/* =====================================================
   tagIt — Neo-Brutalist Design System
   Single source of truth for all UI.
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap');

/* ─── TOKENS ─── */
:root {
  --bg: #ffffff;
  --fg: #000000;
  --muted: #555555;
  --border: 2px solid #000000;
  --border-thin: 1px solid #000000;
  --shadow: 4px 4px 0 #000000;
  --shadow-sm: 2px 2px 0 #000000;
  --shadow-lg: 6px 6px 0 #000000;
  --radius: 0;
  --font: 'JetBrains Mono', 'Courier New', Courier, monospace;
  --transition: 80ms ease;
  --danger: #cc0000;
  --success: #007700;
  --warn: #cc7700;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

img { display: block; max-width: 100%; }

ul, ol { list-style: none; }

input, button, select, textarea { font-family: inherit; font-size: inherit; }

/* ─── TYPOGRAPHY ─── */
h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.25rem, 3vw, 1.75rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 700; }
h4 { font-size: 1rem; font-weight: 600; }
p  { line-height: 1.6; }
small { font-size: 0.75rem; }

.mono { font-family: var(--font); }
.muted { color: var(--muted); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.fw-bold { font-weight: 700; }
.uppercase { text-transform: uppercase; letter-spacing: 0.1em; }

/* ─── LAYOUT ─── */
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 1rem; }
.page-wrap { padding: 2rem 1rem 6rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.flex-wrap { flex-wrap: wrap; }
.grow { flex-grow: 1; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .hide-mobile { display: none !important; }
}

/* ─── NAV / HEADER ─── */
.site-header {
  border-bottom: var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.site-logo span { display: inline-block; animation: blink 1s step-end infinite; }

.site-nav { display: flex; gap: 1rem; align-items: center; }
.site-nav a { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }

/* ─── BOTTOM TAB BAR (mobile dashboard) ─── */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  border-top: var(--border);
  background: var(--bg);
  z-index: 200;
}

.tab-bar-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 0.25rem;
  cursor: pointer;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-right: var(--border-thin);
  user-select: none;
  transition: background var(--transition), color var(--transition);
  gap: 0.2rem;
}

.tab-bar-item:last-child { border-right: none; }

.tab-bar-item svg { width: 20px; height: 20px; }

.tab-bar-item.active,
.tab-bar-item:hover {
  background: var(--fg);
  color: var(--bg);
}

/* ─── TAB PANELS ─── */
.tabs { display: flex; border-bottom: var(--border); overflow-x: auto; }
.tabs-btn {
  padding: 0.6rem 1.25rem;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-right: var(--border-thin);
  background: none;
  border-top: none;
  border-bottom: none;
  border-left: none;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.tabs-btn.active,
.tabs-btn:hover {
  background: var(--fg);
  color: var(--bg);
}

.tab-panel { display: none; padding: 1.5rem 0; }
.tab-panel.active { display: block; }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border: var(--border);
  background: var(--bg);
  color: var(--fg);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:hover { background: var(--fg); color: var(--bg); }
.btn:active { transform: translate(2px, 2px); box-shadow: none; }

.btn-primary { background: var(--fg); color: var(--bg); }
.btn-primary:hover { background: #333; color: var(--bg); }

.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: var(--bg); }

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.75rem; box-shadow: var(--shadow-sm); }
.btn-lg { padding: 0.8rem 2rem; font-size: 1rem; box-shadow: var(--shadow); }
.btn-full { width: 100%; }

.btn:disabled { opacity: 0.45; pointer-events: none; }

/* ─── INPUTS ─── */
.input {
  display: block;
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: var(--border);
  background: var(--bg);
  color: var(--fg);
  font-size: 0.9rem;
  outline: none;
  transition: box-shadow var(--transition);
}

.input:focus { box-shadow: var(--shadow-sm); }
.input::placeholder { color: #aaa; }

.input-group { display: flex; flex-direction: column; gap: 0.35rem; }
.input-label { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.input-hint { font-size: 0.75rem; color: var(--muted); }
.input-error { font-size: 0.75rem; color: var(--danger); display: none; }
.input-error.show { display: block; }

/* Color picker special */
.input-color {
  height: 2.5rem;
  padding: 0.2rem;
  cursor: pointer;
}

/* ─── CARDS ─── */
.card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  background: var(--bg);
  position: relative;
}

.card:hover { box-shadow: var(--shadow-lg); }
.card-sm { padding: 0.75rem 1rem; }
.card-flat { box-shadow: none; }

