/*
 * components.css
 * Jios2 — Reusable UI Components
 * Requires: design-system.css
 */

/* Alpine.js x-cloak - hides elements before Alpine loads */
[x-cloak] { display: none !important; }

/* ═══════════════════════════════════════════════
   NAVIGATION — Desktop Top Bar
═══════════════════════════════════════════════ */

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(var(--bg-surface-rgb, 255,255,255), .88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--brd-default);
  z-index: var(--z-sticky);
  transition: background var(--tr-normal), border-color var(--tr-normal), box-shadow var(--tr-normal);
}

[data-theme="dark"] .navbar {
  background: hsla(230, 22%, 9%, .90);
  border-color: var(--brd-default);
}

.navbar:has(+ main) { box-shadow: none; }
.navbar.scrolled { box-shadow: var(--shadow-sm); }

.navbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo-icon {
  width: 38px; height: 38px;
  border-radius: var(--r-md);
  background: var(--clr-gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  transition: transform var(--tr-fast), box-shadow var(--tr-fast);
}

.navbar__logo:hover .navbar__logo-icon {
  transform: scale(1.08);
  box-shadow: 0 4px 16px hsla(225,70%,55%,.4);
}

.navbar__logo-name {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Desktop nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.navbar__link {
  position: relative;
  padding: var(--sp-2) var(--sp-3);
  color: var(--txt-secondary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  border-radius: var(--r-sm);
  transition: color var(--tr-fast), background var(--tr-fast);
  text-decoration: none;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%;
  width: 0; height: 2px;
  background: var(--clr-gradient);
  border-radius: var(--r-full);
  transform: translateX(-50%);
  transition: width var(--tr-normal);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

.navbar__link.active::after,
.navbar__link:hover::after { width: 60%; }

/* Navbar actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

/* Settings dropdown trigger */
.settings-trigger {
  width: 36px; height: 36px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--txt-secondary);
  transition: color var(--tr-fast), background var(--tr-fast);
}

.settings-trigger:hover {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

.settings-trigger svg { width: 20px; height: 20px; }

/* Settings dropdown */
.settings-dropdown {
  position: absolute;
  top: calc(var(--nav-height) + 8px);
  right: var(--sp-6);
  width: 260px;
  background: var(--bg-surface);
  border: 1px solid var(--brd-default);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  overflow: hidden;
  transform-origin: top right;
  transition: opacity var(--tr-fast), transform var(--tr-fast);
}

.settings-dropdown[x-cloak] {
  display: none !important;
}

.settings-section {
  padding: var(--sp-4);
  border-bottom: 1px solid var(--brd-default);
}

.settings-section:last-child { border-bottom: none; }

.settings-section__title {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--txt-muted);
  margin-bottom: var(--sp-3);
}

/* Theme buttons */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-2);
}

.theme-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-2);
  border-radius: var(--r-md);
  background: var(--bg-elevated);
  color: var(--txt-secondary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  transition: all var(--tr-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

.theme-btn:hover { background: var(--bg-overlay); }
.theme-btn.active {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

/* Language buttons */
.lang-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-md);
  color: var(--txt-primary);
  font-size: var(--fs-sm);
  transition: background var(--tr-fast);
  cursor: pointer;
}

.lang-btn:hover { background: var(--bg-elevated); }
.lang-btn.active { color: var(--clr-primary); font-weight: var(--fw-semibold); }

/* ═══════════════════════════════════════════════
   NAVIGATION — Mobile Bottom Tab Bar
═══════════════════════════════════════════════ */

.mobile-nav {
  display: none;
  position: fixed !important;
  bottom: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  height: var(--mobile-nav-h) !important;
  background: var(--bg-surface) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 9999 !important;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  transform: translateZ(0) !important;
  will-change: transform;
  margin: 0 !important;
  border: none !important;
  outline: none !important;
}

/* 移动端强制显示底部导航 */
@media (max-width: 767px) {
  .mobile-nav { 
    display: flex !important; 
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    z-index: 9999 !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  .navbar { display: none !important; }
}

.mobile-nav__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.mobile-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: var(--sp-2) 0;
  color: var(--txt-muted);
  font-size: 10px;
  font-weight: var(--fw-medium);
  text-decoration: none;
  transition: color var(--tr-fast);
  position: relative;
}

