base.css

:root{
  --bg:#f6f8fc;--surface:#fff;--surface-2:#f9fbfe;--text:#172033;--muted:#6f7b91;--line:#e4e9f1;--line-2:#d6deea;
  --primary:#2563eb;--primary-2:#1d4ed8;--primary-soft:#edf3ff;--success:#16865d;--success-soft:#eaf8f2;--warning:#b7791f;--warning-soft:#fff7e7;
  --danger:#cf4545;--shadow:0 8px 24px rgba(31,50,81,.06);--r:14px;--r-lg:20px;--sidebar:214px;
  --font:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Arial,sans-serif;
}
[data-theme="dark"]{--bg:#0d1421;--surface:#141d2c;--surface-2:#182333;--text:#eef3fb;--muted:#9aa8bc;--line:#28364a;--line-2:#394a63;--primary:#72a0ff;--primary-2:#91b5ff;--primary-soft:#1c3158;--success:#58d39b;--success-soft:#12392b;--warning:#efbd67;--warning-soft:#45331b;--danger:#ff8181;--shadow:0 12px 30px rgba(0,0,0,.22)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}svg{display:block}.app{min-height:100vh;display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;background:var(--surface);border-right:1px solid var(--line);padding:20px 12px 16px;display:flex;flex-direction:column;z-index:40}.brand{height:44px;display:flex;align-items:center;gap:10px;padding:0 10px;font-size:17px;font-weight:800;letter-spacing:-.03em}.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--primary);color:white;display:grid;place-items:center}.brand-mark svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.side-nav{display:grid;gap:3px;margin-top:24px}.side-nav a,.sidebar-action{min-height:40px;border:0;background:transparent;border-radius:9px;padding:0 11px;display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;font-weight:650;text-align:left}.side-nav a:hover,.sidebar-action:hover{background:var(--surface-2);color:var(--text)}.side-nav a.active{background:var(--primary-soft);color:var(--primary)}.nav-icon{width:18px;height:18px;display:grid;place-items:center;flex:0 0 auto}.nav-icon svg,.ui-icon{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.sidebar-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}.main{min-width:0}.topbar{height:64px;position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px}.crumb{display:flex;align-items:center;gap:9px;min-width:0}.crumb strong{font-size:13px}.crumb span{font-size:12px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:8px}.icon-btn{width:36px;height:36px;border:1px solid var(--line);border-radius:9px;background:var(--surface);display:grid;place-items:center;color:var(--muted)}.icon-btn:hover{color:var(--text);border-color:var(--line-2)}.content{width:min(1240px,calc(100% - 44px));margin:0 auto;padding:24px 0 56px}.mobile-header,.mobile-bottom{display:none}
.btn{min-height:36px;padding:0 13px;border:1px solid var(--line);border-radius:9px;background:var(--surface);display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:12px;font-weight:700}.btn:hover{border-color:var(--line-2);background:var(--surface-2)}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-2);border-color:var(--primary-2)}.btn.sm{min-height:32px;padding:0 10px;font-size:11px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 1px 2px rgba(16,24,40,.03)}.card-head{min-height:50px;padding:0 17px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.card-head h2,.card-head h3{margin:0;font-size:14px;letter-spacing:-.01em}.card-head a{font-size:11px;color:var(--primary);font-weight:700}.label{font-size:11px;color:var(--muted);font-weight:650}.pill{display:inline-flex;align-items:center;min-height:22px;padding:0 7px;border-radius:999px;border:1px solid var(--line);background:var(--surface-2);color:var(--muted);font-size:10.5px;font-weight:700}.pill.success{border-color:transparent;background:var(--success-soft);color:var(--success)}.pill.primary{border-color:transparent;background:var(--primary-soft);color:var(--primary)}.pill.warning{border-color:transparent;background:var(--warning-soft);color:var(--warning)}
