/* ===== GPS Tracker · 设计系统 ===== */

* { box-sizing: border-box; }
[hidden] { display: none !important; }

:root,
:root[data-theme="dark"] {
    --bg-1:        #07090f;
    --bg-2:        #0d1320;
    --bg-3:        #131a2a;

    --surface-1:   rgba(255, 255, 255, 0.03);
    --surface-2:   rgba(255, 255, 255, 0.05);
    --surface-3:   rgba(255, 255, 255, 0.08);
    --surface-hi:  rgba(255, 255, 255, 0.12);

    --border-1:    rgba(255, 255, 255, 0.06);
    --border-2:    rgba(255, 255, 255, 0.1);
    --border-hi:   rgba(255, 255, 255, 0.2);

    --text-1:      #f1f4fa;
    --text-2:      #b6c0d2;
    --text-3:      #7c8699;
    --text-4:      #4d5567;

    --brand:       #7c9eff;
    --brand-2:     #5a7eff;
    --brand-3:     #9a7cff;
    --brand-glow:  rgba(124, 158, 255, 0.35);

    --success:     #10d094;
    --success-bg:  rgba(16, 208, 148, 0.12);
    --success-glow: rgba(16, 208, 148, 0.2);
    --warning:     #ffb547;
    --warning-bg:  rgba(255, 181, 71, 0.12);
    --danger:      #ff5d6c;
    --danger-bg:   rgba(255, 93, 108, 0.12);

    --glow-1:      rgba(124, 158, 255, 0.15);
    --glow-2:      rgba(154, 124, 255, 0.12);
    --glow-3:      rgba(16, 208, 148, 0.04);

    --shadow-1: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-2: 0 4px 16px rgba(0,0,0,0.25);
    --shadow-3: 0 12px 40px rgba(0,0,0,0.4);
    --shadow-brand: 0 6px 24px rgba(124, 158, 255, 0.3);
}

:root[data-theme="light"] {
    --bg-1:        #f4f6fb;
    --bg-2:        #ffffff;
    --bg-3:        #eef2f8;

    --surface-1:   rgba(255, 255, 255, 0.7);
    --surface-2:   rgba(255, 255, 255, 0.85);
    --surface-3:   rgba(247, 249, 252, 0.92);
    --surface-hi:  rgba(238, 242, 248, 0.95);

    --border-1:    rgba(20, 30, 50, 0.06);
    --border-2:    rgba(20, 30, 50, 0.1);
    --border-hi:   rgba(20, 30, 50, 0.18);

    --text-1:      #1a2030;
    --text-2:      #4a5568;
    --text-3:      #7a8699;
    --text-4:      #aab3c2;

    --brand:       #5a7eff;
    --brand-2:     #4a6edb;
    --brand-3:     #7c5eff;
    --brand-glow:  rgba(90, 126, 255, 0.22);

    --success:     #08a878;
    --success-bg:  rgba(16, 208, 148, 0.1);
    --success-glow: rgba(16, 208, 148, 0.28);
    --warning:     #d68a0a;
    --warning-bg:  rgba(232, 154, 22, 0.1);
    --danger:      #dc3545;
    --danger-bg:   rgba(220, 53, 69, 0.08);

    --glow-1:      rgba(124, 158, 255, 0.22);
    --glow-2:      rgba(124, 94, 255, 0.16);
    --glow-3:      rgba(16, 208, 148, 0.06);

    --shadow-1: 0 1px 2px rgba(20, 30, 50, 0.04);
    --shadow-2: 0 4px 16px rgba(20, 30, 50, 0.06);
    --shadow-3: 0 12px 40px rgba(20, 30, 50, 0.08);
    --shadow-brand: 0 6px 24px rgba(90, 126, 255, 0.25);
}

:root {
    /* 圆角 */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 16px;
    --r-xl: 20px;
    --r-full: 9999px;

