/* ═══════ SHARED STYLES — Hostu ═══════ */

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

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f4f4f5;
  --gray-200: #e4e4e7;
  --gray-300: #d4d4d8;
  --gray-400: #a1a1aa;
  --gray-500: #71717a;
  --gray-600: #52525b;
  --gray-700: #3f3f46;
  --gray-800: #27272a;
  --gray-900: #18181b;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --accent: #10b981;
  --accent-light: #d1fae5;
  --accent-dark: #065f46;
  --danger: #ef4444;
  --amber-100: #fef3c7;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --amber-700: #b45309;
  --blue-100: #dbeafe;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  letter-spacing: -0.03em;
}

/* ───── NAV BASE ───── */
nav {
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Dark fixed nav (create-listing, onboarding) */
.nav-fixed-dark {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--gray-900);
  border-bottom: 1px solid var(--gray-700);
}

.nav-fixed-dark .nav-brand { color: var(--white); }
.nav-fixed-dark .nav-links a { color: var(--gray-400); }
.nav-fixed-dark .nav-links a:hover { color: var(--white); }

/* Light fixed nav with glass effect (listing, guest, host) */
.nav-fixed-light {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}

.nav-fixed-light .nav-links a { color: var(--gray-600); }
.nav-fixed-light .nav-links a:hover { color: var(--black); }

/* ───── NAV BRAND ───── */
.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--black);
  text-decoration: none;
}

.nav-brand .nav-logo {
  height: 1.5rem;
  width: auto;
}

.nav-brand .beta-tag {
  font-size: 0.55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--accent);
  color: var(--white);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  margin-left: 0.25rem;
}

/* ───── NAV LINKS ───── */
.nav-links { display: flex; align-items: center; gap: 1.5rem; }

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

/* ───── NAV USER (auth pages) ───── */
.nav-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--gray-300);
}

.nav-user .user-email {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
}

.btn-signout {
  background: transparent;
  border: 1px solid var(--gray-600);
  color: var(--gray-400);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.375rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-signout:hover {
  border-color: var(--gray-400);
  color: var(--white);
}

/* ───── BUTTONS ───── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--gray-800);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

.btn-accent:hover {
  background: var(--green-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--black);
  border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
  border-color: var(--black);
  background: var(--gray-50);
}

.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border: 1.5px solid var(--gray-200);
  font-size: 0.75rem;
  padding: 0.375rem 0.625rem;
}

.btn-danger-outline:hover {
  border-color: var(--danger);
  background: #fef2f2;
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  border-radius: 10px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ───── FORM FIELDS ───── */
.field-group {
  margin-bottom: 1.25rem;
}

.field-group:last-child {
  margin-bottom: 0;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.field-row-4 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 1rem;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.375rem;
  letter-spacing: 0.01em;
}

label .required {
  color: var(--danger);
  margin-left: 0.125rem;
}

label .optional {
  color: var(--gray-400);
  font-weight: 400;
  font-size: 0.75rem;
}

input[type="text"],
input[type="number"],
input[type="url"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0.625rem 0.875rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--white);
  color: var(--gray-900);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: var(--gray-400);
}

textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.6;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a1a1aa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
  cursor: pointer;
}

.field-hint {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.currency-input {
  position: relative;
}

.currency-input .prefix {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-400);
  pointer-events: none;
}

.currency-input input {
  padding-left: 2.25rem;
  font-family: var(--font-mono);
}

/* ───── FORM SECTIONS ───── */
.form-section {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.form-section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gray-100);
}

.form-section-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  background: var(--accent-light);
  flex-shrink: 0;
}

.form-section-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--black);
}

.form-section-header p {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-top: 0.125rem;
}

/* ───── CHECKBOX GRID ───── */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.5rem;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.checkbox-item:hover {
  border-color: var(--gray-300);
  background: var(--gray-50);
}

.checkbox-item.checked {
  border-color: var(--accent);
  background: var(--accent-light);
}

.checkbox-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-item span {
  font-size: 0.85rem;
  color: var(--gray-700);
}

.checkbox-item.checked span {
  color: var(--accent-dark);
  font-weight: 500;
}

.custom-amenity-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.custom-amenity-row input {
  flex: 1;
}

/* ───── STATUS MESSAGES ───── */
.status-message {
  padding: 1rem 1.25rem;
  border-radius: 10px;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  display: none;
}

.status-message.error {
  background: #fef2f2;
  border: 1.5px solid #fecaca;
  color: var(--red-600);
  display: block;
}

.status-message.success {
  background: var(--accent-light);
  border: 1.5px solid var(--accent);
  color: var(--accent-dark);
  display: block;
}

.status-message.warning {
  background: var(--amber-100);
  border: 1.5px solid var(--amber-500);
  color: var(--amber-700);
  display: block;
}

.status-message a {
  color: inherit;
  font-weight: 700;
}

/* ───── LOADING ───── */
.loading-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.loading-overlay.active {
  display: flex;
}

.loading-card {
  background: var(--white);
  border-radius: 16px;
  padding: 2.5rem 3rem;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0,0,0,0.15);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

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

.loading-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  font-weight: 500;
}

.auth-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  flex-direction: column;
  gap: 1rem;
}

.auth-loading p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

/* ───── ANIMATIONS ───── */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ───── PAGE CONTAINER ───── */
.page-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 96px 2rem 4rem;
}

/* ───── FOOTER ───── */
footer {
  border-top: 1px solid var(--gray-200);
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer p {
  font-size: 0.8rem;
  color: var(--gray-400);
}

footer .links {
  display: flex;
  gap: 1.5rem;
}

footer .links a {
  font-size: 0.8rem;
  color: var(--gray-400);
  text-decoration: none;
}

footer .links a:hover { color: var(--black); }

/* ───── BENTO CARDS ───── */
.bento-card {
  background: #f8fafc;
  border: none;
  border-radius: 24px;
  padding: 2.5rem;
  transition: all 0.3s;
}

.bento-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.04);
}

/* ───── RESPONSIVE ───── */
@media (max-width: 768px) {
  nav { padding: 0 1rem; }
  .nav-links a:not(.btn):not(.btn-signout):not(.user-email) { display: none; }
  .page-container { padding: 80px 1rem 2rem; }
  .form-section { padding: 1.5rem; }
  .field-row,
  .field-row-3,
  .field-row-4 { grid-template-columns: 1fr; }
  .checkbox-grid { grid-template-columns: 1fr 1fr; }
  .btn-lg { padding: 0.75rem 1.5rem; font-size: 0.9rem; }
  .loading-card { padding: 2rem; }
  footer { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (max-width: 480px) {
  .checkbox-grid { grid-template-columns: 1fr; }
  .form-section { padding: 1.25rem; }
  .btn { font-size: 0.8rem; padding: 0.5rem 1rem; }
  .btn-lg { padding: 0.625rem 1.25rem; font-size: 0.85rem; }
}