:root {
  --case-ih-red: #c8102e;
  --case-ih-red-dark: #a60d25;
  --bg-dark: #0a0a0a;
  --bg-card: #1a1a1a;
  --bg-input: #252525;
  --bg-surface: #111111;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  --border-color: #333333;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --accent-gold: #c6a24c;
  --touch-min: 48px;
  --tab-height: 60px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100dvh;
  background: #0a0a0a;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  background: radial-gradient(circle at top right, #1c1c1c 0%, var(--bg-dark) 45%);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.4;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 1.25rem; }
h2 { font-size: 1.08rem; }
h3 { font-size: 0.96rem; }

.label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
}

.muted { color: var(--text-muted); }
.hidden { display: none !important; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 14px;
}

.screen, .app-shell { min-height: 100dvh; }

/* ---- Login Screen ---- */
.screen-login {
  position: relative;
  padding: calc(16px + var(--safe-top)) 16px 24px;
  background:
    linear-gradient(135deg, rgba(200,16,46,0.12) 0%, rgba(200,16,46,0.05) 15%, transparent 35%),
    linear-gradient(315deg, rgba(200,16,46,0.08) 0%, rgba(200,16,46,0.03) 10%, transparent 30%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.015) 39px, rgba(255,255,255,0.015) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.015) 39px, rgba(255,255,255,0.015) 40px),
    repeating-linear-gradient(135deg, transparent, transparent 56px, rgba(255,255,255,0.008) 56px, rgba(255,255,255,0.008) 57px),
    var(--bg-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  gap: 20px;
}

.screen-header { text-align: center; margin-bottom: 8px; }

.login-logo {
  width: 200px;
  max-width: 70vw;
  margin-bottom: 8px;
  filter: brightness(1.1) drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}

.login-tagline {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: linear-gradient(90deg, #aaa, #ddd, #aaa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}

.screen-header h1 {
  font-size: 1.6rem;
  letter-spacing: 0.5px;
}

.subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.login-card {
  width: 100%;
  max-width: 360px;
}

.phone-input {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 18px;
  letter-spacing: 1px;
  text-align: center;
  margin-bottom: 12px;
  outline: none;
}

.phone-input:focus { border-color: var(--case-ih-red); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  padding: 12px 20px;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--case-ih-red);
  color: #fff;
  width: 100%;
}

.btn-primary:active { background: var(--case-ih-red-dark); }

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-small {
  min-height: 36px;
  padding: 6px 14px;
  font-size: 13px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--case-ih-red);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  padding: 4px;
}

.pin-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}

.pin-input {
  width: 44px;
  height: 52px;
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-input);
  color: var(--text-primary);
  outline: none;
}

.pin-input:focus { border-color: var(--case-ih-red); }

.pin-actions {
  display: flex;
  gap: 10px;
}

.pin-actions .btn { flex: 1; }

.login-spinner-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px;
  color: var(--text-muted);
}

.login-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--case-ih-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.login-footer {
  text-align: center;
  margin-top: auto;
  padding-top: 24px;
}

.login-caseih-logo {
  width: 180px;
  opacity: 0.6;
  margin-bottom: 8px;
}

.login-confidential {
  font-size: 11px;
  color: var(--text-muted);
  opacity: 0.5;
}

/* ---- App Shell ---- */
.app-shell {
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(12px + var(--safe-top)) 16px 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
}

.session-pill {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.main-content {
  flex: 1;
  padding: 12px;
  padding-bottom: calc(var(--tab-height) + var(--safe-bottom) + 16px);
}

.tab-screen { display: none; }
.tab-screen.active { display: block; }

/* ---- Tab Bar ---- */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  height: calc(var(--tab-height) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
}

.tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 11px;
  cursor: pointer;
  padding: 6px 0;
}

.tab-btn svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tab-btn.active {
  color: var(--case-ih-red);
}

/* ---- Users Tab ---- */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 150px;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
}

.search-input:focus { border-color: var(--case-ih-red); }

.filter-select {
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 13px;
  outline: none;
  min-width: 100px;
}

.loading-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px;
  color: var(--text-muted);
}

.users-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.user-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.15s;
}

.user-card:active { border-color: var(--case-ih-red); }

.user-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
}

.user-name {
  font-size: 15px;
  font-weight: 600;
}

.user-phone {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.user-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.role-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--bg-input);
  color: var(--text-secondary);
}

.role-admin { background: rgba(200,16,46,0.2); color: #ff6b6b; }
.role-manager { background: rgba(245,158,11,0.2); color: #f59e0b; }
.role-salesman { background: rgba(59,130,246,0.2); color: #60a5fa; }
.role-technician { background: rgba(34,197,94,0.2); color: #4ade80; }

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.active { background: var(--success); }
.status-dot.inactive { background: var(--danger); }

.user-card-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.user-store {
  color: var(--text-muted);
  font-weight: 500;
}

.user-apps {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.app-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  color: #fff;
  white-space: nowrap;
}

.user-login {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 11px;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 40px;
}

.fab {
  position: fixed;
  bottom: calc(var(--tab-height) + var(--safe-bottom) + 16px);
  right: 16px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--case-ih-red);
  color: #fff;
  font-size: 28px;
  font-weight: 300;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(200,16,46,0.4);
  z-index: 50;
}

.fab:active { background: var(--case-ih-red-dark); }

/* ---- Stores Tab ---- */
.stores-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}

.store-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s;
}

.store-card:active { border-color: var(--case-ih-red); }

.store-card h3 {
  font-size: 14px;
  margin-bottom: 8px;
}

.store-user-count {
  font-size: 2rem;
  font-weight: 700;
  color: var(--case-ih-red);
  line-height: 1;
}

/* ---- System Tab ---- */
.section-title {
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.system-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px;
}

.system-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.system-url {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  word-break: break-all;
}

.system-url:hover { color: var(--case-ih-red); }

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal-sheet {
  background: var(--bg-surface);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  width: 100%;
  max-width: 500px;
  max-height: 90dvh;
  overflow-y: auto;
  padding-bottom: calc(16px + var(--safe-bottom));
}

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

.modal-body { padding: 16px 20px; }

.form-group { margin-bottom: 16px; }

.form-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  margin-bottom: 16px;
}

.flex-1 { flex: 1; }

.text-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
}

.text-input:focus { border-color: var(--case-ih-red); }

select.text-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
}

.checkbox-grid input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--case-ih-red);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toggle-btn {
  position: relative;
  width: 52px;
  height: 30px;
  border-radius: 15px;
  border: none;
  background: var(--border-color);
  cursor: pointer;
  transition: background 0.2s;
}

.toggle-btn.active { background: var(--success); }

.toggle-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s;
}

.toggle-btn.active .toggle-knob { transform: translateX(22px); }

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.modal-actions .btn { flex: 1; }

/* ---- Toast ---- */
#toast-root {
  position: fixed;
  top: calc(12px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s, transform 0.3s;
  white-space: nowrap;
}

.toast.show { opacity: 1; transform: translateY(0); }
.toast-error { border-color: var(--danger); color: var(--danger); }

/* ---- Responsive ---- */
@media (min-width: 768px) {
  .filter-bar { flex-wrap: nowrap; }
  .users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
  .stores-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
  .system-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
  .modal-overlay {
    align-items: center;
  }
  .modal-sheet {
    border-radius: 20px;
    max-height: 80dvh;
  }
}