/* ============================================
   UYATEK EMİSYON TAKİP — TASARIM SİSTEMİ
   uyatek.com temali, clean & minimalist
   ============================================ */

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

/* --- CSS Custom Properties --- */
:root {
  /* Uyatek Renk Paleti */
  --color-primary: #0066cc;
  --color-primary-hover: #0052a3;
  --color-primary-light: #e8f0fe;
  --color-primary-alpha: rgba(0, 102, 204, 0.1);
  --color-dark: #051024;
  --color-dark-secondary: #0a1a3a;
  --color-dark-tertiary: #122244;
  --color-bg-main: #f0f4f8;
  --color-bg-card: #ffffff;
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-light: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-danger: #ef4444;
  --color-danger-light: #fee2e2;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-info: #3b82f6;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed: 0px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg-main);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: var(--font-size-base);
  outline: none;
}

/* --- Screen Management --- */
.screen {
  display: none;
  animation: fadeIn 0.35s ease;
}

.screen.active {
  display: block;
}

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

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ============================================
   LOGIN SCREEN
   ============================================ */
#login-screen {
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #051024 0%, #0a1a3a 40%, #0066cc 100%);
  position: relative;
  overflow: hidden;
}

#login-screen.active {
  display: flex;
}

#login-screen::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.15) 0%, transparent 70%);
  top: -200px;
  right: -200px;
}

#login-screen::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
}

.login-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: scaleIn 0.5s ease;
}

.login-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.login-logo .logo-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #0066cc, #0052a3);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
}

.login-logo h1 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.5px;
}

.login-logo p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.login-form .form-group {
  margin-bottom: var(--space-lg);
}

.login-form label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.login-form input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg-card);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.login-form input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha);
}

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

.login-error {
  display: none;
  padding: 10px 14px;
  background: var(--color-danger-light);
  color: var(--color-danger);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.login-error.show {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
  background: var(--color-bg-main);
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border-light);
  border-color: var(--color-text-muted);
}

.btn-success {
  background: var(--color-success);
  color: #fff;
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

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

.btn-sm {
  padding: 6px 14px;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 14px 32px;
  font-size: var(--font-size-md);
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn .spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}

.btn.loading .spinner {
  display: inline-block;
}

.btn.loading .btn-text {
  opacity: 0.7;
}

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

/* ============================================
   LAYOUT — SIDEBAR + MAIN
   ============================================ */
.app-layout {
  display: none;
  min-height: 100vh;
}

.app-layout.active {
  display: flex;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-dark);
  color: var(--color-text-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition-base);
}

.sidebar-header {
  padding: var(--space-lg) var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo .logo-mark {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #0066cc, #3b82f6);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.sidebar-logo .logo-text {
  display: flex;
  flex-direction: column;
}

.sidebar-logo .logo-text .brand {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.3px;
  line-height: 1.2;
}

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

.sidebar-nav {
  flex: 1;
  padding: var(--space-md) var(--space-md);
}

.sidebar-nav .nav-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.3);
  padding: var(--space-md) var(--space-sm) var(--space-sm);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-base);
  font-weight: 400;
  transition: all var(--transition-fast);
  cursor: pointer;
  margin-bottom: 2px;
}

.nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.nav-item.active {
  color: #fff;
  background: var(--color-primary);
  font-weight: 500;
}

.nav-item .nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-item .nav-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sidebar-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--space-md);
}

.sidebar-user .user-avatar {
  width: 34px;
  height: 34px;
  background: var(--color-dark-tertiary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  flex-shrink: 0;
}

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

.sidebar-user .user-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.btn-logout {
  width: 100%;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--color-danger);
}

.btn-logout svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

.content-header {
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.content-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.3px;
}

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

.content-body {
  padding: var(--space-lg);
  padding-bottom: var(--space-md);
}

/* Mobile hamburger */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}

.mobile-toggle svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ============================================
   FORM — CARD & FIELDS
   ============================================ */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  display: flex;
  flex-direction: column;
}

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

.card-header h3 {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text-primary);
}

.card-body {
  padding: var(--space-md) var(--space-lg);
  flex: 1;
  overflow-y: auto;
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-md);
  flex-shrink: 0;
  background: var(--color-bg-card);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-grid .form-group.full-width {
  grid-column: 1 / -1;
}

.form-group {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.form-group label .required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg-card);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha);
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-control:disabled {
  background: var(--color-bg-main);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

textarea.form-control {
  resize: vertical;
  min-height: 50px;
  max-height: 100px;
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Cascading dropdown section */
.cascade-section {
  background: var(--color-bg-main);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.cascade-section .section-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.cascade-section .section-title svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
}

/* Gas selection - conditional */
.gas-selection {
  display: none;
  animation: fadeIn 0.3s ease;
}

.gas-selection.show {
  display: block;
}

/* ============================================
   TABLE
   ============================================ */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table thead th {
  background: var(--color-bg-main);
  padding: 12px 16px;
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 5;
}

