/* --- Variables (Theming Ready) --- */
:root {
  /* Base Hue (Default: Lively Green) */
  --hue: 174;

  /* Generate Colors from Hue */
  --primary-sat: 55%; --primary-lig: 62%;
  --success-sat: 50%; --success-lig: 68%;
  --warning-sat: 95%; --warning-lig: 65%;
  --danger-sat: 85%; --danger-lig: 60%;

  --primary:   hsl(var(--hue), var(--primary-sat), var(--primary-lig));
  --success:   hsl(calc(var(--hue) - 20), var(--success-sat), var(--success-lig));
  --warning:   hsl(45, var(--warning-sat), var(--warning-lig));
  --danger:    hsl(5, var(--danger-sat), var(--danger-lig));

  /* Text and Glass - Improved contrast */
  --text-base-lig: 18%;
  --text:      hsl(var(--hue), 12%, var(--text-base-lig));
  --text-light: hsl(var(--hue), 10%, calc(var(--text-base-lig) + 28%)); /* Improved: 28% instead of 35% */

  --glass-lightness: 97%;
  --glass-alpha: 0.15;
  --glass-bg:  hsla(var(--hue), 25%, var(--glass-lightness), var(--glass-alpha));
  --glass-bg-header: hsla(var(--hue), 30%, var(--glass-lightness), calc(var(--glass-alpha) + 0.05));
  --glass-bg-content: hsla(var(--hue), 20%, var(--glass-lightness), calc(var(--glass-alpha) + 0.08));
  --glass-bg-card: hsla(var(--hue), 20%, var(--glass-lightness), calc(var(--glass-alpha) - 0.02)); /* Base for gradient */
  --glass-border: hsla(var(--hue), 20%, calc(var(--glass-lightness) - 8%), 0.25);
  --glass-border-light: hsla(var(--hue), 15%, calc(var(--glass-lightness) - 5%), 0.15);

  /* Other variables */
  --blur-intensity: 14px;
  --border-radius: 16px;
  --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.08), 0 2px 12px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12), 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 4px 16px hsla(var(--hue), 30%, calc(var(--text-base-lig) - 10%), 0.06);
  --scrollbar-width: 8px;
  --theme-transition-duration: 0.5s;
}

/* Dark Mode Auto-Switching */
@media (prefers-color-scheme: dark) {
  :root {
    --hue: 200;
    --text-base-lig: 85%; /* Slightly reduced for better contrast */
    --glass-lightness: 18%;
    --glass-alpha: 0.22; /* Increased for better visibility */
    --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.3), 0 2px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4), 0 4px 20px rgba(0, 0, 0, 0.25);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
  }
}

/* --- Global Styles & Dynamic Background --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { color-scheme: light dark; }

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: hsl(var(--hue), 30%, 12%);
  padding: 12px 24px;
  border-radius: 0 0 12px 12px;
  font-weight: 600;
  text-decoration: none;
  z-index: 10000;
  transition: top 0.3s ease;
}
.skip-link:focus {
  top: 0;
  outline: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

body {
    font-family: "LXGW WenKai Screen", ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif !important;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column;
    background:
      radial-gradient(circle at 15% 10%, hsla(var(--hue), 75%, 75%, 0.45), transparent 32rem),
      radial-gradient(circle at 88% 80%, hsla(calc(var(--hue) + 45), 75%, 72%, 0.32), transparent 34rem),
      linear-gradient(145deg, hsl(var(--hue), 38%, 92%), hsl(calc(var(--hue) + 35), 36%, 88%));
    position: relative; color: var(--text); text-rendering: optimizeLegibility; padding: 20px;
    transition: color var(--theme-transition-duration) ease, background-color var(--theme-transition-duration) ease;
    overflow-x: hidden; /* Prevent horizontal scrollbar from gradient */
}
body.modal-open { overflow: hidden; }
/* Dynamic background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg,
    hsla(var(--hue), 50%, 75%, 0.12),
    hsla(calc(var(--hue) + 40), 60%, 80%, 0.08),
    hsla(calc(var(--hue) + 80), 55%, 78%, 0.06));
  background-size: 400% 400%;
  animation: gradientMove 25s ease infinite;
  z-index: -1;
  transition: background var(--theme-transition-duration) ease;
}
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  25% { background-position: 50% 100%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 50% 0%; }
  100% { background-position: 0% 50%; }
}

/* Ensure external UI elements don't get unwanted backdrop filter */
#waifu, .js-cursor-container { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; }

/* Top page loader (used by script.js) */
.page-loader { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 1100; opacity: 0; transform: translateY(-100%); transition: opacity 0.2s ease, transform 0.25s ease; pointer-events: none; }
.page-loader.loading { opacity: 1; transform: translateY(0); }
.loader-bar { height: 100%; width: 0%; background: linear-gradient(90deg, hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.25), var(--primary), hsla(calc(var(--hue) + 30), var(--primary-sat), calc(var(--primary-lig) + 5%), 0.85)); border-radius: 0 999px 999px 0; box-shadow: 0 0 0 1px hsla(var(--hue), 20%, calc(var(--glass-lightness) - 20%), 0.12), 0 6px 18px hsla(var(--hue), 30%, 10%, 0.12); transition: width 0.35s cubic-bezier(0.2, 0.9, 0.2, 1); }

.container {
    flex: 1; width: 95%; max-width: 1200px; margin: 2rem auto; border-radius: var(--border-radius);
    overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--glass-border);
    background: var(--glass-bg); backdrop-filter: blur(var(--blur-intensity)); -webkit-backdrop-filter: blur(var(--blur-intensity));
    display: flex; flex-direction: column;
    transition: background var(--theme-transition-duration) ease,
                border-color var(--theme-transition-duration) ease,
                box-shadow var(--theme-transition-duration) ease,
                transform 0.3s ease;
}

.container:hover {
    box-shadow: var(--shadow-lg), 0 0 0 1px hsla(var(--hue), 40%, 70%, 0.2);
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: var(--scrollbar-width); }
::-webkit-scrollbar-track { background: hsla(var(--hue), 10%, 50%, 0.1); border-radius: calc(var(--scrollbar-width) / 2); }
::-webkit-scrollbar-thumb { background: hsla(var(--hue), var(--primary-sat), calc(var(--primary-lig) - 10%), 0.6); border-radius: calc(var(--scrollbar-width) / 2); transition: background var(--theme-transition-duration) ease; }
::-webkit-scrollbar-thumb:hover { background: hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.8); }

