/*
 * Shared stylesheet for the public shortener page and the admin dashboard.
 *
 * Sourced from /static/styles.css (Express serves public/ under /static).
 *
 * Variables are split into two groups:
 *   1. Kinetico brand palette (--kcolor-*) — supplied verbatim from the
 *      design system and used as the canonical source of truth.
 *   2. Local semantic aliases (--bg, --panel, etc.) — derived from the
 *      kcolor variables. Component CSS only references the aliases, so we
 *      can re-skin the whole app by editing this one block.
 */
:root {
  /* Primary */
  --kcolor-deep-sea: #002A42;
  --kcolor-deep-sea-tint-1: #184A67;
  --kcolor-deep-sea-tint-2: #4C7288;
  --kcolor-deep-sea-tint-3: #809AA9;
  --kcolor-deep-sea-tint-4: #CCD7DC;

  /* Secondary */
  --kcolor-dark-blue: #CCD7DC;
  --kcolor-ada-light-blue: #5FB3DD;
  --kcolor-ada-kinetico-green: #24DBB6;

  /* Neutrals */
  --kcolor-slate: #63666A;
  --kcolor-gray: #727D84;
  --kcolor-light-steel: #E9EAEA;
  --kcolor-white: #FFFFFF;

  /* Status */
  --kcolor-error: #9E231D;
  --kcolor-light-error: #ff8080;

  /* Local semantic aliases — point at the kcolor palette. */
  --bg: var(--kcolor-deep-sea);
  --darken: rgba(0,0,0,.5);
  --panel: var(--kcolor-deep-sea-tint-1);
  --panel-2: var(--kcolor-deep-sea-tint-2);
  --border: var(--kcolor-deep-sea-tint-2);
  --text: var(--kcolor-white);
  --muted: var(--kcolor-deep-sea-tint-4);
  --accent: var(--kcolor-ada-light-blue);
  --accent-strong: var(--kcolor-ada-kinetico-green);
  --error: var(--kcolor-light-error);
  --ok: var(--kcolor-ada-kinetico-green);
  --danger: var(--kcolor-error);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ------------------------------------------------------------------ */
/* Brand header (logo, centered at the top of every page)             */
/* ------------------------------------------------------------------ */
.brand {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 28px 16px 12px;
}
.brand img {
  max-width: 220px;
  max-height: 80px;
  width: auto;
  height: auto;
  display: block;
}

/* ------------------------------------------------------------------ */
/* Shared form / button / dialog styles                               */
/* ------------------------------------------------------------------ */
input[type="url"],
input[type="text"],
input[type="password"],
input[type="search"] {
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color 0.15s;
}
::placeholder {
  color: #bbb;
  opacity: 1; /* Overrides Firefox's default translucency */
}
input:focus { border-color: var(--accent); }

button {
  padding: 0 22px;
  border-radius: 10px;
  border: 1px solid var(--accent-strong);
  background: var(--accent-strong);
  color: var(--kcolor-deep-sea);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}
button:hover { background: var(--darken); color: var(--kcolor-white); border-color: var(--darken); }
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.5; cursor: progress; }

.btn {
  padding: 9px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}
.btn:hover { background: var(--panel-2); }
.btn.primary {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: var(--kcolor-deep-sea);
}
.btn.primary:hover { background: var(--darken); color: var(--kcolor-white); border-color: var(--darken); }
.btn.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn.danger:hover { background: rgba(158, 35, 29, 0.15); }

dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  max-width: 480px;
  width: 90%;
}
dialog::backdrop { background: rgba(0, 0, 0, 0.6); }
dialog h3 { margin: 0 0 12px; font-size: 18px; }
dialog input[type="text"],
dialog input[type="email"],
dialog input[type="url"],
dialog input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
  margin-bottom: 12px;
}
.dialog-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 4px;
}

.error {
  background: rgba(255, 128, 128, 0.12);
  border: 1px solid var(--error);
  color: var(--error);
  border-radius: 10px;
  padding: 12px 16px;
}

/* ------------------------------------------------------------------ */
/* Shortener page (index.html)                                        */
/* ------------------------------------------------------------------ */
.page-shortener {
  display: grid;
  place-items: start center;
  padding: 0 24px 96px;
}
.page-shortener main { width: 100%; max-width: 640px; }
.page-shortener .nav {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}
.page-shortener .nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.page-shortener .nav a:hover { color: var(--accent); }
.page-shortener h1 { margin: 0 0 8px; font-size: 28px; letter-spacing: -0.02em; }
.page-shortener p.tagline { margin: 0 0 24px; color: var(--muted); }

.key-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 16px;
  font-size: 14px;
}
.key-bar label { color: var(--muted); white-space: nowrap; }
.key-bar input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 14px;
  font-family: ui-monospace, Menlo, monospace;
  padding: 0;
}
.key-bar .save-key {
  padding: 6px 12px;
  font-size: 13px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 500;
}
.key-bar .save-key.saved { color: var(--ok); border-color: var(--ok); }

form#form { display: flex; gap: 8px; margin-bottom: 24px; }
form#form input[type="url"] { flex: 1; }

