/* ===== CSS Reset & Variables ===== */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{touch-action:manipulation}
:root{
  --bg:#0a0f1a;--bg2:#111827;--bg3:#1f2937;--bg4:#374151;
  --text:#f3f4f6;--text2:#9ca3af;--text3:#8b95a5;
  --accent:#3b82f6;--accent2:#60a5fa;
  --flight:#f59e0b;--flight-bg:rgba(245,158,11,0.15);
  --train:#10b981;--train-bg:rgba(16,185,129,0.15);
  --danger:#ef4444;--danger-bg:rgba(239,68,68,0.15);
  --radius:12px;--radius-sm:8px;
  --header-h:52px;--tab-h:56px;
  --safe-top:env(safe-area-inset-top,0px);
  --safe-bottom:env(safe-area-inset-bottom,0px);
}
/* Light theme */
.light{
  --bg:#f5f5f7;--bg2:#ffffff;--bg3:#e5e7eb;--bg4:#d1d5db;
  --text:#1f2937;--text2:#4b5563;--text3:#6b7280;
  --flight:#d97706;--flight-bg:rgba(217,119,6,0.12);
  --train:#059669;--train-bg:rgba(5,150,105,0.12);
}
html,body{height:100vh;width:100vw;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','Segoe UI',Roboto,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.5;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;transition:background .3s,color .3s}

/* ===== Loading ===== */
.loading-screen{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg);z-index:9999}
.loading-globe{position:relative;width:80px;height:80px;margin-bottom:20px}
.globe-ring{width:80px;height:80px;border:2px solid rgba(59,130,246,0.15);border-radius:50%;position:relative}
.globe-ring::before{content:'';position:absolute;inset:-2px;border:2px solid transparent;border-top-color:var(--flight);border-radius:50%;animation:globeSpin 1.2s linear infinite}
.globe-ring::after{content:'🌍';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:32px}
.globe-plane{position:absolute;top:-8px;left:50%;transform:translateX(-50%);font-size:18px;color:var(--flight);animation:planeOrbit 1.2s linear infinite}
@keyframes globeSpin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}
@keyframes planeOrbit{0%{top:-8px;left:50%;transform:translateX(-50%)}25%{top:50%;left:calc(100% + 4px);transform:translateY(-50%) rotate(90deg)}50%{top:calc(100% + 4px);left:50%;transform:translateX(-50%) rotate(180deg)}75%{top:50%;left:-12px;transform:translateY(-50%) rotate(270deg)}100%{top:-8px;left:50%;transform:translateX(-50%) rotate(360deg)}}
.loading-text{font-size:20px;font-weight:600;color:var(--text);margin-bottom:24px;letter-spacing:2px}
.loading-bar{width:120px;height:3px;background:var(--bg3);border-radius:2px;overflow:hidden}
.loading-fill{width:0%;height:100%;background:linear-gradient(90deg,var(--flight),var(--accent));border-radius:2px;animation:loadFill 1s ease-out forwards}
@keyframes loadFill{to{width:100%}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}

/* ===== Header ===== */
header{position:fixed;top:0;left:0;right:0;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;padding-left:16px;padding-right:12px;background:var(--bg);border-bottom:1px solid var(--bg3);z-index:100}
.header-left{display:flex;align-items:center;gap:8px}
.app-logo{font-size:22px}
.app-title{font-size:17px;font-weight:700;letter-spacing:1px}
.header-right{display:flex;gap:4px}
.btn-icon{background:none;border:none;color:var(--text2);padding:10px;cursor:pointer;border-radius:8px;transition:all .2s;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center;font-size:18px}
.btn-icon:active{background:var(--bg3);color:var(--text)}