.trip-hero{min-height:222px;border-radius:var(--r-lg);overflow:hidden;position:relative;background:#173e7a url('./assets/china-hero.svg') center/cover no-repeat;color:#fff;box-shadow:var(--shadow);display:grid;grid-template-columns:minmax(0,1fr) 170px}.trip-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,34,77,.83),rgba(8,40,88,.38) 62%,rgba(7,26,59,.24));pointer-events:none}.hero-copy{position:relative;z-index:1;padding:30px 32px;align-self:center}.hero-kicker{font-size:11px;font-weight:700;opacity:.82}.hero-copy h1{margin:7px 0 7px;font-size:29px;line-height:1.14;letter-spacing:-.035em}.hero-route{font-size:14px;font-weight:650}.hero-meta{margin-top:5px;font-size:12px;opacity:.82}.hero-actions{display:flex;gap:8px;margin-top:18px}.hero-actions .btn{background:#fff;color:#174da8;border-color:#fff}.hero-actions .btn.secondary{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.34);backdrop-filter:blur(8px)}.countdown{position:relative;z-index:1;margin:22px 20px 22px 0;border-radius:13px;background:rgba(255,255,255,.94);color:var(--text);display:grid;place-items:center;text-align:center;padding:15px}.countdown span{font-size:10.5px;color:var(--muted);font-weight:650}.countdown strong{display:block;font-size:38px;line-height:1;margin:6px 0 3px;letter-spacing:-.05em}.countdown b{font-size:11px;margin-top:8px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin-top:12px}.stat-card{padding:15px 16px;min-height:92px}.stat-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.stat-icon{width:32px;height:32px;border-radius:9px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center}.stat-icon svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}.stat-card strong{display:block;font-size:18px;margin-top:9px;letter-spacing:-.015em}.stat-card small{display:block;font-size:11px;color:var(--muted);margin-top:2px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1.42fr) minmax(300px,.78fr);gap:12px;margin-top:12px}.stack{display:grid;gap:12px}.timeline{padding:5px 17px 12px}.timeline-item{display:grid;grid-template-columns:48px 14px 1fr 56px;gap:9px;min-height:86px;padding:12px 0;position:relative}.timeline-item:not(:last-child):after{content:"";position:absolute;left:54px;top:39px;bottom:-12px;width:1px;background:var(--line-2)}.date-box{width:40px;height:44px;border:1px solid #bed0f4;border-radius:9px;background:var(--surface-2);color:var(--primary);display:grid;place-items:center;align-content:center}.date-box strong{font-size:15px;line-height:1}.date-box span{font-size:9px;font-weight:800;margin-top:3px}.time-dot{width:8px;height:8px;border:2px solid #8eb1f4;background:var(--surface);border-radius:50%;margin-top:15px;z-index:1}.timeline-info strong{font-size:12.5px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.timeline-info .sub{font-size:11px;color:var(--muted);margin-top:4px}.timeline-info .detail{font-size:11px;color:color-mix(in srgb,var(--text) 70%,var(--muted));margin-top:5px}.timeline-photo{height:48px;border-radius:8px;display:grid;place-items:center;color:rgba(255,255,255,.9);font-size:15px;font-weight:800}.timeline-photo.shanghai{background:linear-gradient(145deg,#426aa9,#8fb2e4)}.timeline-photo.beijing{background:linear-gradient(145deg,#984b3b,#d49a74)}.checklist{padding:9px 17px 15px}.check-item{min-height:34px;display:flex;align-items:center;gap:9px;font-size:12px}.check-item input{width:15px;height:15px;accent-color:var(--primary)}.progress{height:6px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:var(--primary);border-radius:999px;width:0}.progress-meta{display:flex;justify-content:space-between;font-size:10.5px;color:var(--muted);margin-top:6px}.budget{padding:13px 17px}.budget-total{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:10px}.budget-total span{display:block;font-size:10.5px;color:var(--muted)}.budget-total strong{display:block;font-size:17px;margin-top:2px}.budget-row{display:grid;grid-template-columns:1fr 112px;gap:10px;align-items:center;padding:8px 0;border-top:1px solid var(--line);font-size:11.5px}.budget-row input{width:100%;height:31px;border:1px solid var(--line);border-radius:7px;background:var(--surface-2);padding:0 8px;text-align:right;outline:none;font-size:11.5px}.budget-row input:focus{border-color:#8eb0f6;box-shadow:0 0 0 3px var(--primary-soft)}.notes-card{grid-column:1/-1}.notes-wrap{padding:13px 17px}.notes-wrap textarea{width:100%;min-height:94px;border:1px solid var(--line);border-radius:9px;background:var(--surface-2);padding:11px;outline:none;resize:vertical;font-size:12px}.notes-wrap textarea:focus{border-color:#8eb0f6;box-shadow:0 0 0 3px var(--primary-soft)}.notes-actions{display:flex;align-items:center;gap:7px;margin-top:9px}.save-state{margin-left:auto;font-size:10.5px;color:var(--muted)}