.mobile-nav__item svg { width: 22px; height: 22px; transition: transform var(--tr-fast); }

.mobile-nav__item:hover,
.mobile-nav__item.active {
  color: var(--clr-primary);
}

.mobile-nav__item.active svg {
  transform: scale(1.1);
}

.mobile-nav__item.active::before {
  content: '';
  position: absolute;
  top: 0; left: 25%; right: 25%;
  height: 2px;
  background: var(--clr-gradient);
  border-radius: 0 0 var(--r-full) var(--r-full);
}

/* Mobile top bar (settings icon on top-right for mobile) */
.mobile-topbar {
  display: none;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  height: 52px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--brd-default);
  z-index: 9999 !important;
  padding-inline: var(--sp-4);
  align-items: center;
  justify-content: space-between;
  transform: translateZ(0) !important;
  will-change: transform;
}

/* 移动端强制显示顶部导航 */
@media (max-width: 767px) {
  .mobile-topbar { 
    display: flex !important; 
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    z-index: 9999 !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  .navbar { display: none !important; }
  .page-wrapper { 
    padding-top: 52px; 
    padding-bottom: var(--mobile-nav-h);
  }
}

/* ═══════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 10px var(--sp-5);
  border-radius: var(--r-lg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--tr-normal);
  text-decoration: none;
  user-select: none;
}

.btn:active { transform: scale(.96); }

.btn-sm { padding: 7px var(--sp-3); font-size: var(--fs-xs); border-radius: var(--r-md); }
.btn-lg { padding: 14px var(--sp-8); font-size: var(--fs-base); border-radius: var(--r-xl); }

/* Primary */
.btn-primary {
  background: var(--clr-gradient);
  color: var(--txt-inverse);
  border-color: transparent;
  box-shadow: 0 4px 16px hsla(225,70%,55%,.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px hsla(225,70%,55%,.45);
  opacity: 1;
  color: var(--txt-inverse);
}

/* Secondary */
.btn-secondary {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}

.btn-secondary:hover {
  background: var(--clr-primary-light);
  transform: translateY(-1px);
}

/* Ghost */
.btn-ghost {
  background: var(--bg-elevated);
  color: var(--txt-primary);
  border-color: var(--brd-default);
}

.btn-ghost:hover {
  background: var(--bg-overlay);
  border-color: var(--brd-strong);
}

/* Glass button (for hero sections) */
.btn-glass {
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  color: #fff;
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: rgba(255,255,255,.25);
  color: #fff;
  transform: translateY(-2px);
}

/* Danger */
.btn-danger {
  background: var(--clr-error);
  color: #fff;
  border-color: transparent;
}

.btn-danger:hover { filter: brightness(1.1); }

/* Icon button */
.btn-icon {
  width: 36px; height: 36px;
  padding: 0;
  border-radius: var(--r-md);
}

/* Loading state */
.btn.loading { opacity: .7; pointer-events: none; }
.btn.loading::after {
  content: '';
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  margin-left: var(--sp-2);
}

/* ═══════════════════════════════════════════════
   CARDS
═══════════════════════════════════════════════ */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--brd-default);
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: border-color var(--tr-normal), box-shadow var(--tr-normal), transform var(--tr-normal);
}

.card-hover:hover {
  border-color: hsl(225, 70%, 80%);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-5px);
}

[data-theme="dark"] .card-hover:hover {
  border-color: hsl(225, 60%, 35%);
}

.card__body { padding: var(--sp-6); }
.card__body-sm { padding: var(--sp-4); }

.card__image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-elevated);
}

.card__image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.card-hover:hover .card__image img { transform: scale(1.04); }

/* Post card */
.post-card { cursor: pointer; }
.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.post-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--brd-default);
}

/* Product card */
.product-card { cursor: pointer; }
.product-card__image {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--bg-elevated);
}

.product-card__image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.card-hover:hover .product-card__image img { transform: scale(1.06); }

.product-card__price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-3);
}

.price-main {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-error);
}

.price-original {
  font-size: var(--fs-sm);
  color: var(--txt-muted);
  text-decoration: line-through;
  margin-left: var(--sp-2);
}

/* ═══════════════════════════════════════════════
   BADGES & TAGS
═══════════════════════════════════════════════ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  line-height: 1;
}

