/* ==========================================================================
   BacklogFlow design system
   Style: Minimalism & Swiss Style (enterprise dashboard) — dense spacing,
   navy/blue professional palette, technical monospace accents for numbers.
   Light + dark mode, both defined explicitly (no dependency on a single
   media/attribute source). Zero external requests: system font stack only.
   ========================================================================== */

:root {
  /* Color — light (default) */
  --color-primary: #1e3a5f;
  --color-on-primary: #ffffff;
  --color-secondary: #2563eb;
  --color-on-secondary: #ffffff;
  --color-accent: #059669;
  --color-on-accent: #ffffff;
  --color-background: #f8fafc;
  --color-foreground: #0f172a;
  --color-card: #ffffff;
  --color-card-foreground: #0f172a;
  --color-muted: #f1f3f5;
  --color-muted-foreground: #475569;
  --color-border: #e4e7eb;
  --color-destructive: #dc2626;
  --color-on-destructive: #ffffff;
  --color-warning: #b45309;
  --color-warning-bg: #fef3c7;
  --color-success-bg: #dcfce7;
  --color-success-fg: #047857;
  --color-danger-bg: #fee2e2;
  --color-info-bg: #dbeafe;
  --color-ring: #1e3a5f;
  --sidebar-bg: #142238;
  --sidebar-fg: #b9c6dc;
  --sidebar-fg-active: #ffffff;
  --sidebar-border: #223350;

  /* Type */
  --font-sans: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* Spacing — dense/dashboard scale */
  --space-xs: 2px;
  --space-sm: 4px;
  --space-md: 8px;
  --space-lg: 12px;
  --space-xl: 16px;
  --space-2xl: 24px;
  --space-3xl: 32px;

  /* Shape & elevation */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 24px rgba(15, 23, 42, 0.14);

  --sidebar-width: 248px;
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
}

/* Color — dark (system preference), unless an explicit light choice is stored */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #1e3a5f;
    --color-on-primary: #ffffff;
    --color-secondary: #3b82f6;
    --color-on-secondary: #051022;
    --color-accent: #16a34a;
    --color-on-accent: #04170c;
    --color-background: #020617;
    --color-foreground: #f8fafc;
    --color-card: #0e1223;
    --color-card-foreground: #f8fafc;
    --color-muted: #1a1e2f;
    --color-muted-foreground: #94a3b8;
    --color-border: #334155;
    --color-destructive: #ef4444;
    --color-on-destructive: #08060a;
    --color-warning: #fbbf24;
    --color-warning-bg: #3f2d05;
    --color-success-bg: #06301c;
    --color-success-fg: #4ade80;
    --color-danger-bg: #3a0d0d;
    --color-info-bg: #0b2a4a;
    --color-ring: #60a5fa;
    --sidebar-bg: #05070f;
    --sidebar-fg: #8ea0bd;
    --sidebar-fg-active: #ffffff;
    --sidebar-border: #17233a;
  }
}

/* Color — dark (explicit toggle), wins over system preference either way */
:root[data-theme="dark"] {
  --color-primary: #1e3a5f;
  --color-on-primary: #ffffff;
  --color-secondary: #3b82f6;
  --color-on-secondary: #051022;
  --color-accent: #16a34a;
  --color-on-accent: #04170c;
  --color-background: #020617;
  --color-foreground: #f8fafc;
  --color-card: #0e1223;
  --color-card-foreground: #f8fafc;
  --color-muted: #1a1e2f;
  --color-muted-foreground: #94a3b8;
  --color-border: #334155;
  --color-destructive: #ef4444;
  --color-on-destructive: #08060a;
  --color-warning: #fbbf24;
  --color-warning-bg: #3f2d05;
  --color-success-bg: #06301c;
  --color-success-fg: #4ade80;
  --color-danger-bg: #3a0d0d;
  --color-info-bg: #0b2a4a;
  --color-ring: #60a5fa;
  --sidebar-bg: #05070f;
  --sidebar-fg: #8ea0bd;
  --sidebar-fg-active: #ffffff;
  --sidebar-border: #17233a;
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-background);
  color: var(--color-foreground);
  font-size: 14px;
  line-height: 1.5;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  cursor: pointer;
}
a:hover { text-decoration: underline; }

