/* Seasonal theme selector + lightweight, polished falling-leaf canvas. */
.season-picker{position:relative;display:inline-flex;align-items:center;flex:0 0 auto;z-index:120}
.season-picker .season-trigger{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:8px 15px;border:1px solid rgba(104,164,193,.32);border-radius:999px;background:linear-gradient(145deg,rgba(255,255,255,.9),rgba(229,242,249,.78));color:#164569;box-shadow:0 4px 14px rgba(23,76,108,.09),inset 0 1px 0 rgba(255,255,255,.9);font:750 12px/1 system-ui,sans-serif;letter-spacing:.065em;white-space:nowrap;cursor:pointer;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .3s ease}
.season-picker .season-trigger:hover,.season-picker .season-trigger[aria-expanded="true"]{transform:translateY(-1px);border-color:#51a6ce;box-shadow:0 7px 20px rgba(19,91,128,.16),inset 0 1px 0 #fff}
.season-trigger-icon{font-size:15px;color:#348cb7}.season-chevron{font-size:15px;line-height:10px;transition:transform .22s ease}.season-trigger[aria-expanded="true"] .season-chevron{transform:rotate(180deg)}
html[data-theme="dark"] .season-picker .season-trigger{background:linear-gradient(145deg,rgba(29,56,76,.96),rgba(14,35,51,.93));border-color:rgba(150,204,229,.26);color:#e8f6ff;box-shadow:0 4px 14px rgba(0,0,0,.2),inset 0 1px 0 rgba(255,255,255,.12)}
.season-menu{position:absolute;left:0;top:calc(100% + 11px);z-index:150;width:min(310px,calc(100vw - 30px));padding:10px;border:1px solid rgba(112,171,199,.27);border-radius:18px;background:rgba(250,253,255,.97);color:#173950;box-shadow:0 18px 55px rgba(10,36,55,.24),inset 0 1px 0 #fff;backdrop-filter:blur(20px) saturate(1.3);-webkit-backdrop-filter:blur(20px) saturate(1.3);transform-origin:top left;animation:season-menu-in .2s cubic-bezier(.2,.75,.2,1) both}
html[data-theme="dark"] .season-menu{background:rgba(13,30,43,.97);border-color:rgba(135,193,222,.24);color:#ecf7ff;box-shadow:0 18px 55px rgba(0,0,0,.48),inset 0 1px 0 rgba(255,255,255,.09)}
.season-menu[hidden]{display:none!important}.season-menu-heading{padding:7px 10px 10px;font-size:9px;font-weight:800;letter-spacing:.14em;opacity:.58}.season-option{position:relative;display:flex;width:100%;align-items:center;gap:11px;padding:10px;border:1px solid transparent;border-radius:12px;background:transparent;color:inherit;text-align:left;cursor:pointer;transition:background .18s ease,border-color .18s ease,transform .18s ease}.season-option:hover,.season-option:focus-visible{background:rgba(54,145,184,.1);border-color:rgba(69,154,190,.25);transform:translateX(2px)}.season-option-icon{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border-radius:11px;background:linear-gradient(145deg,#fff3d3,#f4b747);font-size:19px}.season-option-copy{display:grid;gap:3px;min-width:0}.season-option-copy strong{font-size:12px;letter-spacing:.06em}.season-option-copy small{font-size:10px;line-height:1.35;opacity:.68}.season-option-check{margin-left:auto;color:#4eaa66;opacity:0}.season-option[aria-checked="true"] .season-option-check{opacity:1}.season-option-reset{margin-top:2px}.season-option-reset .season-option-icon{background:linear-gradient(145deg,#eff5f8,#d5e4ec);color:#607888}
#autumnLeafCanvas{position:fixed;inset:0;z-index:100;display:block;width:100%;height:100%;pointer-events:none;contain:strict}
@keyframes season-menu-in{from{opacity:0;transform:translateY(-5px) scale(.98)}to{opacity:1;transform:none}}
@media(max-width:1180px){header nav .season-picker{display:inline-flex}}
@media(max-width:980px){header nav .season-picker{flex:0 0 auto;position:relative}header nav .season-picker .season-trigger{min-height:28px;padding:5px 9px;font-size:10px;gap:4px}header nav .season-trigger-icon{font-size:12px}header nav .season-chevron{font-size:12px}header nav .season-menu{position:fixed;left:10px;top:72px;bottom:auto;transform-origin:top left;width:min(310px,calc(100vw - 20px))}}
@media(max-width:520px){header nav .season-picker .season-trigger{min-height:25px;padding:4px 6px;font-size:9px;letter-spacing:.03em}header nav .season-option{padding:9px}}
@media(prefers-reduced-motion:reduce){.season-picker .season-trigger,.season-chevron,.season-option{transition:none}.season-menu{animation:none}}
#autumnLeafCanvas[hidden]{display:none!important}
.season-snow-icon{color:#168bb7!important;background:linear-gradient(145deg,#f7fdff,#bfe9f8)!important;box-shadow:inset 0 0 0 1px rgba(89,181,216,.16)}
#snowThemeOption[aria-checked="true"]{border-color:rgba(74,166,207,.34);background:rgba(79,177,218,.11)}
html[data-season="snow"] .season-trigger-icon{color:#79c9e8}