.badge-primary { background: var(--clr-primary-light); color: var(--clr-primary); }
.badge-secondary { background: hsl(262,60%,93%); color: var(--clr-secondary); }
.badge-success { background: hsl(152,60%,90%); color: var(--clr-success); }
.badge-warning { background: hsl(38,90%,90%); color: var(--clr-warning); }
.badge-error   { background: hsl(0,75%,93%);  color: var(--clr-error); }
.badge-muted   { background: var(--bg-elevated); color: var(--txt-muted); }

[data-theme="dark"] .badge-secondary { background: hsl(262,40%,22%); }
[data-theme="dark"] .badge-success   { background: hsl(152,40%,18%); }
[data-theme="dark"] .badge-warning   { background: hsl(38, 60%,18%); }
[data-theme="dark"] .badge-error     { background: hsl(0,  50%,20%); }

/* Hot badge */
.badge-hot {
  background: linear-gradient(135deg, #ff4e50, #f9a825);
  color: #fff;
}

/* ═══════════════════════════════════════════════
   FORMS
═══════════════════════════════════════════════ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--txt-primary);
}

.form-label .required { color: var(--clr-error); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 11px var(--sp-4);
  background: var(--bg-surface);
  border: 1.5px solid var(--brd-default);
  border-radius: var(--r-lg);
  color: var(--txt-primary);
  font-size: var(--fs-base);
  transition: border-color var(--tr-fast), box-shadow var(--tr-fast), background var(--tr-fast);
  outline: none;
}

.form-control::placeholder { color: var(--txt-disabled); }

.form-control:hover { border-color: var(--brd-strong); }

.form-control:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px hsl(225,70%,55%,.15);
}

.form-control.error {
  border-color: var(--clr-error);
  box-shadow: 0 0 0 3px hsl(0,75%,55%,.12);
}

.form-control.success {
  border-color: var(--clr-success);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
  line-height: var(--lh-normal);
}

.form-hint {
  font-size: var(--fs-xs);
  color: var(--txt-muted);
}

.form-error {
  font-size: var(--fs-xs);
  color: var(--clr-error);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

/* Password strength */
.pwd-strength {
  margin-top: var(--sp-2);
}

.pwd-strength__bar {
  height: 4px;
  border-radius: var(--r-full);
  background: var(--bg-overlay);
  overflow: hidden;
  margin-bottom: 6px;
}

.pwd-strength__fill {
  height: 100%;
  border-radius: var(--r-full);
  transition: width .4s ease, background .4s ease;
}

.pwd-strength__fill[data-level="1"] { width: 25%; background: var(--clr-error); }
.pwd-strength__fill[data-level="2"] { width: 50%; background: var(--clr-warning); }
.pwd-strength__fill[data-level="3"] { width: 75%; background: var(--clr-info); }
.pwd-strength__fill[data-level="4"] { width: 100%; background: var(--clr-success); }

.pwd-strength__label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
}

.pwd-strength__label[data-level="1"] { color: var(--clr-error); }
.pwd-strength__label[data-level="2"] { color: var(--clr-warning); }
.pwd-strength__label[data-level="3"] { color: var(--clr-info); }
.pwd-strength__label[data-level="4"] { color: var(--clr-success); }

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  cursor: pointer;
  user-select: none;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 16px; height: 16px;
  accent-color: var(--clr-primary);
  cursor: pointer;
}

/* ═══════════════════════════════════════════════
   ALERTS / BANNERS
═══════════════════════════════════════════════ */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border-radius: var(--r-lg);
  border: 1px solid transparent;
  font-size: var(--fs-sm);
}

.alert-success {
  background: hsl(152,60%,94%);
  border-color: hsl(152,60%,78%);
  color: hsl(152,60%,25%);
}

.alert-error {
  background: hsl(0,75%,95%);
  border-color: hsl(0,75%,80%);
  color: hsl(0,75%,35%);
}

.alert-warning {
  background: hsl(38,90%,93%);
  border-color: hsl(38,90%,72%);
  color: hsl(38,90%,25%);
}

.alert-info {
  background: hsl(210,80%,94%);
  border-color: hsl(210,80%,78%);
  color: hsl(210,80%,30%);
}

