/* ============================================================
   style.css — VendMatrix Dashboard
   Theme: Industrial Utilitarian — dark steel, amber accents,
   monospace data, clean grid structure
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@300;400;500;600;700&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-base:       #0d0f12;
  --bg-surface:    #141720;
  --bg-raised:     #1c2030;
  --bg-hover:      #242840;
  --border:        #2a2f45;
  --border-light:  #353c58;

  --amber:         #f5a623;
  --amber-dim:     #c47f10;
  --amber-glow:    rgba(245,166,35,0.12);
  --green:         #22c55e;
  --green-dim:     rgba(34,197,94,0.15);
  --red:           #ef4444;
  --red-dim:       rgba(239,68,68,0.15);
  --blue:          #3b82f6;
  --blue-dim:      rgba(59,130,246,0.15);

  --text-primary:  #e8ecf4;
  --text-secondary:#8891aa;
  --text-muted:    #4e566e;
  --text-amber:    #f5a623;

  --font-sans: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 12px;

  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--amber); text-decoration: none; }
a:hover { color: var(--text-primary); }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Layout ─────────────────────────────────────────────────── */
.app-shell {
  display: grid;
  grid-template-rows: 64px 1fr;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}
.app-shell .header   { grid-column: 1 / -1; grid-row: 1; }
.app-shell .sidebar  { grid-column: 1; grid-row: 2; }
.app-shell .main     { grid-column: 2; grid-row: 2; overflow-y: auto; }

/* ── Header ─────────────────────────────────────────────────── */
.header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}
.header-logo img {
  height: 36px;
  width: auto;
}
.header-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--amber);
}
.header-logo-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1;
}
.header-spacer { flex: 1; }
.header-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}
.profile-info { text-align: right; }
.profile-info .email { font-size: 0.8rem; color: var(--text-secondary); }
.profile-info .role  {
  font-size: 0.65rem;
  color: var(--amber);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--amber-glow);
  border: 2px solid var(--amber);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--amber);
}
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  padding: 4px 8px;
}

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  overflow-y: auto;
}
.sidebar-nav { list-style: none; }
.sidebar-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 16px 20px 6px;
  font-weight: 600;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}
.sidebar-nav a:hover { color: var(--text-primary); background: var(--bg-hover); }
.sidebar-nav a.active {
  color: var(--amber);
  background: var(--amber-glow);
  border-left-color: var(--amber);
}
.nav-icon { font-size: 1rem; width: 20px; text-align: center; }

/* ── Main content ─────────────────────────────────────────────── */
.main {
  padding: 32px;
  background: var(--bg-base);
}
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.page-subtitle {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ── Stat cards ─────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--amber);
}
.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 8px;
}
.stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1;
}
.stat-value.online  { color: var(--green); }
.stat-value.offline { color: var(--red); }
.stat-sub { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

/* ── Toolbar (filters + search) ──────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar-spacer { flex: 1; }
.search-box {
  position: relative;
}
.search-box input {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 12px 8px 36px;
  font-size: 0.85rem;
  width: 240px;
  transition: border-color 0.15s;
}
.search-box input:focus { outline: none; border-color: var(--amber); }
.search-box .search-icon {
  position: absolute;
  left: 10px; top: 50%; transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.9rem;
}
.filter-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.pill {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.02em;
}
.pill:hover   { border-color: var(--amber); color: var(--amber); }
.pill.active  {
  background: var(--amber-glow);
  border-color: var(--amber);
  color: var(--amber);
}

/* ── Table ──────────────────────────────────────────────────── */
.table-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table-scroll { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
thead th {
  background: var(--bg-raised);
  color: var(--text-muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
  user-select: none;
}
thead th[data-sort]:hover { color: var(--amber); }
thead th.sort-asc::after  { content: ' ↑'; color: var(--amber); }
thead th.sort-desc::after { content: ' ↓'; color: var(--amber); }
tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg-hover); }
tbody td {
  padding: 12px 16px;
  color: var(--text-primary);
  vertical-align: middle;
  white-space: nowrap;
}
tbody tr.clickable { cursor: pointer; }
.mono { font-family: var(--font-mono); font-size: 0.82rem; }
.empty-row td {
  text-align: center;
  color: var(--text-muted);
  padding: 48px;
  font-style: italic;
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.badge-online  { background: var(--green-dim);  color: var(--green); }
.badge-offline { background: var(--red-dim);    color: var(--red); }
.badge-otp     { background: rgba(59,130,246,.15); color: var(--blue); }
.badge-upi     { background: rgba(168,85,247,.15); color: #a855f7; }
.badge-rfid    { background: rgba(20,184,166,.15); color: #14b8a6; }
.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.badge-offline .dot { animation: none; }

/* ── Type badge ─────────────────────────────────────────────── */
.type-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.05em;
}
.type-OTP  { background: rgba(59,130,246,.15); color: var(--blue); }
.type-UPI  { background: rgba(168,85,247,.15); color: #a855f7; }
.type-RFID { background: rgba(20,184,166,.15); color: #14b8a6; }

