/* ==========================================================================
   网页集锦 — 设计系统
   概念：一个私人的网页标本柜（archive cabinet）。
   分组 = 抽屉标签，卡片 = 标本卡：缩略图如同贴片，标题与来源如同标签条。
   ========================================================================== */

:root {
  /* 色板 */
  --ink: #15171b;
  --panel: #1c1f24;
  --panel-raised: #262a32;
  --line: #2d3138;
  --line-soft: #24272d;
  --paper: #ece7dd;
  --paper-dim: #c9c4b8;
  --mute: #8b8f96;
  --mute-dim: #64686f;
  --signal: #9cba8d;
  --signal-dim: #7fa072;
  --signal-wash: rgba(156, 186, 141, 0.12);
  --danger: #c97b6e;
  --danger-wash: rgba(201, 123, 110, 0.14);

  /* 标签色（用于分组标记点，围绕主色形成一个克制的家族） */
  --tag-sage: #9cba8d;
  --tag-clay: #c99b93;
  --tag-gold: #c4a76a;
  --tag-slate: #8fa3bd;
  --tag-plum: #a893b0;

  /* 字体 */
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Courier New", monospace;

  /* 间距 */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;

  /* 圆角 */
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 10px;
  --r-xl: 14px;

  --sidebar-w: 248px;
  --header-h: 68px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button, input, select {
  font-family: inherit;
  color: inherit;
}

.hidden {
  display: none !important;
}

svg {
  display: block;
  flex-shrink: 0;
}

/* 可见的键盘焦点样式 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* 细滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}

#app {
  height: 100%;
  position: relative;
}

/* ==========================================================================
   登录界面
   ========================================================================== */

.login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  overflow: hidden;
  z-index: 100;
}

.login-glow {
  position: absolute;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--signal-wash) 0%, rgba(156, 186, 141, 0) 70%);
  animation: driftGlow 14s ease-in-out infinite;
  pointer-events: none;
}

@keyframes driftGlow {
  0%, 100% { transform: translate(-6%, -4%) scale(1); }
  50% { transform: translate(6%, 4%) scale(1.08); }
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 300px;
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  animation: cardRise 0.6s var(--ease-out);
}

@keyframes cardRise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-mark {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-lg);
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--signal);
}

.login-card h1 {
  margin: 0 0 var(--sp-1);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.login-sub {
  margin: 0 0 var(--sp-6);
  font-size: 13px;
  color: var(--mute);
}

.login-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  color: var(--paper);
  font-size: 14px;
  text-align: center;
  letter-spacing: 0.12em;
  transition: border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.login-input::placeholder {
  color: var(--mute-dim);
  letter-spacing: normal;
}

.login-input:focus {
  outline: none;
  border-color: var(--signal-dim);
  background: var(--panel-raised);
}

.login-btn {
  position: relative;
  width: 100%;
  margin-top: var(--sp-3);
  padding: 12px;
  background: var(--signal);
  border: none;
  border-radius: var(--r-md);
  color: #14231a;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s var(--ease-out), background 0.2s var(--ease-out), opacity 0.2s;
}

.login-btn:hover {
  background: #a9c99a;
}

.login-btn:active {
  transform: scale(0.97);
}

.login-btn.loading .btn-text {
  opacity: 0;
}

.btn-spinner {
  display: none;
}

.login-btn.loading .btn-spinner {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 15px;
  height: 15px;
  margin: -7.5px 0 0 -7.5px;
  border: 2px solid rgba(20, 35, 26, 0.35);
  border-top-color: #14231a;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.login-error {
  min-height: 18px;
  margin: var(--sp-3) 0 0;
  font-size: 12.5px;
  color: var(--danger);
}

.login-card.shake {
  animation: shake 0.4s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(7px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(3px); }
}

/* ==========================================================================
   主体布局
   ========================================================================== */

.main-app {
  display: flex;
  height: 100%;
  animation: appFadeIn 0.5s var(--ease-out);
}

@keyframes appFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  padding: var(--sp-5) var(--sp-3);
}