[data-theme="dark"] .alert-success { background: hsl(152,40%,14%); border-color: hsl(152,40%,25%); color: hsl(152,60%,65%); }
[data-theme="dark"] .alert-error   { background: hsl(0, 50%,14%);  border-color: hsl(0, 50%,28%);  color: hsl(0, 75%,70%); }
[data-theme="dark"] .alert-warning { background: hsl(38, 60%,14%); border-color: hsl(38, 60%,28%); color: hsl(38, 90%,68%); }
[data-theme="dark"] .alert-info    { background: hsl(210,60%,14%); border-color: hsl(210,60%,28%); color: hsl(210,80%,68%); }

/* ═══════════════════════════════════════════════
   AVATAR
═══════════════════════════════════════════════ */

.avatar {
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--clr-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: var(--fw-bold);
}

.avatar-xs { width: 24px; height: 24px; font-size: var(--fs-xs); }
.avatar-sm { width: 32px; height: 32px; font-size: var(--fs-sm); }
.avatar-md { width: 40px; height: 40px; font-size: var(--fs-base); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--fs-lg); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--fs-2xl); }

.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ═══════════════════════════════════════════════
   DIVIDER
═══════════════════════════════════════════════ */

.divider {
  width: 100%;
  height: 1px;
  background: var(--brd-default);
  margin-block: var(--sp-6);
}

.divider-text {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  color: var(--txt-muted);
  font-size: var(--fs-xs);
}

.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--brd-default);
}

/* ═══════════════════════════════════════════════
   TOAST NOTIFICATIONS
═══════════════════════════════════════════════ */

.toast-container {
  position: fixed;
  top: calc(var(--nav-height) + var(--sp-4));
  right: var(--sp-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--bg-surface);
  border: 1px solid var(--brd-default);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  pointer-events: all;
  animation: slideFromRight .3s ease, fadeOut .3s ease 2.7s forwards;
  max-width: 320px;
}

.toast-success { border-left: 3px solid var(--clr-success); }
.toast-error   { border-left: 3px solid var(--clr-error); }
.toast-warning { border-left: 3px solid var(--clr-warning); }
.toast-info    { border-left: 3px solid var(--clr-primary); }

/* ═══════════════════════════════════════════════
   SKELETON LOADING
═══════════════════════════════════════════════ */

.skeleton {
  background: linear-gradient(90deg,
    var(--bg-elevated) 25%,
    var(--bg-overlay) 50%,
    var(--bg-elevated) 75%
  );
  background-size: 400% 100%;
  animation: shimmer 1.5s ease infinite;
  border-radius: var(--r-md);
}

/* ═══════════════════════════════════════════════
   PAGINATION
═══════════════════════════════════════════════ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  margin-top: var(--sp-8);
}

.page-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--txt-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--brd-default);
  cursor: pointer;
  transition: all var(--tr-fast);
}

.page-btn:hover { background: var(--bg-elevated); color: var(--clr-primary); }

.page-btn.active {
  background: var(--clr-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 12px hsla(225,70%,55%,.3);
}

.page-btn:disabled {
  opacity: .4;
  cursor: not-allowed;
}

/* ═══════════════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════════════ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--clr-gradient-hero);
  color: #fff;
}

@media (max-width: 767px) {
  .hero {
    /* hero 在 page-wrapper 内部，page-wrapper 已有 padding-top: 52px */
    /* 所以 hero 不需要额外的 padding-top */
    padding-top: 0 !important;
    min-height: calc(100vh - 52px - var(--mobile-nav-h)) !important;
    box-sizing: border-box;
  }
}

.hero__bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .35;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  width: 100%;
}

.hero__title {
  font-size: clamp(var(--fs-3xl), 6vw, var(--fs-5xl));
  font-weight: var(--fw-extrabold);
  color: #fff;
  line-height: 1.1;
  margin-bottom: var(--sp-6);
}

.hero__subtitle {
  font-size: clamp(var(--fs-base), 2vw, var(--fs-lg));
  color: rgba(255,255,255,.8);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--sp-10);
}

.hero__actions {
  display: flex;
  gap: var(--sp-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* Stat cards in hero */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-16);
}

@media (max-width: 768px) {
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }
}

.stat-card {
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-xl);
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
  transition: transform var(--tr-normal), background var(--tr-normal);
}

.stat-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.18);
}

.stat-card__value {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  color: #fff;
  line-height: 1;
  margin-bottom: var(--sp-1);
}