.flight-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:14px}.flight-head h1{margin:0;font-size:25px;line-height:1.2;letter-spacing:-.03em}.flight-head p{margin:5px 0 0;color:var(--muted);font-size:12.5px}.journey-card{padding:15px 17px;display:grid;grid-template-columns:1fr 24px 1fr;gap:14px;align-items:center}.journey-leg{min-width:0}.journey-leg .leg-label{font-size:10.5px;color:var(--primary);font-weight:800}.journey-cities{display:grid;grid-template-columns:1fr 30px 1fr;gap:8px;align-items:center;margin-top:10px}.airport strong{display:block;font-size:18px;letter-spacing:-.02em}.airport span{display:block;font-size:10.5px;color:var(--muted);margin-top:1px}.airport.right{text-align:right}.journey-arrow{text-align:center;color:var(--muted)}.journey-divider{width:1px;height:56px;background:var(--line);justify-self:center}.journey-meta{grid-column:1/-1;border-top:1px solid var(--line);padding-top:10px;margin-top:2px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:11px}.filter-bar{margin-top:11px;padding:10px;display:flex;align-items:center;gap:7px;flex-wrap:wrap;position:sticky;top:74px;z-index:20;box-shadow:var(--shadow)}.segmented{display:flex;gap:3px}.chip{min-height:32px;padding:0 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-size:11px;font-weight:700;color:var(--muted)}.chip.active{background:var(--primary);border-color:var(--primary);color:#fff}.filter-select,.filter-search{height:32px;border:1px solid var(--line);border-radius:8px;background:var(--surface);outline:none;font-size:11px}.filter-select{padding:0 28px 0 9px}.filter-search{width:190px;padding:0 10px}.filter-select:focus,.filter-search:focus{border-color:#8eb0f6;box-shadow:0 0 0 3px var(--primary-soft)}.sort-control{margin-left:auto;display:flex;align-items:center;gap:6px;color:var(--muted);font-size:10.5px}.flight-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:11px;margin-top:11px}.flight-stat{padding:14px 15px}.flight-stat strong{display:block;font-size:18px;margin-top:7px}.flight-stat small{display:block;font-size:11px;color:var(--muted);margin-top:2px}.flight-stat .meta-row{margin-top:9px;padding-top:8px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:8px;font-size:10px;color:var(--muted)}.results-card{margin-top:11px;overflow:hidden}.results-head{min-height:46px;padding:0 15px;border-bottom:1px solid var(--line);background:var(--surface-2);display:flex;align-items:center;justify-content:space-between;gap:12px}.results-head strong{font-size:12.5px}.results-head span{font-size:10.5px;color:var(--muted)}.route-section-title{padding:12px 15px 7px;font-size:11.5px;font-weight:800;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:10px}.flight-row{display:grid;grid-template-columns:170px minmax(310px,1fr) 175px;gap:16px;align-items:center;padding:14px 15px;border-bottom:1px solid var(--line)}.flight-row:last-child{border-bottom:0}.flight-row:hover{background:var(--surface-2)}.airline{display:flex;align-items:center;gap:9px;min-width:0}.airline-logo{width:36px;height:36px;border:1px solid var(--line);border-radius:8px;background:white;display:grid;place-items:center;overflow:hidden;flex:0 0 auto}.airline-logo img{max-width:100%;max-height:100%;object-fit:contain;padding:4px}.airline strong{display:block;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.airline span{display:block;font-size:10.5px;color:var(--muted);margin-top:2px}.flight-path{display:grid;grid-template-columns:64px minmax(110px,1fr) 64px;gap:9px;align-items:center}.flight-time strong{display:block;font-size:14px}.flight-time span{display:block;font-size:10.5px;color:var(--muted);margin-top:1px}.flight-time.right{text-align:right}.path-mid{text-align:center;min-width:0}.path-mid .duration{font-size:10.5px;color:var(--muted);margin-bottom:5px}.path-line{height:1px;background:var(--line-2);position:relative}.path-line:before,.path-line:after{content:"";position:absolute;top:50%;width:5px;height:5px;border-radius:50%;background:#9aabc3;transform:translateY(-50%)}.path-line:before{left:0}.path-line:after{right:0}.path-stop{font-size:10.5px;margin-top:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--warning);font-weight:700}.path-stop.direct{color:var(--success)}.fare{text-align:right}.fare-badge{display:inline-flex;margin-bottom:4px}.fare strong{display:block;font-size:16px}.fare small{display:block;font-size:10.5px;color:var(--muted);margin-top:2px}.fare .btn{margin-top:7px}.empty{padding:30px 18px;text-align:center;font-size:12px;color:var(--muted)}.history-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:11px;margin-top:11px}.chart-card,.range-card{padding:15px 