/* =========================================================================
   CubicZo Monitor — stylesheet
   Design intent: a calm, quiet "instrument panel" — plenty of air, one
   confident accent colour, and status colour reserved ONLY for status.
   System font stack on purpose: instant load, works offline in the PWA,
   no external requests.
   ========================================================================= */

:root {
  /* Palette */
  --color-bg:        #F5F6F8;
  --color-surface:   #FFFFFF;
  --color-ink:       #16202B;
  --color-ink-soft:  #5C6773;
  --color-ink-faint: #8A93A0;
  --color-border:    #E5E8EC;
  --color-border-soft: #EEF0F3;

  --color-primary:      #245C58;
  --color-primary-dark: #16403D;
  --color-primary-soft: #E4EEEC;

  --color-up:      #1F9D63;
  --color-up-bg:   #E7F7EF;
  --color-warning: #B9791C;
  --color-warning-bg: #FBF0DD;
  --color-down:    #C4392E;
  --color-down-bg: #FBE9E7;
  --color-pending: #6B7684;
  --color-pending-bg: #EEF0F3;

  /* Type */
  --font-ui:   -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, monospace;

  /* Layout */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(16, 32, 43, 0.06);
  --shadow-md: 0 6px 20px rgba(16, 32, 43, 0.08);
  --sidebar-width: 232px;
  --bottom-nav-height: 64px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  font-size: 15px;
  line-height: 1.5;
  padding-bottom: calc(var(--bottom-nav-height) + 12px);
}

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

h1, h2, h3, h4 { margin: 0 0 4px 0; font-weight: 650; letter-spacing: -0.01em; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h3 { font-size: 15px; }
p { margin: 0 0 8px 0; }

.text-soft { color: var(--color-ink-soft); }
.text-faint { color: var(--color-ink-faint); }
.text-mono { font-family: var(--font-mono); }
.text-sm { font-size: 13px; }

/* ---------------------------------------------------------------------
   App shell / layout
   --------------------------------------------------------------------- */
.app-shell { min-height: 100vh; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--color-ink);
}

.topbar-brand .brand-mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: linear-gradient(155deg, var(--color-primary), var(--color-primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-family: var(--font-mono); font-weight: 700; font-size: 13px;
}

.topbar-user {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
  color: var(--color-ink-soft);
}

.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px;
}

.main-content {
  padding: 16px;
  max-width: 1080px;
  margin: 0 auto;
}

/* Desktop sidebar ------------------------------------------------------ */
.sidebar {
  display: none;
}

@media (min-width: 900px) {
  body { padding-bottom: 0; }

  .app-shell { display: flex; }

  .sidebar {
    display: flex;
    flex-direction: column;
    width: var(--sidebar-width);
    flex-shrink: 0;
    min-height: 100vh;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: 20px 14px;
    position: sticky;
    top: 0;
  }

  .sidebar-brand {
    display: flex; align-items: center; gap: 10px;
    padding: 4px 8px 20px 8px;
    font-weight: 700;
  }

  .sidebar-nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }

  .content-with-sidebar { flex: 1; min-width: 0; }
  .content-with-sidebar .topbar { display: none; }
  .content-with-sidebar .main-content { padding: 28px 32px; }

  .bottom-nav { display: none; }
}

/* Nav items shared style ------------------------------------------------ */
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-ink-soft);
  font-size: 14px;
  font-weight: 500;
}
.nav-item:hover { background: var(--color-bg); text-decoration: none; }
.nav-item.active { background: var(--color-primary-soft); color: var(--color-primary-dark); }
.nav-item .nav-icon { font-size: 16px; width: 18px; text-align: center; }

/* Bottom nav (mobile) ---------------------------------------------------- */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--bottom-nav-height);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  z-index: 30;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.bottom-nav a {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  color: var(--color-ink-faint);
  font-size: 11px;
  font-weight: 600;
}
.bottom-nav a.active { color: var(--color-primary); }
.bottom-nav a:hover { text-decoration: none; }
.bottom-nav .nav-icon { font-size: 19px; }

/* ---------------------------------------------------------------------
   Cards / surfaces
   --------------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 16px;
}

.card + .card { margin-top: 12px; }

.card-link { display: block; color: inherit; }
.card-link:hover { text-decoration: none; border-color: var(--color-primary); }