.header {
    padding: 2.5rem 2rem; text-align: center;
    background: var(--glass-bg-header);
    backdrop-filter: blur(var(--blur-intensity));
    -webkit-backdrop-filter: blur(var(--blur-intensity));
    border-bottom: 1px solid var(--glass-border);
    position: relative;
    transition: background var(--theme-transition-duration) ease,
                border-color var(--theme-transition-duration) ease;
}

/* 添加装饰性光效 */
.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg,
        transparent,
        var(--primary),
        transparent);
    opacity: 0.5;
    filter: blur(2px);
}

.header h1 {
    font-weight: 700; color: var(--text);
    margin-bottom: 1rem;
    font-size: clamp(2rem, 5vw, 2.8rem);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    letter-spacing: -0.02em;
    transition: color var(--theme-transition-duration) ease;
    background: linear-gradient(135deg,
        var(--text),
        hsl(var(--hue), 40%, calc(var(--text-base-lig) + 25%)),
        var(--primary));
    background-size: 200% 200%;
    animation: titleGradient 6s ease infinite;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes titleGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.header p {
    color: var(--text-light);
    font-size: clamp(0.9rem, 2vw, 1rem);
    font-weight: 500;
    transition: color var(--theme-transition-duration) ease;
}

.header p #task-count-display {
    font-weight: 700;
    font-size: 1.25em;
    color: var(--primary);
    padding: 4px 12px;
    background: linear-gradient(135deg,
        hsla(var(--hue), 50%, 70%, 0.2),
        hsla(var(--hue), 40%, 60%, 0.12));
    border-radius: 10px;
    border: 1px solid hsla(var(--hue), 40%, 70%, 0.25);
    box-shadow: 0 2px 8px hsla(var(--hue), 40%, 50%, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: countPulse 3s ease-in-out infinite;
}

.header p #task-count-display:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 16px hsla(var(--hue), 50%, 50%, 0.25);
}

@keyframes countPulse {
    0%, 100% { box-shadow: 0 2px 8px hsla(var(--hue), 40%, 50%, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.2); }
    50% { box-shadow: 0 2px 16px hsla(var(--hue), 50%, 55%, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
}

.content-area {
     flex: 1; padding: 1.5rem; background: var(--glass-bg-content); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); overflow-y: auto;
     transition: background var(--theme-transition-duration) ease;
}

/* Tabs */
.tab-container { margin-bottom: 20px; }
.tab-buttons { display: flex; gap: 5px; margin-bottom: 20px; border-bottom: 1px solid var(--glass-border-light); transition: border-color var(--theme-transition-duration) ease; }
.tab-btn { background: none; border: none; padding: 12px 18px; cursor: pointer; font-size: 1em; color: var(--text-light); position: relative; transition: color var(--theme-transition-duration) ease; }
.tab-btn::after { content: ''; position: absolute; left: 50%; bottom: 0; width: 0; height: 3px; background: var(--primary); border-radius: 2px; transition: width 0.3s ease, left 0.3s ease, background-color var(--theme-transition-duration) ease; }
.tab-btn:hover { color: var(--primary); }
.tab-btn.active { color: var(--primary); font-weight: 600; }
.tab-btn.active::after { width: 80%; left: 10%; }
.tab-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.25); border-radius: 10px; }
.tab-content { display: none; padding-top: 10px;}
.tab-content.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* Toolbar */
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; }

/* Skeleton Loading */
.skeleton-list { display: grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap: 15px; margin-top: 20px; transition: opacity 0.3s ease; }
.skeleton-card { height: 240px; border-radius:var(--border-radius); background: var(--glass-bg-card); position: relative; overflow: hidden; border: 1px solid var(--glass-border); transition: background var(--theme-transition-duration) ease, border-color var(--theme-transition-duration) ease; }
.skeleton-card::after { content: ""; position: absolute; top:0; left:-150%; width: 100%; height:100%; background: linear-gradient(90deg, transparent, hsla(var(--hue), 15%, var(--glass-lightness), calc(var(--glass-alpha) + 0.08)), transparent); animation: shimmer 1.5s infinite cubic-bezier(0.4, 0.0, 0.2, 1); transition: background var(--theme-transition-duration) ease; }
@keyframes shimmer { to { transform: translateX(250%); } }

/* Task List */
#task-list { margin-top: 20px; display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.task-item {
    background: transparent;
    border: 1px solid var(--glass-border);
    border-left-width: 4px;
    border-radius: var(--border-radius);
    padding: 0;
    display: flex; flex-direction: column; border-left-color: var(--primary);
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.7s cubic-bezier(0.34, 1.56, 0.64, 1),
                transform 0.7s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                border-left-color 0.3s ease,
                background var(--theme-transition-duration) ease,
                border-color var(--theme-transition-duration) ease;
    will-change: opacity, transform;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06),
                0 1px 4px rgba(0, 0, 0, 0.04),
                inset 0 0 0 1px hsla(var(--hue), 30%, 100%, 0.3);
    overflow: hidden;
}
/* 添加光泽效果 */
.task-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    hsla(var(--hue), 60%, 80%, 0.5),
    transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}
/* Fine inner border (ensure it doesn't block clicks) */
.task-item::after {
  content: '';
  position: absolute;
  inset: 1px;
  border: 1px solid hsla(var(--hue), 40%, calc(100% - var(--text-base-lig)), 0.15);
  border-radius: calc(var(--border-radius) - 1px);
  pointer-events: none; /* Should allow clicks through */
  transition: border-color var(--theme-transition-duration) ease;
}
.task-item.in-view { opacity: 1; transform: translateY(0); }

/* Inner Wrapper for Content and Background - 已移动到文件末尾优化 */

.task-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12),
                0 8px 24px rgba(0, 0, 0, 0.08),
                inset 0 0 0 1px hsla(var(--hue), 50%, 100%, 0.6),
                0 0 0 1px hsla(var(--hue), 60%, 70%, 0.3);
}

.task-item:hover::before {
    opacity: 1;
}

/* 悬停时边框发光效果 */
.task-item:hover::after {
    border-color: hsla(var(--hue), 50%, 70%, 0.3);
    box-shadow: inset 0 0 20px hsla(var(--hue), 50%, 70%, 0.1);
}
/* Status colors */
.task-item.overdue {
    border-left-color: var(--danger);
    animation: pulseGlow 2s ease-in-out infinite;
}
.task-item.warning {
    border-left-color: var(--warning);
}
.task-item.normal {
    border-left-color: var(--primary);
}
.task-item.date-today {
    border-left-color: hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) + 15%));
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06),
                0 1px 4px rgba(0, 0, 0, 0.04),
                inset 0 0 0 1px hsla(var(--hue), 30%, 100%, 0.3),
                0 0 20px hsla(var(--hue), 60%, 70%, 0.3);
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06),
                0 1px 4px rgba(0, 0, 0, 0.04),
                inset 0 0 0 1px hsla(var(--hue), 30%, 100%, 0.3),
                0 0 15px hsla(5, 85%, 60%, 0.4);
  }
  50% {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06),
                0 1px 4px rgba(0, 0, 0, 0.04),
                inset 0 0 0 1px hsla(var(--hue), 30%, 100%, 0.3),
                0 0 25px hsla(5, 85%, 60%, 0.6);
  }
}

