@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-hover: #1a1a1a;
  --surface-elevated: #1e1e1e;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --text: #fafafa;
  --text-secondary: #a0a0a0;
  --text-muted: #5a5a5a;
  --accent: #f97316;
  --accent-glow: rgba(249,115,22,0.15);
  --red: #ef4444;
  --green: #22c55e;
  --blue: #3b82f6;
  --purple: #a855f7;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --glass: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.06);
}

html { font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ═══ SCROLLBAR ═══ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }

/* ═══ LOGIN ═══ */
#login-view {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at 50% 0%, rgba(249,115,22,0.08) 0%, transparent 60%);
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  width: 100%; max-width: 400px;
  text-align: center;
  animation: fadeUp 0.5s ease-out;
}
.login-card .logo { font-size: 48px; margin-bottom: 8px; }
.login-card h1 {
  font-size: 1.5rem; font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--red));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}
.login-card .subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 32px; }
.login-card input {
  width: 100%; padding: 14px 16px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 0.9375rem; font-family: inherit;
  outline: none; transition: border var(--transition);
  margin-bottom: 16px;
}
.login-card input:focus { border-color: var(--accent); }
.login-error {
  color: var(--red); font-size: 0.8125rem;
  margin-bottom: 12px; display: none;
}

/* ═══ BUTTONS ═══ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border: none; border-radius: var(--radius-sm);
  font-family: inherit; font-size: 0.875rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ea580c);
  color: white; box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 30px rgba(249,115,22,0.3); }
.btn-secondary {
  background: var(--surface-elevated); color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-hover); background: var(--surface-hover); }
.btn-danger { background: rgba(239,68,68,0.1); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }
.btn-danger:hover { background: rgba(239,68,68,0.2); }
.btn-sm { padding: 8px 14px; font-size: 0.8125rem; border-radius: var(--radius-xs); }
.btn-icon {
  width: 36px; height: 36px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-xs); background: var(--surface-elevated);
  border: 1px solid var(--border); color: var(--text-secondary);
  cursor: pointer; transition: all var(--transition);
}
.btn-icon:hover { color: var(--text); border-color: var(--border-hover); }
.btn-full { width: 100%; justify-content: center; }

/* ═══ LAYOUT ═══ */
#dashboard-view { display: none; }
.navbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 32px;
  background: rgba(10,10,10,0.8); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.navbar-brand {
  display: flex; align-items: center; gap: 12px;
  font-size: 1.125rem; font-weight: 700;
}
.navbar-brand span {
  background: linear-gradient(135deg, var(--accent), var(--red));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.container { max-width: 1200px; margin: 0 auto; padding: 32px; }

/* ═══ GLOBAL STATS BAR ═══ */
.global-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin-bottom: 32px;
}
.global-stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  transition: border-color var(--transition);
}
.global-stat:hover { border-color: var(--border-hover); }
.global-stat .label {
  font-size: 0.75rem; font-weight: 500;
  color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.5px; margin-bottom: 8px;
}
.global-stat .value {
  font-size: 1.75rem; font-weight: 700;
}
.global-stat .value.accent { color: var(--accent); }
.global-stat .value.green { color: var(--green); }
.global-stat .value.blue { color: var(--blue); }

/* ═══ SECTION HEADER ═══ */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.section-header h2 { font-size: 1.25rem; font-weight: 700; }

/* ═══ CAMPAIGN GRID ═══ */
.campaigns-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.campaign-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  cursor: pointer; transition: all var(--transition);
  position: relative; overflow: hidden;
}
.campaign-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: linear-gradient(90deg, var(--accent), var(--red));
  opacity: 0; transition: opacity var(--transition);
}
.campaign-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.campaign-card:hover::before { opacity: 1; }
.campaign-card-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 16px;
}
.campaign-card-header h3 { font-size: 1rem; font-weight: 600; }
.campaign-location {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.75rem; color: var(--text-secondary);
  background: var(--bg); padding: 4px 10px;
  border-radius: 100px; margin-top: 6px;
}
.campaign-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin-bottom: 16px;
}
.campaign-stat .num { font-size: 1.25rem; font-weight: 700; }
.campaign-stat .lbl { font-size: 0.6875rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.campaign-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; border-top: 1px solid var(--border);
}
.campaign-date { font-size: 0.75rem; color: var(--text-muted); }
.campaign-actions { display: flex; gap: 6px; }
.campaign-qr-thumb {
  width: 48px; height: 48px; border-radius: var(--radius-xs);
  background: white; padding: 4px; flex-shrink: 0;
}
.campaign-qr-thumb img { width: 100%; height: 100%; object-fit: contain; }