    /* 动画 */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --t-fast: 0.15s;
    --t-base: 0.25s;
    --t-slow: 0.4s;
}

html, body {
    margin: 0; padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    color: var(--text-1);
    line-height: 1.55;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    overflow-x: hidden;
}

body {
    background:
        radial-gradient(ellipse 1000px 700px at 15% -10%,  var(--glow-1), transparent 50%),
        radial-gradient(ellipse 800px 1000px at 85% 110%, var(--glow-2), transparent 50%),
        radial-gradient(ellipse 600px 600px at 50% 50%,  var(--glow-3), transparent 60%),
        var(--bg-1);
    background-attachment: fixed;
    transition: background-color var(--t-slow) var(--ease);
}

/* 全局动态微光（可选装饰） */
body::before {
    content: '';
    position: fixed; inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, var(--glow-1) 0%, transparent 8%),
        radial-gradient(circle at 80% 70%, var(--glow-2) 0%, transparent 10%);
    pointer-events: none;
    z-index: 0;
    animation: drift 30s ease-in-out infinite alternate;
}
@keyframes drift {
    from { transform: translate(0, 0); }
    to   { transform: translate(-2%, 2%); }
}

a { color: var(--brand); text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--brand-3); }
button, input, select, textarea { font-family: inherit; }

/* ===== 通用容器 ===== */
.wrap {
    max-width: 880px; margin: 0 auto;
    padding: 32px 20px 80px;
    position: relative; z-index: 1;
}
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ===== 顶部 app-header ===== */
.app-header {
    position: relative; z-index: 1;
    text-align: center;
    padding: 56px 20px 32px;
    background:
        radial-gradient(ellipse 600px 300px at 50% 0%, rgba(124,158,255,0.18), transparent 70%);
}
.app-header::after {
    content: ''; position: absolute; left: 50%; bottom: 0;
    transform: translateX(-50%);
    width: 60%; max-width: 360px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-2), transparent);
}
.app-header h1 {
    margin: 0 0 10px;
    font-size: 32px; font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-1) 0%, var(--brand) 50%, var(--brand-3) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.app-header p {
    margin: 0 0 24px;
    font-size: 14px; color: var(--text-2);
    letter-spacing: 0.3px;
}
.app-header .nav {
    display: inline-flex; gap: 8px;
    flex-wrap: wrap; justify-content: center;
}
.app-header .nav a, .app-header .nav button.lang-toggle {
    background: var(--surface-2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: var(--text-1);
    padding: 9px 16px;
    border-radius: var(--r-full);
    font-size: 13px; font-weight: 500;
    border: 1px solid var(--border-1);
    transition: all var(--t-base) var(--ease);
    cursor: pointer;
    display: inline-flex; align-items: center; gap: 4px;
}
.app-header .nav a:hover, .app-header .nav button.lang-toggle:hover {
    background: var(--surface-3);
    border-color: var(--border-hi);
    transform: translateY(-1px);
    text-decoration: none;
    color: var(--text-1);
}
.app-header .nav a.primary {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: var(--shadow-brand);
    font-weight: 600;
}
.app-header .nav a.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(124, 158, 255, 0.45);
    color: #fff;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 18px;
    background: var(--surface-2);
    color: var(--text-1);
    border: 1px solid var(--border-1);
    border-radius: var(--r-sm);
    font-size: 13.5px; font-weight: 500;
    transition: all var(--t-base) var(--ease);
    cursor: pointer;
    user-select: none;
    text-decoration: none;
}
.btn:hover {
    background: var(--surface-3);
    border-color: var(--border-2);
    transform: translateY(-1px);
    color: var(--text-1);
    text-decoration: none;
}
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.big { padding: 16px 32px; font-size: 16px; border-radius: var(--r-md); }
.btn.huge { padding: 22px 36px; font-size: 17px; border-radius: var(--r-md); width: 100%; font-weight: 600; }
.btn.primary {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: var(--shadow-brand);
}
.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(124, 158, 255, 0.45);
    color: #fff;
}
.btn.danger {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: rgba(255, 93, 108, 0.2);
}
.btn.danger:hover {
    background: rgba(255, 93, 108, 0.2);
    border-color: var(--danger);
}
.btn.success {
    background: linear-gradient(135deg, var(--success) 0%, #0ea876 100%);
    border-color: transparent;
    color: #001a14;
    box-shadow: 0 6px 20px rgba(16, 208, 148, 0.35);
    font-weight: 600;
}
.btn.warn {
    background: linear-gradient(135deg, var(--warning) 0%, #f59e0b 100%);
    border-color: transparent;
    color: #1a1100;
    box-shadow: 0 6px 20px rgba(255, 181, 71, 0.3);
    font-weight: 600;
}