/* Task Category Tag - 已移动到文件末尾优化 */
.task-item.overdue .task-category-tag { background: var(--danger); }
.task-item.warning .task-category-tag { background: var(--warning); }
.task-item.date-today .task-category-tag { background: hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) + 10%)); }

.task-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 15px; padding-bottom: 10px; border-bottom: 1px dashed var(--glass-border-light); transition: border-color var(--theme-transition-duration) ease; }
.task-title { font-size: clamp(1.1rem, 2.5vw, 1.25rem); font-weight: 700; color: var(--text); word-break: break-word; flex-grow: 1; transition: color var(--theme-transition-duration) ease; }
.task-status {
    font-size: 0.85em;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    white-space: nowrap;
    color: white;
    background: linear-gradient(135deg, var(--primary), hsl(var(--hue), calc(var(--primary-sat) + 10%), calc(var(--primary-lig) + 5%)));
    box-shadow: 0 2px 8px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.task-status svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}
.task-status:hover {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 4px 12px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.4);
}
.task-status.status-overdue {
    background: linear-gradient(135deg, var(--danger), hsl(5, calc(var(--danger-sat) + 10%), calc(var(--danger-lig) + 8%)));
    box-shadow: 0 2px 8px hsla(5, var(--danger-sat), var(--danger-lig), 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    animation: statusPulse 1.5s ease-in-out infinite;
}
@keyframes statusPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}
.task-status.status-warning {
    background: linear-gradient(135deg, var(--warning), hsl(45, calc(var(--warning-sat) + 5%), calc(var(--warning-lig) + 8%)));
    color: hsl(45, 40%, 18%);
    box-shadow: 0 2px 8px hsla(45, var(--warning-sat), var(--warning-lig), 0.35),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.task-status.status-normal {
    background: linear-gradient(135deg, var(--primary), hsl(var(--hue), calc(var(--primary-sat) + 10%), calc(var(--primary-lig) + 8%)));
}
.task-status.status-date-today {
    background: linear-gradient(135deg,
        hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) + 10%)),
        hsl(var(--hue), calc(var(--primary-sat) + 15%), calc(var(--primary-lig) + 18%)));
    color: hsl(var(--hue), 30%, 15%);
    box-shadow: 0 2px 12px hsla(var(--hue), 60%, 60%, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.task-details { display: flex; flex-direction: column; gap: 8px; font-size: 0.9em; color: var(--text-light); transition: color var(--theme-transition-duration) ease; }
.detail-row { display: flex; justify-content: space-between; gap: 10px; word-break: break-word; font-size: clamp(0.85rem, 1.8vw, 0.95rem); padding: 6px 0; }
.detail-label { font-weight: 700; color: hsl(var(--hue), 15%, calc(var(--text-base-lig) + 15%)) !important; flex-shrink: 0; min-width: 90px; text-align: left; transition: color var(--theme-transition-duration) ease; }
.detail-value { flex-grow: 1; text-align: right; color: var(--text) !important; font-weight: 500; }
.detail-row.full-width { flex-direction: column; gap: 5px; border-top: 1px dashed var(--glass-border-light); padding-top: 10px; margin-top: 5px; transition: border-color var(--theme-transition-duration) ease; }
.detail-row.full-width .detail-label { width: auto; text-align: left; font-weight: 600; }
.detail-row.full-width .detail-value { text-align: left; font-style: italic; }

/* Collapsible Message Preview */
.message-preview { position: relative; max-height: 60px; overflow: hidden; cursor: pointer; transition: max-height 0.35s ease-in-out; font-style: normal; color: var(--text); background: hsla(var(--hue), 10%, 50%, 0.08); padding: 8px; border-radius: 6px; word-break: break-word; white-space: pre-wrap; padding-bottom: 20px; }
.message-preview.expanded { max-height: 500px; }
.message-preview::after { content: '点击展开'; position: absolute; bottom: 4px; right: 8px; background: hsla(var(--hue), 10%, calc(var(--text-base-lig) + 10%), 0.1); color: var(--text-light); padding: 2px 6px; font-size: 0.75em; border-radius: 4px; opacity: 0.8; transition: opacity 0.2s ease; }
.message-preview:hover::after { opacity: 1; }
.message-preview.expanded::after { content: '点击收起'; }
.message-preview:not(.expanded)[data-short="true"]::after { display: none; }

/* Task Progress Bar */
.progress-bar-container {
    height: 8px;
    width: 100%;
    background: hsla(var(--hue), 15%, 50%, 0.15);
    border-radius: 999px;
    margin-top: 10px;
    margin-bottom: 5px;
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: background-color var(--theme-transition-duration) ease;
}
.progress-bar {
    height: 100%;
    background: linear-gradient(90deg,
        var(--primary),
        hsl(var(--hue), calc(var(--primary-sat) + 15%), calc(var(--primary-lig) + 15%)));
    border-radius: 999px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15),
                inset 0 1px 0 hsla(var(--hue), 60%, 80%, 0.4);
    transition: width 0.8s cubic-bezier(0.645, 0.045, 0.355, 1),
                background-color var(--theme-transition-duration) ease;
    position: relative;
    overflow: hidden;
}

/* 添加进度条光泽动画 */
.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent);
  animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
  0% { left: -100%; }
  50%, 100% { left: 100%; }
}

.task-item.overdue .progress-bar {
    background: linear-gradient(90deg,
        var(--danger),
        hsl(5, var(--danger-sat), calc(var(--danger-lig) + 15%)));
}
.task-item.warning .progress-bar {
    background: linear-gradient(90deg,
        var(--warning),
        hsl(45, var(--warning-sat), calc(var(--warning-lig) + 15%)));
}
.task-item.date-today .progress-bar {
    background: linear-gradient(90deg,
        hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) + 15%)),
        hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) + 25%)));
}

.task-actions {
    display: flex; flex-wrap: wrap; gap: 10px; margin-top: 15px; padding-top: 15px;
    border-top: 1px dashed var(--glass-border-light); justify-content: flex-end;
    transition: border-color var(--theme-transition-duration) ease;
    position: relative; /* Ensure z-index takes effect */
    z-index: 3; /* Ensure buttons are definitely above other content within inner */
}