/* ═══ EMPTY STATE ═══ */
.empty-state {
  text-align: center; padding: 80px 32px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 48px; margin-bottom: 16px; }
.empty-state p { margin-bottom: 24px; }

/* ═══ CAMPAIGN DETAIL ═══ */
#campaign-detail-view { display: none; }
.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.875rem; color: var(--text-secondary);
  text-decoration: none; cursor: pointer;
  margin-bottom: 24px; transition: color var(--transition);
}
.back-link:hover { color: var(--text); }
.detail-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 32px; flex-wrap: wrap; gap: 16px;
}
.detail-title h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 4px; }
.detail-title .location-badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.8125rem; color: var(--text-secondary);
}
.detail-url {
  font-size: 0.8125rem; color: var(--accent);
  word-break: break-all; margin-top: 8px;
}
.detail-actions { display: flex; gap: 8px; flex-shrink: 0; }
.detail-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-bottom: 32px;
}
.detail-stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.detail-stat .label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.detail-stat .value { font-size: 2rem; font-weight: 700; }

/* Charts grid */
.charts-grid {
  display: grid; grid-template-columns: 2fr 1fr; gap: 20px;
  margin-bottom: 32px;
}
.chart-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.chart-card h3 {
  font-size: 0.875rem; font-weight: 600; margin-bottom: 20px;
  color: var(--text-secondary);
}
.chart-card canvas { width: 100% !important; }

/* Breakdown lists */
.breakdown-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  margin-bottom: 32px;
}
.breakdown-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.breakdown-card h3 {
  font-size: 0.875rem; font-weight: 600; margin-bottom: 16px;
  color: var(--text-secondary);
}
.breakdown-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 0; border-bottom: 1px solid var(--border);
}
.breakdown-item:last-child { border-bottom: none; }
.breakdown-item .name { font-size: 0.8125rem; }
.breakdown-item .count {
  font-size: 0.8125rem; font-weight: 600;
  color: var(--accent);
}

/* Scan log table */
.scan-log {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.scan-log h3 {
  font-size: 0.875rem; font-weight: 600; margin-bottom: 16px;
  color: var(--text-secondary);
}
.scan-log table { width: 100%; border-collapse: collapse; }
.scan-log th, .scan-log td {
  text-align: left; padding: 10px 12px;
  font-size: 0.8125rem; border-bottom: 1px solid var(--border);
}
.scan-log th { color: var(--text-muted); font-weight: 500; text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.5px; }
.scan-log tr:last-child td { border-bottom: none; }
.scan-log .device-badge {
  display: inline-block; padding: 2px 8px;
  border-radius: 100px; font-size: 0.6875rem; font-weight: 500;
  background: var(--accent-glow); color: var(--accent);
}

/* ═══ MODAL ═══ */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(4px);
  z-index: 1000; align-items: center; justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); width: 100%; max-width: 520px;
  padding: 32px; animation: fadeUp 0.3s ease-out;
}
.modal h2 { font-size: 1.25rem; font-weight: 700; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 0.8125rem; font-weight: 500;
  color: var(--text-secondary); margin-bottom: 6px;
}
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 14px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 0.875rem; font-family: inherit; outline: none;
  transition: border var(--transition);
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 60px; }
.form-group .hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }
.modal-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 28px; }

/* ═══ TOAST ═══ */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 14px 20px; border-radius: var(--radius-sm);
  background: var(--surface-elevated); border: 1px solid var(--border);
  font-size: 0.875rem; color: var(--text);
  animation: slideIn 0.3s ease-out;
  max-width: 360px;
}
.toast.success { border-color: rgba(34,197,94,0.3); }
.toast.error { border-color: rgba(239,68,68,0.3); }

/* ═══ QR PREVIEW ═══ */
.qr-preview-section {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  margin-bottom: 32px;
}
.qr-preview-section img {
  max-width: 240px; border-radius: var(--radius-sm);
}
.qr-url-display {
  font-size: 0.8125rem; color: var(--text-secondary);
  background: var(--bg); padding: 8px 16px;
  border-radius: var(--radius-xs); word-break: break-all;
  text-align: center; width: 100%;
  cursor: pointer; transition: color var(--transition);
}
.qr-url-display:hover { color: var(--accent); }

/* ═══ ANIMATIONS ═══ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
  .container { padding: 20px 16px; }
  .navbar { padding: 14px 16px; }
  .global-stats { grid-template-columns: repeat(2, 1fr); }
  .campaigns-grid { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
  .breakdown-grid { grid-template-columns: 1fr; }
  .detail-stats { grid-template-columns: 1fr; }
  .detail-header { flex-direction: column; }
  .modal { padding: 24px; }
}