/* ===== 卡片 ===== */
.card {
    background: var(--surface-1);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-1);
    border-radius: var(--r-lg);
    padding: 20px 22px;
    margin-bottom: 14px;
    transition: all var(--t-base) var(--ease);
    position: relative;
    overflow: hidden;
}
.card:has(.actions.open) {
    overflow: visible;
    z-index: 20;
}
.card::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(124, 158, 255, 0.03) 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--t-base) var(--ease);
}
.card:hover {
    border-color: var(--border-2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}
.card:hover::before { opacity: 1; }
.card h3 {
    margin: 0 0 8px;
    font-size: 16px; font-weight: 600;
    display: flex; align-items: center; gap: 10px;
    color: var(--text-1);
    position: relative;
}
.card .meta {
    font-size: 12px; color: var(--text-2);
    display: flex; gap: 8px; flex-wrap: wrap;
    margin-top: 10px;
    position: relative;
}
.card .meta .pill {
    background: var(--surface-2);
    border: 1px solid var(--border-1);
    padding: 4px 10px;
    border-radius: var(--r-full);
    font-size: 11.5px;
    color: var(--text-2);
    font-variant-numeric: tabular-nums;
}
.card .actions {
    margin-top: 14px;
    display: flex; gap: 8px; align-items: center;
    justify-content: flex-end;
    position: relative;
}
.card .actions .btn { padding: 7px 14px; font-size: 12.5px; }

.more-btn {
    display: inline-flex;
    align-items: center; justify-content: center;
    width: 34px; height: 34px;
    font-size: 20px; line-height: 1;
    padding: 0; flex: none;
}

.actions-menu {
    display: none;
    position: absolute;
    right: 0; top: calc(100% + 6px);
    z-index: 30;
    background: var(--bg-2);
    border: 1px solid var(--border-2);
    border-radius: var(--r-md);
    padding: 6px;
    min-width: 200px;
    flex-direction: column;
    gap: 2px;
    box-shadow: var(--shadow-3);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform-origin: top right;
    animation: menuIn 0.15s var(--ease-out);
}
.actions.open .actions-menu { display: flex; }
@keyframes menuIn {
    from { opacity: 0; transform: scale(0.95) translateY(-4px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.menu-item {
    width: 100% !important;
    padding: 10px 14px !important;
    justify-content: flex-start !important;
    font-size: 13.5px !important;
    border: none !important;
    background: transparent !important;
    text-align: left;
    border-radius: var(--r-sm) !important;
}
.menu-item:hover {
    background: var(--surface-2) !important;
    border: none !important;
    transform: none !important;
}
.menu-item.danger { color: var(--danger); }
.menu-item.danger:hover { background: var(--danger-bg) !important; }