/* ===== Tab Navigation ===== */
#tabNav{position:fixed;bottom:0;left:0;right:0;height:var(--tab-h);display:flex;background:var(--bg2);border-top:1px solid var(--bg3);z-index:100}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border:none;background:none;color:var(--text3);font-size:10px;cursor:pointer;transition:color .2s;padding:4px 0;min-height:44px;position:relative}
.tab::after{content:'';position:absolute;bottom:0;left:20%;right:20%;height:2px;background:var(--accent);border-radius:1px;transform:scaleX(0);transition:transform .2s ease}
.tab.active::after{transform:scaleX(1)}
.tab svg{opacity:0.5;transition:opacity .2s}
.tab.active{color:var(--accent)}
.tab.active svg{opacity:1;stroke:var(--accent)}

/* ===== Views ===== */
.view{position:fixed;top:52px;bottom:56px;left:0;right:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility 0s .2s}
.view.active{opacity:1;visibility:visible;transition:opacity .2s ease,visibility 0s 0s}
.view-header{position:sticky;top:0;background:var(--bg);z-index:10;padding:8px 12px;border-bottom:1px solid var(--bg3)}

/* ===== Map ===== */
#viewMap{overflow:hidden}
#mapCanvas{width:100%;height:100%;touch-action:none}
#mapControls{position:absolute;right:12px;bottom:80px;display:flex;flex-direction:column;gap:6px}
.map-btn{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,0.08);background:rgba(17,24,39,0.85);color:var(--text);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,0.3);backdrop-filter:blur(4px)}
.map-btn:active{background:var(--bg3)}
.light .map-btn{background:rgba(255,255,255,0.9);color:#1f2937;box-shadow:0 2px 8px rgba(0,0,0,0.12)}
.light .map-btn:active{background:rgba(229,231,235,0.95)}
#mapLegend{position:absolute;left:12px;top:12px;display:flex;gap:12px;font-size:12px;color:var(--text2);background:rgba(10,15,26,0.7);padding:6px 10px;border-radius:8px;backdrop-filter:blur(4px)}
.light #mapLegend{background:rgba(255,255,255,0.85)}
.legend-item{display:flex;align-items:center;gap:4px}
.legend-dot{width:10px;height:10px;border-radius:50%}
.legend-dot.flight{background:var(--flight)}
.legend-dot.train{background:var(--train)}
#mapSummary{position:absolute;left:0;right:0;bottom:8px;text-align:center;font-size:12px;color:var(--text2);background:rgba(10,15,26,0.7);margin:0 12px;padding:6px 0;border-radius:8px;backdrop-filter:blur(4px)}
.light #mapSummary{background:rgba(255,255,255,0.92);border:1px solid rgba(0,0,0,0.08);box-shadow:0 2px 8px rgba(0,0,0,0.06)}
#mapSummary .sep{margin:0 6px;opacity:0.4}

/* ===== Map Tooltip ===== */
.map-tooltip{position:absolute;background:rgba(15,23,42,0.95);border:1px solid rgba(59,130,246,0.3);border-radius:10px;padding:10px 14px;font-size:12px;color:var(--text);pointer-events:none;backdrop-filter:blur(8px);box-shadow:0 4px 20px rgba(0,0,0,0.6);z-index:20;min-width:130px;transition:opacity .15s}
.map-tooltip .tt-city{font-size:15px;font-weight:700;margin-bottom:6px}
.map-tooltip .tt-row{display:flex;justify-content:space-between;gap:16px;color:var(--text2);margin-top:3px}
.map-tooltip .tt-row span:last-child{color:var(--text);font-weight:600}

/* ===== Trip Search ===== */
.search-bar{margin-bottom:8px}
.search-bar input{width:100%;padding:10px 14px;border-radius:20px;border:1px solid var(--bg3);background:var(--bg2);color:var(--text);font-size:14px;outline:none;transition:all .2s}
.search-bar input:focus{border-color:var(--accent);background:var(--bg)}
.search-bar input::placeholder{color:var(--text3)}

