/* ============================================================
   Süt Takip SaaS — Ana Stil Dosyası  v2
   Inter + Font Awesome 6 tabanlı, Bootstrap bağımsız
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS Değişkenleri (Custom Properties)
   ---------------------------------------------------------- */
:root {
  /* Renk paleti */
  --color-primary:        #16a34a;
  --color-primary-dark:   #15803d;
  --color-primary-light:  #dcfce7;
  --color-accent:         #f59e0b;
  --color-danger:         #ef4444;
  --color-danger-dark:    #dc2626;
  --color-warning:        #d97706;
  --color-info:           #2563eb;
  --color-info-light:     #dbeafe;

  /* Sidebar */
  --color-sidebar-bg:     #14532d;
  --color-sidebar-text:   #bbf7d0;
  --color-sidebar-active: #16a34a;

  /* Metin */
  --color-text:           #1e293b;
  --color-text-muted:     #64748b;
  --color-text-light:     #94a3b8;

  /* Zemin / Kenarlık */
  --color-bg:             #f0f4f8;
  --color-white:          #ffffff;
  --color-border:         #e2e8f0;
  --color-border-strong:  #cbd5e1;

  /* Gölgeler */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.07);
  --shadow:     0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 24px rgba(0,0,0,0.12);

  /* Köşe yarıçapları */
  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  18px;

  /* Boyutlar */
  --sidebar-width:   260px;
  --sidebar-mini:    70px;
  --topbar-height:   64px;

  /* Geçişler */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;

  /* Modal */
  --modal-z: 2000;

  /* Tab yüksekliği */
  --tab-height: 42px;
}

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

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

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9375rem;      /* 15px */
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

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

ul, ol { list-style: none; }

button, input, select, textarea {
  font-family: inherit;
}

code, pre, .font-monospace {
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

/* ----------------------------------------------------------
   3. Tipografi
   ---------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

small, .small { font-size: 0.8rem; }

strong, .fw-bold  { font-weight: 700; }
.fw-semibold      { font-weight: 600; }
.fw-medium        { font-weight: 500; }
.fw-normal        { font-weight: 400; }

/* ----------------------------------------------------------
   4. Layout — Genel Sarmalayıcı
   ---------------------------------------------------------- */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

/* ----------------------------------------------------------
   5. Sidebar
   ---------------------------------------------------------- */
.app-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-sidebar-bg);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform var(--transition-base);
  overflow: hidden;
  box-shadow: 2px 0 8px rgba(0,0,0,0.12);
}

/* Sidebar — Başlık */
.sidebar-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 0.875rem;
  flex-shrink: 0;
  background: rgba(0,0,0,0.15);
}

.sidebar-logo {
  font-size: 1.875rem;
  color: #86efac;
  line-height: 1;
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.sidebar-subtitle {
  font-size: 0.7rem;
  color: var(--color-sidebar-text);
  opacity: 0.75;
  display: block;
  margin-top: 1px;
}

/* Sidebar — Navigasyon */
.sidebar-nav {
  flex: 1;
  padding: 0.875rem 0.75rem;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.15) transparent;
}

.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
}

.sidebar-section-label {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(187,247,208,0.45);
  padding: 0.875rem 0.875rem 0.3rem;
  display: block;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.7rem 1rem;
  border-radius: 10px;
  color: rgba(187,247,208,0.85);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  margin-bottom: 2px;
  cursor: pointer;
}

.sidebar-item:hover {
  background: rgba(255,255,255,0.1);
  color: #ffffff;
  text-decoration: none;
}

.sidebar-item.active {
  background: var(--color-sidebar-active);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(22,163,74,0.4);
  font-weight: 600;
}

.sidebar-item i {
  width: 1.25rem;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* Sidebar — Alt Alan / Kullanıcı */
.sidebar-footer {
  padding: 0.875rem 0.75rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  flex-shrink: 0;
  background: rgba(0,0,0,0.1);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  border-radius: 10px;
}

.sidebar-user-avatar {
  width: 38px;
  height: 38px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.2);
}

.sidebar-user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  line-height: 1.2;
}