@media (max-width: 640px) {
    .card .actions { gap: 6px; }
    .card .actions > .btn.primary,
    .card .actions .btn {
        padding: 3px 10px;
        font-size: 11.5px;
        border-radius: var(--r-full);
        min-height: auto;
        line-height: 1.5;
    }
    .card .actions > .btn.primary {
        flex: none;
        min-width: 0;
        background: transparent;
        color: var(--brand);
        border: 1px solid currentColor;
        box-shadow: none !important;
    }
    .card .actions > .btn.primary:hover,
    .card .actions > .btn.primary:active {
        transform: none;
        background: var(--brand-glow);
    }
    .more-btn { width: 30px; height: 30px; font-size: 16px; }
    .menu-item { padding: 12px 14px !important; font-size: 14px !important; }
}
/* 时间胶囊：移动端隐藏年号和结束时间 */
.t-y, .t-range { display: none; }
@media (min-width: 641px) {
    .t-y, .t-range { display: inline; }
}

/* 移动端：隐藏低频操作 */
@media (max-width: 640px) {
    #importGpxBtn { display: none !important; }
}

/* 移动端：时间独占一行，其他三颗紧凑 */
@media (max-width: 640px) {
    .card .meta { gap: 2px 4px; }
    .card .meta .pill:first-child { width: 100%; }
    .card .meta .pill:first-child .t-y,
    .card .meta .pill:first-child .t-range { display: inline; }
    .card .meta .pill:not(:first-child) { padding: 3px 7px; font-size: 10.5px; }
}
.card .color-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    display: inline-block; flex: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

/* ===== 统计条 ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}
.stat {
    background: var(--surface-1);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-1);
    border-radius: var(--r-lg);
    padding: 18px 20px;
    transition: all var(--t-base) var(--ease);
    position: relative;
    overflow: hidden;
}
.stat::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--brand) 50%, transparent);
    opacity: 0.4;
}
.stat:hover {
    border-color: var(--border-2);
    transform: translateY(-2px);
}
.stat .label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-3);
    font-weight: 600;
}
.stat .value {
    font-size: 28px; font-weight: 700;
    margin-top: 6px;
    font-variant-numeric: tabular-nums;
    background: linear-gradient(135deg, var(--text-1) 0%, var(--brand) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    transition: background var(--t-slow) var(--ease);
}

/* ===== 列表分组标题 ===== */
.section-title {
    font-size: 11px; font-weight: 600;
    color: var(--text-3);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 14px;
    padding-left: 4px;
}

/* ===== 空状态 ===== */
.empty {
    text-align: center;
    padding: 64px 24px;
    color: var(--text-2);
    background: var(--surface-1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px dashed var(--border-2);
    border-radius: var(--r-lg);
}
.empty .icon {
    font-size: 48px; margin-bottom: 16px;
    opacity: 0.7;
    display: inline-block;
    filter: drop-shadow(0 4px 20px rgba(124, 158, 255, 0.4));
}
.empty > div:nth-child(2) {
    font-size: 15px; color: var(--text-1);
    font-weight: 500; margin-bottom: 4px;
}
.empty > div:nth-child(3) {
    margin-top: 20px;
}

/* ===== 输入框 ===== */
input[type="text"], input[type="number"], select, textarea {
    background: var(--surface-2);
    color: var(--text-1);
    border: 1px solid var(--border-1);
    border-radius: var(--r-sm);
    padding: 11px 14px;
    font-size: 14px;
    outline: none;
    transition: all var(--t-base) var(--ease);
    width: 100%;
}
input[type="text"]:focus, select:focus, textarea:focus {
    border-color: var(--brand);
    background: var(--surface-3);
    box-shadow: 0 0 0 3px var(--brand-glow);
}
input::placeholder { color: var(--text-4); }
label { font-size: 13px; color: var(--text-2); font-weight: 500; display: block; margin-bottom: 6px; }