/* Explicitly ensure buttons are clickable */
.task-actions .btn {
    position: relative; /* Needed for z-index */
    z-index: 4; /* Highest z-index within the card */
    pointer-events: auto !important; /* Force pointer events */
}


/* 已移动到文件末尾优化 */
.empty-state .btn { margin-top: 18px; position: relative; z-index: 1; }
.empty-state.error-state { border-color: hsla(0, var(--danger-sat), calc(var(--danger-lig) - 10%), 0.25); background-color: hsla(0, var(--danger-sat), calc(var(--danger-lig) - 15%), 0.07); }
.empty-state .error-title { color: hsl(0, var(--danger-sat), calc(var(--danger-lig) - 18%)); font-weight: 650; letter-spacing: 0.02em; }
.empty-state .loading { margin-top: 15px; border-top-color: var(--primary); transition: border-top-color var(--theme-transition-duration) ease;}
#loader-container { display: flex; justify-content: center; align-items: center; min-height: 60px; margin-top: 15px; }
#loader { width: 50px; height: 50px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    color: white; border: none; padding: 12px 22px; border-radius: 14px;
    cursor: pointer;
    font-family: "LXGW WenKai Screen", ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif !important;
    font-size: 0.95em; font-weight: 600; text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12),
                0 2px 6px rgba(0, 0, 0, 0.08),
                inset 0 1px 0 rgba(255, 255, 255, 0.25),
                inset 0 -1px 0 rgba(0, 0, 0, 0.05);
    text-decoration: none; position: relative; overflow: hidden;
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: transform, box-shadow;
    backdrop-filter: blur(4px);
}
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.5s ease;
}
.btn:hover::before {
    left: 100%;
}
.btn:hover {
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18),
                0 4px 12px rgba(0, 0, 0, 0.12),
                inset 0 1px 0 rgba(255, 255, 255, 0.35),
                0 0 0 1px rgba(255, 255, 255, 0.1);
}
.btn:active {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.4),
                0 3px 12px rgba(0, 0, 0, 0.12);
}
.btn:disabled {
    background: hsla(var(--hue), 10%, 50%, 0.25);
    color: hsla(var(--hue), 10%, 50%, 0.6);
    cursor: not-allowed; box-shadow: none; opacity: 0.6; transform: none;
}
.btn .ripple {
    position: absolute; border-radius: 50%;
    background: hsla(var(--hue), 100%, 98%, 0.6);
    transform: scale(0);
    animation: ripple-effect 0.6s ease-out;
    pointer-events: none; will-change: transform, opacity;
}
@keyframes ripple-effect { to { transform: scale(4); opacity: 0; } }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), hsl(var(--hue), calc(var(--primary-sat) + 5%), calc(var(--primary-lig) + 8%)));
    color: hsl(var(--hue), 30%, 12%) !important;
}
.btn-primary:hover {
    background: linear-gradient(135deg, hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) - 3%)), hsl(var(--hue), calc(var(--primary-sat) + 5%), calc(var(--primary-lig) + 5%)));
}
.btn-success {
    background: linear-gradient(135deg, var(--success), hsl(calc(var(--hue) - 20), calc(var(--success-sat) + 5%), calc(var(--success-lig) + 8%)));
    color: hsl(var(--hue), 20%, 15%);
}
.btn-success:hover {
    background: linear-gradient(135deg, hsl(calc(var(--hue) - 20), var(--success-sat), calc(var(--success-lig) - 5%)), var(--success));
}
.btn-warning {
    background: linear-gradient(135deg, var(--warning), hsl(45, calc(var(--warning-sat) + 5%), calc(var(--warning-lig) + 8%)));
    color: hsl(45, 30%, 20%);
}
.btn-warning:hover {
    background: linear-gradient(135deg, hsl(45, var(--warning-sat), calc(var(--warning-lig) - 5%)), var(--warning));
}
.btn-danger {
    background: linear-gradient(135deg, var(--danger), hsl(5, calc(var(--danger-sat) + 5%), calc(var(--danger-lig) + 8%)));
    color: white;
}
.btn-danger:hover {
    background: linear-gradient(135deg, hsl(5, var(--danger-sat), calc(var(--danger-lig) - 5%)), var(--danger));
}
.btn-secondary {
    background: linear-gradient(135deg, hsla(var(--hue), 15%, 50%, 0.25), hsla(var(--hue), 12%, 55%, 0.2));
    color: var(--text);
    border: 1px solid var(--glass-border);
}
.btn-secondary:hover {
    background: linear-gradient(135deg, hsla(var(--hue), 18%, 50%, 0.35), hsla(var(--hue), 15%, 55%, 0.3));
}
.btn-sm { padding: 8px 16px; font-size: 0.88em; border-radius: 10px; min-height: 40px; }

