/* ============================================================
   SLTE Design System — CSS Variables & Global Styles
   Color Palette: Sage Green + Warm Slate (淡雅系)
   Spacing Unit: 8px
   ============================================================ */

:root {
  /* ── Brand Colors ── */
  --color-primary:        #4A7C6F;   /* sage green */
  --color-primary-light:  #6B9E91;
  --color-primary-dark:   #345A50;
  --color-primary-bg:     #EBF4F1;   /* very light sage */
  --color-primary-muted:  #C8DDD9;

  /* ── Accent ── */
  --color-accent:         #7B9E87;
  --color-accent-light:   #A8C4B0;

  /* ── Semantic Colors ── */
  --color-success:        #52A87A;
  --color-success-bg:     #EAF6EF;
  --color-warning:        #D4956A;
  --color-warning-bg:     #FDF3EC;
  --color-danger:         #C0706A;
  --color-danger-bg:      #FAEEED;
  --color-info:           #5B8DB8;
  --color-info-bg:        #EBF3FA;

  /* ── Neutral Palette ── */
  --color-bg:             #F3F6F8;   /* page background */
  --color-surface:        #FFFFFF;   /* card surface */
  --color-surface-2:      #F7F9FC;   /* subtle surface */
  --color-border:         #DCE3EA;
  --color-border-light:   #E6EBF1;
  --color-divider:        #E4EAF0;

  /* ── Text ── */
  --color-text-primary:   #1E2A35;
  --color-text-secondary: #5A6A78;
  --color-text-muted:     #8E9BAA;
  --color-text-disabled:  #B8C4CE;
  --color-text-inverse:   #FFFFFF;

  /* ── Spacing (8px unit) ── */
  --space-1:  10px;
  --space-2:  18px;
  --space-3:  28px;
  --space-4:  40px;
  --space-5:  52px;
  --space-6:  68px;
  --space-half: 5px;
  --space-1h: 14px;

  /* ── Border Radius ── */
  --radius-sm:   10px;
  --radius-md:   14px;
  --radius-lg:   18px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-xs:   0 1px 2px rgba(15, 23, 42, .04);
  --shadow-sm:   0 4px 12px rgba(15, 23, 42, .05);
  --shadow-md:   0 10px 28px rgba(15, 23, 42, .07);
  --shadow-lg:   0 24px 56px rgba(15, 23, 42, .09);
  --shadow-card: 0 0 0 1px rgba(30, 42, 53, .04), 0 6px 20px rgba(15, 23, 42, .04);

  /* ── Typography ── */
  --font-sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono:  "SF Mono", "Fira Code", Consolas, monospace;

  --text-xs:    12px;
  --text-sm:    14px;
  --text-base:  16px;
  --text-md:    18px;
  --text-lg:    22px;
  --text-xl:    30px;
  --text-2xl:   40px;
  --text-3xl:   52px;

  --leading-tight:  1.3;
  --leading-normal: 1.65;
  --leading-loose:  1.8;

  /* ── Transitions ── */
  --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in:    cubic-bezier(0.64, 0, 0.78, 0);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast:   150ms;
  --duration-base:   250ms;
  --duration-slow:   400ms;

  /* ── Z-index ── */
  --z-base:    1;
  --z-dropdown:  100;
  --z-sticky:    200;
  --z-overlay:   300;
  --z-modal:     400;
  --z-toast:     500;

  /* ── Layout ── */
  --sidebar-width:       272px;
  --sidebar-collapsed:   64px;
  --topbar-height:       72px;
  --content-max-width:   1560px;
  --mobile-nav-height:   76px;
}

/* ── Theme: Blue ── */
[data-theme="blue"] {
  --color-primary:       #4A6FA5;
  --color-primary-light: #6B8EC4;
  --color-primary-dark:  #2F4E7E;
  --color-primary-bg:    #EBF0FA;
  --color-primary-muted: #C5D5EE;
  --color-accent:        #7B9EC4;
  --color-shadow-card:   0 2px 12px rgba(74,111,165,.08);
}