/* ===== 记录页 ===== */
.rec-status {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 14px;
    border-radius: var(--r-full);
    font-size: 13px; font-weight: 500;
    background: var(--surface-2);
    border: 1px solid var(--border-1);
    transition: all var(--t-base) var(--ease);
}
.rec-status .dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--text-4);
    transition: all var(--t-base) var(--ease);
}
.rec-status.ok {
    background: var(--success-bg);
    border-color: rgba(16, 208, 148, 0.25);
    color: var(--success);
}
.rec-status.ok .dot {
    background: var(--success);
    box-shadow: 0 0 0 4px var(--success-glow);
    animation: pulse 2s ease-in-out infinite;
}
.rec-status.warn {
    background: var(--warning-bg);
    border-color: rgba(255, 181, 71, 0.25);
    color: var(--warning);
}
.rec-status.warn .dot { background: var(--warning); box-shadow: 0 0 0 4px rgba(255, 181, 71, 0.15); }
.rec-status.error {
    background: var(--danger-bg);
    border-color: rgba(255, 93, 108, 0.25);
    color: var(--danger);
}
.rec-status.error .dot { background: var(--danger); }
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 4px var(--success-glow); }
    50%      { box-shadow: 0 0 0 8px transparent; }
}

.rec-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 16px 0;
}
.rec-cell {
    background: var(--surface-1);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-1);
    border-radius: var(--r-md);
    padding: 16px 18px;
    transition: all var(--t-base) var(--ease);
    position: relative;
    overflow: hidden;
}
.rec-cell::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 60px; height: 1px;
    background: linear-gradient(90deg, var(--brand), transparent);
}
.rec-cell .l {
    font-size: 11px; color: var(--text-3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 600;
}
.rec-cell .v {
    font-size: 26px; font-weight: 700;
    margin-top: 4px;
    font-variant-numeric: tabular-nums;
    background: linear-gradient(135deg, var(--text-1) 0%, var(--brand) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    transition: background var(--t-slow) var(--ease);
}
.rec-cell .u { font-size: 12px; color: var(--text-3); margin-left: 4px; font-weight: 500; -webkit-text-fill-color: var(--text-3); }

.rec-map {
    height: 280px;
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--border-1);
    box-shadow: var(--shadow-2);
    margin-bottom: 20px;
    background: var(--bg-2);
}

.controls { display: flex; gap: 10px; }
.controls .btn { flex: 1; }

.tip-list {
    margin: 18px 0 0;
    padding: 16px 18px 16px 18px;
    background: var(--surface-1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-1);
    border-radius: var(--r-md);
    font-size: 12.5px;
    color: var(--text-2);
    line-height: 1.7;
}
.tip-list .tip-title {
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 8px;
    display: block;
    letter-spacing: 0.5px;
}
.tip-list ul { margin: 0; padding-left: 20px; }
.tip-list li { margin-bottom: 2px; }

