/*
 * ALGA TOP dashboard styles.
 * Implements the Meta design system from DESIGN.md: stark white canvas,
 * black pill buttons for actions, cobalt (#0064e0) reserved for primary CTAs,
 * generous rounded cards, tight typographic hierarchy.
 * Optimistic VF is proprietary — we fall back to its documented stack.
 */

:root {
  /* Colors */
  --primary: #0064e0;
  --primary-deep: #0457cb;
  --on-primary: #ffffff;
  --ink-button: #000000;
  --on-ink-button: #ffffff;
  --success: #31a24c;
  --attention: #f2a918;
  --warning: #f7b928;
  --critical: #e41e3f;
  --canvas: #ffffff;
  --surface-soft: #f1f4f7;
  --ink-deep: #0a1317;
  --ink: #1c1e21;
  --charcoal: #444950;
  --slate: #4b4c4f;
  --steel: #5d6c7b;
  --stone: #8595a4;
  --hairline: #ced0d4;
  --hairline-soft: #dee3e9;
  --disabled-text: #bcc0c4;

  /* Radius */
  --r-lg: 8px;
  --r-xl: 16px;
  --r-xxl: 24px;
  --r-xxxl: 32px;
  --r-full: 100px;

  /* Spacing */
  --s-xs: 8px;
  --s-sm: 10px;
  --s-md: 12px;
  --s-base: 16px;
  --s-lg: 20px;
  --s-xl: 24px;
  --s-xxl: 32px;
  --s-xxxl: 40px;
  --s-section: 64px;

  --font: "Optimistic VF", "Montserrat", Helvetica, Arial, "Noto Sans", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--canvas);
  color: var(--ink-deep);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.16px;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- Promo banner ---- */
.promo-banner {
  background: var(--ink-deep);
  color: var(--canvas);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.14px;
  padding: var(--s-md) var(--s-xl);
  text-align: center;
}

/* ---- Top nav ---- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--s-lg);
  height: 64px;
  padding: 0 var(--s-xxl);
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline-soft);
}
.topnav .brand { font-size: 20px; font-weight: 700; letter-spacing: -0.5px; color: var(--ink-deep); }
.topnav .brand span { color: var(--primary); }
.topnav nav { display: flex; gap: var(--s-xs); margin-left: var(--s-lg); }

.pill-tab {
  background: var(--canvas);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.14px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-full);
  padding: 8px 16px;
  cursor: pointer;
}
.pill-tab.active { background: var(--ink-deep); color: var(--canvas); border-color: var(--ink-deep); }

/* ---- Layout ---- */
.container { max-width: 1280px; margin: 0 auto; padding: var(--s-xxl); }
.page-title { font-size: 36px; font-weight: 500; line-height: 1.28; margin: 0 0 var(--s-xs); }
.page-subtitle { color: var(--steel); font-size: 16px; margin: 0 0 var(--s-xl); }
.section-gap { margin-top: var(--s-xxl); }

/* ---- Cards ---- */
.card {
  background: var(--canvas);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--r-xl);
  padding: var(--s-xl);
}
.card.feature { border-radius: var(--r-xxxl); padding: var(--s-xxl); }

.grid { display: grid; gap: var(--s-xl); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

/* ---- Stat tiles ---- */
.stat-tile .label { color: var(--steel); font-size: 14px; font-weight: 700; letter-spacing: -0.14px; }
.stat-tile .value { font-size: 28px; font-weight: 500; margin-top: var(--s-xs); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-xs);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.14px;
  border-radius: var(--r-full);
  padding: 14px 30px;
  border: none;
  cursor: pointer;
  transition: background 150ms ease-out;
}
.btn-primary { background: var(--ink-button); color: var(--on-ink-button); }
.btn-primary:active { background: var(--charcoal); }
.btn-primary:disabled { background: var(--disabled-text); color: var(--canvas); cursor: not-allowed; }
.btn-cta { background: var(--primary); color: var(--on-primary); }
.btn-cta:active { background: var(--primary-deep); }
.btn-secondary {
  background: transparent;
  color: var(--ink-deep);
  border: 2px solid var(--ink-deep);
  padding: 12px 28px;
}
.btn-ghost {
  background: transparent;
  color: var(--ink-deep);
  border: 2px solid rgba(10, 19, 23, 0.12);
  padding: 10px 22px;
}
.btn-sm { padding: 8px 18px; }
a.btn:hover { text-decoration: none; }

