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

/* ── Variables ── */
:root {
  --nav-bg:     #0a0e14;
  --list-bg:    #10141c;
  --chat-bg:    #0c1018;
  --surface:    #12161f;
  --surface2:   #171c27;
  --accent:     #7c8cf8;
  --accent-h:   #6a7af0;
  --accent-rgb: 124,140,248;
  --text:       #e9e6dd;
  --text-muted: #7d8394;
  --text-dim:   #8b90a0;
  --border:     #242b3a;
  --danger:      #d97a72;
  --danger-rgb:  217,122,114;
  --warning:     #d9a45c;
  --warning-rgb: 217,164,92;
  --success:     #7fb88a;
  --success-rgb: 127,184,138;
  --info:        #7db8e8;
  --info-rgb:    125,184,232;
  --row-hover:   rgba(255,255,255,.03);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --font-sans: 'Inter', ui-sans-serif, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

[data-theme="light"] {
  --nav-bg:     #f7f7f9;
  --list-bg:    #ffffff;
  --chat-bg:    #f4f5f7;
  --surface:    #ffffff;
  --surface2:   #eef0f3;
  --accent:     #4b4fe3;
  --accent-h:   #4143c9;
  --accent-rgb: 75,79,227;
  --text:       #15171c;
  --text-muted: #7a8088;
  --text-dim:   #5b6169;
  --border:     #e1e4e9;
  --danger:      #c0453a;
  --danger-rgb:  192,69,58;
  --warning:     #a8701c;
  --warning-rgb: 168,112,28;
  --success:     #2f8f57;
  --success-rgb: 47,143,87;
  --info:        #1d6fb8;
  --info-rgb:    29,111,184;
  --row-hover:   rgba(20,22,28,.035);
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  background: var(--nav-bg);
  color: var(--text);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbars ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── App shell ── */
#app { display: flex; height: 100vh; overflow: hidden; }

/* ── Mobile topbar ── */
#topbar {
  display: none;
  height: 52px; padding: 0 16px; gap: 4px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  align-items: center;
  flex-shrink: 0; position: relative; z-index: 10;
}
#topbar .topbar-brand { font-family: var(--font-mono); font-size: 18px; font-weight: 700; letter-spacing: -.3px; color: var(--text); margin-right: auto; }
#hamburger {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); padding: 6px; border-radius: 6px;
  transition: background .15s;
}
#hamburger:hover { background: var(--surface); color: var(--text); }

/* ── Nav overlay (mobile) ── */
#nav-overlay {
  display: none; position: fixed; inset: 0; z-index: 98;
  background: rgba(0,0,0,.55);
}
#nav-overlay.open { display: block; }

/* ── Nav sidebar ── */
#nav {
  width: 220px; min-width: 220px;
  background: var(--nav-bg);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: transform .25s cubic-bezier(.4,0,.2,1);
  z-index: 99;
}
#nav .brand {
  padding: 18px 16px 16px;
  font-family: var(--font-mono);
  font-size: 24px; font-weight: 700; letter-spacing: -.5px; color: var(--text);
  display: flex; align-items: center;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  text-decoration: none; transition: opacity .15s;
}
#nav .brand:hover { opacity: .8; }
#nav nav {
  flex: 1; padding: 12px 8px;
  display: flex; flex-direction: column; gap: 2px;
  overflow-y: auto;
}
#nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--radius-sm);
  color: var(--text-dim); text-decoration: none;
  font-size: 13px; font-weight: 500;
  transition: background .15s, color .15s;
  white-space: nowrap;
  position: relative;
}
#nav a:hover { background: var(--surface); color: var(--text); }
#nav a.active { background: none; color: var(--accent); font-weight: 600; }
#nav a.active::before {
  content: ''; position: absolute; left: -6px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 14px; background: var(--accent); border-radius: 2px;
}
#nav a svg { flex-shrink: 0; }
#nav .nav-section-label {
  padding: 10px 10px 3px;
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 600;
  letter-spacing: .8px; text-transform: uppercase;
  color: var(--text-muted);
}
#nav .nav-footer {
  padding: 12px 8px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  display: flex; flex-direction: column; gap: 2px;
}
#nav .nav-footer a { color: var(--text-muted); }
#nav .nav-footer a:hover { color: var(--text); background: var(--surface); }
#nav .nav-footer a.nav-exit:hover { color: var(--danger); background: rgba(var(--danger-rgb),.1); }

/* ── Theme toggle ── */
.theme-toggle {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--radius-sm);
  color: var(--text-dim); background: none; border: none;
  font-size: 13px; font-weight: 500; font-family: inherit; cursor: pointer;
  width: 100%; text-align: left;
  transition: background .15s, color .15s;
}
.theme-toggle:hover { background: var(--surface); color: var(--text); }
.theme-toggle svg { flex-shrink: 0; }