/* ─── BADGES ─── */
.badge {
  display: inline-block;
  padding: 0.1rem 0.55rem;
  border: var(--border-thin);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.badge-activated { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.badge-registered { background: var(--bg); color: var(--fg); }
.badge-unregistered { border-style: dashed; color: var(--muted); }
.badge-admin { background: var(--fg); color: var(--bg); }
.badge-user { background: var(--bg); color: var(--fg); }
.badge-danger { border-color: var(--danger); color: var(--danger); }
.badge-success { border-color: var(--success); color: var(--success); }

/* ─── TABLES ─── */
.table-wrap { overflow-x: auto; border: var(--border); }

table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

table.table th,
table.table td {
  padding: 0.6rem 0.85rem;
  border-bottom: var(--border-thin);
  text-align: left;
  white-space: nowrap;
}

table.table th {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.75rem;
  border-bottom: var(--border);
  background: var(--fg);
  color: var(--bg);
}

table.table tr:last-child td { border-bottom: none; }
table.table tr:hover td { background: #f5f5f5; }

/* ─── PAGE HEADER ─── */
.page-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.page-header::before {
  content: '>';
  font-weight: 800;
  font-size: 1.1rem;
}

/* ─── SECTION DIVIDER ─── */
.divider {
  border: none;
  border-top: var(--border-thin);
  margin: 1.5rem 0;
}

/* ─── MODALS ─── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 500;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg);
  border: var(--border);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-bottom: var(--border);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.modal-body { padding: 1.25rem; display: flex; flex-direction: column; gap: 1rem; }
.modal-footer { padding: 1rem 1.25rem; border-top: var(--border); display: flex; gap: 0.5rem; justify-content: flex-end; }

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  font-weight: 700;
}

/* ─── ALERT / NOTICE BANNERS ─── */
.alert {
  padding: 0.75rem 1rem;
  border: var(--border-thin);
  font-size: 0.85rem;
  display: none;
}
.alert.show { display: block; }
.alert-error { border-color: var(--danger); color: var(--danger); background: #fff5f5; }
.alert-success { border-color: var(--success); color: var(--success); background: #f5fff5; }
.alert-warn { border-color: var(--warn); color: var(--warn); background: #fffcf0; }

/* ─── STATS ROW ─── */
.stats-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

.stat-box {
  flex: 1;
  min-width: 120px;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  text-align: center;
}

.stat-num { font-size: 2rem; font-weight: 800; line-height: 1; }
.stat-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-top: 0.25rem; }

/* ─── BAR CHART ─── */
.bar-chart { display: flex; flex-direction: column; gap: 0.6rem; }

.bar-item { display: flex; align-items: center; gap: 0.75rem; font-size: 0.8rem; }
.bar-label { width: 80px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; flex-shrink: 0; }
.bar-track { flex: 1; background: #eee; border: var(--border-thin); height: 1.25rem; position: relative; overflow: hidden; }
.bar-fill { height: 100%; background: var(--fg); transition: width 0.4s ease; }
.bar-val { width: 32px; text-align: right; font-weight: 700; }

/* ─── LINK PAGE CARD ─── */
.link-card {
  display: block;
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2px solid currentColor;
  font-weight: 700;
  font-size: 0.95rem;
  text-align: center;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  box-shadow: 3px 3px 0 currentColor;
  text-decoration: none;
}

.link-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 currentColor;
  text-decoration: none;
}

/* ─── LINK EDITOR DRAG ITEM ─── */
.link-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: var(--border-thin);
  padding: 0.5rem;
  background: var(--bg);
  cursor: grab;
  margin-bottom: 0.4rem;
}
.link-row:active { cursor: grabbing; }
.link-row .drag-handle { color: var(--muted); font-size: 1rem; user-select: none; flex-shrink: 0; }

/* ─── EDITOR LAYOUT ─── */
.editor-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  min-height: 600px;
}

@media (max-width: 768px) {
  .editor-layout { grid-template-columns: 1fr; }
  .editor-preview { display: none; }
}

.editor-preview {
  border: var(--border);
  overflow: hidden;
  position: sticky;
  top: 70px;
  height: calc(100vh - 80px);
}

.editor-preview iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ─── CARD STATE PAGE ─── */
.state-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  text-align: center;
}

.state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* ─── LANDING PAGE ─── */
.hero {
  padding: 5rem 1rem 4rem;
  text-align: center;
  border-bottom: var(--border);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-pre {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 1rem;
}

