris-kutu input[type=password] {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  outline: none;
  margin-bottom: 16px;
}

.giris-kutu input:hover { border-color: var(--slate-300); }

.giris-kutu input:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.giris-kutu input::placeholder { color: var(--text-tertiary); }

.giris-kutu button.btn {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  margin-top: 8px;
}

/* ========================================================================
   Dashboard Welcome
   ======================================================================== */

.icerik h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

@media (max-width: 1024px) {
  :root { --sidebar-width: 240px; }
}

@media (max-width: 820px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
  }

  .sidebar.acik { transform: translateX(0); }

  .sidebar-overlay.acik {
    display: block;
  }

  .sidebar-kapat { display: flex; }

  .hamburger-btn { display: flex; }

  .ana-govde { margin-left: 0; }

  .topbar { padding: 0 16px; }

  .icerik { padding: 20px 16px; }

  .kartlar {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
  }

  .kart { padding: 16px 18px; }
  .kart .sayi { font-size: 26px; }

  form.kayit-form {
    max-width: 100%;
    padding: 20px;
  }

  table.kayit-tablo th,
  table.kayit-tablo td { padding: 10px 12px; font-size: 13px; }

  .topbar-kullanici .kullanici-chip { display: none; }
}

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

  .giris-kutu { padding: 32px 24px 28px; }

  table.kayit-tablo { font-size: 12px; }
  table.kayit-tablo th,
  table.kayit-tablo td { padding: 8px 10px; }
}