/* ── Theme: Black ── */
[data-theme="black"] {
  --color-primary:       #3D4A56;
  --color-primary-light: #5A6A78;
  --color-primary-dark:  #252F38;
  --color-primary-bg:    #ECEEF0;
  --color-primary-muted: #C5CDD4;
  --color-accent:        #6A7A88;
}

/* ── Theme: Darkblue ── */
[data-theme="darkblue"] {
  --color-primary:       #3A5A8A;
  --color-primary-light: #5A7AAA;
  --color-primary-dark:  #24406A;
  --color-primary-bg:    #E8EEF6;
  --color-primary-muted: #B8CCDF;
  --color-accent:        #6A8AAA;
}

/* ============================================================
   Dark Mode — 夜色模式
   通过 body[data-dark="1"] 切换，各主题均适配
   ============================================================ */

/*
  夜色模式切换过渡动画：
  - 仅在 body[data-dark-ready] 存在时生效（由 JS 在首次切换前写入），
    首次页面加载时不触发，避免防闪烁脚本失效。
  - 过渡范围精确到颜色相关属性，不影响 transform/opacity 等动画性能。
*/
body[data-dark-ready] {
  transition:
    background-color 0.25s ease,
    color            0.25s ease,
    border-color     0.25s ease,
    box-shadow       0.25s ease;
}

body[data-dark-ready] *,
body[data-dark-ready] *::before,
body[data-dark-ready] *::after {
  transition:
    background-color 0.25s ease,
    color            0.25s ease,
    border-color     0.25s ease,
    fill             0.25s ease,
    stroke           0.25s ease;
}

body[data-dark="1"] {
  /* 中性色板：深色背景体系 */
  --color-bg:             #0F1218;   /* 页面背景 */
  --color-surface:        #171B24;   /* 卡片背景 */
  --color-surface-2:      #1F2430;   /* 次级表面 */
  --color-border:         #2B3342;
  --color-border-light:   #222A38;
  --color-divider:        #293140;

  /* 文字色板 */
  --color-text-primary:   #E8ECF4;
  --color-text-secondary: #9BA8C0;
  --color-text-muted:     #616D88;
  --color-text-disabled:  #404660;
  --color-text-inverse:   #0F1117;

  /* 语义色：适当调亮以在深色背景下清晰可见 */
  --color-success:        #5DBF8A;
  --color-success-bg:     #0D2A1C;
  --color-warning:        #E8A87A;
  --color-warning-bg:     #2A1A0A;
  --color-danger:         #E07A75;
  --color-danger-bg:      #2A1010;
  --color-info:           #6BA8D8;
  --color-info-bg:        #0A1E30;

  /* 阴影在深色模式下更深 */
  --shadow-xs:   0 1px 2px rgba(0,0,0,.18);
  --shadow-sm:   0 4px 12px rgba(0,0,0,.22);
  --shadow-md:   0 10px 28px rgba(0,0,0,.30);
  --shadow-lg:   0 24px 56px rgba(0,0,0,.36);
  --shadow-card: 0 0 0 1px rgba(255,255,255,.03), 0 10px 24px rgba(0,0,0,.18);
}

/* 夜色模式 × 默认主题（sage green） */
body[data-dark="1"]:not([data-theme]),
body[data-dark="1"][data-theme="default"] {
  --color-primary:        #5A9E91;
  --color-primary-light:  #7ABFB2;
  --color-primary-dark:   #3D7A6E;
  --color-primary-bg:     #0D2420;
  --color-primary-muted:  #1E4A42;
  --color-accent:         #7ABFB2;
}