/* Modal */
.modal { visibility: hidden; opacity: 0; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: hsla(var(--hue), 30%, 5%, 0.5); overflow: auto; padding: 20px; backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); transition: opacity 0.3s ease, visibility 0.3s ease, background-color var(--theme-transition-duration) ease; }
.modal.show { visibility: visible; opacity: 1; }
.modal-content { background-color: var(--glass-bg-content); margin: 5% auto; padding: 30px; border-radius: var(--border-radius); width: 95%; max-width: 550px; box-shadow: var(--shadow-md); position: relative; border: 1px solid var(--glass-border); backdrop-filter: blur(var(--blur-intensity)); -webkit-backdrop-filter: blur(var(--blur-intensity)); opacity: 0; transform: scale(0.9); transition: background var(--theme-transition-duration) ease, border-color var(--theme-transition-duration) ease, box-shadow var(--theme-transition-duration) ease; }
.modal-content.modal-sm { max-width: 400px; padding: 24px; }
.modal.show .modal-content { animation: modalEnter 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }
@keyframes modalEnter { from { opacity: 0; transform: scale(0.9) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; padding-bottom: 15px; border-bottom: 1px solid var(--glass-border-light); transition: border-color var(--theme-transition-duration) ease; }
.modal-header h2 { margin-bottom: 0; font-size: 1.6em; color: var(--text); transition: color var(--theme-transition-duration) ease; }
.modal-body { margin-bottom: 20px; }
.modal-body p { color: var(--text); line-height: 1.6; }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; padding-top: 15px; border-top: 1px solid var(--glass-border-light); }
.close { color: var(--text-light); font-size: 28px; font-weight: bold; cursor: pointer; line-height: 1; background: none; border: none; padding: 5px; border-radius: 10px; transition: color 0.2s ease, background-color 0.2s ease; }
.close:hover { color: var(--danger); }
.close:focus-visible { outline: none; background-color: hsla(var(--hue), 10%, 50%, 0.12); box-shadow: 0 0 0 3px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.18); }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 0.95em; color: hsl(var(--hue), 15%, calc(var(--text-base-lig) + 10%)) !important; transition: color var(--theme-transition-duration) ease; }
.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    font-size: 1em;
    background: linear-gradient(135deg,
        hsla(var(--hue), 18%, var(--glass-lightness), calc(var(--glass-alpha) + 0.05)),
        hsla(var(--hue), 12%, var(--glass-lightness), calc(var(--glass-alpha) + 0.02)));
    color: var(--text);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04);
}
.form-control:hover {
    border-color: hsla(var(--hue), 40%, 60%, 0.4);
    background: linear-gradient(135deg,
        hsla(var(--hue), 20%, var(--glass-lightness), calc(var(--glass-alpha) + 0.08)),
        hsla(var(--hue), 15%, var(--glass-lightness), calc(var(--glass-alpha) + 0.05)));
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.2),
                inset 0 2px 4px rgba(0, 0, 0, 0.02),
                0 4px 12px hsla(var(--hue), 40%, 50%, 0.1);
    background: linear-gradient(135deg,
        hsla(var(--hue), 22%, var(--glass-lightness), calc(var(--glass-alpha) + 0.1)),
        hsla(var(--hue), 18%, var(--glass-lightness), calc(var(--glass-alpha) + 0.06)));
}
textarea.form-control { min-height: 100px; resize: vertical; }
select.form-control {
  appearance: none;
  -webkit-appearance: none;
  /* Default arrow color, will be updated by JS */
  background-image: url('data:image/svg+xml;utf8,<svg fill="%23333333" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>'),
    linear-gradient(135deg,
      hsla(var(--hue), 18%, var(--glass-lightness), calc(var(--glass-alpha) + 0.05)),
      hsla(var(--hue), 12%, var(--glass-lightness), calc(var(--glass-alpha) + 0.02)));
  background-repeat: no-repeat, no-repeat;
  background-position: right 12px center, center;
  background-size: 16px 16px, 100% 100%;
  padding-right: 40px;
}
select.form-control:hover {
  background-image: url('data:image/svg+xml;utf8,<svg fill="%23333333" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>'),
    linear-gradient(135deg,
      hsla(var(--hue), 20%, var(--glass-lightness), calc(var(--glass-alpha) + 0.08)),
      hsla(var(--hue), 15%, var(--glass-lightness), calc(var(--glass-alpha) + 0.05)));
  background-repeat: no-repeat, no-repeat;
  background-position: right 12px center, center;
  background-size: 16px 16px, 100% 100%;
}
select.form-control:focus {
  background-image: url('data:image/svg+xml;utf8,<svg fill="%23333333" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>'),
    linear-gradient(135deg,
      hsla(var(--hue), 22%, var(--glass-lightness), calc(var(--glass-alpha) + 0.1)),
      hsla(var(--hue), 18%, var(--glass-lightness), calc(var(--glass-alpha) + 0.06)));
  background-repeat: no-repeat, no-repeat;
  background-position: right 12px center, center;
  background-size: 16px 16px, 100% 100%;
}
.form-check { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; padding: 10px 14px; background: hsla(var(--hue), 15%, 50%, 0.06); border-radius: 10px; transition: all 0.25s ease; cursor: pointer; }
.form-check:hover { background: hsla(var(--hue), 20%, 50%, 0.1); transform: translateX(4px); }
.form-check label { margin-bottom: 0; font-weight: 500; cursor: pointer; color: var(--text) !important; transition: color var(--theme-transition-duration) ease; flex: 1; }
.form-check input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid hsla(var(--hue), 30%, 60%, 0.4);
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    background: hsla(var(--hue), 15%, var(--glass-lightness), 0.2);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}
.form-check input[type="checkbox"]:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.15);
}
.form-check input[type="checkbox"]:checked {
    background: linear-gradient(135deg, var(--primary), hsl(var(--hue), calc(var(--primary-sat) + 10%), calc(var(--primary-lig) + 8%)));
    border-color: var(--primary);
    box-shadow: 0 2px 8px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.35);
}
.form-check input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2.5px 2.5px 0;
    transform: rotate(45deg);
    animation: checkmark 0.2s ease-out;
}
@keyframes checkmark {
    from { transform: rotate(45deg) scale(0); opacity: 0; }
    to { transform: rotate(45deg) scale(1); opacity: 1; }
}
#task-form button[type="submit"] { width: 100%; padding: 12px; font-size: 1em; }

/* Messages & Loading */
#message { margin-top: 20px; padding: 12px 15px; border-radius: var(--border-radius); text-align: center; display: none; animation: fadeIn 0.3s ease; font-size: 0.9em; font-weight: 500; transition: background-color var(--theme-transition-duration) ease, color var(--theme-transition-duration) ease, border-color var(--theme-transition-duration) ease; }
.message-success { background-color: hsla(calc(var(--hue) - 20), var(--success-sat), calc(var(--success-lig) - 5%), 0.2); color: hsl(calc(var(--hue) - 20), calc(var(--success-sat) + 10%), calc(var(--success-lig) - 30%)); border: 1px solid hsla(calc(var(--hue) - 20), var(--success-sat), calc(var(--success-lig) - 5%), 0.3); }
.message-error { background-color: hsla(0, var(--danger-sat), calc(var(--danger-lig) - 5%), 0.15); color: hsl(0, var(--danger-sat), calc(var(--danger-lig) - 15%)); border: 1px solid hsla(0, var(--danger-sat), calc(var(--danger-lig) - 5%), 0.2); }
.message-info { background-color: hsla(var(--hue), 10%, 50%, 0.1); color: var(--text); border: 1px solid hsla(var(--hue), 10%, 50%, 0.15); }
.message-warning { background-color: hsla(50, var(--warning-sat), calc(var(--warning-lig) - 10%), 0.15); color: hsl(50, var(--warning-sat), calc(var(--warning-lig) - 40%)); border: 1px solid hsla(50, var(--warning-sat), calc(var(--warning-lig) - 10%), 0.2); }
.loading { display: inline-block; width: 24px; height: 24px; border: 3px solid hsla(var(--hue), 10%, 50%, 0.2); border-radius: 50%; border-top-color: var(--primary); animation: spin 1s ease-in-out infinite; vertical-align: middle; transition: border-color var(--theme-transition-duration) ease, border-top-color var(--theme-transition-duration) ease; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
.footer { text-align: center; padding: 1.5rem; background: var(--glass-bg-header); color: var(--text-light); margin-top: auto; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); border-top: 1px solid var(--glass-border); font-size: 0.9rem; transition: background var(--theme-transition-duration) ease, color var(--theme-transition-duration) ease, border-color var(--theme-transition-duration) ease; }
.footer a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
.footer a:hover { color: hsl(var(--hue), var(--primary-sat), calc(var(--primary-lig) + 5%)); text-decoration: underline; }