.sidebar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-2);
  margin-bottom: var(--sp-6);
}

.brand {
  display: flex;
  align-items: center;
}

.brand-mark {
  color: var(--signal);
  margin-right: var(--sp-2);
}

.brand-text {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.sidebar-close {
  display: none;
}

.group-list {
  position: relative;
  flex: 1;
  overflow-y: auto;
  padding-left: var(--sp-2);
}

.group-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px var(--sp-3) 9px 14px;
  margin-bottom: 2px;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background 0.18s var(--ease-out);
}

.group-item:hover {
  background: var(--panel-raised);
}

.group-item.active {
  background: var(--panel-raised);
}

.group-item-left {
  display: flex;
  align-items: center;
  min-width: 0;
}

.group-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 10px;
  flex-shrink: 0;
}

.group-name {
  font-size: 13.5px;
  color: var(--paper-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.18s var(--ease-out);
}

.group-item.active .group-name {
  color: var(--paper);
  font-weight: 500;
}

.group-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mute-dim);
  flex-shrink: 0;
  margin-left: var(--sp-2);
}

.group-delete {
  display: none;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  color: var(--mute);
  cursor: pointer;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.group-item:hover .group-delete {
  display: flex;
}

.group-item:hover .group-count {
  display: none;
}

.group-delete:hover {
  color: var(--danger);
  background: var(--danger-wash);
}

/* 抽屉标签滑动指示条：签名交互 */
.group-indicator {
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  border-radius: 3px;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal-wash);
  transition: transform 0.32s var(--ease-spring), height 0.32s var(--ease-spring), opacity 0.2s;
  opacity: 0;
  pointer-events: none;
}

.group-indicator.visible {
  opacity: 1;
}

.add-group-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--sp-2);
  padding: 9px;
  background: transparent;
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
  color: var(--mute);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 0.18s var(--ease-out), color 0.18s var(--ease-out);
}

.add-group-btn svg {
  margin-right: 6px;
}

.add-group-btn:hover {
  border-color: var(--signal-dim);
  color: var(--signal);
}

.sidebar-bottom {
  margin-top: var(--sp-4);
  padding: 0 var(--sp-2);
}

.text-btn {
  background: none;
  border: none;
  color: var(--mute-dim);
  font-size: 12.5px;
  cursor: pointer;
  padding: 4px 0;
}

.text-btn:hover {
  color: var(--mute);
}

.sidebar-backdrop {
  display: none;
}

/* ==========================================================================
   主内容区
   ========================================================================== */

.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
}

.content-header {
  height: var(--header-h);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-6);
  border-bottom: 1px solid var(--line-soft);
}

.header-left {
  display: flex;
  align-items: center;
  min-width: 0;
}

.content-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.group-count {
  font-family: var(--font-mono);
}

.header-left > .group-count {
  margin-left: 10px;
  font-size: 12px;
  color: var(--mute-dim);
}

.mobile-menu-btn {
  display: none;
  margin-right: var(--sp-3);
}

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

.header-actions > * {
  margin-left: var(--sp-3);
}

/* ==========================================================================
   按钮
   ========================================================================== */

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--r-md);
  color: var(--mute);
  cursor: pointer;
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out);
}

.icon-btn:hover {
  background: var(--panel-raised);
  color: var(--paper);
}

.ghost-btn, .primary-btn, .danger-btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s var(--ease-out), background 0.18s var(--ease-out), border-color 0.18s var(--ease-out), opacity 0.18s;
  white-space: nowrap;
}

.ghost-btn svg, .primary-btn svg, .danger-btn svg {
  margin-right: 6px;
}

.ghost-btn {
  background: transparent;
  border-color: var(--line);
  color: var(--paper-dim);
}

.ghost-btn:hover {
  border-color: var(--mute-dim);
  color: var(--paper);
}

.primary-btn {
  background: var(--signal);
  color: #14231a;
}

.primary-btn:hover {
  background: #a9c99a;
}

.primary-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

.danger-btn {
  background: var(--danger);
  color: #2a1310;
}

.danger-btn:hover {
  background: #d68d80;
}

.ghost-btn:active, .primary-btn:active, .danger-btn:active, .icon-btn:active {
  transform: scale(0.96);
}