.sidebar-user-role {
  font-size: 0.7rem;
  color: var(--color-sidebar-text);
  opacity: 0.75;
  display: block;
}

.sidebar-logout {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  color: rgba(187,247,208,0.7);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background var(--transition-fast), color var(--transition-fast);
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  margin-top: 4px;
  font-family: inherit;
  font-weight: 500;
}

.sidebar-logout:hover {
  background: rgba(239,68,68,0.18);
  color: #fca5a5;
  text-decoration: none;
}

/* ----------------------------------------------------------
   6. Ana İçerik Alanı
   ---------------------------------------------------------- */
.app-main {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

/* ----------------------------------------------------------
   7. Topbar (Üst Çubuk)
   ---------------------------------------------------------- */
.app-topbar {
  height: var(--topbar-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.topbar-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 8px;
  transition: background var(--transition-fast);
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  flex-shrink: 0;
}

.topbar-menu-btn:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
  flex-shrink: 0;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.topbar-user strong {
  color: var(--color-text);
}

.topbar-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.625rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: capitalize;
}

/* Topbar — Bölge Seçici */
.district-selector select {
  height: 36px;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  padding: 0 0.75rem;
  font-size: 0.8rem;
  background: #ffffff;
  color: var(--color-text);
  max-width: 200px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.district-selector select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(22,163,74,0.12);
}

/* ----------------------------------------------------------
   8. İçerik Bölgesi
   ---------------------------------------------------------- */
.app-content {
  padding: 1.75rem 2rem;
  flex: 1;
  min-width: 0;
}

/* ----------------------------------------------------------
   9. Kartlar (Cards)
   ---------------------------------------------------------- */
.card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: 1rem 1.375rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #fafbfc;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  flex-wrap: wrap;
}

.card-header h5,
.card-header h4,
.card-header h3 {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.card-body {
  padding: 1.375rem;
}

.card-footer {
  padding: 0.875rem 1.375rem;
  border-top: 1px solid var(--color-border);
  background: #fafbfc;
}

/* ----------------------------------------------------------
   10. İstatistik Kartları (Stat Cards)
   ---------------------------------------------------------- */
.stat-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border-left: 4px solid var(--color-border);
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stat-card .stat-icon.green  { border-left-color: #16a34a; }
.stat-card .stat-icon.blue   { border-left-color: #2563eb; }
.stat-card .stat-icon.amber  { border-left-color: #d97706; }
.stat-card .stat-icon.purple { border-left-color: #7c3aed; }
.stat-card .stat-icon.red    { border-left-color: #dc2626; }

/* Override: apply the left border to stat-card based on icon colour */
.stat-card:has(.stat-icon.green)  { border-left-color: #16a34a; }
.stat-card:has(.stat-icon.blue)   { border-left-color: #2563eb; }
.stat-card:has(.stat-icon.amber)  { border-left-color: #d97706; }
.stat-card:has(.stat-icon.purple) { border-left-color: #7c3aed; }
.stat-card:has(.stat-icon.red)    { border-left-color: #dc2626; }

.stat-icon {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-icon.green  { background: #dcfce7; color: #16a34a; }
.stat-icon.blue   { background: #dbeafe; color: #2563eb; }
.stat-icon.amber  { background: #fef3c7; color: #d97706; }
.stat-icon.purple { background: #ede9fe; color: #7c3aed; }
.stat-icon.red    { background: #fee2e2; color: #dc2626; }

.stat-info {
  flex: 1;
  min-width: 0;
}

.stat-info .stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.stat-info .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  font-weight: 500;
}

.stat-info .stat-sub {
  font-size: 0.75rem;
  color: var(--color-primary);
  margin-top: 0.2rem;
  font-weight: 500;
}

/* ----------------------------------------------------------
   11. Butonlar (Buttons)
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.625rem 1.25rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  transition: all var(--transition-fast);
  min-height: 44px;
  line-height: 1.2;
  font-family: inherit;
  justify-content: center;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn:hover { text-decoration: none; }

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(22,163,74,0.2);
}

/* Primary */
.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #ffffff;
}

/* Outline-primary */
.btn-outline-primary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #ffffff;
}

