/* ============================================================
   Client Portal — Global Styles (Dark Theme)
   ============================================================ */

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

:root {
  --bg-primary:    #0d1117;
  --bg-secondary:  #161b22;
  --bg-card:       #1c2128;
  --bg-hover:      #21262d;
  --border:        #30363d;
  --border-focus:  #4f8ef7;
  --accent:        #4f8ef7;
  --accent-hover:  #3d7ae8;
  --accent-dim:    rgba(79, 142, 247, 0.15);
  --text-primary:  #e6edf3;
  --text-secondary:#8b949e;
  --text-muted:    #484f58;
  --success:       #3fb950;
  --error:         #f85149;
  --error-dim:     rgba(248, 81, 73, 0.15);
  --sidebar-w:     240px;
  --header-h:      60px;
  --radius:        8px;
  --radius-sm:     6px;
  --shadow:        0 8px 32px rgba(0, 0, 0, 0.4);
  --transition:    0.18s ease;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition),
              opacity var(--transition);
  user-select: none;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* ---- Form inputs ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
.form-group input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
}
.form-group input:focus {
  border-color: var(--border-focus);
}
.form-group input::placeholder {
  color: var(--text-muted);
}

/* ---- Alert messages ---- */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: none;
}
.alert.show { display: block; }
.alert-error {
  background: var(--error-dim);
  border: 1px solid var(--error);
  color: var(--error);
}
.alert-success {
  background: rgba(63, 185, 80, 0.15);
  border: 1px solid var(--success);
  color: var(--success);
}

/* ---- Spinner ---- */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}