/* ===== Trip List ===== */
.filter-row{display:flex;gap:8px}
.filter-row select{flex:1;padding:10px 8px;border-radius:var(--radius-sm);border:1px solid var(--bg3);background:var(--bg2);color:var(--text);font-size:13px;-webkit-appearance:none;appearance:none;min-height:40px}
.trip-list{padding:8px 12px 20px}
.trip-card{background:var(--bg2);border-radius:var(--radius);padding:14px;margin-bottom:12px;cursor:pointer;transition:transform .1s,box-shadow .2s;border:1px solid var(--bg3);border-left:3px solid var(--bg4);animation:slideIn .3s ease backwards}
.trip-card.flight-card{border-left-color:var(--flight)}
.trip-card.train-card{border-left-color:var(--train)}
.trip-card:nth-child(1){animation-delay:0ms}
.trip-card:nth-child(2){animation-delay:40ms}
.trip-card:nth-child(3){animation-delay:80ms}
.trip-card:nth-child(4){animation-delay:120ms}
.trip-card:nth-child(5){animation-delay:160ms}
.trip-card:nth-child(n+6){animation-delay:200ms}
.trip-card:active{transform:scale(0.98);box-shadow:0 0 0 2px var(--accent)}
.trip-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.trip-date{font-size:12px;color:var(--text2)}
.trip-type{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600}
.trip-type.flight{background:var(--flight-bg);color:var(--flight)}
.trip-type.train{background:var(--train-bg);color:var(--train)}
.trip-route{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.trip-city{font-size:18px;font-weight:700}
.trip-arrow{color:var(--text3);font-size:14px;flex-shrink:0}
.trip-detail{font-size:12px;color:var(--text2)}
.trip-no{font-weight:600;color:var(--text)}
.trip-duration{margin-left:8px}
.trip-km{font-weight:700;color:var(--accent2);font-size:13px;float:right}

/* ===== Stats ===== */
.stats-grid{padding:12px}
.stat-card{background:var(--bg2);border-radius:var(--radius);padding:16px;margin-bottom:10px;border:1px solid var(--bg3);animation:slideIn .3s ease backwards}
.stat-card:nth-child(1){animation-delay:0ms}
.stat-card:nth-child(2){animation-delay:50ms}
.stat-card:nth-child(3){animation-delay:100ms}
.stat-card:nth-child(4){animation-delay:150ms}
.stat-card:nth-child(5){animation-delay:200ms}
.stat-card:nth-child(n+6){animation-delay:250ms}
.stat-card h4{font-size:13px;color:var(--text2);margin-bottom:12px;font-weight:500}
.stat-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--bg3)}
.stat-row:last-child{border:none}
.stat-label{color:var(--text2);font-size:13px}
.stat-value{font-weight:700;font-size:15px}
.stat-big{text-align:center;padding:16px 0}
.stat-big .num{font-size:36px;font-weight:800;background:linear-gradient(135deg,var(--flight),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-big .unit{font-size:13px;color:var(--text2);margin-top:4px}

/* Top cities / airlines bar charts */
.bar-chart{margin-top:8px}
.bar-item{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.bar-label{width:60px;font-size:12px;color:var(--text2);text-align:right;flex-shrink:0}
.bar-track{flex:1;height:22px;background:var(--bg3);border-radius:4px;overflow:hidden;position:relative}
.bar-fill{height:100%;border-radius:4px;transition:width .6s ease}
.bar-fill.flight{background:linear-gradient(90deg,var(--flight),#fbbf24)}
.bar-fill.train{background:linear-gradient(90deg,var(--train),#34d399)}
.bar-count{position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:11px;color:var(--text);font-weight:600}

/* Heatmap */
.heatmap-grid{display:grid;grid-template-columns:repeat(53,12px);gap:2px;margin-top:4px}
.heat-cell{width:12px;height:12px;border-radius:2px;background:var(--bg3)}
.heat-cell.l1{background:rgba(59,130,246,0.2)}
.heat-cell.l2{background:rgba(59,130,246,0.4)}
.heat-cell.l3{background:rgba(59,130,246,0.6)}
.heat-cell.l4{background:rgba(59,130,246,0.9)}
.heatmap-months{display:flex;font-size:9px;color:var(--text3);margin-top:4px;padding:0 2px}
.heatmap-months span{flex:1;text-align:center}

