/* Böğürtlen Design System v1.0 — central tokens and common components */
:root {
  color-scheme: light;

  --color-primary: #1e9e6b;
  --color-primary-hover: #167a54;
  --color-primary-soft: #e2f5ec;
  --color-accent: #34d399;
  --color-background: #f4f5f7;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-muted: #eef0f4;
  --color-border: #dfe3ec;
  --color-border-strong: #b9c0d1;
  --color-text: #14213d;
  --color-text-muted: #5b6070;
  --color-success: #197052;
  --color-warning: #a66314;
  --color-danger: #b13b36;
  --color-info: #315d8b;

  --font-family-base: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-md: 0.9375rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 650;
  --font-weight-bold: 800;
  --line-height-tight: 1.2;
  --line-height-normal: 1.55;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.375rem;
  --shadow-sm: 0 2px 8px rgba(20, 33, 61, 0.05);
  --shadow-md: 0 12px 30px rgba(20, 33, 61, 0.08);
  --shadow-lg: 0 24px 65px rgba(20, 33, 61, 0.13);
  --transition-fast: 140ms ease;
  --transition-normal: 220ms ease;
  --sidebar-width: 278px;
  --header-height: 84px;
  --content-max-width: 1680px;

  --focus-ring: 0 0 0 3px rgba(30, 158, 107, 0.18);
  --control-height: 42px;

  /* Backward-compatible aliases while legacy screens are migrated. */
  --ink: var(--color-text);
  --muted: var(--color-text-muted);
  --line: var(--color-border);
  --paper: var(--color-surface);
  --canvas: var(--color-background);
  --green: var(--color-primary);
  --green-2: var(--color-primary-soft);
  --lime: var(--color-accent);
  --amber: var(--color-warning);
  --amber-bg: #fff3de;
  --red: var(--color-danger);
  --red-bg: #ffebe9;
  --shadow: var(--shadow-md);
  --sidebar: #14213d;
  --sidebar-soft: #1c2c4d;
  --border: var(--color-border);
}

/* Dark-theme foundation; activation is intentionally deferred. */
[data-theme="dark"] {
  color-scheme: dark;
  --color-background: #0b0f1a;
  --color-surface: #141b2e;
  --color-surface-elevated: #1a2238;
  --color-surface-muted: #1b2440;
  --color-border: #28324a;
  --color-border-strong: #3c4766;
  --color-text: #f0f3f8;
  --color-text-muted: #9096a8;
  --color-primary-soft: #173b32;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.18);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 24px 65px rgba(0, 0, 0, 0.34);
}

html { font-family: var(--font-family-base); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; font-feature-settings: "kern" 1, "liga" 1, "calt" 1; }
body { background: var(--color-background); color: var(--color-text); }
svg text, svg { text-rendering: geometricPrecision; }

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: var(--focus-ring);
}

:where(button, input, select, textarea):disabled,
[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.56;
}

/* Buttons */
.ui-button,
.primary-button,
.secondary-button,
.danger-button,
.approve-button,
.text-button {
  display: inline-flex;
  min-height: var(--control-height);
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.ui-button:hover:not(:disabled),
.primary-button:hover:not(:disabled),
.secondary-button:hover:not(:disabled),
.danger-button:hover:not(:disabled),
.approve-button:hover:not(:disabled),
.text-button:hover:not(:disabled) { transform: translateY(-1px); }

.ui-button:active:not(:disabled),
.primary-button:active:not(:disabled),
.secondary-button:active:not(:disabled),
.danger-button:active:not(:disabled),
.approve-button:active:not(:disabled),
.text-button:active:not(:disabled) { transform: translateY(0); }

.ui-button--primary,
.primary-button,
.approve-button {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.ui-button--primary:hover:not(:disabled),
.primary-button:hover:not(:disabled),
.approve-button:hover:not(:disabled) { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.ui-button--secondary,
.secondary-button {
  color: var(--color-primary);
  background: var(--color-surface);
  border-color: var(--color-border);
}

.ui-button--secondary:hover:not(:disabled),
.secondary-button:hover:not(:disabled) { background: var(--color-primary-soft); border-color: var(--color-border-strong); }

