/* ============================================================
   Market54 PWA - Base Styles
   Shared styles used across all screens
   ============================================================ */

/* --- Reset & Box Model --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* --- App Header --- */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-primary-dark);
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 var(--space-md);
  gap: var(--space-md);
}

.header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-inverse);
  letter-spacing: 0.5px;
}

.header-title {
  flex: 1;
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-inverse);
  text-align: center;
}

.header-actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* --- Main Content --- */
.app-main {
  flex: 1;
  margin-top: var(--header-height);
  margin-bottom: var(--bottom-nav-height);
  padding: var(--space-lg) var(--space-md);
  overflow-y: auto;
}

/* Login screen has no bottom nav, so no bottom margin */
.app-main.no-bottom-nav {
  margin-bottom: 0;
}

/* --- Bottom Navigation --- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-nav-height);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 100;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.08);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: var(--space-xs) var(--space-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: color 0.2s ease;
  flex: 1;
}

.nav-item svg {
  width: 22px;
  height: 22px;
}

.nav-item:hover,
.nav-item.active {
  color: var(--color-primary);
}

/* --- Form Elements --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.3px;
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-md);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 140, 0.15);
}

.form-input::placeholder {
  color: var(--color-border);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  height: 50px;
  padding: 0 var(--space-lg);
  font-family: var(--font-display);
  font-size: var(--font-size-base);
  font-weight: 700;
  letter-spacing: 0.5px;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: rgba(0, 122, 140, 0.08);
}

/* --- Cards --- */
.card {
  background-color: var(--color-surface);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

/* --- Alerts --- */
.alert {
  padding: var(--space-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  display: none;
}

.alert.show {
  display: block;
}

.alert-error {
  background-color: #FDEDEC;
  color: var(--color-error);
  border: 1px solid #F5B7B1;
}

.alert-success {
  background-color: #EAFAF1;
  color: var(--color-success);
  border: 1px solid #A9DFBF;
}

/* --- Loading Spinner --- */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}

.spinner.show {
  display: inline-block;
}

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

/* --- Link styles --- */
a {
  color: var(--color-text-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-sm     { font-size: var(--font-size-sm); }
.text-muted  { color: var(--color-text-secondary); }
.mt-sm       { margin-top: var(--space-sm); }
.mt-md       { margin-top: var(--space-md); }
.mt-lg       { margin-top: var(--space-lg); }