/* ==========================================================================
   BusinessHub — Design System (Material Design 3, blue + green)
   Shared across every page. Load this before any page-specific CSS.
   ========================================================================== */

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

:root {
  /* ---- Color tokens (MD3 roles) ---- */
  --color-primary: #0B57D0;
  --color-on-primary: #FFFFFF;
  --color-primary-container: #D3E3FD;
  --color-on-primary-container: #041E49;

  --color-secondary: #146C2E;      /* green — success, profit, in-stock */
  --color-on-secondary: #FFFFFF;
  --color-secondary-container: #C0EFC7;
  --color-on-secondary-container: #062E0F;

  --color-error: #B3261E;
  --color-on-error: #FFFFFF;
  --color-error-container: #F9DEDC;
  --color-on-error-container: #410E0B;

  --color-warning: #7A5900;
  --color-warning-container: #FFDEA6;
  --color-on-warning-container: #271900;

  --color-surface: #FEFBFF;
  --color-surface-dim: #DEE3E9;
  --color-surface-container-lowest: #FFFFFF;
  --color-surface-container-low: #F7F9FF;
  --color-surface-container: #F1F4FA;
  --color-surface-container-high: #EBEEF4;
  --color-surface-container-highest: #E5E8EE;

  --color-on-surface: #1A1C1E;
  --color-on-surface-variant: #44474E;
  --color-outline: #74777F;
  --color-outline-variant: #C4C6CF;
  --color-scrim: rgba(0,0,0,0.5);

  /* ---- Shape scale ---- */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 28px;
  --radius-full: 999px;

  /* ---- Elevation (MD3 shadow approximations) ---- */
  --elevation-1: 0 1px 2px rgba(0,0,0,0.30), 0 1px 3px 1px rgba(0,0,0,0.15);
  --elevation-2: 0 1px 2px rgba(0,0,0,0.30), 0 2px 6px 2px rgba(0,0,0,0.15);
  --elevation-3: 0 4px 8px 3px rgba(0,0,0,0.15), 0 1px 3px rgba(0,0,0,0.30);

  /* ---- Spacing scale ---- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* ---- Type scale ---- */
  --font-family: 'Roboto', system-ui, -apple-system, sans-serif;
  --font-family-mono: 'Roboto Mono', monospace;

  color-scheme: light;
}

/* ---- Reset ---- */
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-family);
  background: var(--color-surface-container-low);
  color: var(--color-on-surface);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100dvh;
  overscroll-behavior-y: contain;
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
a { color: var(--color-primary); text-decoration: none; }
ul { list-style: none; }

/* ---- Type scale utility classes ---- */
.display-lg  { font-size: 34px; font-weight: 700; line-height: 1.2; letter-spacing: -0.25px; }
.title-lg    { font-size: 22px; font-weight: 500; line-height: 1.3; }
.title-md    { font-size: 17px; font-weight: 500; line-height: 1.3; }
.title-sm    { font-size: 14px; font-weight: 500; line-height: 1.3; }
.body-lg     { font-size: 16px; font-weight: 400; line-height: 1.5; }
.body-md     { font-size: 14px; font-weight: 400; line-height: 1.45; }
.body-sm     { font-size: 12px; font-weight: 400; line-height: 1.4; }
.label-lg    { font-size: 14px; font-weight: 500; letter-spacing: 0.1px; }
.label-sm    { font-size: 11px; font-weight: 500; letter-spacing: 0.3px; text-transform: uppercase; }
.text-muted  { color: var(--color-on-surface-variant); }
.text-success{ color: var(--color-secondary); }
.text-error  { color: var(--color-error); }
.text-primary{ color: var(--color-primary); }
.mono        { font-family: var(--font-family-mono); }

/* ==========================================================================
   Layout shells
   ========================================================================== */
.app-shell {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  position: relative;
}

.page-content {
  flex: 1;
  padding: var(--space-4) var(--space-4) calc(84px + var(--space-4));
  overflow-y: auto;
}

.page-content--no-nav { padding-bottom: var(--space-5); }

.center-screen {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-5);
  max-width: 480px;
  margin: 0 auto;
}

/* ---- Top app bar ---- */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-outline-variant);
}
.top-bar__title { font-size: 20px; font-weight: 500; flex: 1; }
.top-bar__icon-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  border: none; background: transparent;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-on-surface);
  cursor: pointer;
}
.top-bar__icon-btn:active { background: var(--color-surface-container-high); }