/* A <button> that opens/closes a modal but should read as an inline text link (e.g. "Editar" in a table row). */
.link-button {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  font: inherit;
  color: var(--color-secondary);
  cursor: pointer;
}
.link-button:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}

.app-shell { display: flex; min-height: 100vh; }

/* ---- Sidebar ------------------------------------------------------- */

.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-fg);
  flex-shrink: 0;
  padding: var(--space-xl) 0;
  border-right: 1px solid var(--sidebar-border);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
  color: #ffffff;
  padding: 0 var(--space-xl) var(--space-xl);
}

.sidebar-brand svg { flex-shrink: 0; }

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

.sidebar-group-title {
  padding: 0 var(--space-xl);
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #64748b;
  margin-bottom: var(--space-sm);
}

.sidebar a {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 7px var(--space-xl);
  color: var(--sidebar-fg);
  font-size: 13px;
  font-weight: 500;
  border-left: 2px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.sidebar a:hover { background: rgba(255, 255, 255, 0.06); color: var(--sidebar-fg-active); text-decoration: none; }
.sidebar a.active {
  background: rgba(37, 99, 235, 0.18);
  color: var(--sidebar-fg-active);
  border-left-color: var(--color-secondary);
  font-weight: 600;
}
.sidebar a svg { flex-shrink: 0; opacity: 0.85; }

.sidebar-hint {
  margin-top: var(--space-lg);
  padding: 0 var(--space-xl);
  font-size: 11.5px;
  line-height: 1.5;
  color: #5b6b87;
}

.sidebar-backdrop { display: none; }
.sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-foreground);
  cursor: pointer;
  flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--color-muted); }

/* ---- Main / topbar --------------------------------------------------- */

.main-content { flex: 1; min-width: 0; }

.topbar {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-heading { display: flex; align-items: center; gap: var(--space-md); }

.topbar-eyebrow {
  margin: 0 0 2px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted-foreground);
}

.topbar h1 { margin: 0; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }

/* ---- Subnav (in-module pill navigation) -------------------------------- */

.subnav {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  position: sticky;
  top: 53px;
  z-index: 9;
}

.subnav-pill {
  flex-shrink: 0;
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--color-muted-foreground);
  background: transparent;
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}
.subnav-pill:hover { background: var(--color-muted); color: var(--color-foreground); text-decoration: none; }
.subnav-pill.active { background: var(--color-secondary); color: var(--color-on-secondary); border-color: var(--color-secondary); font-weight: 600; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-muted-foreground);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.theme-toggle:hover { background: var(--color-muted); color: var(--color-foreground); }

.page-body { padding: var(--space-2xl) var(--space-2xl) 60px; }

/* ---- Cards & grids ---------------------------------------------------- */

.card {
  background: var(--color-card);
  color: var(--color-card-foreground);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 var(--space-lg);
  color: var(--color-foreground);
}

/*
 * KPI strip: the whole KPI section for a dashboard is ONE card
 * (kpi-strip-card), not one card per number — a single headline stat
 * (kpi-hero-row) plus a row of compact, divider-separated stat cells
 * (kpi-strip > kpi-stat). This is the fix for "too many cards stacked
 * on one page": ~10 boxes collapse into 1.
 */
.kpi-strip-card { padding: var(--space-lg) var(--space-xl); }

.kpi-hero-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  padding-bottom: var(--space-lg);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}
.kpi-hero-value {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--color-secondary);
  letter-spacing: -0.02em;
}
.kpi-hero-label { font-size: 13px; color: var(--color-muted-foreground); }

.kpi-strip {
  display: flex;
  flex-wrap: wrap;
  row-gap: var(--space-lg);
}

.kpi-stat {
  flex: 1 1 150px;
  padding: 0 var(--space-lg);
  border-left: 1px solid var(--color-border);
}
.kpi-stat:first-child { border-left: none; padding-left: 0; }

.kpi-stat-value {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.kpi-stat-value svg { flex-shrink: 0; color: var(--color-muted-foreground); }
.kpi-stat-label { font-size: 11.5px; color: var(--color-muted-foreground); margin-top: 2px; }

