:root{--ink:#213044;--muted:#708096;--bg:#f4f6f8;--card:#fff;--blue:#465f91;--red:#ce2a26;--line:#dde3e9;--shadow:0 10px 30px #25365012}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}header{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 max(24px,calc((100% - 1180px)/2));gap:42px;position:sticky;top:0;z-index:5}.brand{font-size:18px;font-weight:750;display:flex;align-items:center;gap:10px}.brand span{display:grid;place-items:center;background:var(--blue);color:#fff;border-radius:12px;width:38px;height:38px}.brand img{width:42px;height:42px;object-fit:contain;border-radius:8px}nav{display:flex;gap:5px;flex:1}nav a{padding:9px 13px;border-radius:9px;color:#536277}nav a:hover{background:#eef1f5}.account{font-size:13px;display:flex;align-items:center;gap:10px}main{max-width:1180px;margin:0 auto;padding:42px 24px;min-height:calc(100vh - 130px)}footer{text-align:center;color:#97a3b2;font-size:12px;padding:20px}.hero,.calendar-head,.detail-top,.section-head{display:flex;justify-content:space-between;align-items:center}.hero{padding:8px 0 28px}.hero h1,.calendar-head h1{font-size:34px;margin:2px 0}.hero p{margin:4px 0;color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--blue);font-weight:800;font-size:11px}.eyebrow.red{color:var(--red)}button,.button{border:0;border-radius:10px;padding:11px 16px;font:inherit;font-weight:700;cursor:pointer}.primary{background:var(--blue);color:#fff}.secondary{background:#e9edf2;color:#3c4e64}.danger{background:#fff0f0;color:#b52727}.link{padding:0;background:none;color:var(--muted)}.stats{display:flex;gap:12px;margin-bottom:30px}.stats div{background:#fff;border:1px solid var(--line);border-radius:13px;padding:15px 20px;display:flex;gap:10px;align-items:baseline}.stats strong{font-size:25px}.stats span{color:var(--muted)}.columns{display:grid;grid-template-columns:1.2fr .8fr;gap:28px}.section-head h2{margin:2px 0 14px}.event-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--event);border-radius:13px;padding:15px;display:flex;align-items:center;gap:15px;margin-bottom:10px;box-shadow:var(--shadow)}.event-date{width:70px;text-align:center;border-right:1px solid var(--line);padding-right:15px}.event-date b{font-size:25px;display:block}.event-date span{font-size:0}.event-date span:before{content:"Tag";font-size:11px;color:var(--muted)}.event-info{flex:1}.event-info h3{margin:5px 0 0}.event-info p{margin:0;color:var(--muted);font-size:13px}.pill{display:inline-block;color:#fff;padding:2px 7px;border-radius:20px;font-size:10px;font-weight:800}.claim{background:#fff1f0;color:var(--red);white-space:nowrap}.mini-event{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);padding:13px;border-radius:11px;margin-bottom:8px}.mini-event i{width:7px;height:38px;border-radius:5px}.mini-event b,.mini-event span{display:block}.mini-event span{font-size:12px;color:var(--muted)}.empty{padding:30px;border:1px dashed #cbd3dd;border-radius:12px;text-align:center;color:var(--muted)}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow)}.auth{max-width:430px;margin:60px auto}.auth h1,.form-card h1{margin:4px 0}.muted{color:var(--muted)}form label{display:block;font-weight:650;margin:14px 0 5px}input,select,textarea{display:block;width:100%;margin-top:5px;border:1px solid #cbd3dc;border-radius:9px;padding:11px;background:#fff;color:var(--ink);font:inherit}input:focus,select:focus,textarea:focus{outline:2px solid color-mix(in srgb,var(--blue),white 35%);border-color:transparent}small{display:block;color:var(--muted);font-weight:400}.auth button{width:100%;margin-top:20px}.flash{padding:12px 16px;border-radius:10px;margin-bottom:18px}.flash.success{background:#e7f5ec;color:#247044}.flash.error{background:#ffeded;color:#9d2727}.form-card{max-width:700px;margin:auto}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-row.three{grid-template-columns:repeat(3,1fr)}.actions{display:flex;align-items:center;gap:10px;margin-top:22px;flex-wrap:wrap}.hint{color:var(--muted);font-size:12px;margin:4px 0}.calendar-head{max-width:500px;margin:0 auto 22px;text-align:center}.calendar-head h1{font-size:28px}.arrow{font-size:34px;background:#fff;border:1px solid var(--line);width:45px;height:45px;line-height:38px;border-radius:50%}.cal{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}.weekdays,.week{display:grid;grid-template-columns:repeat(7,1fr)}.weekdays{background:#edf0f4;color:var(--muted);text-align:center;padding:10px}.week{border-top:1px solid var(--line)}.day{min-height:125px;border-right:1px solid