.ui-button--tertiary,
.text-button { color: var(--color-primary); background: var(--color-primary-soft); border-color: transparent; }
.ui-button--danger,
.danger-button { color: var(--color-danger); background: #ffebe9; border-color: #efc5bd; }
.ui-button--success { color: #ffffff; background: var(--color-success); border-color: var(--color-success); }
.ui-button--icon { width: var(--control-height); padding: 0; border-radius: 50%; }
.ui-button--link { min-height: auto; padding: 0; color: var(--color-primary); background: transparent; border: 0; }

.ui-button.is-loading,
.ui-button[aria-busy="true"] { pointer-events: none; }
.ui-button.is-loading::before,
.ui-button[aria-busy="true"]::before {
  width: 0.9rem;
  height: 0.9rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  animation: ui-spin 700ms linear infinite;
}

/* Form controls */
.ui-field { display: grid; gap: var(--space-2); min-width: 0; }
.ui-label,
.ui-field > label { color: var(--color-text); font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); }
.ui-required { color: var(--color-danger); }
.ui-help { color: var(--color-text-muted); font-size: var(--font-size-xs); line-height: var(--line-height-normal); }
.ui-error { color: var(--color-danger); font-size: var(--font-size-xs); }

.ui-input,
.ui-select,
.ui-textarea,
:where(input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]):not([type="file"]), select, textarea) {
  width: 100%;
  min-height: var(--control-height);
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  line-height: var(--line-height-normal);
  outline: 0;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.ui-textarea,
textarea { min-height: 6rem; resize: vertical; }

.ui-input:hover:not(:disabled),
.ui-select:hover:not(:disabled),
.ui-textarea:hover:not(:disabled),
:where(input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]):not([type="file"]), select, textarea):hover:not(:disabled) { border-color: var(--color-border-strong); }

.ui-input:focus,
.ui-select:focus,
.ui-textarea:focus,
:where(input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]):not([type="file"]), select, textarea):focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.ui-input[aria-invalid="true"],
.ui-select[aria-invalid="true"],
.ui-textarea[aria-invalid="true"] { border-color: var(--color-danger); }

.ui-input.is-valid,
.ui-select.is-valid,
.ui-textarea.is-valid { border-color: var(--color-success); }

/* Cards and KPI cards */
.ui-card,
.ui-content-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}
.ui-card { padding: var(--space-5); }
.ui-card--elevated { background: var(--color-surface-elevated); box-shadow: var(--shadow-md); }
.ui-card--muted { background: var(--color-surface-muted); box-shadow: none; }

.ui-kpi-card,
.stat-card,
.ai-kpi-card {
  display: grid;
  align-content: space-between;
  gap: var(--space-2);
  border-color: var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}
.ui-kpi-card__value { color: var(--color-text); font-size: var(--font-size-xl); font-weight: var(--font-weight-bold); line-height: var(--line-height-tight); }
.ui-kpi-card__meta { color: var(--color-text-muted); font-size: var(--font-size-xs); }

/* Badges */
.ui-badge,
.status-chip,
.document-status,
.document-kind,
.purchase-status,
.confidence-badge {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: var(--space-1);
  padding: 0.3rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
}
.ui-badge--neutral { color: var(--color-text-muted); background: var(--color-surface-muted); border-color: var(--color-border); }
.ui-badge--success { color: var(--color-success); background: #e7f5ee; border-color: #c9e8da; }
.ui-badge--warning { color: var(--color-warning); background: #fff3de; border-color: #f2d9ae; }
.ui-badge--danger { color: var(--color-danger); background: #ffebe9; border-color: #efc5bd; }
.ui-badge--info { color: var(--color-info); background: #eaf2fa; border-color: #cddfee; }