.result {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  display: none;
  margin-top: 16px;
}
.result.show { display: block; }
.result .row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.result a.short {
  flex: 1;
  color: var(--accent);
  text-decoration: none;
  font-size: 18px;
  word-break: break-all;
}
.result a.short:hover { text-decoration: underline; }
.copy-btn {
  padding: 8px 14px;
  font-size: 14px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 500;
}
.copy-btn:hover { background: var(--panel-2); }

.qr-wrap { display: flex; align-items: center; gap: 20px; margin-top: 8px; }
/* Checkerboard so transparent QRs are visible */
.qr-wrap img {
  width: 180px;
  height: 180px;
  background-color: var(--kcolor-white);
  background-image:
    linear-gradient(45deg, #d8d8d8 25%, transparent 25%),
    linear-gradient(-45deg, #d8d8d8 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #d8d8d8 75%),
    linear-gradient(-45deg, transparent 75%, #d8d8d8 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  border-radius: 8px;
  padding: 8px;
}
.qr-wrap img.solid-bg {
  background-image: none;
  background-color: var(--kcolor-white);
}
.qr-meta { color: var(--muted); font-size: 14px; line-height: 1.7; }
.qr-meta .target {
  color: var(--text);
  word-break: break-all;
  display: block;
  margin-top: 4px;
}

.badge {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(95, 179, 221, 0.15);
  color: var(--accent);
  margin-left: 8px;
}
.badge.reused {
  background: rgba(36, 219, 182, 0.15);
  color: var(--ok);
}

.downloads { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.download { color: var(--accent); text-decoration: none; font-size: 14px; }
.download:hover { text-decoration: underline; }

.bg-toggle {
  display: inline-flex;
  gap: 4px;
  margin-top: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px;
}
.bg-toggle button {
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  background: transparent;
  color: var(--muted);
  border: none;
  border-radius: 999px;
}
.bg-toggle button.active {
  background: var(--accent-strong);
  color: var(--kcolor-deep-sea);
}

footer {
  margin-top: 48px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

/* Shortener: error message styling (overrides shared .error background) */
.page-shortener .error {
  background: transparent;
  border: none;
  padding: 0;
  margin-top: 12px;
  min-height: 1.5em;
}

/* ------------------------------------------------------------------ */
/* Admin dashboard (admin.html)                                       */
/* ------------------------------------------------------------------ */
.page-admin {
  padding: 0 24px 80px;
  font-size: 15px;
  line-height: 1.5;
}
.page-admin main { max-width: 1100px; margin: 0 auto; }
.page-admin .nav {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}
.page-admin .nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.page-admin .nav a:hover { color: var(--accent); }
.page-admin h1 { margin: 0 0 4px; font-size: 26px; letter-spacing: -0.02em; }
.page-admin .sub { color: var(--muted); margin: 0 0 24px; font-size: 14px; }

/* Admin: error banner sits in the document flow with margin-bottom */
.page-admin #errorBox { margin-bottom: 16px; }

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.tab {
  padding: 10px 16px;
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tab:hover { color: var(--text); }
.tabpanel { display: none; }
.tabpanel.active { display: block; }

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}
.toolbar input[type="search"],
.toolbar select {
  flex: 1;
  min-width: 200px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
  outline: none;
}
.toolbar select { flex: 0 0 auto; min-width: 160px; }
.toolbar input:focus,
.toolbar select:focus { border-color: var(--accent); }

.stats { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  min-width: 140px;
}
.stat .v { font-size: 22px; font-weight: 600; }
.stat .l {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
th, td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
th {
  background: var(--panel-2);
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  user-select: none;
}
th .arrow { color: var(--accent); margin-left: 4px; font-size: 10px; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--darken); }
td.slug { font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
td.slug a { color: var(--accent); text-decoration: none; }
td.slug a:hover { text-decoration: underline; }
td.target {
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}
td.target a { color: var(--text); text-decoration: none; }
td.target a:hover { color: var(--accent); text-decoration: underline; }
td.hits { font-variant-numeric: tabular-nums; }
td.created { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
td.by { color: var(--muted); font-size: 13px; }
td.actions { white-space: nowrap; }

.icon-btn {
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-weight: 500;
}
.icon-btn:hover { color: var(--text); background: var(--panel-2); }
.icon-btn.danger:hover { color: var(--danger); border-color: var(--danger); }

/* Report-specific styles */
.report-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.card h3 {
  margin: 0 0 14px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.bar-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 6px 0;
  border-top: 1px solid var(--border);
}
.bar-row:first-child { border-top: none; }
.bar-row .label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bar-row .flag { font-size: 16px; }
.bar-row .bar-container {
  flex: 1;
  height: 8px;
  background: var(--panel-2);
  border-radius: 4px;
  margin-left: 8px;
  overflow: hidden;
  min-width: 60px;
}
.bar-row .bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  border-radius: 4px;
}
.bar-row .count {
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--muted);
  min-width: 50px;
  text-align: right;
}
.empty-card {
  color: var(--muted);
  font-size: 14px;
  padding: 20px 0;
  text-align: center;
}
.chart-wrap { padding: 4px 0 0; }
.chart-wrap svg { width: 100%; height: 160px; display: block; }

.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.empty h2 { color: var(--text); margin: 0 0 6px; font-size: 18px; }