/* 夜色模式 × blue */
body[data-dark="1"][data-theme="blue"] {
  --color-primary:        #6A8FC5;
  --color-primary-light:  #8AAFDF;
  --color-primary-dark:   #4A6FA5;
  --color-primary-bg:     #0D1A2E;
  --color-primary-muted:  #1E3555;
  --color-accent:         #8AAFDF;
}

/* 夜色模式 × black */
body[data-dark="1"][data-theme="black"] {
  --color-primary:        #7A8A98;
  --color-primary-light:  #9AAAB8;
  --color-primary-dark:   #5A6A78;
  --color-primary-bg:     #161A1E;
  --color-primary-muted:  #2A333C;
  --color-accent:         #9AAAB8;
}

/* 夜色模式 × darkblue */
body[data-dark="1"][data-theme="darkblue"] {
  --color-primary:        #5A7AAA;
  --color-primary-light:  #7A9ACA;
  --color-primary-dark:   #3A5A8A;
  --color-primary-bg:     #0A1628;
  --color-primary-muted:  #1A3055;
  --color-accent:         #7A9ACA;
}

/* 夜色模式下各组件的额外覆盖 */
body[data-dark="1"] .card {
  background: var(--color-surface);
  border-color: var(--color-border);
}

body[data-dark="1"] .form-input,
body[data-dark="1"] .form-select,
body[data-dark="1"] .form-textarea {
  background: var(--color-surface-2);
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

body[data-dark="1"] .form-input:focus,
body[data-dark="1"] .form-select:focus,
body[data-dark="1"] .form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

body[data-dark="1"] .btn-ghost {
  border-color: var(--color-border);
  color: var(--color-text-secondary);
}
body[data-dark="1"] .btn-ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text-primary);
}

body[data-dark="1"] .btn-secondary {
  background: var(--color-primary-bg);
  border-color: var(--color-primary-muted);
  color: var(--color-primary);
}

body[data-dark="1"] .btn-danger {
  background: var(--color-danger-bg);
  border-color: rgba(224,122,117,.25);
  color: var(--color-danger);
}

body[data-dark="1"] .modal-overlay {
  background: rgba(0,0,0,.65);
}

body[data-dark="1"] .modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

body[data-dark="1"] .dropdown-menu {
  background: var(--color-surface);
  border-color: var(--color-border);
  box-shadow: var(--shadow-lg);
}

body[data-dark="1"] .dropdown-item:hover {
  background: var(--color-surface-2);
}

body[data-dark="1"] .badge {
  background: var(--color-surface-2);
}

body[data-dark="1"] .progress-track {
  background: var(--color-surface-2);
}

body[data-dark="1"] .table th {
  background: var(--color-surface-2);
  border-color: var(--color-border);
}
body[data-dark="1"] .table td {
  border-color: var(--color-border-light);
}
body[data-dark="1"] .table tr:hover td {
  background: var(--color-surface-2);
}

body[data-dark="1"] .sub-action-item {
  border-bottom-color: var(--color-border-light);
}
body[data-dark="1"] .sub-action-item:hover {
  background: var(--color-surface-2);
}

/* 夜色模式切换按钮 — 与铃铛 icon-btn 完全统一，无背景无边框 */
.dark-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  color: var(--color-text-muted);
  transition: background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
  cursor: pointer;
  flex-shrink: 0;
}
/* dark-toggle-icon span 容器：消除 block 行高间距 */
#dark-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}
.dark-toggle svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: block;
}
.dark-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-text-primary);
}
body[data-dark="1"] .dark-toggle {
  color: var(--color-text-muted);
}
body[data-dark="1"] .dark-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-text-primary);
}

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

/* 禁用浏览器默认点击高亮（移动端浅蓝色框） */
* {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

/* 按钮、链接、交互元素：移除默认 outline，但保留键盘访问的自定义 focus 样式 */
button, a, [role="button"], label, select {
  outline: none;
}
button:focus-visible, a:focus-visible, [role="button"]:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 输入框保留自定义焦点样式（不用浏览器默认蓝色） */
input, textarea {
  outline: none;
}
input:focus, textarea:focus {
  /* 焦点样式由 .form-input:focus 控制 */
}