.stat-card__label {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.7);
}

/* Shop hero banner */
.shop-hero {
  background: var(--clr-gradient);
  padding: var(--sp-10) 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

@media (max-width: 767px) {
  .shop-hero {
    /* shop-hero 在 page-wrapper 内部，page-wrapper 已有 padding-top: 52px */
    /* 所以只需要额外的 sp-10 padding，不需要再加 52px */
    padding-top: var(--sp-10);
  }
}

/* ═══════════════════════════════════════════════
   SECTION
═══════════════════════════════════════════════ */

.section { padding-block: var(--sp-20); }
.section-alt { background: var(--bg-elevated); }

.section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--sp-10);
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.section__title-group {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.section__icon {
  width: 48px; height: 48px;
  border-radius: var(--r-lg);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.section__icon svg { width: 24px; height: 24px; color: #fff; }

.section__title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--txt-primary);
}

.section__subtitle {
  font-size: var(--fs-sm);
  color: var(--txt-muted);
  margin-top: 2px;
}

.section__link {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-primary);
  white-space: nowrap;
  transition: gap var(--tr-fast);
}

.section__link:hover { gap: var(--sp-2); }

.section__link svg { width: 16px; height: 16px; }

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */

.footer {
  background: hsl(225, 30%, 8%);
  color: hsl(220, 12%, 65%);
  padding-block: var(--sp-12) var(--sp-6);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-8);
}

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
}

.footer__col-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: #fff;
  margin-bottom: var(--sp-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.footer__link {
  font-size: var(--fs-sm);
  color: hsl(220,12%,65%);
  transition: color var(--tr-fast);
}

.footer__link:hover { color: #fff; }

.footer__desc {
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  color: hsl(220,10%,50%);
  margin-top: var(--sp-3);
}

.footer__bottom {
  border-top: 1px solid hsl(225,25%,18%);
  padding-top: var(--sp-6);
  text-align: center;
  font-size: var(--fs-xs);
  color: hsl(220,10%,45%);
}

/* ═══════════════════════════════════════════════
   AUTH PAGES
═══════════════════════════════════════════════ */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-6);
  background: var(--clr-gradient-hero);
  position: relative;
  overflow: hidden;
}

.auth-page__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.auth-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: var(--bg-surface);
  border-radius: var(--r-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--sp-10) var(--sp-8);
  animation: scaleIn .4s cubic-bezier(.16,1,.3,1);
}

@media (max-width: 480px) {
  .auth-card { padding: var(--sp-8) var(--sp-5); border-radius: var(--r-xl); }
}

.auth-card__logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--sp-8);
  text-align: center;
}

.auth-card__logo-icon {
  width: 64px; height: 64px;
  border-radius: var(--r-xl);
  background: var(--clr-gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  color: #fff;
  box-shadow: 0 8px 24px hsla(225,70%,55%,.4);
  margin-bottom: var(--sp-4);
}

.auth-card__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--txt-primary);
  margin-bottom: var(--sp-1);
}

.auth-card__subtitle {
  font-size: var(--fs-sm);
  color: var(--txt-muted);
}

.auth-form { display: flex; flex-direction: column; gap: var(--sp-5); }

.auth-form__actions { margin-top: var(--sp-2); }

.auth-form__footer {
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--txt-muted);
  margin-top: var(--sp-5);
}

.auth-form__footer a { color: var(--clr-primary); font-weight: var(--fw-semibold); }

/* Input with icon */
.input-wrapper {
  position: relative;
}

.input-wrapper .input-icon {
  position: absolute;
  top: 50%; left: var(--sp-4);
  transform: translateY(-50%);
  color: var(--txt-muted);
  pointer-events: none;
  width: 18px; height: 18px;
}

.input-wrapper .form-control { padding-left: calc(var(--sp-4) + 18px + var(--sp-2)); }

.input-wrapper .input-toggle {
  position: absolute;
  top: 50%; right: var(--sp-4);
  transform: translateY(-50%);
  color: var(--txt-muted);
  cursor: pointer;
  padding: 2px;
  transition: color var(--tr-fast);
}