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

.data-table tbody tr:hover {
  background: rgba(0, 102, 204, 0.02);
}

.data-table tbody td {
  padding: 12px 16px;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

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

/* ============================================
   BADGES
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  white-space: nowrap;
}

.badge-draft {
  background: var(--color-bg-main);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.badge-sent {
  background: var(--color-success-light);
  color: #065f46;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-draft::before,
.badge-sent::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.badge-draft::before {
  background: var(--color-text-muted);
}

.badge-sent::before {
  background: var(--color-success);
}

/* ============================================
   ACTION BUTTONS (Table row)
   ============================================ */
.action-btns {
  display: flex;
  gap: 6px;
}

.action-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  transition: all var(--transition-fast);
}

.action-btn svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.action-btn.edit-btn {
  color: var(--color-primary);
}

.action-btn.edit-btn:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.action-btn.edit-btn svg {
  stroke: var(--color-primary);
}

.action-btn.delete-btn {
  color: var(--color-danger);
}

.action-btn.delete-btn:hover {
  background: var(--color-danger-light);
  border-color: var(--color-danger);
}

.action-btn.delete-btn svg {
  stroke: var(--color-danger);
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  animation: fadeIn 0.2s ease;
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: scaleIn 0.3s ease;
}

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

.modal-header h3 {
  font-size: var(--font-size-md);
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-bg-main);
  color: var(--color-text-primary);
}

.modal-close svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.modal-body {
  padding: var(--space-lg);
}

.modal-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
}

/* ============================================
   CONFIRM DIALOG
   ============================================ */
.confirm-dialog .modal {
  max-width: 400px;
  text-align: center;
}

.confirm-dialog .confirm-icon {
  width: 56px;
  height: 56px;
  background: var(--color-danger-light);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.confirm-dialog .confirm-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-danger);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.confirm-dialog p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-lg);
}

.confirm-dialog .modal-footer {
  justify-content: center;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  max-width: 420px;
  animation: slideInRight 0.35s ease;
  transition: all var(--transition-base);
}

.toast.removing {
  opacity: 0;
  transform: translateX(100%);
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(60px); }
  to { opacity: 1; transform: translateX(0); }
}

.toast-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.toast-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.toast.toast-success .toast-icon svg { stroke: var(--color-success); }
.toast.toast-error .toast-icon svg { stroke: var(--color-danger); }
.toast.toast-warning .toast-icon svg { stroke: var(--color-warning); }
.toast.toast-info .toast-icon svg { stroke: var(--color-info); }

.toast-message {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.4;
}

.toast-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  padding: 4px;
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.toast-close:hover {
  color: var(--color-text-primary);
}

.toast-close svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

/* ============================================
   FILTER BAR
   ============================================ */
.filter-bar {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.filter-bar .form-control {
  max-width: 240px;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.empty-state .empty-icon {
  width: 64px;
  height: 64px;
  background: var(--color-bg-main);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.empty-state .empty-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-text-muted);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.empty-state h4 {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.empty-state p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   LOADING
   ============================================ */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
}

.loading-spinner::after {
  content: '';
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ============================================
   ADMIN: USER FILTER CHIPS
   ============================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.stat-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.stat-card .stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1;
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Data entry screen: fill available height so footer stays visible */
#data-entry-screen .card {
  max-height: calc(100vh - 120px);
}

@media (max-width: 1024px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

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

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

  .mobile-toggle {
    display: block;
  }

  .content-body {
    padding: var(--space-sm);
  }

  .content-header {
    padding: var(--space-sm) var(--space-md);
  }

  .card-body {
    padding: var(--space-sm) var(--space-md);
  }

  .card-header {
    padding: var(--space-sm) var(--space-md);
  }

  .cascade-section {
    padding: var(--space-sm);
  }

  #data-entry-screen .card {
    max-height: calc(100vh - 90px);
    border-radius: var(--radius-sm);
  }

  .card-footer {
    padding: var(--space-sm) var(--space-md);
  }

  .card-footer .btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: var(--font-size-md);
  }

  .toast-container {
    left: var(--space-md);
    right: var(--space-md);
  }

  .toast {
    min-width: auto;
    max-width: 100%;
  }

  .login-card {
    margin: var(--space-md);
    padding: var(--space-xl);
  }

  .filter-bar {
    flex-direction: column;
  }

  .filter-bar .form-control {
    max-width: 100%;
  }

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

  /* Tablo mobil uyumu */
  .data-table tbody td {
    padding: 8px 10px;
    font-size: var(--font-size-sm);
  }
  .data-table thead th {
    padding: 8px 10px;
  }
}

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

/* ============================================
   SIDEBAR OVERLAY (mobile)
   ============================================ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 99;
}

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

/* ============================================
   MISC UTILITIES
   ============================================ */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--color-text-secondary);
}

.mt-md {
  margin-top: var(--space-md);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}