/* ---- Bottom navigation ---- */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: 480px;
  display: flex;
  background: var(--color-surface-container);
  border-top: 1px solid var(--color-outline-variant);
  padding: var(--space-2) var(--space-2) max(var(--space-2), env(safe-area-inset-bottom));
  z-index: 20;
}
.bottom-nav__item {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: var(--space-1) 0;
  border: none; background: none;
  color: var(--color-on-surface-variant);
  cursor: pointer;
  text-decoration: none;
}
.bottom-nav__item svg { width: 24px; height: 24px; }
.bottom-nav__item span { font-size: 11px; font-weight: 500; }
.bottom-nav__item.active { color: var(--color-primary); }
.bottom-nav__item.active .bottom-nav__pill {
  background: var(--color-primary-container);
}
.bottom-nav__pill {
  padding: 2px var(--space-4);
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-full);
  border: none;
  font-size: 14px; font-weight: 500;
  cursor: pointer;
  transition: box-shadow .15s ease, background-color .15s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.4; pointer-events: none; }

.btn--filled { background: var(--color-primary); color: var(--color-on-primary); }
.btn--filled:active { background: #0847B0; }

.btn--filled-secondary { background: var(--color-secondary); color: var(--color-on-secondary); }
.btn--filled-secondary:active { background: #0F5723; }

.btn--tonal { background: var(--color-primary-container); color: var(--color-on-primary-container); }
.btn--outlined { background: transparent; color: var(--color-primary); border: 1px solid var(--color-outline); }
.btn--text { background: transparent; color: var(--color-primary); height: 40px; padding: 0 var(--space-3); }
.btn--error { background: var(--color-error); color: var(--color-on-error); }
.btn--block { width: 100%; }
.btn--sm { height: 36px; padding: 0 var(--space-4); font-size: 13px; }

.icon-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  border: none; background: var(--color-surface-container-high);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--color-on-surface-variant);
}
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn--danger { color: var(--color-error); }

/* ---- FAB ---- */
.fab {
  position: fixed;
  bottom: calc(84px + var(--space-4));
  right: max(var(--space-4), calc((100vw - 480px) / 2 + var(--space-4)));
  width: 56px; height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border: none;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--elevation-2);
  cursor: pointer;
  z-index: 15;
}
.fab svg { width: 26px; height: 26px; }

/* ==========================================================================
   Cards & Surfaces
   ========================================================================== */
.card {
  background: var(--color-surface-container-low);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.card--outlined {
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
}
.card--elevated { box-shadow: var(--elevation-1); background: var(--color-surface-container-lowest); }

.stat-card {
  background: var(--color-surface-container-low);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex; flex-direction: column; gap: 4px;
}
.stat-card__value { font-size: 24px; font-weight: 700; }
.stat-card__label { font-size: 12px; color: var(--color-on-surface-variant); }

.list-row {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-outline-variant);
}
.list-row:last-child { border-bottom: none; }
.list-row__avatar {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  background: var(--color-primary-container); color: var(--color-on-primary-container);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; overflow: hidden; flex-shrink: 0;
}
.list-row__avatar img { width: 100%; height: 100%; object-fit: cover; }
.list-row__body { flex: 1; min-width: 0; }
.list-row__title { font-size: 15px; font-weight: 500; }
.list-row__subtitle { font-size: 13px; color: var(--color-on-surface-variant); }
.list-row__meta { text-align: right; }

/* ---- Chips / badges ---- */
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  height: 24px; padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  font-size: 11px; font-weight: 500;
}
.chip--success { background: var(--color-secondary-container); color: var(--color-on-secondary-container); }
.chip--error { background: var(--color-error-container); color: var(--color-on-error-container); }
.chip--warning { background: var(--color-warning-container); color: var(--color-on-warning-container); }
.chip--neutral { background: var(--color-surface-container-highest); color: var(--color-on-surface-variant); }

/* ==========================================================================
   Forms
   ========================================================================== */
.field { margin-bottom: var(--space-4); }
.field__label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--color-on-surface-variant); margin-bottom: var(--space-1);
}
.field__input, .field__select, .field__textarea {
  width: 100%;
  height: 52px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-outline);
  background: var(--color-surface);
  color: var(--color-on-surface);
  font-size: 16px;
}
.field__textarea { height: auto; padding: var(--space-3) var(--space-4); min-height: 88px; resize: vertical; }
.field__input:focus, .field__select:focus, .field__textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: -1px;
}
.field__input.error, .field__select.error { outline: 2px solid var(--color-error); border-color: var(--color-error); }
.field__error { font-size: 12px; color: var(--color-error); margin-top: 4px; }
.field__hint { font-size: 12px; color: var(--color-on-surface-variant); margin-top: 4px; }