/* Theme Switcher */
.theme-switcher {
    position: fixed; bottom: 24px; right: 24px;
    display: flex; gap: 10px; z-index: 100;
    background: hsla(var(--hue), 20%, var(--glass-lightness), calc(var(--glass-alpha) + 0.1));
    padding: 10px 12px; border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1),
                0 1px 4px rgba(0, 0, 0, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    transition: all var(--theme-transition-duration) ease,
                transform 0.3s ease;
}

.theme-switcher:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15),
                0 2px 8px rgba(0, 0, 0, 0.08),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.theme-option {
    width: 28px; height: 28px; border-radius: 50%;
    cursor: pointer;
    border: 2px solid hsla(0, 0%, 100%, 0.4);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    appearance: none; -webkit-appearance: none;
    background-clip: padding-box; padding: 0;
}

.theme-option:hover {
    transform: scale(1.2);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.25),
                inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.theme-option.active {
    transform: scale(1.15);
    border-color: white; border-width: 3px;
    box-shadow: 0 0 0 3px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.5),
                0 4px 12px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.theme-option:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px hsla(var(--hue), var(--primary-sat), var(--primary-lig), 0.4),
                0 3px 12px rgba(0, 0, 0, 0.25);
}

/* Responsiveness */
@media (max-width: 768px) {
    .container { width: 100%; margin: 1.5rem auto; }
    .header { padding: 2rem 1.5rem; }
    .header h1 { font-size: clamp(1.8rem, 6vw, 2.4rem); }
    .content-area { padding: 1.2rem; }
    #task-list { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
    .task-item-inner { padding: 18px; }
    .theme-switcher { bottom: 16px; right: 16px; padding: 8px 10px; gap: 8px; }
    .theme-option { width: 24px; height: 24px; }
    .modal-content { width: 95%; margin: 10% auto; padding: 24px; }
    .modal-header h2 { font-size: 1.5em; }
}

@media (max-width: 480px) {
    body { padding: 12px; }
    .container { margin: 1rem auto; border-radius: 14px; }
    .header { padding: 1.5rem 1rem; }
    .header h1 { font-size: clamp(1.6rem, 7vw, 2rem); }
    .content-area { padding: 1rem; }
    #task-list { grid-template-columns: 1fr; gap: 16px; }
    .task-item-inner { padding: 16px; }
    .detail-row { flex-direction: column; align-items: flex-start; gap: 4px; }
    .detail-label { width: auto; text-align: left; }
    .detail-value { text-align: left; }
    .task-actions { justify-content: space-between; gap: 8px; }
    .task-actions .btn { flex: 1; min-width: 0; }
    .btn { padding: 12px 16px; font-size: 0.9em; min-height: 44px; }
    .btn-sm { padding: 10px 14px; font-size: 0.85em; min-height: 44px; }
    .modal-content { padding: 18px; }
    .modal-content.modal-sm { padding: 18px; }
    .modal-header h2 { font-size: 1.3em; }
    .modal-footer { flex-direction: column; gap: 10px; }
    .modal-footer .btn { width: 100%; }
    .theme-switcher { bottom: 12px; right: 12px; padding: 8px 10px; gap: 8px; }
    .theme-option { width: 44px; height: 44px; }
    .empty-state { padding: 60px 20px; }
    .form-check { padding: 12px 14px; min-height: 44px; }
    .form-check input[type="checkbox"] { width: 24px; height: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  body::before { animation: none !important; }
  .btn .ripple { animation: none !important; }
}

/* Screen Reader Only */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0; }

/* 通知方式图标样式 - Using SVG instead of emoji */
.notification-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: linear-gradient(135deg,
    hsla(var(--hue), 25%, 50%, 0.12),
    hsla(var(--hue), 20%, 60%, 0.08));
  border: 1px solid hsla(var(--hue), 20%, 70%, 0.2);
  border-radius: 8px;
  font-size: 0.85em;
  margin-right: 6px;
  margin-bottom: 4px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.notification-icon:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
  background: linear-gradient(135deg,
    hsla(var(--hue), 30%, 50%, 0.18),
    hsla(var(--hue), 25%, 60%, 0.12));
}

.notification-icon svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.notification-icon.telegram svg {
  fill: #0088cc;
}

.notification-icon.email svg {
  fill: #ea4335;
}

.notification-icon.wechat svg {
  fill: #07c160;
}

/* 信息卡片背景渐变优化 */
.task-item-inner {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    height: 100%;
    background: linear-gradient(155deg,
        hsla(var(--hue), 25%, var(--glass-lightness), calc(var(--glass-alpha) + 0.08)),
        hsla(var(--hue), 20%, calc(var(--glass-lightness) - 1%), calc(var(--glass-alpha) + 0.05)),
        hsla(var(--hue), 18%, calc(var(--glass-lightness) - 2%), calc(var(--glass-alpha) + 0.03)));
    border-radius: var(--border-radius);
    transition: background var(--theme-transition-duration) ease;
    position: relative;
    z-index: 2;
}

/* 添加内部微妙光效 */
.task-item-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right,
        hsla(var(--hue), 50%, 80%, 0.1),
        transparent 60%);
    border-radius: var(--border-radius);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.task-item:hover .task-item-inner::before {
    opacity: 1;
}

/* 提升暗色模式下的卡片对比度 */
@media (prefers-color-scheme: dark) {
  .task-item {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
                0 2px 8px rgba(0, 0, 0, 0.3),
                inset 0 0 0 1px hsla(var(--hue), 30%, 40%, 0.2);
  }

  .task-item:hover {
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5),
                0 4px 16px rgba(0, 0, 0, 0.35),
                inset 0 0 0 1px hsla(var(--hue), 40%, 50%, 0.3),
                0 0 0 1px hsla(var(--hue), 50%, 60%, 0.25);
  }

  .glass-border {
    border-color: hsla(var(--hue), 20%, calc(var(--glass-lightness) + 10%), 0.3);
  }

  .container {
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.5),
                0 4px 20px rgba(0, 0, 0, 0.3);
  }

  .btn {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3),
                0 1px 4px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.15);
  }
}