16px}.chart-card h3,.range-card h3{margin:0;font-size:13px}.chart-card p,.range-card p{margin:4px 0 0;font-size:10.5px;color:var(--muted);line-height:1.55}.chart{width:100%;height:150px;margin-top:10px}.chart line{stroke:var(--line);stroke-width:1}.chart polyline{fill:none;stroke:var(--primary);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}.chart circle{fill:var(--primary);stroke:var(--surface);stroke-width:3}.range-value{font-size:17px;color:var(--primary);font-weight:800;margin:12px 0 9px}.range-track{height:8px;border-radius:999px;background:linear-gradient(90deg,#4fc789,#67b7ee 50%,#e5b75a 75%,#db5f5f);position:relative}.range-marker{position:absolute;top:-4px;width:16px;height:16px;border-radius:50%;background:var(--surface);border:4px solid var(--primary);box-shadow:0 1px 4px rgba(0,0,0,.12)}.range-labels{display:flex;justify-content:space-between;font-size:9.5px;color:var(--muted);margin-top:6px}.target-box{display:grid;grid-template-columns:1fr auto;gap:7px;margin-top:12px}.target-box input{height:32px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2);padding:0 9px;outline:none;font-size:11px}.alert{display:none;margin-top:8px;padding:8px 9px;border-radius:8px;background:var(--success-soft);color:var(--success);font-size:10.5px;font-weight:650}.alert.show{display:block}
@media(max-width:1040px){:root{--sidebar:188px}.content{width:min(100% - 32px,1180px)}.flight-row{grid-template-columns:150px 1fr 155px}.flight-stats{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:820px){.app{display:block}.sidebar,.topbar{display:none}.mobile-header{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}.mobile-header .brand{height:auto;padding:0;font-size:15px}.mobile-header .brand-mark{width:27px;height:27px}.mobile-header .right{display:flex;align-items:center;gap:7px}.content{width:min(100% - 22px,720px);padding:14px 0 84px}.trip-hero{grid-template-columns:1fr;min-height:200px}.hero-copy{padding:23px 22px}.hero-copy h1{font-size:24px}.hero-route{font-size:13px}.hero-meta{max-width:62%;font-size:11px}.countdown{position:absolute;right:12px;top:12px;width:92px;height:84px;margin:0;padding:8px}.countdown strong{font-size:27px}.countdown b{display:none}.hero-actions{margin-top:14px}.stat-grid{grid-template-columns:1fr 1fr;gap:8px}.dashboard-grid{grid-template-columns:1fr;gap:9px}.notes-card{grid-column:auto}.journey-card{grid-template-columns:1fr;gap:10px}.journey-divider{display:none}.journey-meta{grid-column:auto}.filter-bar{top:64px;box-shadow:0 6px 18px rgba(31,50,81,.08)}.flight-stats{grid-template-columns:1fr 1fr}.flight-stats .flight-stat:last-child{grid-column:1/-1}.flight-row{grid-template-columns:1fr;gap:10px}.airline{padding-bottom:9px;border-bottom:1px solid var(--line)}.fare{text-align:left;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;padding-top:9px;border-top:1px solid var(--line)}.fare .btn{margin:0}.history-grid{grid-template-columns:1fr}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:60;padding:6px 6px calc(6px + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--surface) 96%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--line)}.mobile-bottom a{min-height:44px;display:grid;place-items:center;gap:2px;color:var(--muted);font-size:9px;font-weight:700}.mobile-bottom a.active{color:var(--primary)}.mobile-bottom svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8}}
@media(max-width:520px){.content{width:calc(100% - 18px)}.hero-copy{padding:19px}.hero-copy h1{font-size:21px}.hero-actions .btn{min-height:33px;padding:0 10px}.stat-card{padding:13px}.stat-card strong{font-size:16px}.timeline{padding-inline:11px}.timeline-item{grid-template-columns:44px 12px 1fr;gap:7px}.timeline-item:not(:last-child):after{left:49px}.timeline-photo{display:none}.notes-actions{flex-wrap:wrap}.save-state{width:100%;margin-left:0}.flight-head h1{font-size:22px}.flight-head .btn{display:none}.filter-bar{align-items:stretch}.segmented{width:100%;display:grid;grid-template-columns:repeat(3,1fr)}.chip{width:100%}.filter-search{width:100%}.filter-select{flex:1;min-width:0}.sort-control{width:100%;margin-left:0;justify-content:space-between}.flight-stats{grid-template-columns:1fr}.flight-stats .flight-stat:last-child{grid-column:auto}.flight-path{grid-template-columns:54px 1fr 54px}.results-head{align-items:flex-start;padding:10px 12px}.results-head span{text-align:right}.chart{height:128px}}