.input-wrapper .input-toggle:hover { color: var(--clr-primary); }

/* ═══════════════════════════════════════════════
   COMMENT SECTION
═══════════════════════════════════════════════ */

.comment-item {
  display: flex;
  gap: var(--sp-4);
  padding-block: var(--sp-4);
  border-bottom: 1px solid var(--brd-default);
}

.comment-item:last-child { border-bottom: none; }

.comment-body { flex: 1; }

.comment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-2);
}

.comment-author { font-weight: var(--fw-semibold); font-size: var(--fs-sm); }
.comment-date   { font-size: var(--fs-xs); color: var(--txt-muted); }
.comment-text   { font-size: var(--fs-sm); color: var(--txt-secondary); line-height: var(--lh-loose); }

.comment-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-3);
}

.comment-like {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: var(--fs-xs);
  color: var(--txt-muted);
  cursor: pointer;
  transition: color var(--tr-fast);
}

.comment-like:hover,
.comment-like.active { color: var(--clr-error); }

/* ═══════════════════════════════════════════════
   INTERACTION BAR (article)
═══════════════════════════════════════════════ */

.interact-bar {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: var(--sp-4);
}

.interact-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--r-lg);
  color: var(--txt-muted);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: all var(--tr-fast);
}

.interact-btn:hover { color: var(--clr-primary); background: var(--clr-primary-light); }
.interact-btn.liked { color: var(--clr-error); }
.interact-btn.liked:hover { background: hsl(0,75%,94%); }
.interact-btn.faved { color: var(--clr-warning); }

.interact-btn svg { width: 22px; height: 22px; }

/* ═══════════════════════════════════════════════
   LOADING OVERLAY
═══════════════════════════════════════════════ */

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay[style*="display: none"],
.loading-overlay:has([x-show="false"]) {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-overlay__spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--brd-default);
  border-top-color: var(--clr-primary);
  border-radius: var(--r-full);
  animation: spin 0.8s linear infinite;
}

.loading-overlay__text {
  margin-top: var(--sp-4);
  font-size: var(--fs-sm);
  color: var(--txt-muted);
}

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

/* ═══════════════════════════════════════════════
   AUTHENTICATION PAGE
═══════════════════════════════════════════════ */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  position: relative;
  overflow: hidden;
}

.auth-page__orb {
  position: absolute;
  border-radius: var(--r-full);
  filter: blur(80px);
  opacity: 0.6;
}

.auth-card {
  position: relative;
  width: 100%;
  max-width: 420px;
  padding: var(--sp-8) var(--sp-6);
  background: var(--bg-elevated);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
}

.auth-card__logo {
  text-align: center;
  margin-bottom: var(--sp-6);
}

.auth-card__logo-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: #fff;
  font-size: 32px;
  font-weight: var(--fw-bold);
  border-radius: var(--r-xl);
}

.auth-card__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--txt-primary);
}

.auth-card__subtitle {
  font-size: var(--fs-sm);
  color: var(--txt-muted);
  margin-top: 4px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.auth-form__footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  margin-top: var(--sp-6);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--brd-default);
  font-size: var(--fs-sm);
  color: var(--txt-muted);
}

.auth-form__footer a {
  color: var(--clr-primary);
  font-weight: var(--fw-medium);
  text-decoration: none;
}

.auth-form__footer a:hover { text-decoration: underline; }

/* Password strength */
.pwd-strength {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.pwd-strength__bar {
  flex: 1;
  height: 6px;
  background: var(--brd-default);
  border-radius: var(--r-full);
  overflow: hidden;
}

.pwd-strength__fill {
  height: 100%;
  border-radius: var(--r-full);
  transition: width 0.3s ease, background 0.3s ease;
}

.pwd-strength__fill[data-level="1"] { width: 25%; background: var(--clr-error); }
.pwd-strength__fill[data-level="2"] { width: 50%; background: var(--clr-warning); }
.pwd-strength__fill[data-level="3"] { width: 75%; background: hsl(45, 90%, 55%); }
.pwd-strength__fill[data-level="4"] { width: 100%; background: var(--clr-success); }

.pwd-strength__label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
}

.pwd-strength__label[data-level="1"] { color: var(--clr-error); }
.pwd-strength__label[data-level="2"] { color: var(--clr-warning); }
.pwd-strength__label[data-level="3"] { color: hsl(45, 90%, 55%); }
.pwd-strength__label[data-level="4"] { color: var(--clr-success); }