.stack { display: flex; flex-direction: column; gap: 12px; }

/* Stat summary grid ------------------------------------------------------ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(5, 1fr); }
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: left;
}
.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
}
.stat-card .stat-label {
  font-size: 12px;
  color: var(--color-ink-soft);
  margin-top: 4px;
}
.stat-card.stat-down .stat-value { color: var(--color-down); }
.stat-card.stat-warning .stat-value { color: var(--color-warning); }
.stat-card.stat-up .stat-value { color: var(--color-up); }

/* ---------------------------------------------------------------------
   Website cards
   --------------------------------------------------------------------- */
.website-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.website-card .site-name { font-weight: 650; font-size: 15px; margin-bottom: 2px; }
.website-card .site-url { font-size: 12.5px; color: var(--color-ink-faint); word-break: break-all; }
.website-card .site-meta {
  display: flex; gap: 14px; margin-top: 8px; font-size: 12.5px; color: var(--color-ink-soft);
}
.website-card .site-meta strong { color: var(--color-ink); font-family: var(--font-mono); font-weight: 600; }

.status-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 650;
  white-space: nowrap;
}
.status-up { background: var(--color-up-bg); color: var(--color-up); }
.status-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.status-down { background: var(--color-down-bg); color: var(--color-down); }
.status-pending { background: var(--color-pending-bg); color: var(--color-pending); }

/* ---------------------------------------------------------------------
   Buttons / forms
   --------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px; /* touch target */
  font-family: inherit;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); text-decoration: none; }
.btn-secondary { background: var(--color-surface); color: var(--color-ink); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-bg); text-decoration: none; }
.btn-danger { background: var(--color-down); color: #fff; }
.btn-danger:hover { background: #A82F26; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--color-ink-soft); }
.btn-ghost:hover { background: var(--color-bg); text-decoration: none; }
.btn-sm { min-height: 34px; padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }

.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--color-ink); }
.form-hint { font-size: 12.5px; color: var(--color-ink-faint); margin-top: 5px; }

.form-control {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-ink);
  min-height: 44px;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
select.form-control { appearance: auto; }

.form-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; }

/* ---------------------------------------------------------------------
   Tables (desktop) / stacked cards (mobile)
   --------------------------------------------------------------------- */
.data-table { width: 100%; border-collapse: collapse; display: none; }
.data-table th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-ink-faint); font-weight: 650; padding: 10px 12px; border-bottom: 1px solid var(--color-border);
}
.data-table td { padding: 12px; border-bottom: 1px solid var(--color-border-soft); font-size: 14px; vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }

@media (min-width: 760px) {
  .data-table { display: table; }
  .stacked-rows { display: none; }
}

.row-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 10px;
}
.row-card .row-title { font-weight: 650; margin-bottom: 4px; }
.row-card .row-line { display: flex; justify-content: space-between; font-size: 13px; color: var(--color-ink-soft); margin-top: 4px; }

/* ---------------------------------------------------------------------
   Alerts / flash messages
   --------------------------------------------------------------------- */
.alert {
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 14px;
  border: 1px solid transparent;
}
.alert-success { background: var(--color-up-bg); color: var(--color-up); border-color: #C8ECD9; }
.alert-error   { background: var(--color-down-bg); color: var(--color-down); border-color: #F4CFC9; }
.alert-info    { background: var(--color-primary-soft); color: var(--color-primary-dark); border-color: #CFE3E0; }
.alert-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: #F3DFB6; }

/* ---------------------------------------------------------------------
   Misc
   --------------------------------------------------------------------- */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 11.5px; font-weight: 650;
  background: var(--color-pending-bg); color: var(--color-ink-soft);
}
.badge-admin { background: var(--color-primary-soft); color: var(--color-primary-dark); }
.empty-state {
  text-align: center; padding: 48px 20px; color: var(--color-ink-faint);
}
.empty-state .empty-icon { font-size: 34px; margin-bottom: 10px; }

.divider { border: none; border-top: 1px solid var(--color-border-soft); margin: 16px 0; }

.spark {
  width: 100%; height: 64px;
}

.login-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background: var(--color-bg);
}
.login-card {
  width: 100%; max-width: 380px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px 24px;
}
.login-brand {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  margin-bottom: 20px; text-align: center;
}

.section-label {
  font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-ink-faint); margin: 20px 0 10px 0;
}
.section-label:first-child { margin-top: 0; }