/* 添加微交互动画 */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.task-category-tag {
  height: 5px;
  width: 45%;
  border-radius: 999px;
  margin-bottom: 14px;
  background: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15),
              inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: background-color var(--theme-transition-duration) ease,
              width 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.3s ease;
}

.task-item:hover .task-category-tag {
  width: 55%;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

/* 优化空状态样式 */
.empty-state {
  text-align: center;
  padding: 80px 40px;
  color: var(--text-light);
  border: 2px dashed hsla(var(--hue), 30%, 60%, 0.3);
  border-radius: 20px;
  background: linear-gradient(145deg,
    hsla(var(--hue), 25%, var(--glass-lightness), calc(var(--glass-alpha) + 0.08)),
    hsla(var(--hue), 18%, var(--glass-lightness), calc(var(--glass-alpha) + 0.12)));
  grid-column: 1 / -1;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.04),
              0 4px 20px rgba(0, 0, 0, 0.03);
  position: relative;
  overflow: hidden;
}

.empty-state::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, hsla(var(--hue), 50%, 70%, 0.15), transparent 70%);
  transform: translate(-50%, -50%);
  animation: emptyPulse 4s ease-in-out infinite;
}

@keyframes emptyPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
  50% { transform: translate(-50%, -50%) scale(1.3); opacity: 0.8; }
}

.empty-state p {
  font-size: clamp(1rem, 2.5vw, 1.2em);
  margin-bottom: 12px;
  color: var(--text-light);
  transition: color var(--theme-transition-duration) ease;
  position: relative;
  z-index: 1;
}

.empty-state p:first-of-type {
  font-size: clamp(1.1rem, 3vw, 1.4em);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.empty-state:hover {
  transform: translateY(-4px);
  border-color: hsla(var(--hue), 40%, 55%, 0.45);
  box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.04),
              0 8px 32px rgba(0, 0, 0, 0.06),
              0 0 0 1px hsla(var(--hue), 40%, 70%, 0.15);
}

/* 浮动光斑装饰 */
.floating-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: floatOrb 20s ease-in-out 3; /* Reduced: only play 3 times instead of infinite */
  animation-fill-mode: forwards;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, hsla(var(--hue), 60%, 70%, 0.4), transparent 70%);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
  animation-duration: 25s;
}

.orb-2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, hsla(calc(var(--hue) + 40), 55%, 65%, 0.35), transparent 70%);
  top: 60%;
  right: -8%;
  animation-delay: -5s;
  animation-duration: 22s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, hsla(calc(var(--hue) + 80), 50%, 75%, 0.3), transparent 70%);
  bottom: -5%;
  left: 30%;
  animation-delay: -10s;
  animation-duration: 28s;
}

.orb-4 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, hsla(calc(var(--hue) - 30), 55%, 68%, 0.35), transparent 70%);
  top: 30%;
  left: 60%;
  animation-delay: -15s;
  animation-duration: 20s;
}

@keyframes floatOrb {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(30px, -40px) scale(1.05);
  }
  50% {
    transform: translate(-20px, 30px) scale(0.95);
  }
  75% {
    transform: translate(40px, 20px) scale(1.02);
  }
}

@media (prefers-reduced-motion: reduce) {
  .floating-orbs { display: none; }
}

@media (prefers-color-scheme: dark) {
  .orb { opacity: 0.3; filter: blur(100px); }
}

/* --- IP access gate and allowlist management --- */
[hidden] { display: none !important; }

.access-pending { padding: 0; overflow: hidden; }
.access-pending #app-shell,
.access-pending .theme-switcher,
.access-pending .skip-link,
.access-pending .page-loader { display: none; }