/* ── Main content ── */
#main {
  flex: 1; overflow-y: auto;
  background: var(--chat-bg);
  display: flex; flex-direction: column;
}
.page-wrap {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 20px;
}
.page-header { margin-bottom: 4px; }
.page-title  { font-family: var(--font-mono); font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -.01em; }
.page-subtitle { font-size: 13px; color: var(--text-muted); margin-top: 3px; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 20px;
}
.card-title {
  font-size: 14px; font-weight: 600; color: var(--text);
  margin-bottom: 16px;
}

/* ── Metric cards ── */
.metrics-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.metric-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 16px 20px;
}
.metric-label {
  font-family: var(--font-mono);
  font-size: 10.5px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .06em;
}
.metric-value {
  font-family: var(--font-mono);
  font-size: 26px; font-weight: 600; color: var(--text); margin-top: 8px;
  letter-spacing: -.01em; font-variant-numeric: tabular-nums;
}
.metric-sub   { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* Column-count modifiers — only apply above the mobile breakpoint so the
   768px/480px collapse rules below always win on small screens. */
@media (min-width: 769px) {
  .metrics-grid-2 { grid-template-columns: 1fr 1fr; }
  .metrics-grid-4 { grid-template-columns: repeat(4,1fr); }
  .metrics-grid-5 { grid-template-columns: repeat(5,1fr); }
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm); border: none;
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all .15s; font-family: inherit; text-decoration: none;
  white-space: nowrap;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-h); }
.btn-outline { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn-outline:hover:not(:disabled) { background: var(--surface2); color: var(--text); }
.btn-danger  { background: rgba(var(--danger-rgb),.15); color: var(--danger); border: 1px solid rgba(var(--danger-rgb),.3); }
.btn-danger:hover:not(:disabled)  { background: rgba(var(--danger-rgb),.25); }
.btn-warning { background: rgba(var(--warning-rgb),.15); color: var(--warning); border: 1px solid rgba(var(--warning-rgb),.3); }
.btn-warning:hover:not(:disabled) { background: rgba(var(--warning-rgb),.25); }
.btn-success { background: rgba(var(--success-rgb),.15); color: var(--success); border: 1px solid rgba(var(--success-rgb),.3); }
.btn-success:hover:not(:disabled) { background: rgba(var(--success-rgb),.25); }

/* ── Form ── */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label {
  font-family: var(--font-mono);
  font-size: 10.5px; font-weight: 600; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: .06em;
}
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > .field { flex: 1; min-width: 160px; }

input:not([type=checkbox]):not([type=radio]):not([type=file]),
textarea, select {
  width: 100%; padding: 8px 12px;
  background: var(--list-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 13px; font-family: var(--font-sans);
  outline: none; transition: border .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb),.14); }
input::placeholder, textarea::placeholder { color: var(--text-muted); }

/* Autofill de Chrome/Safari fuerza fondo blanco y texto negro ignorando el tema oscuro */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--text);
  -webkit-box-shadow: 0 0 0px 1000px var(--list-bg) inset;
  box-shadow: 0 0 0px 1000px var(--list-bg) inset;
  transition: background-color 9999s ease-in-out 0s;
}
textarea { resize: vertical; }
select { cursor: pointer; }
input[type=checkbox] { width: 16px; height: 16px; cursor: pointer; accent-color: var(--accent); }
input[type=file] {
  padding: 7px 12px; background: var(--list-bg);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-dim); font-size: 13px; width: 100%;
}

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--list-bg);
}
tbody td {
  padding: 9px 14px; color: var(--text);
  font-family: var(--font-mono); font-size: 12.5px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody td:first-child { font-family: var(--font-sans); font-size: 13px; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--row-hover); }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .04em;
  padding: 3px 8px; border-radius: 99px;
}
.badge-green  { background: rgba(var(--success-rgb),.12); color: var(--success); }
.badge-red    { background: rgba(var(--danger-rgb),.12);  color: var(--danger); }
.badge-blue   { background: rgba(var(--info-rgb),.12);    color: var(--info); }
.badge-yellow { background: rgba(var(--warning-rgb),.12); color: var(--warning); }
.badge-gray   { background: rgba(125,131,148,.12);        color: var(--text-muted); }

/* ── Alerts ── */
.alert {
  padding: 12px 16px; border-radius: var(--radius-md); font-size: 13px;
  display: flex; align-items: flex-start; gap: 10px; line-height: 1.5;
}
.alert-success { background: rgba(var(--success-rgb),.12); color: var(--success); border: 1px solid rgba(var(--success-rgb),.25); }
.alert-error   { background: rgba(var(--danger-rgb),.12);  color: var(--danger);  border: 1px solid rgba(var(--danger-rgb),.25); }
.alert-info    { background: rgba(var(--info-rgb),.12);    color: var(--info);    border: 1px solid rgba(var(--info-rgb),.25); }
.alert-warning { background: rgba(var(--warning-rgb),.12); color: var(--warning); border: 1px solid rgba(var(--warning-rgb),.25); }