/* Secondary */
.btn-secondary {
  background: #475569;
  color: #ffffff;
  border-color: #475569;
}
.btn-secondary:hover {
  background: #334155;
  border-color: #334155;
  color: #ffffff;
}

/* Outline-secondary */
.btn-outline-secondary {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border-strong);
}
.btn-outline-secondary:hover {
  background: #f1f5f9;
  color: var(--color-text);
  border-color: #cbd5e1;
}

/* Danger */
.btn-danger {
  background: var(--color-danger);
  color: #ffffff;
  border-color: var(--color-danger);
}
.btn-danger:hover {
  background: var(--color-danger-dark);
  border-color: var(--color-danger-dark);
  color: #ffffff;
}

/* Outline-danger */
.btn-outline-danger {
  background: transparent;
  color: var(--color-danger);
  border-color: var(--color-danger);
}
.btn-outline-danger:hover {
  background: var(--color-danger);
  color: #ffffff;
}

/* Warning */
.btn-warning {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}
.btn-warning:hover {
  background: var(--color-warning);
  border-color: var(--color-warning);
  color: #ffffff;
}

/* Info */
.btn-info {
  background: var(--color-info);
  color: #ffffff;
  border-color: var(--color-info);
}
.btn-info:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
  color: #ffffff;
}

/* Sizes */
.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.8rem;
  min-height: 36px;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  min-height: 52px;
}

.btn-icon {
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
}

.btn i, .btn .fa-solid, .btn .fa-regular, .btn .fa-brands {
  font-size: 0.875rem;
  flex-shrink: 0;
}

/* ----------------------------------------------------------
   12. Formlar (Forms)
   ---------------------------------------------------------- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.label-hint {
  font-weight: 400;
  color: var(--color-text-light);
  font-size: 0.8rem;
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text);
  background: #ffffff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
  font-family: inherit;
  appearance: auto;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(22,163,74,0.12);
  background: #fffffe;
}

.form-control::placeholder { color: #94a3b8; }

.form-control:disabled,
.form-control[readonly] {
  background: #f8fafc;
  color: var(--color-text-muted);
  cursor: not-allowed;
}

select.form-control { cursor: pointer; }

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

.form-text {
  font-size: 0.775rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.form-actions .btn {
  flex: 1;
  min-width: 120px;
}

.input-wrapper {
  position: relative;
}

.input-wrapper .input-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: #94a3b8;
  font-size: 1rem;
  pointer-events: none;
}

.input-wrapper .form-control {
  padding-left: 2.75rem;
}

/* ----------------------------------------------------------
   13. Tablolar (Tables)
   ---------------------------------------------------------- */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

/* Core table */
table.data-table,
table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background: #ffffff;
}

.data-table th,
.table th {
  background: #f1f5f9;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.data-table td,
.table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  color: var(--color-text);
  vertical-align: middle;
}

.data-table tr:last-child td,
.table tr:last-child td {
  border-bottom: none;
}

/* Striped — even rows */
.data-table tbody tr:nth-child(even),
.table-striped tbody tr:nth-child(even) {
  background: #fafbfc;
}

/* Hover */
.data-table tbody tr:hover,
.table tbody tr:hover,
.table-hover tbody tr:hover {
  background: #f0fdf4;
  transition: background var(--transition-fast);
}

/* Small variant */
.table-sm td,
.table-sm th {
  padding: 0.45rem 0.75rem;
}

/* Borderless variant */
.table-borderless td,
.table-borderless th {
  border: none !important;
}


/* ----------------------------------------------------------
   14. Rozet & Durum Etiketleri (Badges)
   ---------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  gap: 0.25rem;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.badge-primary   { background: #dcfce7; color: #15803d; }
.badge-success   { background: #dcfce7; color: #15803d; }
.badge-warning   { background: #fef3c7; color: #d97706; }
.badge-danger    { background: #fee2e2; color: #dc2626; }
.badge-info      { background: #dbeafe; color: #2563eb; }
.badge-secondary { background: #f1f5f9; color: #64748b; }
.badge-active    { background: #dcfce7; color: #15803d; }
.badge-suspended { background: #fee2e2; color: #991b1b; }
.badge-trial     { background: #fef9c3; color: #92400e; }
.badge-draft     { background: #e5e7eb; color: #374151; }
.badge-finalized { background: #dbeafe; color: #1e40af; }
.badge-paid      { background: #dcfce7; color: #065f46; }