/* ===== 地图页 ===== */
#map { position: fixed; inset: 0; z-index: 0; }

.map-header {
    position: fixed; bottom: 16px; left: 16px;
    z-index: 1000;
    display: flex; gap: 8px; align-items: center;
    background: var(--surface-1);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--border-1);
    border-radius: var(--r-full);
    padding: 8px 8px 8px 20px;
    box-shadow: var(--shadow-3);
    max-width: calc(100vw - 32px);
}
.map-header .title {
    font-size: 14px; font-weight: 600;
    color: var(--text-1);
    flex: 1 1 auto; min-width: 0; max-width: 280px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.map-header .title span:last-child {
    color: var(--text-3);
    font-weight: 400;
    margin-left: 6px;
}
.map-header .live-indicator {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px;
    background: rgba(80, 220, 100, 0.15);
    color: #4ade80;
    border: 1px solid rgba(80, 220, 100, 0.4);
    border-radius: var(--r-full);
    font-size: 11px; font-weight: 700;
    letter-spacing: 0.5px;
    flex: 0 0 auto;
}
.map-header .live-indicator::before {
    content: '';
    display: inline-block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: #4ade80;
    animation: live-pulse 1.4s ease-in-out infinite;
}
@keyframes live-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.4; transform: scale(0.7); }
}
.map-header .btn, .map-header button.lang-toggle {
    background: var(--surface-3);
    color: var(--text-1);
    border: 1px solid var(--border-1);
    padding: 7px 14px;
    border-radius: var(--r-full);
    font-size: 12.5px; font-weight: 500;
    transition: all var(--t-base) var(--ease);
    cursor: pointer;
    text-decoration: none;
}
.map-header .btn:hover, .map-header button.lang-toggle:hover {
    background: var(--surface-hi);
    border-color: var(--border-hi);
    color: var(--text-1);
    text-decoration: none;
}
.map-header .btn.primary {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 16px rgba(124, 158, 255, 0.4);
}
.map-header .btn.primary:hover {
    transform: translateY(-1px);
    color: #fff;
}
.map-header .layer-select {
    /* moved to .layer-control outside map-header */
}
.layer-control {
    position: fixed;
    top: 16px; right: 16px;
    z-index: 1000;
    display: flex; gap: 8px; align-items: center;
}
.layer-control .follow-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    background: var(--surface-2);
    color: var(--text-2);
    border: 1px solid var(--border-1);
    padding: 8px 14px;
    border-radius: var(--r-full);
    font-size: 13px; font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--t-base) var(--ease);
    outline: none;
    box-shadow: var(--shadow-2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}
.layer-control .follow-btn:hover {
    background: var(--surface-3);
    border-color: var(--border-hi);
    transform: translateY(-1px);
    box-shadow: var(--shadow-3);
}
.layer-control .follow-btn[aria-pressed="true"] {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.layer-control .layer-select {
    background: var(--surface-2);
    color: var(--text-1);
    border: 1px solid var(--border-1);
    padding: 8px 32px 8px 14px;
    border-radius: var(--r-full);
    font-size: 13px; font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--t-base) var(--ease);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'><path d='M2 4l3 3 3-3' fill='none' stroke='%23b6c0d2' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-color: var(--surface-2);
    box-shadow: var(--shadow-2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}
.layer-control .layer-select:hover {
    background-color: var(--surface-3);
    border-color: var(--border-hi);
    transform: translateY(-1px);
    box-shadow: var(--shadow-3);
}
@media (max-width: 640px) {
    .layer-control { top: 12px; right: 12px; }
    .layer-control .layer-select { padding: 6px 26px 6px 10px; font-size: 12px; }
    .layer-control .follow-btn { padding: 6px 12px; font-size: 12px; }
}

/* ===== 播放控制 ===== */
.playback-control {
    position: fixed;
    bottom: 78px; left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex; gap: 8px; align-items: center;
    background: var(--surface-2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-1);
    border-radius: var(--r-full);
    padding: 6px 10px 6px 8px;
    box-shadow: var(--shadow-3);
    color: var(--text-1);
}
.playback-control .play-btn,
.playback-control .stop-btn {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    aspect-ratio: 1 / 1;
    background: var(--surface-3);
    border: 1px solid var(--border-1);
    color: var(--text-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--t-base) var(--ease);
    padding: 0;
    line-height: 0;
    box-sizing: border-box;
    flex-shrink: 0;
}
.playback-control .play-btn {
    background: var(--brand);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 12px rgba(124,158,255,0.4);
}
.playback-control .play-btn:hover { transform: scale(1.05); }
.playback-control .play-btn.playing { background: var(--warning); box-shadow: 0 4px 12px rgba(255,181,71,0.4); }
.playback-control .stop-btn:hover {
    background: var(--surface-hi);
    border-color: var(--border-hi);
}
.playback-control .time {
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    color: var(--text-3);
    min-width: 100px;
    text-align: center;
    user-select: none;
}
.playback-control .time #curTime { color: var(--text-1); font-weight: 600; }
.playback-control .speed-select {
    background: var(--surface-3);
    color: var(--text-1);
    border: 1px solid var(--border-1);
    border-radius: var(--r-sm);
    padding: 4px 6px;
    font-size: 12px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    text-align: center;
    min-width: 50px;
}
.playback-control .speed-select:hover {
    background: var(--surface-hi);
    border-color: var(--border-hi);
}
@media (max-width: 640px) {
    .playback-control { bottom: 70px; padding: 5px 8px; }
    .playback-control .time { min-width: 85px; font-size: 11px; }
    .playback-control .speed-select { font-size: 11px; min-width: 44px; }
}