.hero h1 { margin-bottom: 1.25rem; }

.hero-sub {
  font-size: 1rem;
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

.features {
  padding: 3rem 1rem;
  border-bottom: var(--border);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.feature-card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.25rem;
}

.feature-icon { font-size: 1.5rem; margin-bottom: 0.75rem; }
.feature-title { font-weight: 800; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.5rem; }
.feature-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

.how-it-works {
  padding: 3rem 1rem;
  border-bottom: var(--border);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.steps { display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; max-width: 600px; }

.step {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  border: var(--border-thin);
  padding: 1rem;
}

.step-num {
  font-size: 1.5rem;
  font-weight: 800;
  flex-shrink: 0;
  width: 2rem;
  line-height: 1;
}

.site-footer {
  border-top: var(--border);
  padding: 1.5rem 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ─── AUTH FORMS ─── */
.auth-wrap {
  min-height: calc(100vh - 60px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  border: var(--border);
  box-shadow: var(--shadow-lg);
}

.auth-header {
  padding: 1.25rem 1.5rem;
  border-bottom: var(--border);
  font-weight: 800;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.auth-body { padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; }
.auth-footer { padding: 1rem 1.5rem; border-top: var(--border); font-size: 0.8rem; color: var(--muted); }

/* ─── DASHBOARD HEADER ─── */
.dash-header {
  padding: 1rem;
  border-bottom: var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dash-title { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; }
.dash-user { font-size: 0.8rem; color: var(--muted); }

/* ─── CARD GRID ─── */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.75rem; }

.nfc-card {
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}
.nfc-card:hover { box-shadow: var(--shadow); transform: translate(-1px, -1px); }

.nfc-card-id { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.5rem; word-break: break-all; }
.nfc-card-badges { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.nfc-card-taps { font-size: 0.7rem; color: var(--muted); margin-top: 0.5rem; }

.add-card-btn {
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-style: dashed;
  transition: background var(--transition);
}
.add-card-btn:hover { background: var(--fg); color: var(--bg); }

/* ─── VCARD PREVIEW ─── */
.vcard-preview {
  border: var(--border);
  padding: 1.5rem;
  background: var(--fg);
  color: var(--bg);
  display: none;
}
.vcard-preview.show { display: block; }
.vcard-preview .vcard-name { font-size: 1.25rem; font-weight: 800; margin-bottom: 0.25rem; }
.vcard-preview .vcard-field { font-size: 0.85rem; display: flex; gap: 0.5rem; margin-top: 0.3rem; }
.vcard-preview .vcard-label { text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.08em; opacity: 0.6; min-width: 60px; }

/* ─── SCAN ANIMATION ─── */
.scan-anim {
  width: 80px;
  height: 80px;
  border: var(--border);
  margin: 0 auto 1.5rem;
  position: relative;
  overflow: hidden;
}

.scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: var(--fg);
  animation: scanmove 1.5s linear infinite;
}

/* ─── EMPTY STATES ─── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  border: var(--border);
  border-style: dashed;
  color: var(--muted);
}

.empty-state p { font-size: 0.85rem; margin-top: 0.5rem; }

/* ─── LOADING SPINNER ─── */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--fg);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.5s linear infinite;
}

/* ─── OFFLINE / 404 ─── */
.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.error-code { font-size: clamp(3rem, 15vw, 7rem); font-weight: 800; line-height: 1; }
.error-msg { font-size: 0.9rem; color: var(--muted); margin: 1rem 0 2rem; }

/* ─── SCANLINES (CRT EFFECT) ─── */
.scanlines {
  position: relative;
  overflow: hidden;
}

.scanlines::after {
  content: '';
  pointer-events: none;
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.04) 2px,
    rgba(0,0,0,0.04) 4px
  );
}

/* ─── TOAST / SNACKBAR ─── */
.toast-container {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
  pointer-events: none;
}

.toast {
  padding: 0.6rem 1.1rem;
  border: var(--border);
  background: var(--fg);
  color: var(--bg);
  font-size: 0.8rem;
  font-weight: 700;
  box-shadow: var(--shadow);
  animation: toastIn 0.15s ease, toastOut 0.3s ease 2.7s forwards;
  pointer-events: auto;
}

/* ─── UTILITY SPACING ─── */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }

/* ─── ANIMATIONS ─── */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes scanmove {
  0% { top: -4px; }
  100% { top: calc(100% + 4px); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.2s ease; }

/* ─── PRINT ─── */
@media print {
  .tab-bar, .site-header, .btn { display: none !important; }
}