/* ----------------------------------------------------------
   15. Uyarı Kutuları (Alerts)
   ---------------------------------------------------------- */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  border-left-width: 4px;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-success {
  background: #f0fdf4;
  border-color: #bbf7d0;
  border-left-color: #16a34a;
  color: #15803d;
}

.alert-danger {
  background: #fef2f2;
  border-color: #fecaca;
  border-left-color: #ef4444;
  color: #dc2626;
}

.alert-warning {
  background: #fffbeb;
  border-color: #fde68a;
  border-left-color: #f59e0b;
  color: #d97706;
}

.alert-info {
  background: #eff6ff;
  border-color: #bfdbfe;
  border-left-color: #3b82f6;
  color: #1d4ed8;
}

.alert .btn-close {
  background: none;
  border: none;
  font-size: 1.125rem;
  cursor: pointer;
  margin-left: auto;
  color: inherit;
  opacity: 0.6;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.alert .btn-close:hover { opacity: 1; }

/* Flash alert — dinamik bildirimler */
.flash-alert {
  position: fixed;
  top: calc(var(--topbar-height) + 12px);
  right: 16px;
  z-index: 2000;
  min-width: 280px;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius);
  animation: slideInRight 0.2s ease;
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ----------------------------------------------------------
   16. Sayfa Başlığı (Page Header)
   ---------------------------------------------------------- */
.page-header {
  margin-bottom: 1.75rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-header h1,
.page-header .page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.2;
}

.page-header .page-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.page-header .page-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

/* ----------------------------------------------------------
   17. Tab Navigasyonu (Bootstrap bağımsız)
   ---------------------------------------------------------- */
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-tabs {
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1.5rem;
  gap: 0;
}

.nav-tabs .nav-item {
  margin-bottom: -2px;
}

.nav-tabs .nav-link {
  display: inline-flex;
  align-items: center;
  height: var(--tab-height);
  padding: 0 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border: none;
  border-bottom: 2px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  background: none;
  white-space: nowrap;
}

.nav-tabs .nav-link:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-border-strong);
  text-decoration: none;
}

.nav-tabs .nav-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
  background: none;
}

/* ----------------------------------------------------------
   18. Modal (Bootstrap bağımsız, .is-open toggle ile)
   ---------------------------------------------------------- */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.55);
  z-index: var(--modal-z);
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  backdrop-filter: blur(2px);
}

.modal-backdrop.is-open {
  display: flex;
}

.modal-dialog {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(-8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Legacy Bootstrap modal — override to hide by default */
.modal.fade:not(.is-open) {
  display: none;
}

.modal-content {
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #fafbfc;
}

.modal-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
  margin: 0;
}

.modal-header .btn-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0.25rem;
  line-height: 1;
  border-radius: 4px;
  transition: background var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
  margin-left: auto;
}

.modal-header .btn-close:hover {
  background: #f1f5f9;
  color: var(--color-text);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  background: #fafbfc;
}

/* ----------------------------------------------------------
   19. List Group / Autocomplete (Bootstrap bağımsız)
   ---------------------------------------------------------- */
.list-group {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}

.list-group-item {
  display: block;
  padding: 0.5rem 0.875rem;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
  transition: background var(--transition-fast);
}

.list-group-item:last-child { border-bottom: none; }

.list-group-item-action {
  cursor: pointer;
}

.list-group-item-action:hover,
.list-group-item-action:focus {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  outline: none;
  text-decoration: none;
}

/* ----------------------------------------------------------
   20. Sayfalama (Pagination)
   ---------------------------------------------------------- */
.pagination {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  list-style: none;
}