.kpi-stat.accent-danger .kpi-stat-value { color: var(--color-destructive); }
.kpi-stat.accent-danger .kpi-stat-value svg { color: var(--color-destructive); }
.kpi-stat.accent-warning .kpi-stat-value { color: var(--color-warning); }
.kpi-stat.accent-warning .kpi-stat-value svg { color: var(--color-warning); }
.kpi-stat.accent-success .kpi-stat-value { color: var(--color-success-fg); }
.kpi-stat.accent-success .kpi-stat-value svg { color: var(--color-success-fg); }
.kpi-stat.accent-primary .kpi-stat-value { color: var(--color-secondary); }
.kpi-stat.accent-primary .kpi-stat-value svg { color: var(--color-secondary); }

@media (max-width: 640px) {
  .kpi-stat { border-left: none; flex-basis: 45%; }
}

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

.two-col { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-xl); }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }

@media (max-width: 1000px) {
  .two-col, .three-col { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar-toggle { display: inline-flex; }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    height: 100vh;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }

  .sidebar-backdrop.open {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.55);
    z-index: 40;
  }

  .kpi-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
}

/* ---- Tables ------------------------------------------------------------ */

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
th {
  color: var(--color-muted-foreground);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
tbody tr { transition: background var(--transition-fast); }
tbody tr:hover { background: var(--color-muted); }

/* Scroll-shadow trick (no JS): reveals a soft edge shadow only on the side(s)
   that still have hidden content, so a horizontally-scrollable table on a
   narrow screen visibly hints "there's more" instead of just cutting off. */
.table-scroll {
  overflow-x: auto;
  background-color: var(--color-card);
  background-image:
    linear-gradient(to right, var(--color-card) 50%, rgba(0, 0, 0, 0)),
    linear-gradient(to left, var(--color-card) 50%, rgba(0, 0, 0, 0)),
    linear-gradient(to right, rgba(15, 23, 42, 0.12), rgba(0, 0, 0, 0)),
    linear-gradient(to left, rgba(15, 23, 42, 0.12), rgba(0, 0, 0, 0));
  background-position: left, right, left, right;
  background-repeat: no-repeat;
  background-size: 24px 100%, 24px 100%, 10px 100%, 10px 100%;
  background-attachment: local, local, scroll, scroll;
}

.table-search {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.table-search input {
  max-width: 260px;
  width: 100%;
}
.table-search-count { font-size: 12px; color: var(--color-muted-foreground); white-space: nowrap; }

.sortable-th { cursor: pointer; user-select: none; white-space: nowrap; }
.sortable-th:hover { color: var(--color-foreground); }
.sortable-th::after { content: '↕'; margin-left: 4px; opacity: 0.35; font-size: 10px; }
.sortable-th[data-sort-dir="asc"]::after { content: '↑'; opacity: 1; color: var(--color-secondary); }
.sortable-th[data-sort-dir="desc"]::after { content: '↓'; opacity: 1; color: var(--color-secondary); }

/* ---- Badges & status ---------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-green { background: var(--color-success-bg); color: var(--color-success-fg); }
.badge-yellow { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-red { background: var(--color-danger-bg); color: var(--color-destructive); }
.badge-gray { background: var(--color-muted); color: var(--color-muted-foreground); }
.badge-blue { background: var(--color-info-bg); color: var(--color-secondary); }

.priority-critica { color: var(--color-destructive); font-weight: 700; }
.priority-alta { color: var(--color-warning); font-weight: 600; }
.priority-media { color: var(--color-foreground); }
.priority-baja { color: var(--color-muted-foreground); }

.traffic-light { display: inline-flex; gap: 6px; align-items: center; font-size: 12.5px; }
.traffic-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.traffic-green { background: var(--color-success-fg); box-shadow: 0 0 0 3px var(--color-success-bg); }
.traffic-yellow { background: var(--color-warning); box-shadow: 0 0 0 3px var(--color-warning-bg); }
.traffic-red { background: var(--color-destructive); box-shadow: 0 0 0 3px var(--color-danger-bg); }