var(--line);padding:7px;min-width:0}.day:last-child{border:0}.day-num{display:flex;justify-content:space-between}.day-num span{display:grid;place-items:center;width:27px;height:27px}.day.today .day-num span{background:var(--red);color:#fff;border-radius:50%}.day-num a{color:#9ba6b3;font-size:20px}.cal-event{display:block;margin-top:5px;border-left:3px solid var(--event);background:#f3f5f7;border-radius:5px;padding:4px 5px;font-size:11px;overflow:hidden}.cal-event.open{background:#fff0ef}.cal-event small{white-space:nowrap}.detail{border-top:5px solid var(--event);max-width:780px;margin:auto}.detail h1{font-size:30px;margin:10px 0 0}.big-date{font-size:17px}.description{padding:15px;background:#f5f7f9;border-radius:10px}dl{display:flex;gap:50px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0}dt{font-size:11px;text-transform:uppercase;color:var(--muted);font-weight:800}dd{margin:3px 0;font-weight:700}.status{padding:5px 9px;border-radius:8px}.done{background:#e2f4e8;color:#2b7545}.pending{background:#ffebe9;color:#b82c28}.history{max-width:780px;margin:25px auto}.history>div{display:flex;gap:10px;padding:8px}.history i{width:9px;height:9px;background:#9aa7b7;border-radius:50%;margin-top:7px}.history span small{display:inline;margin-left:8px}.admin-grid{grid-template-columns:1fr 1fr}.table>div{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #edf0f3}.table>div span:first-of-type{flex:1}.table b,.table small{display:block}.tag{background:#edf0f5;padding:4px 8px;border-radius:6px;font-size:11px}.color{width:14px;height:34px;border-radius:6px}.card hr{border:0;border-top:1px solid var(--line);margin:24px 0}.check{display:flex;align-items:center;gap:8px}.check input{width:auto;margin:0}.admin-tabs{position:sticky;top:80px;z-index:3;background:#fffc;border:1px solid var(--line);backdrop-filter:blur(12px);border-radius:12px;padding:6px;margin-bottom:24px;overflow:auto}.admin-tabs a{white-space:nowrap}.admin-section{margin:26px 0;scroll-margin-top:150px}.current-image{display:flex;align-items:center;gap:10px;margin-top:10px;font-size:12px;color:var(--muted)}.current-image img{width:55px;height:55px;object-fit:contain;border:1px solid var(--line);border-radius:8px}.background-preview{height:55px;padding:8px;background-size:cover;background-position:center;border-radius:8px;color:#fff;text-shadow:0 1px 3px #000}.audit-table{overflow:auto}.audit-table>div{display:grid;grid-template-columns:145px 120px minmax(150px,1fr) 160px minmax(160px,1fr);gap:12px;padding:10px;border-bottom:1px solid var(--line);min-width:820px}.audit-head{background:#edf0f4;border-radius:8px;font-size:12px}.audit-table a{color:var(--blue);font-weight:700}
@media(max-width:800px){header{height:auto;flex-wrap:wrap;padding:12px 16px;gap:8px}.brand{flex:1}nav{order:3;width:100%;overflow:auto}.account{font-size:0}.account button{font-size:12px}main{padding:25px 14px}.columns,.admin-grid{grid-template-columns:1fr}.hero h1{font-size:28px}.stats{overflow:auto}.event-card{align-items:flex-start;flex-wrap:wrap}.event-info{min-width:200px}.event-card form{margin-left:85px}.weekdays{padding:7px 0}.day{min-height:86px;padding:3px}.cal-event{font-size:0;padding:4px 2px}.cal-event b{font-size:9px}.cal-event small{display:none}.form-row,.form-row.three{grid-template-columns:1fr}.detail-top{align-items:flex-start;gap:10px}.detail-top h1{font-size:25px}dl{display:block}dl div+div{margin-top:12px}.admin-tabs{top:125px}}

/* V2.1 calendar interaction and theme */
.calendar-hint{margin:.25rem 0 0;color:var(--muted);font-size:12px}.week{position:relative;min-height:calc(48px + var(--lanes) * 26px + 86px)}.week-days{display:grid;grid-template-columns:repeat(7,1fr);height:100%}.day{min-height:160px;cursor:crosshair;transition:background .08s}.day.selected{background:color-mix(in srgb,var(--blue),transparent 88%)}.day-plus{border:0;background:transparent;color:#9ba6b3;font-size:20px;padding:0;cursor:pointer}.week-events{position:absolute;left:0;right:0;top:38px;pointer-events:none;display:grid;grid-template-columns:repeat(7,1fr);grid-auto-rows:24px;z-index:2}.cal-event{grid-column:var(--start)/var(--end);grid-row:calc(var(--lane) + 1);margin:1px 3px 1px 3px;pointer-events:auto;white-space:nowrap;text-overflow:ellipsis}.cal-event.continued-left{border-top-left-radius:0;border-bottom-left-radius:0}.cal-event.continued-right{border-top-right-radius:0;border-bottom-right-radius:0}.modal-backdrop{position:fixed;inset:0;background:#17233766;backdrop-filter:blur(4px);z-index:50;display:grid;place-items:center;padding:20px}.modal-backdrop[hidden]{display:none}.modal{position:relative;width:min(680px,100%);max-height:90vh;overflow:auto}.modal h2{margin:4px 0}.modal-close{position:absolute;right:14px;top:10px;border:0;background:transparent;font-size:30px;color:var(--muted);padding:2px 8px}.theme-toggle{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px;padding:5px 8px}.auth-link{text-align:center;margin-top:18px;font-size:13px;color:var(--blue)}details{margin-top:10px;border-top:1px solid var(--line);padding-top:8px}summary{cursor:pointer;color:var(--blue);font-weight:700}.small-button{padding:6px 9px;font-size:12px}.user-row{align-items:flex-start!important;flex-wrap:wrap}.user-row details{width:100%}