.pagination .page-item .page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  padding: 0.25rem 0.75rem;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text);
  text-decoration: none;
  background: #ffffff;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.pagination .page-item .page-link:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination .page-item.active .page-link {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.pagination .page-item.disabled .page-link {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ----------------------------------------------------------
   21. Izgara Yardımcıları (Grid Helpers)
   ---------------------------------------------------------- */
.grid   { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.stats-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* Settings sayfası — liste üstte, form altında */
.settings-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ----------------------------------------------------------
   22. Lisans Süresi Dolmuş Kaplaması
   ---------------------------------------------------------- */
.license-expired-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.license-expired-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);
}

.license-expired-card h2 {
  color: #dc2626;
  margin-bottom: 1rem;
}

.license-expired-card p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ----------------------------------------------------------
   23. Kenar Çubuğu Kaplamı — Mobil (Sidebar Overlay)
   ---------------------------------------------------------- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 999;
  cursor: pointer;
}

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

/* ----------------------------------------------------------
   24. Yardımcı Sınıflar (Utility Classes)
   ---------------------------------------------------------- */

/* --- Metin renkleri --- */
.text-muted    { color: var(--color-text-muted); }
.text-light    { color: var(--color-text-light); }
.text-primary  { color: var(--color-primary); }
.text-success  { color: #16a34a; }
.text-danger   { color: #dc2626; }
.text-warning  { color: #d97706; }
.text-info     { color: #2563eb; }
.text-white    { color: #ffffff; }

/* --- Metin hizalama --- */
.text-start  { text-align: left; }
.text-end    { text-align: right; }
.text-center { text-align: center; }

/* --- Margin Top --- */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2.5rem; }

/* --- Margin Bottom --- */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2.5rem; }

/* --- Margin Left/Right --- */
.ms-1    { margin-left: 0.25rem; }
.ms-2    { margin-left: 0.5rem; }
.ms-auto { margin-left: auto; }
.me-1    { margin-right: 0.25rem; }
.me-auto { margin-right: auto; }

/* --- Padding --- */
.p-0  { padding: 0 !important; }
.p-1  { padding: 0.25rem; }
.p-2  { padding: 0.5rem; }
.p-3  { padding: 1rem; }
.p-4  { padding: 1.5rem; }

.py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 1rem; padding-bottom: 1rem; }

.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 1rem; padding-right: 1rem; }

/* --- Gap --- */
.gap-0 { gap: 0; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.5rem; }

/* --- Flexbox --- */
.d-flex       { display: flex; }
.d-block      { display: block; }
.d-none       { display: none; }
.d-inline     { display: inline; }
.d-inline-flex { display: inline-flex; }

.align-items-start   { align-items: flex-start; }
.align-items-center  { align-items: center; }
.align-items-end     { align-items: flex-end; }
.justify-content-start   { justify-content: flex-start; }
.justify-content-between { justify-content: space-between; }
.justify-content-center  { justify-content: center; }
.justify-content-end     { justify-content: flex-end; }

.flex-wrap   { flex-wrap: wrap; }
.flex-column { flex-direction: column; }
.flex-1      { flex: 1; }

/* --- Width / Height --- */
.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* --- Erişilebilirlik --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ----------------------------------------------------------
   25. Filtre Çubuğu (Filter Bar)
   ---------------------------------------------------------- */
.filter-bar {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.875rem 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.filter-bar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  align-items: flex-end;
}

.filter-bar .form-group {
  margin: 0;
}

/* ----------------------------------------------------------
   26. Responsive — Tablet (max-width: 1024px)
   ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .app-content {
    padding: 1.5rem 1.25rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------------------------
   27. Responsive — Mobil (max-width: 768px)
   ---------------------------------------------------------- */
@media (max-width: 768px) {
  .app-sidebar {
    transform: translateX(-100%);
  }

  .app-sidebar.open {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
  }

  .topbar-menu-btn {
    display: flex;
  }

  .app-content {
    padding: 1rem;
  }

  .card-body {
    padding: 1rem;
  }

  .card-header {
    padding: 0.875rem 1rem;
  }

  .card-footer {
    padding: 0.75rem 1rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.875rem;
  }

  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-actions .btn {
    width: 100%;
  }