/* Data-table foundation */
.ui-table-wrap,
.table-wrap,
.account-table-wrap { position: relative; overflow: auto; border-radius: var(--radius-md); }
.ui-table,
:where(.ui-table-wrap, .table-wrap, .account-table-wrap) table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  color: var(--color-text);
  background: var(--color-surface);
  font-size: var(--font-size-sm);
}
.ui-table th,
:where(.ui-table-wrap, .table-wrap, .account-table-wrap) th {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border-strong);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-align: left;
  white-space: nowrap;
}
.ui-table td,
:where(.ui-table-wrap, .table-wrap, .account-table-wrap) td { padding: 0.75rem; border-bottom: 1px solid var(--color-border); font-weight: var(--font-weight-regular); }
.ui-table tbody tr,
:where(.ui-table-wrap, .table-wrap, .account-table-wrap) tbody tr { transition: background var(--transition-fast); }
.ui-table tbody tr:hover,
:where(.ui-table-wrap, .table-wrap, .account-table-wrap) tbody tr:hover { background: var(--color-primary-soft); }
.ui-table tbody tr[aria-selected="true"] { background: var(--color-primary-soft); box-shadow: inset 3px 0 var(--color-primary); }
.ui-table .is-numeric,
.ui-table [data-align="numeric"] { font-variant-numeric: tabular-nums; text-align: right; }

/* Modal and confirmation modal */
.ui-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: rgba(5, 20, 15, 0.62);
  backdrop-filter: blur(3px);
  animation: ui-fade-in var(--transition-fast);
}
.ui-modal {
  width: min(34rem, 100%);
  max-height: min(82vh, 48rem);
  overflow: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text);
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-lg);
}
.ui-modal__header,
.ui-modal__body,
.ui-modal__footer { padding: var(--space-5); }
.ui-modal__header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); border-bottom: 1px solid var(--color-border); }
.ui-modal__header h2 { margin: 0; font-size: var(--font-size-lg); }
.ui-modal__body { color: var(--color-text-muted); line-height: var(--line-height-normal); }
.ui-modal__footer { display: flex; justify-content: flex-end; gap: var(--space-2); border-top: 1px solid var(--color-border); }
.ui-modal__close { min-width: var(--control-height); min-height: var(--control-height); padding: 0; border: 0; border-radius: 50%; color: var(--color-text-muted); background: transparent; font-size: var(--font-size-lg); }
body.ui-modal-open { overflow: hidden; }

/* Toast */
.ui-toast,
.toast {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 1100;
  display: flex;
  max-width: min(26rem, calc(100vw - 2rem));
  min-height: var(--control-height);
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: #ffffff;
  background: var(--color-text);
  box-shadow: var(--shadow-lg);
}
.ui-toast.is-visible,
.toast.show { transform: translateY(0); opacity: 1; }
.ui-toast--success { background: var(--color-success); }
.ui-toast--warning { background: var(--color-warning); }
.ui-toast--danger,
.toast.error { background: var(--color-danger); }
.ui-toast--info { background: var(--color-info); }
/* FAZ M4 — toast metni yanına durum ikonu (yalnız görsel pekiştirme; anlam metinden bağımsız değil). */
.toast::before { content: "✓"; flex: 0 0 auto; font-weight: 700; }
.toast.error::before { content: "!"; }

.ui-sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@keyframes ui-spin { to { transform: rotate(360deg); } }
@keyframes ui-fade-in { from { opacity: 0; } }

@media (max-width: 760px) {
  :root { --control-height: 44px; }
  html, body, .app-shell { max-width: 100%; overflow-x: clip; }
  .app-shell, .sidebar, main, .topbar, .ai-command-strip, .ai-daily-brief { min-width: 0; }
  .sidebar { width: 100%; max-width: 100vw; overflow: hidden; }
  .sidebar nav {
    width: 100%;
    max-width: 100%;
    grid-template-columns: repeat(12, 44px);
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }
  .topbar { align-items: flex-start; flex-direction: column; gap: var(--space-3); }
  .topbar h1, .ai-command-copy, .ai-command-copy strong, .ai-command-copy span { min-width: 0; max-width: 100%; overflow-wrap: anywhere; }
  .top-actions { width: 100%; flex-wrap: wrap; }
  .ai-command-strip { overflow: hidden; }
  .ui-modal-backdrop { align-items: end; padding: 0; }
  .ui-modal { width: 100%; max-height: 90vh; border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
  .ui-modal__footer { padding-bottom: max(var(--space-5), var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px))); }
  .ui-toast,
  .toast { right: var(--space-4); bottom: max(var(--space-4), var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px))); left: var(--space-4); max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}