/* ==========================================================================
   卡片网格
   ========================================================================== */

.card-grid {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-6);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(216px, 1fr));
  gap: var(--sp-5);
  align-content: start;
}

.bookmark-card {
  position: relative;
  border-radius: var(--r-lg);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.22s var(--ease-out), border-color 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out);
  animation: cardIn 0.42s var(--ease-out) backwards;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.bookmark-card:hover {
  transform: translateY(-3px);
  border-color: var(--line);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.card-thumb-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: var(--panel-raised);
  overflow: hidden;
}

.card-thumb-wrap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-out);
}

.bookmark-card:hover .card-thumb-wrap img {
  transform: scale(1.04);
}

.card-thumb-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.82);
  text-transform: uppercase;
}

.card-delete-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--r-sm);
  background: rgba(15, 16, 19, 0.6);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  color: #fff;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.16s var(--ease-out), transform 0.16s var(--ease-out), background 0.16s var(--ease-out);
}

.bookmark-card:hover .card-delete-btn {
  opacity: 1;
  transform: scale(1);
}

.card-delete-btn:hover {
  background: var(--danger);
}

.card-delete-btn.confirming {
  opacity: 1;
  transform: scale(1);
  background: var(--danger);
}

.card-info {
  padding: 11px 13px 13px;
  border-top: 1px solid var(--line-soft);
}

.card-title {
  margin: 0 0 4px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--paper);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mute-dim);
}

.card-meta .group-dot {
  margin-right: 6px;
}

.card-domain {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bookmark-card.removing {
  animation: cardOut 0.28s var(--ease-out) forwards;
  pointer-events: none;
}

@keyframes cardOut {
  to { opacity: 0; transform: scale(0.92); }
}

/* ==========================================================================
   空状态
   ========================================================================== */

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-8);
  text-align: center;
}

.empty-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-xl);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  color: var(--mute-dim);
  margin-bottom: var(--sp-4);
}

.empty-title {
  margin: 0 0 var(--sp-1);
  font-size: 15px;
  font-weight: 500;
  color: var(--paper-dim);
}

.empty-sub {
  margin: 0;
  font-size: 13px;
  color: var(--mute-dim);
}

/* ==========================================================================
   弹窗
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 11, 13, 0.6);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  padding: var(--sp-4);
  animation: overlayIn 0.2s var(--ease-out);
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  width: 100%;
  max-width: 420px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  animation: modalIn 0.26s var(--ease-out);
}

.modal-small {
  max-width: 360px;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(8px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-5) var(--sp-3);
  flex-shrink: 0;
}

.modal-header h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.modal-body {
  padding: var(--sp-2) var(--sp-5) var(--sp-5);
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  padding: var(--sp-4) var(--sp-5);
  border-top: 1px solid var(--line-soft);
  flex-shrink: 0;
}

.modal-footer > * {
  margin-left: var(--sp-2);
}

/* ==========================================================================
   表单元素
   ========================================================================== */

.text-input, .select-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  color: var(--paper);
  font-size: 13.5px;
  transition: border-color 0.18s var(--ease-out);
}

.text-input::placeholder {
  color: var(--mute-dim);
}

.text-input:focus, .select-input:focus {
  outline: none;
  border-color: var(--signal-dim);
}

.select-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M6 9l6 6 6-6' stroke='%238b8f96' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
  cursor: pointer;
}

.field-row {
  margin-top: var(--sp-4);
}

.field-label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  color: var(--mute);
}

/* ==========================================================================
   添加书签：预览区
   ========================================================================== */

.preview-area {
  margin-top: var(--sp-3);
  min-height: 64px;
  border-radius: var(--r-md);
}

.preview-placeholder {
  padding: var(--sp-4);
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
  font-size: 12.5px;
  color: var(--mute-dim);
  text-align: center;
}