/* 地图空状态 */
.map-empty {
    position: fixed; inset: 0;
    display: none; align-items: center; justify-content: center;
    background:
        radial-gradient(ellipse 800px 600px at 50% 50%, rgba(124, 158, 255, 0.12), transparent),
        var(--bg-1);
    z-index: 2000;
    text-align: center;
    padding: 30px;
}
.map-empty.show { display: flex; }
.map-empty .inner { max-width: 360px; }
.map-empty .icon {
    font-size: 64px; margin-bottom: 20px;
    display: inline-block;
    filter: drop-shadow(0 8px 24px rgba(124, 158, 255, 0.4));
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-6px); }
}
.map-empty p {
    color: var(--text-1);
    margin: 0 0 24px;
    font-size: 16px;
    font-weight: 500;
}

/* Leaflet 弹窗重写 */
.leaflet-popup-content-wrapper {
    background: var(--bg-2) !important;
    color: var(--text-1) !important;
    border: 1px solid var(--border-2) !important;
    border-radius: var(--r-md) !important;
    box-shadow: var(--shadow-3) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.leaflet-popup-tip {
    background: var(--bg-2) !important;
    border: 1px solid var(--border-2) !important;
}
.leaflet-popup-content {
    margin: 14px 16px !important;
    font-size: 13px !important;
    line-height: 1.6 !important;
    font-family: inherit !important;
}
.leaflet-popup-content strong {
    color: var(--text-1);
    font-size: 14px;
    display: block;
    margin-bottom: 6px;
}
.leaflet-popup-content .row {
    gap: 14px;
    font-size: 12px;
    color: var(--text-2);
    margin-top: 4px;
}
.leaflet-popup-close-button {
    color: var(--text-3) !important;
    font-size: 20px !important;
    padding: 4px 8px !important;
}
.leaflet-control-attribution {
    background: var(--bg-2) !important;
    color: var(--text-2) !important;
    border-radius: var(--r-sm) !important;
    padding: 2px 8px !important;
    font-size: 10px !important;
    border: 1px solid var(--border-1) !important;
    box-shadow: var(--shadow-1) !important;
    margin: 0 0 4px 4px !important;
}
.leaflet-control-attribution a { color: var(--brand) !important; }
.leaflet-control-zoom {
    margin: 16px !important;
    border: 1px solid var(--border-1) !important;
    border-radius: var(--r-sm) !important;
    box-shadow: var(--shadow-2) !important;
    overflow: hidden;
}
.leaflet-control-zoom a {
    background: var(--bg-2) !important;
    color: var(--text-1) !important;
    border: none !important;
    border-bottom: 1px solid var(--border-1) !important;
    width: 32px !important;
    height: 32px !important;
    line-height: 30px !important;
    font-size: 20px !important;
    font-weight: 500 !important;
    transition: all var(--t-base) var(--ease);
}
.leaflet-control-zoom a:last-child { border-bottom: none !important; }
.leaflet-control-zoom a:hover {
    background: var(--brand) !important;
    color: #fff !important;
}

/* ===== 语言切换按钮 ===== */
.lang-toggle {
    background: var(--surface-2) !important;
    border: 1px solid var(--border-1) !important;
    color: var(--text-1) !important;
    padding: 5px 12px !important;
    border-radius: var(--r-full) !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    cursor: pointer;
    letter-spacing: 1px;
    min-width: 40px;
    text-align: center;
}
.lang-toggle:hover {
    background: var(--surface-3) !important;
    border-color: var(--border-hi) !important;
}