.field__prefix-wrap { position: relative; }
.field__prefix {
  position: absolute; left: var(--space-4); top: 50%; transform: translateY(-50%);
  color: var(--color-on-surface-variant); font-size: 16px; pointer-events: none;
}
.field__prefix-wrap .field__input { padding-left: calc(var(--space-4) + 22px); }

/* ---- Segmented control (role tabs, filters) ---- */
.segmented {
  display: flex;
  background: var(--color-surface-container-high);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}
.segmented__item {
  flex: 1;
  height: 36px;
  border: none; background: transparent;
  border-radius: var(--radius-full);
  font-size: 13px; font-weight: 500;
  color: var(--color-on-surface-variant);
  cursor: pointer;
}
.segmented__item.active { background: var(--color-surface-container-lowest); color: var(--color-primary); box-shadow: var(--elevation-1); }

/* ==========================================================================
   Misc components
   ========================================================================== */
.divider { height: 1px; background: var(--color-outline-variant); margin: var(--space-4) 0; }

.empty-state {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: var(--space-7) var(--space-4);
  color: var(--color-on-surface-variant);
}
.empty-state svg { width: 64px; height: 64px; margin-bottom: var(--space-3); opacity: 0.5; }
.empty-state__title { font-size: 16px; font-weight: 500; color: var(--color-on-surface); margin-bottom: 4px; }

/* ---- Snackbar / toast ---- */
.snackbar-host {
  position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%);
  width: calc(100% - 32px); max-width: 448px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 100; pointer-events: none;
}
.snackbar {
  background: #2E3033; color: #F1F0F4;
  border-radius: var(--radius-xs);
  padding: 14px 16px;
  font-size: 14px;
  box-shadow: var(--elevation-3);
  animation: snackbar-in .2s ease-out;
}
.snackbar--error { background: var(--color-error); }
.snackbar--success { background: var(--color-secondary); }
@keyframes snackbar-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---- Modal / bottom sheet ---- */
.modal-scrim {
  position: fixed; inset: 0; background: var(--color-scrim);
  z-index: 50; display: flex; align-items: flex-end; justify-content: center;
}
.modal-scrim.centered { align-items: center; padding: var(--space-4); }
.bottom-sheet {
  width: 100%; max-width: 480px;
  background: var(--color-surface-container-lowest);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-5) var(--space-4) calc(var(--space-5) + env(safe-area-inset-bottom));
  max-height: 85vh; overflow-y: auto;
  animation: sheet-in .2s ease-out;
}
.dialog {
  width: 100%; max-width: 400px;
  background: var(--color-surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  animation: sheet-in .15s ease-out;
}
@keyframes sheet-in { from { transform: translateY(24px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.sheet-handle {
  width: 32px; height: 4px; border-radius: var(--radius-full);
  background: var(--color-outline-variant);
  margin: 0 auto var(--space-4);
}

/* ---- Loading spinner ---- */
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--color-primary-container);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.spinner--lg { width: 40px; height: 40px; border-width: 4px; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay {
  position: fixed; inset: 0; background: rgba(254,251,255,0.85);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
}

/* ---- Auth screens ---- */
.auth-logo {
  width: 64px; height: 64px; border-radius: var(--radius-lg);
  background: var(--color-primary); color: var(--color-on-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 700; margin-bottom: var(--space-4);
}
.auth-brand-split { color: var(--color-on-primary); }
.auth-brand-split span { color: var(--color-secondary-container); }

/* ---- Utility ---- */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); } .gap-2 { gap: var(--space-2); } .gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.mt-1{margin-top:var(--space-1);} .mt-2{margin-top:var(--space-2);} .mt-3{margin-top:var(--space-3);} .mt-4{margin-top:var(--space-4);} .mt-5{margin-top:var(--space-5);}
.mb-1{margin-bottom:var(--space-1);} .mb-2{margin-bottom:var(--space-2);} .mb-3{margin-bottom:var(--space-3);} .mb-4{margin-bottom:var(--space-4);} .mb-5{margin-bottom:var(--space-5);}
.hidden { display: none !important; }
.w-full { width: 100%; }
.text-center { text-align: center; }

/* ---- Scrollbar (desktop preview) ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-thumb { background: var(--color-outline-variant); border-radius: 3px; }

/* ---- Focus visibility (a11y) ---- */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}