  .page-header {
    flex-direction: column;
    margin-bottom: 1.25rem;
  }

  .page-header .page-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .page-header .page-actions .btn {
    flex: 1;
  }

  .stat-card {
    padding: 1.125rem;
  }

  .stat-info .stat-value {
    font-size: 1.5rem;
  }


  .table-wrapper {
    border-radius: 8px;
  }

  .nav-tabs .nav-link {
    padding: 0 0.875rem;
    font-size: 0.8rem;
  }

  .filter-bar-row {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-user strong {
    display: none;
  }
}

/* ----------------------------------------------------------
   28. Responsive — Küçük Mobil (max-width: 480px)
   ---------------------------------------------------------- */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .topbar-user {
    display: none;
  }

  .btn-sm {
    font-size: 0.75rem;
    padding: 0.3rem 0.625rem;
  }

  .page-header h1,
  .page-header .page-title {
    font-size: 1.25rem;
  }

  .modal-dialog {
    max-width: 100%;
    border-radius: var(--radius);
  }
}

/* ----------------------------------------------------------
   29. Yazdırma Stilleri (Print Styles)
   ---------------------------------------------------------- */
@media print {
  .app-sidebar,
  .app-topbar,
  .btn,
  .no-print,
  .sidebar-overlay,
  .filter-bar,
  .pagination {
    display: none !important;
  }

  .app-main {
    margin: 0 !important;
  }

  .app-content {
    padding: 0 !important;
  }

  body {
    background: #ffffff;
    font-size: 11pt;
    color: #000000;
  }

  .card {
    box-shadow: none;
    border: 1px solid #cccccc;
    break-inside: avoid;
  }

  .card-header {
    background: #f5f5f5;
    border-bottom: 1px solid #cccccc;
  }

  table {
    font-size: 10pt;
    page-break-inside: avoid;
  }

  @page {
    margin: 1.5cm;
    size: A4;
  }
}

/* ----------------------------------------------------------
   30. Login Sayfası (login.php için)
   ---------------------------------------------------------- */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #064e3b 0%, #14532d 50%, #166534 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  background: var(--color-white);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  padding: 2.75rem 2.5rem;
  width: 100%;
  max-width: 440px;
}

.login-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo .logo-icon {
  width: 72px;
  height: 72px;
  background: var(--color-primary-light);
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2.25rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.login-logo h1 {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.login-logo p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.btn-login {
  width: 100%;
  padding: 0.875rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast), transform 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  min-height: 52px;
  margin-top: 1.5rem;
}

.btn-login:hover  { background: var(--color-primary-dark); }
.btn-login:active { transform: scale(0.99); }

.login-footer {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.75rem;
  color: var(--color-text-light);
}



/* ----------------------------------------------------------
   Quick-action topbar buttons (Yeni Müşteri / Yeni Süt Girişi)
   ---------------------------------------------------------- */
.topbar-quick-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

/* On very small screens hide the text label, show only icon */
@media (max-width: 480px) {
  .topbar-quick-label {
    display: none;
  }
  .topbar-quick-btn {
    padding: 0 0.5rem;
    min-width: 36px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* Modal: ensure autocomplete dropdown appears above modal overlay */
.modal-backdrop .list-group.position-absolute {
  z-index: 3000;
}

/* ----------------------------------------------------------
   Full-page modal (.modal-fullpage)
   Tam ekranı kaplar, sidebar hariç sağ tarafı doldurur.
   ---------------------------------------------------------- */
.modal-fullpage {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: calc(var(--modal-z) + 10);
  flex-direction: column;
  overflow-y: auto;
}

.modal-fullpage.is-open {
  display: flex;
}

.modal-fullpage .modal-fp-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1.5rem;
  height: var(--topbar-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.modal-fullpage .modal-fp-header .modal-fp-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  flex: 1;
}

.modal-fullpage .modal-fp-header .btn-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1;
}

.modal-fullpage .modal-fp-header .btn-close:hover {
  background: #f1f5f9;
  color: var(--color-text);
}

.modal-fullpage .modal-fp-body {
  flex: 1;
  padding: 2rem;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .modal-fullpage .modal-fp-body {
    padding: 1rem;
  }
}