/* ===== Annual Report ===== */
.annual-header{display:flex;align-items:center;justify-content:center;gap:16px;padding:16px;position:sticky;top:0;background:var(--bg);z-index:5}
.annual-year{font-size:28px;font-weight:800;min-width:80px;text-align:center}
.annual-nav{background:none;border:1px solid var(--bg3);color:var(--text);width:40px;height:40px;border-radius:50%;cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center}
.annual-nav:active{background:var(--bg3)}
.annual-content{padding:0 16px 24px}
.annual-section{margin-bottom:24px}
.annual-section h3{font-size:15px;color:var(--accent2);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.annual-hero{text-align:center;padding:30px 0 20px;border-bottom:1px solid var(--bg3);margin-bottom:24px}
.annual-hero .big-num{font-size:64px;font-weight:900;background:linear-gradient(135deg,var(--flight),var(--train));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.annual-hero .sub{font-size:14px;color:var(--text2);margin-top:4px}
.annual-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.annual-stat-box{background:var(--bg2);border-radius:var(--radius-sm);padding:14px;text-align:center;border:1px solid var(--bg3)}
.annual-stat-box .val{font-size:24px;font-weight:800}
.annual-stat-box .label{font-size:11px;color:var(--text2);margin-top:2px}
.annual-empty{text-align:center;padding:60px 20px;color:var(--text3)}

/* ===== Modal ===== */
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:200;display:flex;align-items:flex-end;justify-content:center;animation:fadeIn .2s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.modal-content{background:var(--bg2);border-radius:var(--radius) var(--radius) 0 0;width:100%;max-width:500px;max-height:85vh;overflow-y:auto;animation:slideUp .3s ease;-webkit-overflow-scrolling:touch}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
.modal-large{max-height:90vh}
.modal-small{border-radius:var(--radius);margin:0 20px;max-width:320px;align-self:center}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid var(--bg3)}
.modal-header h3{font-size:16px;font-weight:700}
.modal-close{background:none;border:none;color:var(--text2);font-size:28px;cursor:pointer;padding:12px;min-width:48px;min-height:48px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.modal-close:active{background:var(--bg3)}
.modal-body{padding:16px}
.modal-footer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--bg3);position:sticky;bottom:0;background:var(--bg2);z-index:10}
.flex-spacer{flex:1}

/* ===== Form ===== */
.type-toggle{display:flex;gap:8px;margin-bottom:16px}
.type-btn{flex:1;padding:12px;border-radius:var(--radius-sm);border:1px solid var(--bg3);background:var(--bg);color:var(--text2);font-size:14px;cursor:pointer;transition:all .2s;min-height:44px}
.type-btn.active{border-color:var(--accent);background:rgba(59,130,246,0.1);color:var(--accent)}
.mode-btn{flex:1;padding:10px;border-radius:var(--radius-sm);border:1px solid var(--bg3);background:var(--bg);color:var(--text2);font-size:13px;cursor:pointer;transition:all .2s;min-height:40px}
.mode-btn.active{border-color:var(--accent);background:rgba(59,130,246,0.1);color:var(--accent)}
.form-row{display:flex;gap:10px;align-items:flex-end;margin-bottom:16px}
.form-group{flex:1;position:relative}
.form-group.arrow-sep{flex:0;font-size:20px;color:var(--text3);padding-bottom:8px;display:flex;align-items:flex-end}
label{display:block;font-size:12px;color:var(--text2);margin-bottom:4px}
input[type="text"],input[type="date"],input[type="time"],select,textarea{width:100%;padding:10px 12px;border-radius:var(--radius-sm);border:1px solid var(--bg3);background:var(--bg);color:var(--text);font-size:16px;outline:none;transition:border-color .2s;-webkit-appearance:none;appearance:none;min-height:44px}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
textarea{resize:none;font-family:inherit}
.search-results{position:absolute;top:100%;left:0;right:0;background:var(--bg2);border:1px solid var(--bg3);border-radius:var(--radius-sm);max-height:200px;overflow-y:auto;z-index:50;display:none;-webkit-overflow-scrolling:touch}
.search-results.show{display:block}
.search-result{padding:10px 12px;cursor:pointer;font-size:14px;border-bottom:1px solid var(--bg3);min-height:40px;display:flex;align-items:center;gap:8px}
.search-result:active{background:var(--bg3)}
.search-result .code{font-weight:700;color:var(--accent)}
.search-result .name{color:var(--text2)}