/* ===== 主题切换按钮 ===== */
.theme-toggle {
    background: var(--surface-2) !important;
    border: 1px solid var(--border-1) !important;
    color: var(--text-1) !important;
    border-radius: var(--r-full) !important;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--t-base) var(--ease);
    line-height: 1;
    height: auto;
}
.app-header .theme-toggle { padding: 9px 0 !important; width: 38px; }
.map-header .theme-toggle { padding: 7px 0 !important; width: 34px; }
.theme-toggle:hover {
    background: var(--surface-3) !important;
    border-color: var(--border-hi) !important;
    transform: translateY(-1px);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"]  .theme-toggle .icon-moon,
:root:not([data-theme]) .theme-toggle .icon-moon { display: inline; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: inline; }

/* ===== Toast ===== */
.toast {
    position: fixed; bottom: 30px; left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-2);
    color: var(--text-1);
    padding: 12px 22px;
    border-radius: var(--r-full);
    border: 1px solid var(--border-2);
    box-shadow: var(--shadow-3);
    font-size: 13.5px; font-weight: 500;
    z-index: 2000;
    opacity: 0;
    transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease-out);
    pointer-events: none;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.toast.error {
    border-color: var(--danger);
    color: var(--danger);
    background: var(--bg-2);
}

/* ===== 模态框 ===== */
.modal-bg {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none; align-items: center; justify-content: center;
    z-index: 1500;
    padding: 20px;
    animation: fadeIn var(--t-base) var(--ease);
}
.modal-bg.show { display: flex; }
.modal {
    background: var(--bg-2);
    border: 1px solid var(--border-2);
    border-radius: var(--r-lg);
    padding: 24px 26px;
    max-width: 420px; width: 100%;
    box-shadow: var(--shadow-3);
    animation: slideUp var(--t-base) var(--ease-out);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px) scale(0.96); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }

.modal h3 { margin: 0 0 16px; font-size: 17px; font-weight: 600; color: var(--text-1); }
.modal .field { margin-bottom: 14px; }
.modal .field label { display: block; margin-bottom: 6px; }
.modal .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }
.modal-close {
    position: absolute; right: 14px; top: 14px;
    width: 30px; height: 30px;
    border-radius: 50%;
    border: none; background: var(--surface-2); color: var(--text-2);
    cursor: pointer; font-size: 18px;
    transition: all var(--t-fast) var(--ease);
}
.modal-close:hover { background: var(--surface-3); color: var(--text-1); }

/* ===== 卡片入场动画 ===== */
@keyframes cardIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.card, .stat, .empty {
    animation: cardIn var(--t-slow) var(--ease-out) backwards;
}
.card:nth-child(1)  { animation-delay: 0ms; }
.card:nth-child(2)  { animation-delay: 40ms; }
.card:nth-child(3)  { animation-delay: 80ms; }
.card:nth-child(4)  { animation-delay: 120ms; }
.card:nth-child(5)  { animation-delay: 160ms; }
.card:nth-child(6)  { animation-delay: 200ms; }
.card:nth-child(7)  { animation-delay: 240ms; }
.card:nth-child(8)  { animation-delay: 280ms; }
.card:nth-child(n+9){ animation-delay: 320ms; }

.stat:nth-child(1) { animation-delay: 0ms; }
.stat:nth-child(2) { animation-delay: 60ms; }
.stat:nth-child(3) { animation-delay: 120ms; }

/* ===== 响应式 ===== */
@media (max-width: 640px) {
    .app-header { padding: 40px 16px 24px; }
    .app-header h1 { font-size: 26px; }
    .stats { grid-template-columns: 1fr 1fr; gap: 8px; }
    .stat { padding: 14px 16px; }
    .stat .value { font-size: 22px; }
    .rec-cell .v { font-size: 22px; }
    .rec-map { height: 220px; }
    .map-header { bottom: 12px; left: 12px; padding: 6px 6px 6px 16px; }
    .map-header .title { font-size: 13px; }
    .map-header .btn, .map-header button.lang-toggle { padding: 6px 10px; font-size: 11.5px; }
    .wrap { padding: 24px 16px 60px; }
    .card { padding: 16px 18px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}