/* ===== VARIABLES ===== */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #e0e7ff;
  --secondary: #64748b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
}

/* ===== RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ===== LOGIN ===== */
#loginScreen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo-icon {
  font-size: 48px;
  margin-bottom: 8px;
}

.logo h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.tagline {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 6px;
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-light);
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 500;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group label small {
  font-weight: normal;
  color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background: white;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ===== BUTTONS ===== */
.btn {
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

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

.btn-secondary:hover {
  background: var(--bg);
  border-color: var(--text-muted);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-block {
  width: 100%;
  padding: 12px;
}

.error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  min-height: 18px;
}

/* ===== APP LAYOUT ===== */
#appScreen {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: white;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.sidebar-header {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.logo-icon-small {
  font-size: 24px;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.3px;
}

.nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  margin-bottom: 2px;
  transition: all 0.15s;
}

.nav-item:hover {
  background: var(--bg);
  color: var(--text);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.nav-icon {
  font-size: 16px;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-logout {
  width: 100%;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  transition: all 0.15s;
}

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

/* ===== MAIN CONTENT ===== */
.main-content {
  flex: 1;
  margin-left: 240px;
  padding: 32px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.view-header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.view-subtitle {
  color: var(--text-muted);
  margin-top: 4px;
  font-size: 14px;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
}

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

.card-body {
  padding: 24px;
}

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-label {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 40px 20px;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 14px;
}

.empty-hint {
  font-size: 13px !important;
  color: var(--text-light) !important;
  margin-top: 4px;
}

.loading {
  text-align: center;
  padding: 30px;
  color: var(--text-muted);
}

/* ===== TABLE ===== */
.user-table {
  width: 100%;
  border-collapse: collapse;
}

.user-table th,
.user-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.user-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.user-table tr:hover {
  background: var(--bg);
}

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-agency {
  background: #fef3c7;
  color: #92400e;
}

.badge-client {
  background: #e0e7ff;
  color: #3730a3;
}

.badge-active {
  background: #d1fae5;
  color: #065f46;
}

.badge-inactive {
  background: #fee2e2;
  color: #991b1b;
}

/* ===== API KEY ===== */
.api-key-display {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.api-key-display code {
  flex: 1;
  min-width: 250px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 13px;
  color: var(--primary-dark);
  word-break: break-all;
}

.hint {
  font-size: 13px;
  color: var(--text-muted);
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

.hint code {
  background: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  border: 1px solid var(--border);
}

/* ===== ENDPOINTS ===== */
.endpoint-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.endpoint {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  flex-wrap: wrap;
}

.method {
  padding: 3px 10px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.method.get { background: #dbeafe; color: #1e40af; }
.method.post { background: #d1fae5; color: #065f46; }
.method.patch { background: #fef3c7; color: #92400e; }

.endpoint code {
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 500;
}

.endpoint-desc {
  color: var(--text-muted);
  font-size: 12px;
  margin-left: auto;
}

/* ===== MODAL ===== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-content {
  background: white;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
  padding: 0 8px;
}

.modal-close:hover {
  color: var(--text);
}

.modal form {
  padding: 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    position: relative;
    height: auto;
  }
  .main-content {
    margin-left: 0;
    padding: 16px;
  }
  #appScreen {
    flex-direction: column;
  }
}