/* ===== Buttons ===== */
.btn{padding:12px 20px;border-radius:var(--radius-sm);border:none;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;min-height:44px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:active{background:#2563eb}
.btn-secondary{background:var(--bg3);color:var(--text)}
.btn-danger{background:var(--danger);color:#fff}
.btn-full{width:100%;margin-bottom:8px;background:var(--bg3);color:var(--text);text-align:left;padding:12px 16px;border-radius:var(--radius-sm);border:none;font-size:14px;cursor:pointer;min-height:44px}
.btn-full:active{background:var(--bg4)}
.btn-theme{background:var(--bg3);color:var(--text2);border:2px solid transparent;padding:10px;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;transition:all .2s}
.btn-theme.active{border-color:var(--accent);color:var(--accent);background:rgba(59,130,246,0.1)}
.quick-action-btn{display:block;width:100%;text-align:left;padding:12px 16px;background:none;border:none;color:var(--text);font-size:14px;cursor:pointer;border-radius:8px;transition:background .15s}
.quick-action-btn:active{background:var(--bg3)}

/* ===== Settings ===== */
.settings-section{margin-bottom:24px}
.settings-section h4{font-size:14px;color:var(--text2);margin-bottom:12px}
.about-text{font-size:13px;color:var(--text3);line-height:1.6}

/* ===== Empty State ===== */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;text-align:center}
.empty-icon{font-size:64px;margin-bottom:20px}
.empty-text{font-size:18px;font-weight:600;margin-bottom:10px}
.empty-sub{font-size:14px;color:var(--text2);line-height:1.6}

/* ===== Trip Detail ===== */
.detail-boarding{text-align:center;padding:20px 0;border-bottom:1px dashed var(--bg3);margin-bottom:16px;position:relative}

/* ===== Toast ===== */
.toast{position:fixed;top:calc(var(--header-h)+16px);left:50%;transform:translateX(-50%);background:var(--bg3);color:var(--text);padding:10px 20px;border-radius:20px;font-size:13px;z-index:9999;opacity:0;transition:opacity .3s;pointer-events:none;backdrop-filter:blur(4px);box-shadow:0 4px 12px rgba(0,0,0,0.2)}
.toast.show{opacity:1;pointer-events:auto}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bg4);border-radius:2px}

/* ===== Mobile Responsive ===== */
@media (max-width: 414px) {
  .app-title{font-size:15px}
  .trip-city{font-size:16px}
  .stat-big .num{font-size:30px}
  .annual-hero .big-num{font-size:52px}
  .annual-stat-box .val{font-size:20px}
  .bar-label{width:50px;font-size:11px}
  .stat-card{padding:12px}
  .annual-content{padding:0 12px 20px}
  .form-row{gap:8px}
  .form-group label{font-size:12px}
  .form-group input,.form-group select,.form-group textarea{font-size:14px}
  .form-group.arrow-sep{font-size:16px;padding-bottom:4px}
  .modal-content{max-height:92vh;border-radius:16px 16px 0 0}
  #mapControls{right:8px;bottom:70px}
  .map-btn{width:44px;height:44px;font-size:20px}
}