/* 保留文字选择功能（仅对交互元素禁用，文字内容不影响） */
button, [role="button"] {
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  line-height: var(--leading-normal);
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }
ul, ol { list-style: none; }

/* ============================================================
   Scrollbar
   ============================================================ */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* ============================================================
   Typography Utilities
   ============================================================ */
.text-xs    { font-size: var(--text-xs); }
.text-sm    { font-size: var(--text-sm); }
.text-base  { font-size: var(--text-base); }
.text-md    { font-size: var(--text-md); }
.text-lg    { font-size: var(--text-lg); }
.text-xl    { font-size: var(--text-xl); }
.text-2xl   { font-size: var(--text-2xl); }
.text-primary   { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted     { color: var(--color-text-muted); }
.text-brand     { color: var(--color-primary); }
.text-success   { color: var(--color-success); }
.text-warning   { color: var(--color-warning); }
.text-danger    { color: var(--color-danger); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================
   Layout Utilities
   ============================================================ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.items-end    { align-items: flex-end; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end     { justify-content: flex-end; }
.flex-1   { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.grid { display: grid; }
.hidden { display: none !important; }
.w-full { width: 100%; }
.h-full { height: 100%; }

/* ============================================================
   Card Component
   ============================================================ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: calc(var(--space-3) + 2px);
  transition: box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

.card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
}

.card-sm { padding: var(--space-2); border-radius: var(--radius-md); }
.card-lg { padding: var(--space-4); border-radius: var(--radius-xl); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.card-title {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-primary);
}

.card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ============================================================
   Button Component
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--duration-fast);
}

.btn:active::after { background: rgba(255,255,255,.15); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: none;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: none;
  transform: none;
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-muted);
}
.btn-secondary:hover {
  background: var(--color-primary-muted);
  border-color: var(--color-primary);
  transform: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid #E8C4C2;
}
.btn-danger:hover { background: #F5D5D3; }

.btn-sm {
  min-height: 40px;
  padding: 8px 14px;
  font-size: var(--text-sm);
  border-radius: 8px;
}
.btn-lg {
  min-height: 56px;
  padding: 16px var(--space-3);
  font-size: var(--text-md);
  border-radius: var(--radius-md);
}
.btn-full { width: 100%; }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }

.btn:disabled, .btn[disabled] {
  opacity: .5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-loading .btn-text { opacity: 0; }
.btn-loading::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

/* ============================================================
   Form Components
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.form-input {
  width: 100%;
  min-height: 52px;
  padding: 13px var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-surface-2);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  outline: none;
  -webkit-appearance: none;
}

.form-input::placeholder { color: var(--color-text-disabled); }
.form-input:hover { border-color: var(--color-primary-muted); }
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(74,124,111,.12);
}
.form-input.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 4px rgba(192,112,106,.10);
}

.form-input-group {
  position: relative;
  display: flex;
  align-items: center;
}
.form-input-group .form-input { padding-right: 48px; }
.form-input-group .input-suffix {
  position: absolute;
  right: 12px;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: 4px;
}
.form-input-group .input-prefix {
  position: absolute;
  left: 12px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
}
.form-input-group .has-prefix { padding-left: 40px; }

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
}

/* Toggle Switch */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  gap: var(--space-1);
}
.toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
  width: 50px;
  height: 28px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  transition: background var(--duration-fast);
  flex-shrink: 0;
  position: relative;
}
.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-out);
}
.toggle input:checked ~ .toggle-track { background: var(--color-primary); }
.toggle input:checked ~ .toggle-track .toggle-thumb { transform: translateX(22px); }
.toggle-label { font-size: var(--text-base); color: var(--color-text-secondary); }