.icon-warning { color: var(--color-warning); flex-shrink: 0; }

/* ---- Progress bars -------------------------------------------------- */

.progress-bar { background: var(--color-muted); border-radius: 999px; height: 7px; width: 100%; overflow: hidden; }
.progress-bar-fill { height: 100%; background: var(--color-secondary); transition: width var(--transition-base); }
.progress-bar-fill.complete { background: var(--color-success-fg); }
.progress-bar-label { font-family: var(--font-mono); font-size: 11px; color: var(--color-muted-foreground); margin-top: 3px; }

/* ---- Buttons & toolbars ---------------------------------------------- */

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-xl); gap: var(--space-md); flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-secondary);
  color: var(--color-on-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:hover { background: #1d4ed8; box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(1px); }
.btn-secondary { background: var(--color-muted); color: var(--color-foreground); }
.btn-secondary:hover { background: var(--color-border); }
.btn-danger { background: var(--color-destructive); color: var(--color-on-destructive); }
.btn-danger:hover { opacity: 0.9; }

/* ---- Forms ------------------------------------------------------------- */

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl) var(--space-2xl); }
.form-group { display: flex; flex-direction: column; gap: var(--space-sm); }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--color-muted-foreground); }

input, select, textarea {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-family: inherit;
  background: var(--color-card);
  color: var(--color-foreground);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus, select:focus, textarea:focus {
  border-color: var(--color-ring);
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ring) 20%, transparent);
}
textarea { resize: vertical; min-height: 60px; }
.form-actions { margin-top: var(--space-xl); display: flex; gap: var(--space-md); }

.filters { display: flex; gap: var(--space-md); flex-wrap: wrap; margin-bottom: var(--space-xl); }
.filters select, .filters input { min-width: 160px; }

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* ---- Misc ------------------------------------------------------------- */

.empty-state { color: var(--color-muted-foreground); padding: var(--space-2xl); text-align: center; font-size: 13px; }

.chart-wrap { position: relative; width: 100%; }
.chart-wrap-donut { height: 220px; }

/* ---- Modals (native <dialog>, no JS framework needed) ------------------ */

dialog.modal {
  border: none;
  border-radius: var(--radius-lg);
  padding: 0;
  background: var(--color-card);
  color: var(--color-card-foreground);
  box-shadow: var(--shadow-lg);
  width: min(720px, 92vw);
  max-height: 88vh;
}

dialog.modal::backdrop { background: rgba(2, 6, 23, 0.6); backdrop-filter: blur(2px); }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-card);
}
.modal-header strong { font-size: 14.5px; }

.modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--color-muted-foreground);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.modal-close:hover { background: var(--color-muted); color: var(--color-foreground); }

.modal-body { padding: var(--space-xl); overflow-y: auto; }

/* The shared form.php partial normally renders its own .card; nested inside
   a modal that reads as a redundant double box, so flatten it there. */
.modal-body .card { border: none; box-shadow: none; padding: 0; margin: 0; max-width: none; }

dialog.modal-confirm { width: min(420px, 92vw); }
dialog.modal-confirm .modal-body { padding: var(--space-xl); }
dialog.modal-confirm #bf-confirm-message { margin: 0 0 var(--space-lg); font-size: 14px; }

/* ---- Flash banner (feedback after create/edit/delete) ------------------ */

.flash-banner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xl);
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid transparent;
}
.flash-success { background: var(--color-success-bg); color: var(--color-success-fg); border-color: color-mix(in srgb, var(--color-success-fg) 30%, transparent); }
.flash-error { background: var(--color-danger-bg); color: var(--color-destructive); border-color: color-mix(in srgb, var(--color-destructive) 30%, transparent); }
.flash-banner svg { flex-shrink: 0; }
.flash-dismiss {
  margin-left: auto;
  background: none;
  border: none;
  padding: 2px;
  color: inherit;
  opacity: 0.7;
  cursor: pointer;
}
.flash-dismiss:hover { opacity: 1; }

@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main-content { width: 100%; }
  body { background: #fff; color: #000; }
  .card { box-shadow: none; border: 1px solid #ccc; }
}