html.dark{--ink:#e7ecf4;--muted:#9aa9bc;--bg:#111722;--card:#1b2431;--line:#303b4b;--blue:#7696d1;--red:#ee6964;--shadow:0 10px 30px #0008}html.dark header,html.dark .cal,html.dark .weekdays,html.dark input,html.dark select,html.dark textarea{background:var(--card);color:var(--ink)}html.dark .secondary{background:#303b4b;color:#e7ecf4}html.dark .day.selected{background:#7696d122}html.dark .cal-event{background:#273241}html.dark .cal-event.open{background:#402725}html.dark .description{background:#232e3d}html.dark .admin-tabs{background:#111722dd}html.dark .stats div,html.dark .event-card,html.dark .mini-event,html.dark .card,html.dark .arrow{background:var(--card)}html.dark .weekdays{background:#202a38}
@media(max-width:800px){.calendar-head{gap:8px}.calendar-head h1{font-size:21px}.day{min-height:100px}.week{min-height:calc(38px + var(--lanes) * 24px + 55px)}.week-events{top:32px}.cal-event{font-size:10px}.cal-event b{font-size:9px}.account{gap:5px}}

/* V2.2: calendar layout and responsive navigation */
.main-nav{display:flex;align-items:center;gap:4px;flex:1;min-width:0}
.main-nav .nav-item{display:flex;align-items:center;justify-content:center;white-space:nowrap;min-height:42px;padding:9px 14px;border-radius:9px;color:#536277;position:relative;z-index:10;touch-action:manipulation}
.main-nav .nav-item:hover{background:#eef1f5}
.week{position:relative;display:block;min-height:0;height:calc(150px + (var(--lanes) - 1) * 25px)}
.week-days{position:absolute;inset:0;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));height:100%;z-index:0}
.week-days .day{height:100%;min-height:0;cursor:crosshair;padding:7px;border-right:1px solid var(--line);overflow:hidden}
.week-events{position:absolute;left:0;right:0;top:40px;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));grid-auto-rows:24px;z-index:2;pointer-events:none;padding:0 1px}
.week-events .cal-event{min-width:0;margin:1px 2px;padding:3px 5px;line-height:18px;height:22px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.week-events .cal-event .event-title{overflow:hidden;text-overflow:ellipsis}
.week-events .cal-event small{display:none}
.day.selected{background:color-mix(in srgb,var(--blue),transparent 88%)}
.day-plus{opacity:.35;transition:opacity .15s,background .15s}
.day:hover .day-plus,.day-plus:focus{opacity:1;background:#edf1f6;border-radius:6px}

@media(max-width:800px){
  header{display:grid;grid-template-columns:1fr auto;grid-template-areas:"brand account" "nav nav";align-items:center;gap:8px;padding:9px 10px;min-height:70px}
  .brand{grid-area:brand;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
  .account{grid-area:account;justify-self:end}
  .main-nav{grid-area:nav;width:100%;display:grid;grid-template-columns:1fr 1fr 1fr;gap:4px;overflow:visible}
  .main-nav .nav-item{min-height:44px;padding:8px 5px;background:#f1f4f7;border:1px solid var(--line);font-size:14px;font-weight:750;color:var(--ink)}
  .main-nav .nav-item:hover,.main-nav .nav-item:active{background:#e5eaf0}
  .main-nav .nav-calendar{background:var(--blue);color:#fff}
  .week{height:calc(105px + (var(--lanes) - 1) * 23px)}
  .weekdays{font-size:11px;padding:7px 0}
  .week-events{top:34px;grid-auto-rows:22px}
  .week-events .cal-event{height:20px;line-height:16px;font-size:9px;margin:1px;padding:2px 3px}
  .week-events .cal-event b{font-size:8px}
  .week-events .cal-event .event-title{display:inline}
  .week-days .day{padding:3px}
  .day-num span{width:24px;height:24px;font-size:12px}
  .day-plus{font-size:17px}
  .calendar-head{margin-bottom:12px}
  .calendar-head .calendar-hint{display:none}
  .cal{border-radius:10px}
}

html.dark .main-nav .nav-item{color:var(--ink)}
html.dark .main-nav .nav-item:hover{background:#2b3645}
html.dark .main-nav .nav-calendar{background:var(--blue);color:#fff}
html.dark .day-plus{color:var(--muted)}
html.dark .day:hover .day-plus{background:#303b4b}