.preview-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-6) var(--sp-4);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  font-size: 12.5px;
  color: var(--mute);
}

.spinner {
  width: 20px;
  height: 20px;
  margin-bottom: var(--sp-2);
  border: 2px solid var(--line);
  border-top-color: var(--signal);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.preview-result {
  display: flex;
  align-items: center;
  padding: var(--sp-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  animation: fadeIn 0.25s var(--ease-out);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.preview-thumb {
  width: 64px;
  height: 44px;
  flex-shrink: 0;
  margin-right: var(--sp-3);
  border-radius: var(--r-sm);
  background: var(--panel-raised);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--mute);
  overflow: hidden;
}

.preview-title-input {
  border: none;
  background: transparent;
  padding: 4px 0;
}

/* ==========================================================================
   导入书签
   ========================================================================== */

.import-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-8) var(--sp-4);
  border: 1px dashed var(--line);
  border-radius: var(--r-lg);
  color: var(--mute);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.18s var(--ease-out), background 0.18s var(--ease-out);
}

.import-drop svg {
  margin-bottom: var(--sp-3);
  color: var(--signal-dim);
}

.import-drop p {
  margin: 0 0 4px;
  font-size: 13.5px;
  color: var(--paper-dim);
}

.import-hint {
  font-size: 11.5px;
  color: var(--mute-dim);
}

.import-drop:hover, .import-drop.dragover {
  border-color: var(--signal-dim);
  background: var(--signal-wash);
}

.import-preview {
  margin-top: var(--sp-4);
  animation: fadeIn 0.25s var(--ease-out);
}

.import-summary {
  margin: 0 0 var(--sp-3);
  font-size: 13px;
  color: var(--paper-dim);
}

.import-summary strong {
  color: var(--signal);
  font-weight: 600;
}

.import-group-list {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
}

.import-group-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  font-size: 12.5px;
}

.import-group-row:not(:last-child) {
  border-bottom: 1px solid var(--line-soft);
}

.import-group-row .group-name {
  color: var(--paper-dim);
}

.import-group-row .group-count {
  color: var(--mute-dim);
}

.import-progress {
  margin-top: var(--sp-4);
}

.progress-bar {
  height: 5px;
  border-radius: 5px;
  background: var(--line-soft);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--signal);
  border-radius: 5px;
  transition: width 0.3s var(--ease-out);
}

#progress-text {
  margin: var(--sp-2) 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mute-dim);
  text-align: center;
}

/* ==========================================================================
   确认弹窗
   ========================================================================== */

.confirm-text {
  margin: var(--sp-2) 0;
  font-size: 13.5px;
  color: var(--paper-dim);
  line-height: 1.6;
}

/* ==========================================================================
   Toast 提示
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: var(--sp-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.toast {
  padding: 10px 18px;
  margin-top: var(--sp-2);
  background: var(--panel-raised);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  font-size: 12.5px;
  color: var(--paper);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  animation: toastIn 0.3s var(--ease-out);
}

.toast.leaving {
  animation: toastOut 0.25s var(--ease-out) forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateY(6px); }
}

/* ==========================================================================
   响应式：移动端
   ========================================================================== */

@media (max-width: 860px) {
  .mobile-menu-btn {
    display: flex;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 150;
    transform: translateX(-100%);
    transition: transform 0.28s var(--ease-out);
    box-shadow: 20px 0 40px rgba(0, 0, 0, 0.3);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-close {
    display: flex;
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 140;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s var(--ease-out);
  }

  .sidebar-backdrop.visible {
    display: block;
  }

  .content-header {
    padding: 0 var(--sp-4);
  }

  .header-actions .btn-label {
    display: none;
  }

  .ghost-btn svg, .primary-btn svg {
    margin-right: 0;
  }

  .header-actions #add-bookmark-btn svg {
    margin-right: 6px;
  }

  .card-grid {
    padding: var(--sp-4);
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--sp-3);
  }

  .card-delete-btn {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 480px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   减少动效偏好
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .login-glow {
    animation: none;
  }
}