@media (max-width: 375px) {
  .trip-city{font-size:15px}
  .stat-big .num{font-size:26px}
  .filter-row{gap:4px}
  .filter-row select{font-size:12px;padding:8px 4px}
  .annual-stat-grid{gap:6px}
  .annual-stat-box{padding:10px}
  .annual-stat-box .val{font-size:18px}
}

/* Large screen center */
@media (min-width: 768px) {
  .modal-content{border-radius:var(--radius);margin-bottom:10vh}
  .modal{align-items:center}
}

/* Landscape phone */
@media (max-height: 500px) and (orientation: landscape) {
  :root{--header-h:40px;--tab-h:44px}
  .annual-hero{padding:16px 0 12px}
  .annual-hero .big-num{font-size:40px}
}

/* ===== PWA Install Banner ===== */
.pwa-banner{position:fixed;bottom:calc(var(--tab-h) + 12px + var(--safe-bottom));left:12px;right:12px;z-index:150;animation:slideIn .4s ease}
.pwa-banner-content{display:flex;align-items:center;justify-content:space-between;gap:10px;background:rgba(17,24,39,0.92);border:1px solid var(--accent);border-radius:14px;padding:12px 14px;backdrop-filter:blur(12px);box-shadow:0 4px 24px rgba(0,0,0,0.4)}
.light .pwa-banner-content{background:rgba(255,255,255,0.95);box-shadow:0 4px 24px rgba(0,0,0,0.12)}
.pwa-banner-text{font-size:13px;color:var(--text);flex:1;min-width:0}
.pwa-banner-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}
.pwa-banner-btn{padding:8px 16px;font-size:13px;min-height:44px;border-radius:10px}
.pwa-banner-close{background:none;border:none;color:var(--text3);font-size:22px;cursor:pointer;padding:8px;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.pwa-banner-close:active{background:var(--bg3)}
/* Prevent PWA banner from covering view content */
.pwa-banner-visible .view.active{padding-bottom:60px}


/* Onboarding dots */
.onboard-dot{width:8px;height:8px;border-radius:50%;background:var(--bg3);transition:all .3s}
.onboard-dot.active{width:24px;border-radius:4px;background:var(--accent)}

/* Form validation error highlight */
.form-error {
  outline: 2px solid #ef4444 !important;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.2) !important;
  animation: shake 0.3s ease;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Form progressive disclosure */
.form-toggle{text-align:center;padding:12px;color:var(--accent);font-size:13px;cursor:pointer;border:1px dashed var(--bg3);border-radius:var(--radius-sm);margin:8px 0;transition:all .2s;min-height:44px;display:flex;align-items:center;justify-content:center}
.form-toggle:active{background:rgba(59,130,246,0.08)}
.form-toggle.expanded{border-style:solid;color:var(--text3)}
.form-extra{animation:slideIn .3s ease}

/* ===== P1 Enhancements ===== */
/* P1-1: Light mode card shadow */
.light .trip-card {
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.08);
}

/* P1-1b: Light mode tab nav glass effect */
.light #tabNav {
  background: rgba(245,245,247,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(0,0,0,0.06);
}

/* P1-2: Placeholder brightness */
input::placeholder, textarea::placeholder {
  color: var(--text2);
  opacity: 0.7;
}

/* P1-3: Dark mode map button border - integrated into .map-btn above */
.light .map-btn {
  border: 1px solid rgba(0, 0, 0, 0.06);
}

/* P1-4: Modal drag handle */
.modal-content::before {
  content: '';
  display: block;
  width: 36px;
  height: 4px;
  background: var(--bg4, #374151);
  border-radius: 2px;
  margin: 8px auto 4px;
}
.modal-small::before {
  display: none;
}

/* P2-1: Light mode stat card shadows */
.light .stat-card, .light .annual-stat-box {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* P2-2: Tab view fade transition - integrated into .view above */

/* P2-3: Search focus glow */
#tripSearch:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}