/* ---- Forms ---- */
.field { margin-bottom: var(--s-base); }
.field label { display: block; font-size: 14px; font-weight: 700; letter-spacing: -0.14px; margin-bottom: 6px; }
.field-input {
  width: 100%;
  height: 44px;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--s-md);
}
.field-input:focus { outline: none; border: 2px solid #1876f2; }
.field .errorlist { color: var(--critical); font-size: 14px; list-style: none; padding: 0; margin: 6px 0 0; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-base); }

/* ---- Table ---- */
.toolbar { display: flex; align-items: center; gap: var(--s-md); flex-wrap: wrap; margin-bottom: var(--s-base); }
.toolbar .spacer { flex: 1; }

.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: var(--s-md) var(--s-base); text-align: left; border-bottom: 1px solid var(--hairline-soft); }
.data-table th { color: var(--ink); font-weight: 700; letter-spacing: -0.14px; white-space: nowrap; }
.data-table td { color: var(--charcoal); }
.data-table tr:last-child td { border-bottom: none; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.product-cell { display: flex; align-items: center; gap: var(--s-md); }
.product-cell img { width: 40px; height: 40px; border-radius: var(--r-lg); object-fit: contain; background: var(--surface-soft); }
.product-cell .name { font-weight: 700; color: var(--ink); }
.product-cell .brand { color: var(--stone); font-size: 12px; }

/* ---- Badges ---- */
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--r-full);
  padding: 4px 10px;
  color: var(--canvas);
}
.badge-success { background: var(--success); }
.badge-attention { background: var(--attention); }
.badge-warning { background: var(--warning); color: var(--ink-deep); }
.badge-critical { background: var(--critical); }
.badge-muted { background: var(--surface-soft); color: var(--steel); }

/* ---- Messages ---- */
.messages { list-style: none; padding: 0; margin: 0 0 var(--s-base); }
.messages li { border-radius: var(--r-lg); padding: var(--s-md) var(--s-base); margin-bottom: var(--s-xs); font-size: 14px; }
.messages .success { background: rgba(49,162,76,.12); color: var(--success); }
.messages .error { background: rgba(228,30,63,.12); color: var(--critical); }
.messages .info, .messages .debug { background: var(--surface-soft); color: var(--steel); }
.messages .warning { background: rgba(247,185,40,.18); color: #8a6400; }

/* ---- Pagination ---- */
.pagination { display: flex; gap: var(--s-xs); align-items: center; margin-top: var(--s-base); }
.muted { color: var(--steel); font-size: 14px; }

/* ---- HTMX loading indicator ---- */
.htmx-indicator { opacity: 0; transition: opacity 150ms ease-out; }
.htmx-request .htmx-indicator, .htmx-request.htmx-indicator { opacity: 1; }

/* ---- Breadcrumb ---- */
.breadcrumb { font-size: 14px; margin-bottom: var(--s-base); color: var(--steel); }
.breadcrumb .sep { color: var(--stone); margin: 0 6px; }
.breadcrumb .leaf { color: var(--ink); font-weight: 700; }

/* ---- Horizontal scroll for wide month tables ---- */
.table-scroll { overflow-x: auto; }
.table-scroll .data-table { min-width: max-content; }
.table-scroll .data-table th:first-child,
.table-scroll .data-table td:first-child {
  position: sticky; left: 0; background: var(--canvas); z-index: 1;
}

/* ---- Auth ---- */
.auth-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--surface-soft); padding: var(--s-base); }
.auth-card { width: 100%; max-width: 420px; }
.auth-brand { font-size: 24px; font-weight: 700; letter-spacing: -0.5px; margin-bottom: var(--s-lg); }
.auth-brand span { color: var(--primary); }

/* ---- Category tree ---- */
.tree-root { margin-bottom: var(--s-base); }
.tree-root > summary { cursor: pointer; font-weight: 700; font-size: 18px; padding: var(--s-md) 0; }
.tree-children { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-xs); padding: var(--s-xs) 0 var(--s-base) var(--s-lg); }
.tree-children .chip {
  background: var(--surface-soft);
  border-radius: var(--r-lg);
  padding: var(--s-xs) var(--s-md);
  font-size: 14px;
}
.tree-children .chip .code { color: var(--stone); font-size: 12px; }

/* ---- Responsive ---- */
@media (max-width: 1023px) {
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .tree-children { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .container { padding: var(--s-base); }
  .page-title { font-size: 24px; }
  .grid.cols-4, .grid.cols-2, .form-grid, .tree-children { grid-template-columns: 1fr; }
  .topnav { padding: 0 var(--s-base); gap: var(--s-xs); }
  .topnav nav { display: none; }
  .data-table { font-size: 13px; }
}