/* ============================================================
   Badge & Tag
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
}
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info); }
.badge-neutral { background: var(--color-surface-2);  color: var(--color-text-muted); border: 1px solid var(--color-border); }
.badge-primary { background: var(--color-primary-bg); color: var(--color-primary); }

/* ============================================================
   Progress Bar
   ============================================================ */
.progress {
  width: 100%;
  height: 8px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
}
.progress-bar.warning { background: linear-gradient(90deg, var(--color-warning), #E8B080); }
.progress-bar.danger  { background: linear-gradient(90deg, var(--color-danger), #D4908A); }

/* ============================================================
   Skeleton Loading
   ============================================================ */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-border-light) 25%,
    var(--color-surface-2) 50%,
    var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   Toast Notification
   ============================================================ */
#toast-container {
  position: fixed;
  top: var(--space-2);
  right: var(--space-2);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 14px var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 3px solid var(--color-primary);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  min-width: 280px;
  max-width: 400px;
  pointer-events: all;
  animation: toast-in var(--duration-base) var(--ease-out);
  transform-origin: top right;
}
.toast.success { border-left-color: var(--color-success); }
.toast.warning { border-left-color: var(--color-warning); }
.toast.error   { border-left-color: var(--color-danger); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px) scale(.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(20px) scale(.95); }
}

/* ============================================================
   Modal
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.38);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  animation: fade-in var(--duration-base) var(--ease-out);
}
.modal-overlay.hidden { display: none; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modal-in var(--duration-base) var(--ease-out);
  border: 1px solid var(--color-border);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.modal-title { font-size: var(--text-lg); font-weight: 600; }
.modal-body  { padding: var(--space-3); }
.modal-footer {
  padding: var(--space-2) var(--space-3);
  border-top: 1px solid var(--color-divider);
  display: flex;
  gap: var(--space-1);
  justify-content: flex-end;
}

@keyframes modal-in {
  from { opacity: 0; transform: translateY(16px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   Misc Utilities
   ============================================================ */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-divider);
  margin: var(--space-2) 0;
}
.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-divider);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: all var(--duration-fast);
  cursor: pointer;
}
.icon-btn:hover {
  background: var(--color-surface-2);
  color: var(--color-text-primary);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-sm);
  color: var(--color-primary);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background var(--duration-fast);
}
.copy-btn:hover { background: var(--color-primary-bg); }

/* Stat Card */
.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: calc(var(--space-3) + 2px);
}
.stat-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.stat-card-value {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.stat-card-label {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) var(--space-3);
  color: var(--color-text-muted);
  text-align: center;
  gap: var(--space-2);
}
.empty-state-icon {
  font-size: 48px;
  opacity: .4;
}
.empty-state-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.empty-state-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* Ripple effect */
.ripple {
  position: relative;
  overflow: hidden;
}
.ripple-wave {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.3);
  transform: scale(0);
  animation: ripple-anim .5s linear;
  pointer-events: none;
}
@keyframes ripple-anim {
  to { transform: scale(4); opacity: 0; }
}

/* Animations */
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .5; }
}
@keyframes slide-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slide-down {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-slide-up   { animation: slide-up   var(--duration-base) var(--ease-out) both; }
.animate-slide-down { animation: slide-down var(--duration-base) var(--ease-out) both; }

/* Stagger children */
.stagger > * { animation: slide-up var(--duration-base) var(--ease-out) both; }
.stagger > *:nth-child(1) { animation-delay: 0ms; }
.stagger > *:nth-child(2) { animation-delay: 60ms; }
.stagger > *:nth-child(3) { animation-delay: 120ms; }
.stagger > *:nth-child(4) { animation-delay: 180ms; }
.stagger > *:nth-child(5) { animation-delay: 240ms; }
.stagger > *:nth-child(6) { animation-delay: 300ms; }

/* ============================================================
   Responsive Helpers
   ============================================================ */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
  .show-mobile { display: flex !important; }
}
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
  .show-desktop { display: flex !important; }
}