.access-gate {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow-y: auto;
  background:
    radial-gradient(circle at 20% 12%, hsla(var(--hue), 80%, 70%, 0.3), transparent 30rem),
    radial-gradient(circle at 85% 85%, hsla(calc(var(--hue) + 48), 80%, 70%, 0.24), transparent 34rem),
    hsl(var(--hue), 30%, 11%);
}
.access-gate-card {
  width: min(100%, 460px);
  padding: clamp(28px, 6vw, 48px);
  border: 1px solid hsla(var(--hue), 65%, 80%, 0.2);
  border-radius: 28px;
  color: hsl(var(--hue), 20%, 94%);
  background: linear-gradient(145deg, hsla(var(--hue), 30%, 24%, 0.86), hsla(var(--hue), 25%, 13%, 0.94));
  box-shadow: 0 32px 100px rgba(0, 0, 0, 0.45), inset 0 1px rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
}
.security-mark {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin-bottom: 22px;
  border: 1px solid hsla(var(--hue), 80%, 75%, 0.32);
  border-radius: 20px;
  color: hsl(var(--hue), 70%, 72%);
  background: hsla(var(--hue), 70%, 62%, 0.13);
  box-shadow: 0 12px 30px hsla(var(--hue), 80%, 30%, 0.28);
}
.security-mark svg { width: 34px; height: 34px; fill: currentColor; }
.eyebrow { margin: 0 0 6px; color: var(--primary); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.access-gate-card h1 { margin: 0; color: white; font-size: clamp(1.7rem, 6vw, 2.25rem); line-height: 1.18; letter-spacing: -0.035em; }
.access-gate-copy { margin: 14px 0 24px; color: hsl(var(--hue), 12%, 76%); line-height: 1.75; }
.detected-ip { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 22px; padding: 13px 15px; border: 1px solid hsla(var(--hue), 45%, 75%, 0.16); border-radius: 13px; background: rgba(0, 0, 0, 0.16); }
.detected-ip span { color: hsl(var(--hue), 12%, 70%); font-size: 0.84rem; }
.detected-ip code, .current-connection-card code, .allowlist-ip-line code { color: inherit; font: 650 0.9rem/1.5 ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace; overflow-wrap: anywhere; }
.access-gate-card form > label { display: block; margin-bottom: 8px; font-weight: 700; }
.password-field { position: relative; }
.password-field .form-control { padding-right: 72px; color: white; background: rgba(0, 0, 0, 0.22); border-color: hsla(var(--hue), 45%, 75%, 0.26); }
.password-field .form-control::placeholder { color: hsl(var(--hue), 10%, 62%); }
.password-toggle { position: absolute; top: 50%; right: 8px; min-width: 52px; min-height: 36px; border: 0; border-radius: 9px; color: hsl(var(--hue), 60%, 76%); background: hsla(var(--hue), 55%, 60%, 0.13); cursor: pointer; font-weight: 700; transform: translateY(-50%); }
.password-toggle:focus-visible { outline: 3px solid hsla(var(--hue), 75%, 72%, 0.45); }
.access-submit { width: 100%; margin-top: 2px; min-height: 50px; }
.inline-feedback { min-height: 24px; margin: 7px 0 3px; color: hsl(5, 85%, 73%); font-size: 0.88rem; }
.access-privacy { margin: 20px 0 0; color: hsl(var(--hue), 10%, 65%); font-size: 0.78rem; line-height: 1.6; }
.security-btn { min-width: 132px; }
.security-dot { display: inline-block; width: 8px; height: 8px; flex: 0 0 auto; border-radius: 999px; background: hsl(145, 70%, 49%); box-shadow: 0 0 0 4px hsla(145, 70%, 49%, 0.14); }
#access-modal { z-index: 1100; overflow: hidden; }
#confirm-modal { z-index: 1200; }
.access-modal-content { display: flex; flex-direction: column; max-width: 780px; max-height: 94dvh; margin: 3vh auto; padding: 28px; background: hsl(var(--hue), 24%, 96%); backdrop-filter: none; -webkit-backdrop-filter: none; }
.access-modal-body { display: grid; flex: 1; gap: 22px; min-height: 0; overflow-y: auto; padding: 2px 4px 8px 2px; }
.current-connection-card { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px; border: 1px solid hsla(var(--hue), 55%, 55%, 0.28); border-radius: 18px; background: linear-gradient(135deg, hsla(var(--hue), 55%, 58%, 0.16), hsla(calc(var(--hue) + 35), 55%, 58%, 0.08)); }
.current-connection-card h3 { margin: 9px 0 3px; color: var(--text); font-size: 1.12rem; }
.connection-status { display: inline-flex; align-items: center; gap: 9px; color: var(--text-light); font-size: 0.82rem; font-weight: 700; }
.ip-type-badge { display: inline-flex; align-items: center; min-height: 26px; padding: 3px 9px; border: 1px solid hsla(var(--hue), 45%, 55%, 0.24); border-radius: 999px; color: var(--text-light); background: hsla(var(--hue), 40%, 50%, 0.1); font-size: 0.72rem; font-weight: 800; }
.access-section { padding: 20px; border: 1px solid var(--glass-border); border-radius: 18px; background: hsla(var(--hue), 15%, var(--glass-lightness), 0.12); }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 16px; }
.section-heading h3 { margin: 0 0 3px; color: var(--text); font-size: 1.08rem; }
.section-heading p { margin: 0; color: var(--text-light); font-size: 0.84rem; }
.text-button { min-height: 36px; padding: 5px 10px; border: 0; border-radius: 9px; color: hsl(var(--hue), 55%, 38%); background: hsla(var(--hue), 55%, 55%, 0.11); cursor: pointer; font-weight: 750; white-space: nowrap; }
.text-button:hover { background: hsla(var(--hue), 55%, 55%, 0.2); }
.text-button:focus-visible { outline: 3px solid hsla(var(--hue), 70%, 55%, 0.3); }
.allowlist-form { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr) auto; align-items: end; gap: 12px; }
.form-field label { display: block; margin-bottom: 7px; color: var(--text); font-size: 0.86rem; font-weight: 700; }
.allowlist-form .form-control { padding: 11px 13px; }
.allowlist-form .btn { min-height: 49px; padding-inline: 18px; }
.ip-input { font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; }
.form-control[aria-invalid="true"] { border-color: var(--danger); box-shadow: 0 0 0 3px hsla(5, 80%, 55%, 0.16); }
.network-warning { display: grid; grid-template-columns: auto 1fr; gap: 11px; padding: 14px 16px; border: 1px solid hsla(43, 85%, 54%, 0.28); border-radius: 14px; color: var(--text-light); background: hsla(43, 90%, 55%, 0.1); font-size: 0.84rem; line-height: 1.6; }
.network-warning strong { color: hsl(38, 70%, 35%); white-space: nowrap; }
.allowlist-list { display: grid; gap: 10px; }
.allowlist-loading { padding: 24px 8px; color: var(--text-light); text-align: center; }
.allowlist-item { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-width: 0; padding: 14px; border: 1px solid var(--glass-border-light); border-radius: 14px; background: hsla(var(--hue), 12%, var(--glass-lightness), 0.12); }
.allowlist-item.is-current { border-color: hsla(145, 65%, 45%, 0.32); background: hsla(145, 58%, 48%, 0.08); }
.allowlist-item-main { min-width: 0; }
.allowlist-ip-line { display: flex; align-items: center; gap: 9px; min-width: 0; }
.allowlist-ip-line code { color: var(--text); }
.allowlist-item-main p { margin: 4px 0 0; color: var(--text-light); font-size: 0.78rem; }
.current-badge { display: inline-flex; align-items: center; gap: 9px; flex: 0 0 auto; padding: 8px 11px; border-radius: 999px; color: hsl(145, 58%, 30%); background: hsla(145, 58%, 48%, 0.12); font-size: 0.78rem; font-weight: 800; }
.muted-text { color: var(--text-light); opacity: 0.75; }
.empty-icon { display: grid; place-items: center; width: 52px; height: 52px; margin: auto; border: 2px solid var(--glass-border); border-radius: 16px; color: var(--primary); font: 800 1.6rem/1 ui-monospace, monospace; }

@media (max-width: 680px) {
  #access-modal { padding: 0; }
  .access-modal-content { width: 100%; max-width: none; height: 100dvh; max-height: 100dvh; min-height: 100%; margin: 0; border: 0; border-radius: 0; }
  .allowlist-form { grid-template-columns: 1fr; }
  .allowlist-form .btn { width: 100%; }
  .allowlist-item { align-items: flex-start; flex-direction: column; }
  .allowlist-item > .btn { width: 100%; }
  .current-badge { align-self: flex-start; }
}
@media (max-width: 480px) {
  .access-gate { padding: 12px; }
  .access-gate-card { padding: 26px 21px; border-radius: 22px; }
  .toolbar { align-items: stretch; flex-direction: column; }
  .toolbar .btn { width: 100%; }
  .current-connection-card { align-items: flex-start; flex-direction: column; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .network-warning { grid-template-columns: 1fr; }
}
@media (prefers-color-scheme: dark) {
  body { background: radial-gradient(circle at 15% 10%, hsla(var(--hue), 62%, 35%, 0.38), transparent 32rem), radial-gradient(circle at 88% 80%, hsla(calc(var(--hue) + 45), 62%, 30%, 0.3), transparent 34rem), hsl(var(--hue), 25%, 10%); }
  .text-button { color: hsl(var(--hue), 58%, 72%); }
  .network-warning strong { color: hsl(43, 75%, 70%); }
  .current-badge { color: hsl(145, 55%, 72%); }
  .access-modal-content { background: hsl(var(--hue), 20%, 14%); }
}