/* ── Progress bar ── */
.progress-wrap  { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.progress-bar   { height: 100%; border-radius: 3px; transition: width .4s; background: var(--accent); }
.progress-bar.warn   { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }

/* ── Editable cells ── */
.editable { cursor: pointer; border-radius: 4px; padding: 2px 6px; transition: background .15s; }
.editable:hover { background: var(--surface2); }

/* ── Login ── */
#login-topbar {
  position: fixed; top: 18px; left: 20px; z-index: 2;
  font-family: var(--font-mono); font-size: 24px; font-weight: 700;
  letter-spacing: -.5px; color: var(--text); text-decoration: none;
}
.login-wrap {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center;
  background: var(--nav-bg); padding: 16px;
  position: relative; overflow: hidden;
}
.login-wrap::before {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 640px; height: 640px; transform: translate(-50%,-50%);
  background: radial-gradient(circle, rgba(var(--accent-rgb),.16), transparent 65%);
  pointer-events: none;
}
.login-box {
  position: relative; z-index: 1;
  width: 100%; max-width: 380px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 32px;
  box-shadow: 0 20px 50px -20px rgba(0,0,0,.5);
}
/* h1 solo lo usa cambiar-password.html (login.html ya no repite la marca acá) */
.login-box h1 { font-family: var(--font-mono); font-size: 32px; font-weight: 800; color: var(--text); letter-spacing: -.02em; line-height: 1; margin-bottom: 4px; }
.login-box p  { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.login-box .link { color: var(--accent); text-decoration: none; font-size: 13px; }
.login-box .link:hover { text-decoration: underline; }
.login-box .btn-primary { padding: 10px 16px; font-size: 14px; font-weight: 600; border-radius: var(--radius-md); }

/* ── Toast ── */
#toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--surface2); color: var(--text);
  padding: 10px 16px; border-radius: var(--radius-md); font-size: 13px;
  border: 1px solid var(--border); box-shadow: 0 4px 20px rgba(0,0,0,.3);
  display: none; z-index: 999; max-width: 320px;
}

/* ── Divider ── */
.divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ── Empty state (mejorado) ── */
.empty-state {
  text-align: center; padding: 52px 24px;
  color: var(--text-muted); font-size: 13px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.empty-state svg { opacity: .18; }
.empty-state strong { color: var(--text-dim); font-size: 14px; }
.empty-state p { color: var(--text-muted); font-size: 12px; max-width: 260px; line-height: 1.6; }

/* ── Skeleton loaders ── */
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position:  400px 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface2) 50%, var(--surface) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.4s infinite linear;
  border-radius: 4px;
}
.skeleton-text  { height: 13px; width: 100%; }
.skeleton-title { height: 16px; width: 60%; }
.skeleton-value { height: 28px; width: 40%; }
.skeleton-row   { display: flex; flex-direction: column; gap: 8px; padding: 14px 20px; border-bottom: 1px solid var(--border); }
.skeleton-badge { height: 20px; width: 80px; border-radius: 99px; }

/* ── Animaciones de entrada ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp .25s ease-out; }

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.fade-in { animation: fadeIn .2s ease-out; }

/* Cards con hover elevado */
.card { transition: box-shadow .2s, border-color .2s; }
.card:hover { box-shadow: 0 1px 3px rgba(0,0,0,.12); border-color: var(--text-muted); }

/* Metric cards con entrada escalonada */
.metrics-grid .metric-card:nth-child(1) { animation: fadeUp .2s ease-out; }
.metrics-grid .metric-card:nth-child(2) { animation: fadeUp .25s ease-out; }
.metrics-grid .metric-card:nth-child(3) { animation: fadeUp .3s ease-out; }
.metrics-grid .metric-card:nth-child(4) { animation: fadeUp .35s ease-out; }
.metrics-grid .metric-card:nth-child(5) { animation: fadeUp .4s ease-out; }

/* ── Helpers ── */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.text-dim   { color: var(--text-dim); }
.text-sm    { font-size: 12px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mb-4 { margin-bottom: 16px; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.w-full { width: 100%; }

/* ── Responsive ── */
@media (max-width: 768px) {
  /* Nav becomes an off-canvas drawer */
  #app { flex-direction: column; }
  #topbar { display: flex; }
  #nav {
    position: fixed; top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 24px rgba(0,0,0,.6);
  }
  #nav.open { transform: translateX(0); }
  #main { overflow-y: auto; }

  /* Content */
  .page-wrap { padding: 16px 14px; gap: 14px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .row { flex-direction: column; gap: 0; }
  .row > .field { min-width: unset; }
  .card { padding: 16px; }

  /* Tables scroll horizontally — hide less important cols */
  .table-wrap { -webkit-overflow-scrolling: touch; }
}

@media (max-width: 480px) {
  .metrics-grid { grid-template-columns: 1fr; }
  .btn-sm { font-size: 11px; padding: 4px 8px; }
}