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.page-btn {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.15s;
}
.page-btn:hover  { border-color: var(--amber); color: var(--amber); }
.page-btn.active {
  background: var(--amber-glow);
  border-color: var(--amber);
  color: var(--amber);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.83rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--amber);
  color: #0d0f12;
  border-color: var(--amber);
}
.btn-primary:hover { background: #d4901e; border-color: #d4901e; }
.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text-secondary);
}
.btn-secondary:hover { border-color: var(--amber); color: var(--amber); }
.btn-danger {
  background: var(--red-dim);
  border-color: var(--red);
  color: var(--red);
}
.btn-danger:hover { background: var(--red); color: white; }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }
.btn-icon { padding: 7px; }

/* ── Cards / panels ─────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Forms ───────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 9px 12px;
  font-size: 0.87rem;
  transition: border-color 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--amber);
  background: var(--bg-hover);
}
.form-group select option { background: var(--bg-raised); }
.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  flex-wrap: wrap;
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: slideUp 0.2s ease;
}
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.modal-title { font-size: 1.05rem; font-weight: 700; }
.modal-close {
  background: none; border: none;
  color: var(--text-muted); font-size: 1.4rem;
  line-height: 1;
  transition: color 0.15s;
}
.modal-close:hover { color: var(--text-primary); }

/* ── Login page ─────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.login-page::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(245,166,35,0.06) 0%, transparent 70%);
  top: -200px; right: -200px;
  pointer-events: none;
}
.login-page::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(59,130,246,0.04) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  pointer-events: none;
}
.login-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 1;
}
.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}
.login-logo img { height: 44px; width: auto; }
.login-logo-text { font-size: 1.4rem; font-weight: 700; color: var(--amber); }
.login-tagline {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.login-box h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-secondary);
}
.login-error {
  background: var(--red-dim);
  border: 1px solid var(--red);
  color: var(--red);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.83rem;
  margin-bottom: 16px;
  display: none;
}
.login-error.show { display: block; }
.login-btn {
  width: 100%;
  padding: 11px;
  background: var(--amber);
  border: none;
  border-radius: var(--radius-sm);
  color: #0d0f12;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-top: 8px;
  transition: background 0.15s;
}
.login-btn:hover { background: #d4901e; }
.login-btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* ── Toast ───────────────────────────────────────────────────── */
#toastContainer {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 18px;
  font-size: 0.85rem;
  color: var(--text-primary);
  max-width: 320px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s;
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast.toast-success { border-color: var(--green); }
.toast.toast-error   { border-color: var(--red); }
.toast.toast-info    { border-color: var(--amber); }

/* ── Loader / spinner ─────────────────────────────────────────── */
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 48px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-row td {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

/* ── Device detail page ──────────────────────────────────────── */
.device-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.back-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}
.back-btn:hover { border-color: var(--amber); color: var(--amber); }

.device-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.meta-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.meta-item .label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}
.meta-item .value {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* ── Date range bar ───────────────────────────────────────────── */
.date-range-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.date-range-bar label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.date-range-bar input[type="date"] {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 6px 10px;
  font-size: 0.82rem;
}
.date-range-bar input[type="date"]:focus {
  outline: none; border-color: var(--amber);
}

/* ── Users list page ──────────────────────────────────────────── */
.user-avatar-sm {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 700; color: var(--amber);
}

/* ── Checkbox list in modals ──────────────────────────────────── */
.checkbox-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  background: var(--bg-raised);
}
.checkbox-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.83rem;
  color: var(--text-secondary);
  transition: background 0.1s;
}
.checkbox-list label:hover { background: var(--bg-hover); color: var(--text-primary); }
.checkbox-list input[type="checkbox"] { accent-color: var(--amber); }

/* ── Admin control panel ──────────────────────────────────────── */
.control-panel {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

/* ── Divider ──────────────────────────────────────────────────── */
.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 64px 1fr;
  }
  .app-shell .sidebar {
    grid-column: 1;
    grid-row: 2;
    position: fixed;
    left: -260px;
    top: 64px;
    bottom: 0;
    width: 240px;
    z-index: 150;
    transition: left 0.25s ease;
    box-shadow: var(--shadow);
  }
  .app-shell .sidebar.open { left: 0; }
  .app-shell .main { grid-column: 1; grid-row: 2; }
  .hamburger { display: flex; }
  .main { padding: 16px; }
}
@media (max-width: 600px) {
  .login-box { padding: 28px 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid  { grid-template-columns: 1fr; }
  .toolbar    { flex-direction: column; align-items: stretch; }
  .search-box input { width: 100%; }
  .page-header { flex-direction: column; }
  .device-meta-grid { grid-template-columns: repeat(2, 1fr); }
  .modal { padding: 20px 16px; }
}
@media (max-width: 400px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* ── Sidebar overlay on mobile ─────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 140;
  top: 64px;
}
.sidebar-overlay.show { display: block; }

/* ── Scrollbar ──────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }