/* 동창수첩 — 화면 스타일 */
:root{
  --ivory:#f6f1e6; --ivory2:#ece5d6; --paper:#fbf8f1; --ink:#26261f; --muted:#6f6a5e; --line:#e1d9c9;
  --green:#2f4b3b; --green2:#3e6450; --green-soft:#e2eadf;
  --warn:#9d3f2b; --warn-bg:#fbe9e2;
  --glass:rgba(40,34,27,.36); --glass-line:rgba(255,255,255,.34);
  --shadow:0 18px 48px rgba(32,22,10,.32);
  --font:'Noto Sans KR',-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;
  --hand:'Gaegu','Noto Sans KR',cursive;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:#3a3026;color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
[hidden]{display:none!important}
#scene{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;outline:none}
.vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(120% 90% at 50% 45%,transparent 55%,rgba(40,22,5,.28) 100%);z-index:1}

/* ---------- floating glass UI ---------- */
.glass{background:var(--glass);-webkit-backdrop-filter:blur(14px) saturate(1.15);backdrop-filter:blur(14px) saturate(1.15);border:1px solid var(--glass-line);color:#fff;box-shadow:0 6px 24px rgba(20,12,4,.18)}
.top-left{position:fixed;top:max(14px,env(safe-area-inset-top));left:max(14px,env(safe-area-inset-left));z-index:20;display:flex;flex-direction:column;gap:8px;align-items:flex-start;max-width:calc(100vw - 130px)}
.school-pill{display:flex;align-items:center;gap:10px;height:46px;padding:0 16px 0 12px;border-radius:999px;max-width:100%}
.school-pill .ico{width:22px;height:22px;flex:none;opacity:.95}
.school-pill .name{font-weight:700;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.school-pill .caret{width:14px;height:14px;flex:none;opacity:.8}
.school-pill .sep{width:1px;height:18px;background:rgba(255,255,255,.4);flex:none}
.school-pill .space{font-size:13px;opacity:.9;white-space:nowrap}
.filter-chip{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;border-radius:999px;font-size:13px}
.filter-chip b{font-weight:700}
.top-right{position:fixed;top:max(14px,env(safe-area-inset-top));right:max(14px,env(safe-area-inset-right));z-index:20;display:flex;gap:4px;padding:5px;border-radius:999px}
.icon-btn{width:38px;height:38px;border-radius:50%;border:0;background:transparent;color:#fff;display:grid;place-items:center}
.icon-btn:hover{background:rgba(255,255,255,.16)}
.icon-btn svg{width:21px;height:21px}
/* 인사하기 메뉴 */
.greet-pop{position:fixed;z-index:40;display:grid;grid-template-columns:repeat(3,auto);gap:6px;padding:10px;border-radius:18px;animation:pop .16s ease}
.greet-opt{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:76px;padding:8px 6px;border:0;border-radius:12px;background:rgba(255,255,255,.12);color:#fff;font-size:13px;font-weight:500;cursor:pointer}
.greet-opt:hover,.greet-opt:focus-visible{background:rgba(255,255,255,.26)}
.greet-opt .ic{font-size:22px;line-height:1}
/* 배경음악·효과음 크기 조절 작은 창 */
.vol-pop{position:fixed;z-index:40;width:220px;padding:14px 16px 14px;border-radius:18px;animation:pop .16s ease}
.vol-head{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;margin-bottom:10px}
.school-pill .online{font-size:12px;font-weight:600;padding:2px 8px;margin-left:6px;border-radius:999px;background:rgba(80,200,120,.22);color:#eafff0;white-space:nowrap}
.vol-now{font-size:12px;opacity:.8;margin:-4px 0 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vol-pct{font-size:13px;opacity:.85;font-variant-numeric:tabular-nums}
.vol-pop input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:6px;outline:none;cursor:pointer;
  background:linear-gradient(90deg,#f1d48f var(--p,50%),rgba(255,255,255,.25) var(--p,50%))}
.vol-pop input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.35)}
.vol-pop input[type=range]::-moz-range-thumb{width:18px;height:18px;border:0;border-radius:50%;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.35)}
.vol-row{display:flex;gap:6px;margin-top:12px}
.vol-mini{flex:1;height:32px;border-radius:999px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.08);color:#fff;font-size:12.5px;cursor:pointer}
.vol-mini:hover{background:rgba(255,255,255,.18)}
.vol-mini.on{background:#f1d48f;color:#3b2f20;border-color:#f1d48f}
.vol-mute{margin-top:12px;width:100%;height:36px;border-radius:999px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.1);color:#fff;font-size:13.5px;font-weight:500;cursor:pointer}
.vol-mute:hover{background:rgba(255,255,255,.18)}
.vol-mute.on{background:#f1d48f;color:#3b2f20;border-color:#f1d48f}
.hint{position:fixed;bottom:calc(max(16px,env(safe-area-inset-bottom)) + 90px);left:50%;transform:translateX(-50%);z-index:10;color:#fff;font-size:13px;font-weight:500;letter-spacing:-.01em;text-shadow:0 1px 6px rgba(0,0,0,.55);white-space:nowrap;pointer-events:none;transition:opacity .6s}
.dock{position:fixed;left:50%;bottom:max(16px,env(safe-area-inset-bottom));transform:translateX(-50%);z-index:20;display:flex;gap:2px;padding:6px;border-radius:24px;transition:opacity .25s}
.dock button{width:76px;height:64px;border:0;border-radius:18px;background:transparent;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;font-size:13px;font-weight:500}
.dock button:hover,.dock button.on{background:rgba(255,255,255,.16)}
.dock svg{width:24px;height:24px}
.action-btn{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:calc(max(16px,env(safe-area-inset-bottom)) + 96px);z-index:20;height:56px;padding:0 22px;border:0;border-radius:999px;background:var(--green);color:#fff;font-size:16px;font-weight:700;box-shadow:0 8px 24px rgba(20,30,20,.35);animation:pop .2s ease}
.action-btn:hover{background:#28412f}
.notice-chip{display:inline-flex;align-items:center;height:36px;padding:0 15px;border-radius:999px;font-size:13.5px;font-weight:700;animation:chipGlow 2.2s ease-in-out infinite}
@keyframes chipGlow{0%,100%{box-shadow:0 0 0 0 rgba(255,214,140,0)}50%{box-shadow:0 0 0 6px rgba(255,214,140,.38)}}
.speech{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(max(16px,env(safe-area-inset-bottom)) + 92px);width:min(640px,calc(100vw - 24px));z-index:30;background:rgba(251,248,241,.97);border-radius:20px;box-shadow:var(--shadow);padding:14px 18px 16px;border:1px solid rgba(255,255,255,.8);animation:pop .25s ease}
.speech .hd{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--green);margin-bottom:6px}
.speech .hd span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.speech .tx{font-family:'Nanum Myeongjo',serif;font-weight:800;font-size:18px;line-height:1.6;min-height:2.6em;word-break:keep-all}
.speech .stop{flex:none;border:0;background:var(--ivory2);border-radius:999px;height:30px;padding:0 12px;font-size:12.5px}
.fade{position:fixed;inset:0;background:#1d150c;opacity:0;pointer-events:none;transition:opacity .25s;z-index:70}
.fade.on{opacity:.9}
.place-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.place-btn{display:flex;align-items:center;gap:10px;min-height:52px;padding:6px 12px;border:1px solid var(--line);background:#fffdf8;border-radius:14px;font-size:14px;font-weight:500;text-align:left;line-height:1.3}
.place-btn:hover{border-color:var(--green2);background:#f3f6ef}
.place-btn .ic{font-size:20px;flex:none}
.lap-hud{position:fixed;top:58px;left:50%;transform:translateX(-50%);z-index:12;padding:8px 16px;border-radius:999px;font-size:14px;font-weight:700;white-space:nowrap;font-variant-numeric:tabular-nums}
.disclaimer{position:fixed;left:max(16px,env(safe-area-inset-left));bottom:max(14px,env(safe-area-inset-bottom));z-index:10;color:rgba(255,255,255,.88);font-size:11.5px;text-shadow:0 1px 4px rgba(0,0,0,.6);pointer-events:none;line-height:1.5}
.labels{position:fixed;inset:0;pointer-events:none;z-index:5;overflow:hidden}
.char-label{position:absolute;left:0;top:0;transform:translate(-50%,-100%);white-space:nowrap;font-size:12px;font-weight:700;color:#fff;background:rgba(36,30,24,.5);padding:3px 8px;border-radius:999px;display:flex;gap:5px;align-items:center;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.char-label .tag{font-size:10px;font-weight:500;opacity:.85;border:1px solid rgba(255,255,255,.5);border-radius:999px;padding:0 5px}
.char-label.me{background:rgba(47,75,59,.82)}
.bubble{position:absolute;left:0;top:0;transform:translate(-50%,-100%);background:#fffaf0;color:var(--ink);font-size:13px;font-weight:500;padding:6px 11px;border-radius:14px;box-shadow:0 4px 14px rgba(0,0,0,.2);white-space:nowrap}
.bubble::after{content:"";position:absolute;left:50%;bottom:-6px;margin-left:-6px;border:6px solid transparent;border-top-color:#fffaf0;border-bottom:0}
.letter-tip{position:fixed;left:0;top:0;z-index:12;transform:translate(-50%,-115%);pointer-events:none;display:flex;align-items:center;gap:8px;background:rgba(255,253,247,.93);color:var(--ink);padding:8px 14px;border-radius:999px;font-size:13.5px;font-weight:500;box-shadow:0 6px 20px rgba(0,0,0,.22);white-space:nowrap;max-width:70vw}
.letter-tip span{overflow:hidden;text-overflow:ellipsis}
.letter-tip svg{width:18px;height:18px;flex:none}
.joystick{position:fixed;left:max(18px,env(safe-area-inset-left));bottom:calc(max(16px,env(safe-area-inset-bottom)) + 112px);width:108px;height:108px;border-radius:50%;z-index:15;touch-action:none}
.joystick .knob{position:absolute;left:50%;top:50%;width:46px;height:46px;margin:-23px 0 0 -23px;border-radius:50%;background:rgba(255,255,255,.75);box-shadow:0 2px 10px rgba(0,0,0,.25)}

/* ---------- panels (side / bottom sheet) ---------- */
.panel{position:fixed;top:76px;right:max(16px,env(safe-area-inset-right));width:min(384px,calc(100vw - 32px));max-height:calc(100dvh - 76px - 112px);background:var(--ivory);border-radius:24px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.7);z-index:40;display:flex;flex-direction:column;overflow:hidden;animation:slideIn .28s ease}
@keyframes slideIn{from{opacity:0;transform:translateX(16px)}to{opacity:1;transform:none}}
.panel-head{padding:22px 22px 6px;position:relative;flex:none}
.panel-head h2{margin:0;font-size:22px;letter-spacing:-.02em}
.panel-head p{margin:6px 0 0;color:var(--muted);font-size:13.5px;line-height:1.5}
.close-x{position:absolute;right:14px;top:14px;width:38px;height:38px;border:0;border-radius:50%;background:transparent;display:grid;place-items:center;color:var(--muted)}
.close-x:hover{background:var(--ivory2)}
.close-x svg{width:20px;height:20px}
.panel-body{padding:10px 22px 20px;overflow:auto;flex:1;min-height:0}
.panel-foot{padding:12px 22px 18px;border-top:1px solid var(--line);flex:none;background:var(--ivory)}
.search{display:flex;align-items:center;gap:10px;height:52px;padding:0 14px;border:1px solid var(--line);border-radius:16px;background:#fffdf8}
.search svg{width:20px;height:20px;color:var(--muted);flex:none}
.search input::-webkit-search-cancel-button{-webkit-appearance:none;display:none}
.search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:16px}
.search .clear{width:26px;height:26px;border:0;border-radius:50%;background:#cfc8b9;color:#fff;display:grid;place-items:center;flex:none}
.search .clear svg{width:14px;height:14px;color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.chip{height:36px;padding:0 15px;border-radius:999px;border:1px solid var(--line);background:#fffdf8;font-size:14px;font-weight:500;color:#3d3b34}
.chip.on{background:var(--green);border-color:var(--green);color:#fff}
.chip:disabled{opacity:.45;cursor:not-allowed}
.school-list{display:flex;flex-direction:column;gap:10px}
.school-item{text-align:left;border:1px solid var(--line);background:#fffdf8;border-radius:18px;padding:15px 18px;display:block;width:100%}
.school-item.sel{border:2px solid var(--green);padding:14px 17px;background:#fbfaf4}
.school-item .row{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.school-item .nm{font-size:17px;font-weight:700}
.school-item .rg{font-size:13.5px;color:var(--muted);margin-top:3px}
.school-item .meta{font-size:13px;color:#4c4a42;white-space:nowrap;margin-top:3px}
.school-item .year{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.field-label{display:block;font-size:13px;color:var(--muted);margin:0 0 6px}
.select,.input,.textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:0 14px;height:46px;font-size:16px;outline:0}
.select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23555' stroke-width='2'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:40px}
.textarea{height:auto;min-height:140px;padding:12px 14px;line-height:1.6;resize:vertical}
.select:focus,.input:focus,.textarea:focus{border-color:var(--green2);box-shadow:0 0 0 3px rgba(62,100,80,.15)}
.btn{height:52px;border-radius:16px;border:0;font-size:16px;font-weight:700;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn.primary{background:var(--green);color:#fff;width:100%}
.btn.primary:hover{background:#28412f}
.btn.primary:disabled{background:#9aa79d;cursor:not-allowed}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink);height:42px;font-size:14px;font-weight:500;border-radius:12px}
.btn.ghost:hover{background:var(--ivory2)}
.btn.danger{color:var(--warn)}
.btn.small{height:36px;font-size:13px;padding:0 12px;border-radius:10px}
.footnote{text-align:center;color:var(--muted);font-size:12px;margin-top:10px;line-height:1.5}
.section-title{font-size:13px;font-weight:700;color:#4c4a42;margin:18px 0 8px}
.notice{border-radius:14px;padding:12px 14px;font-size:13px;line-height:1.6;background:var(--green-soft);color:#2d4436}
.notice.warn{background:var(--warn-bg);color:var(--warn)}
.notice b{font-weight:700}
.empty{color:var(--muted);text-align:center;padding:24px 8px;font-size:14px;line-height:1.6}
.letter-item{display:block;width:100%;text-align:left;border:1px solid var(--line);background:#fffdf8;border-radius:16px;padding:13px 15px;margin-bottom:9px}
.letter-item:hover{border-color:#c9bfa9}
.letter-item .t{font-family:var(--hand);font-size:20px;font-weight:700;line-height:1.25}
.letter-item .m{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:6px;font-size:12.5px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:999px;font-size:12px;font-weight:700;background:var(--green-soft);color:var(--green)}
.badge.mine{background:#f6e7b8;color:#7a5a12}
.badge.fic{background:#ece6da;color:#6b6457;font-weight:500}
.toggle-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.toggle-row small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}
.switch{position:relative;width:48px;height:28px;flex:none}
.switch input{opacity:0;width:0;height:0;position:absolute}
.switch span{position:absolute;inset:0;border-radius:999px;background:#cfc8b9;transition:.2s}
.switch span::after{content:"";position:absolute;left:3px;top:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked+span{background:var(--green2)}
.switch input:checked+span::after{transform:translateX(20px)}
.switch input:focus-visible+span{outline:2px solid var(--green2);outline-offset:2px}
.help-list{margin:0;padding-left:18px;font-size:14px;line-height:1.75;color:#3a3832}
.kbd{display:inline-block;min-width:22px;padding:0 6px;border:1px solid #cfc6b4;border-bottom-width:2px;border-radius:6px;background:#fff;font-size:12px;text-align:center;line-height:20px}
.avatar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.avatar-opt{height:44px;border-radius:12px;border:1px solid var(--line);background:#fffdf8;font-size:14px;font-weight:500}
.avatar-opt.on{border:2px solid var(--green);background:#f3f6ef;color:var(--green);font-weight:700}
.swatches{display:flex;gap:10px}
.swatch{width:34px;height:34px;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 1px var(--line)}
.swatch.on{box-shadow:0 0 0 2px var(--green)}
.err{color:var(--warn);font-size:13px;margin-top:6px;line-height:1.5}
.counter{font-size:12px;color:var(--muted);text-align:right;margin-top:4px}

/* ---------- modals ---------- */
.modal-wrap{position:fixed;inset:0;z-index:60;background:rgba(28,20,12,.46);display:grid;place-items:center;padding:16px;animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{position:relative;width:min(560px,100%);max-height:calc(100dvh - 32px);overflow:auto;background:var(--paper);border-radius:22px;box-shadow:var(--shadow);animation:pop .22s ease}
@keyframes pop{from{transform:translateY(10px) scale(.98);opacity:0}to{transform:none;opacity:1}}
.modal .inner{padding:26px 26px 22px}
.modal h3{margin:0 0 4px;font-size:21px;letter-spacing:-.02em}
.modal .sub{color:var(--muted);font-size:13.5px;margin:0 0 16px;line-height:1.5}
.letter-paper{background:
   linear-gradient(90deg,transparent 52px,rgba(196,90,74,.35) 52px,rgba(196,90,74,.35) 54px,transparent 54px),
   repeating-linear-gradient(#fdfaf1 0 33px,#cfdbe6 33px 34px);background-color:#fdfaf1}
.letter-paper .inner{padding:30px 26px 22px 70px}
.letter-title{font-family:var(--hand);font-size:31px;font-weight:700;line-height:1.15;margin:6px 0 10px;word-break:keep-all;overflow-wrap:anywhere}
.letter-meta{display:flex;flex-wrap:wrap;gap:6px 10px;font-size:13px;color:#5b574d;margin-bottom:14px;align-items:center}
.letter-body{font-family:var(--hand);font-size:22px;line-height:34px;white-space:pre-wrap;word-break:keep-all;overflow-wrap:anywhere;color:#2b2925;margin:0 0 18px}
.letter-actions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}
.replies{background:#f4efe3;border-top:1px dashed #cfc5b0;padding:18px 26px 22px}
.reply{background:#fffdf8;border:1px solid var(--line);border-radius:14px;padding:11px 13px;margin-bottom:8px}
.reply .who{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:4px}
.reply .who b{color:#3b3a33}
.reply .txt{font-size:14.5px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere}
.link-btn{border:0;background:transparent;color:var(--muted);font-size:12.5px;padding:2px 4px;text-decoration:underline;text-underline-offset:2px}
.link-btn:hover{color:var(--ink)}
.radio-list label{display:flex;gap:10px;align-items:center;padding:11px 12px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px;background:#fff;font-size:14.5px;cursor:pointer}
.radio-list input{accent-color:var(--green)}
.row-btns{display:flex;gap:10px;margin-top:16px}
.row-btns .btn{flex:1}
.btn.secondary{background:var(--ivory2);color:var(--ink)}
.toast-wrap{position:fixed;top:72px;left:50%;transform:translateX(-50%);z-index:80;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:min(92vw,520px)}
.toast{background:rgba(32,28,22,.88);color:#fff;font-size:14px;padding:11px 16px;border-radius:14px;box-shadow:0 8px 24px rgba(0,0,0,.25);animation:pop .2s ease;line-height:1.5;text-align:center}

/* ---------- loading & fallback ---------- */
/* 로딩: 어두운 서재 불빛 아래 놓인 초록 천 수첩. 금박 글씨에 빛이 천천히 지나감 */
.loading{position:fixed;inset:0;z-index:90;display:grid;place-items:center;overflow:hidden;transition:opacity .6s;
  background:radial-gradient(90% 70% at 50% 38%,#4a3826 0%,#2a1f16 55%,#140f0b 100%)}
.ld-glow{position:absolute;left:50%;top:40%;width:min(720px,140vw);aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(closest-side,rgba(255,206,130,.22),rgba(255,190,110,.06) 60%,transparent);animation:glow 6s ease-in-out infinite alternate;pointer-events:none}
@keyframes glow{from{opacity:.75;transform:translate(-50%,-50%) scale(.96)}to{opacity:1;transform:translate(-50%,-50%) scale(1.04)}}
.ld-dust{position:absolute;inset:0;pointer-events:none}
.ld-dust i{position:absolute;bottom:-10px;width:3px;height:3px;border-radius:50%;background:rgba(255,226,170,.55);filter:blur(.4px);animation:dust 14s linear infinite;opacity:0}
.ld-dust i:nth-child(1){left:12%;animation-delay:0s}.ld-dust i:nth-child(2){left:22%;animation-delay:-3s;animation-duration:17s}
.ld-dust i:nth-child(3){left:31%;animation-delay:-7s}.ld-dust i:nth-child(4){left:39%;animation-delay:-11s;animation-duration:19s;width:2px;height:2px}
.ld-dust i:nth-child(5){left:47%;animation-delay:-2s;animation-duration:16s}.ld-dust i:nth-child(6){left:55%;animation-delay:-9s}
.ld-dust i:nth-child(7){left:63%;animation-delay:-5s;animation-duration:18s;width:2px;height:2px}.ld-dust i:nth-child(8){left:71%;animation-delay:-12s}
.ld-dust i:nth-child(9){left:79%;animation-delay:-1s;animation-duration:15s}.ld-dust i:nth-child(10){left:86%;animation-delay:-8s;width:2px;height:2px}
.ld-dust i:nth-child(11){left:93%;animation-delay:-4s;animation-duration:20s}.ld-dust i:nth-child(12){left:5%;animation-delay:-10s;animation-duration:17s}
@keyframes dust{0%{transform:translate(0,0);opacity:0}10%{opacity:.9}50%{transform:translate(18px,-50vh)}90%{opacity:.6}100%{transform:translate(-10px,-105vh);opacity:0}}
.loading .box{position:relative;text-align:center;color:#ead9b8;display:flex;flex-direction:column;align-items:center;padding:16px}

.book{position:relative;width:min(320px,74vw);aspect-ratio:3/4.1;animation:coverIn 1s cubic-bezier(.2,.7,.2,1) both;filter:drop-shadow(0 30px 40px rgba(0,0,0,.55)) drop-shadow(0 6px 10px rgba(0,0,0,.35))}
@keyframes coverIn{from{transform:translateY(22px) rotate(-2deg) scale(.97);opacity:0}to{transform:none;opacity:1}}
/* 오른쪽·아래로 살짝 보이는 종이 단면 */
.book-pages{position:absolute;inset:6px -7px -6px 10px;border-radius:4px 10px 10px 4px;
  background:repeating-linear-gradient(90deg,#efe4cc 0 1px,#d9cbaa 1px 2px);box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.cover{position:absolute;inset:0;border-radius:5px 12px 12px 5px;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px 26px 30px 40px;
  background:
    radial-gradient(120% 80% at 30% 15%,rgba(255,255,255,.10),transparent 55%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 3px),
    repeating-linear-gradient(90deg,rgba(0,0,0,.06) 0 1px,transparent 1px 3px),
    linear-gradient(150deg,#2f5240 0%,#22402f 45%,#17301f 100%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06),inset 0 -30px 60px rgba(0,0,0,.25)}
/* 책등 접힘 홈 */
.cover::before{content:"";position:absolute;left:0;top:0;bottom:0;width:26px;background:linear-gradient(90deg,#122619 0%,#1d3a28 55%,rgba(0,0,0,.35) 60%,rgba(255,255,255,.06) 66%,transparent 72%)}
/* 금박 테두리 (모서리 장식) */
.cover-frame{position:absolute;inset:16px 16px 16px 38px;border:1px solid rgba(214,174,98,.55);border-radius:3px;pointer-events:none;box-shadow:inset 0 0 0 4px transparent,inset 0 0 0 5px rgba(214,174,98,.25)}
.cover-frame b{position:absolute;width:14px;height:14px;border:1.5px solid #d6ae62;opacity:.9}
.cover-frame b:nth-child(1){left:-4px;top:-4px;border-right:0;border-bottom:0}.cover-frame b:nth-child(2){right:-4px;top:-4px;border-left:0;border-bottom:0}
.cover-frame b:nth-child(3){left:-4px;bottom:-4px;border-right:0;border-top:0}.cover-frame b:nth-child(4){right:-4px;bottom:-4px;border-left:0;border-top:0}
.cover-emblem{position:relative;width:84px;height:28px;margin-bottom:14px;filter:drop-shadow(0 1px 0 rgba(0,0,0,.45))}
/* 금박 글씨: 금색 그라데이션 + 살짝 눌린 그림자 */
.cover-sub,.loading .brand,.cover-desc{position:relative;background:linear-gradient(100deg,#a87b2e 0%,#f4dc9a 30%,#c99a45 50%,#f6e3a8 70%,#a87b2e 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 1px 0 rgba(0,0,0,.55))}
.cover-sub{font-size:12px;font-weight:500;letter-spacing:.42em;margin-right:-.42em}
.loading .brand{font-family:'Nanum Myeongjo',serif;font-weight:800;font-size:clamp(36px,10vw,50px);letter-spacing:.12em;margin:10px -.12em 0 0;line-height:1.15}
.cover-rule{display:flex;align-items:center;gap:8px;margin:14px 0 12px;color:#d6ae62;font-size:8px}
.cover-rule span{width:42px;height:1px;background:linear-gradient(90deg,transparent,#d6ae62)}
.cover-rule span:last-child{background:linear-gradient(90deg,#d6ae62,transparent)}
.cover-rule em{font-style:normal;opacity:.9}
.cover-desc{font-family:'Nanum Myeongjo',serif;font-weight:400;font-size:13.5px;line-height:1.7;letter-spacing:.04em;word-break:keep-all;max-width:200px}
/* 금박 위로 빛이 천천히 지나감 */
.cover-sheen{position:absolute;inset:-20% -60%;background:linear-gradient(105deg,transparent 42%,rgba(255,240,200,.16) 48%,rgba(255,250,230,.28) 50%,rgba(255,240,200,.16) 52%,transparent 58%);transform:translateX(-60%);animation:sheen 4.8s ease-in-out 1s infinite;mix-blend-mode:screen;pointer-events:none}
@keyframes sheen{0%{transform:translateX(-60%)}55%,100%{transform:translateX(60%)}}
/* 가름끈 */
.cover-ribbon{position:absolute;right:46px;bottom:-30px;width:12px;height:64px;z-index:-1;background:linear-gradient(90deg,#7d1f22,#a3302f 50%,#7d1f22);clip-path:polygon(0 0,100% 0,100% 100%,50% 82%,0 100%);box-shadow:0 2px 4px rgba(0,0,0,.4)}

.loading .sub{margin-top:12px;font-size:12.5px;letter-spacing:.24em;margin-right:-.24em;color:rgba(234,217,184,.7)}
.loading .bar{width:160px;height:1px;background:rgba(214,174,98,.22);margin:34px auto 0;overflow:hidden;border-radius:1px}
.loading .bar i{display:block;height:100%;width:38%;background:linear-gradient(90deg,transparent,#f1d48f,transparent);animation:load 1.6s ease-in-out infinite}
@keyframes load{0%{transform:translateX(-100%)}100%{transform:translateX(270%)}}
.fallback{position:fixed;inset:0;z-index:0;overflow:auto;background:linear-gradient(180deg,#d9c39b 0,#e9dcc2 120px,#ebe1cb 120px,#ebe1cb 70%,#3e5c47 70%,#3e5c47 calc(70% + 4px),#5f8466 calc(70% + 4px));padding:150px 24px 140px}
.fb-notice{max-width:640px;margin:0 auto 22px;background:rgba(251,248,241,.95);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow);font-size:14px;line-height:1.6}
.fb-notice b{color:var(--warn)}
.fb-board{max-width:980px;margin:0 auto;display:flex;flex-wrap:wrap;gap:18px;justify-content:center}
.fb-letter{width:170px;min-height:190px;border:0;border-radius:4px;background:#fbf7ec;box-shadow:0 6px 14px rgba(60,40,20,.22);padding:26px 14px 14px;text-align:left;position:relative;font-family:var(--hand)}
.fb-letter::before{content:"";position:absolute;top:-8px;left:50%;width:70px;height:22px;margin-left:-35px;background:rgba(232,220,185,.9);transform:rotate(-3deg)}
.fb-letter .t{font-size:20px;font-weight:700;line-height:1.2}
.fb-letter .y{font-size:15px;color:#7a5a3a;margin-top:10px}
.fb-letter:nth-child(3n){transform:rotate(-2deg);background:#f7e1dc}
.fb-letter:nth-child(3n+1){transform:rotate(1.5deg)}
.fb-letter:nth-child(4n){background:#f2e7cf}

/* ---------- responsive ---------- */
@media (max-width:720px){
  .panel{left:8px;right:8px;width:auto;top:auto;bottom:max(8px,env(safe-area-inset-bottom));max-height:min(80dvh,calc(100dvh - 80px));border-radius:22px;animation:sheetIn .28s ease}
  @keyframes sheetIn{from{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}
  body.has-panel .dock,body.has-panel .joystick,body.has-panel .disclaimer{opacity:0;pointer-events:none}
  .dock button{width:63px;height:58px;font-size:11.5px}
  .action-btn{bottom:calc(max(16px,env(safe-area-inset-bottom)) + 120px)}
  .lap-hud{top:calc(max(14px,env(safe-area-inset-top)) + 96px)}
  .dock svg{width:22px;height:22px}
  .hint{top:auto;bottom:calc(max(16px,env(safe-area-inset-bottom)) + 76px);font-size:12px}
  .disclaimer{bottom:auto;top:calc(max(14px,env(safe-area-inset-top)) + 54px);font-size:10.5px}
  .school-pill{height:42px}
  .school-pill .name{font-size:15px}
  .school-pill .space{display:none}
  .school-pill .sep{display:none}
  .top-left{max-width:calc(100vw - 120px)}
  .filter-chip{display:none}
  .letter-paper .inner{padding:24px 18px 18px 58px}
  .letter-paper{background:linear-gradient(90deg,transparent 42px,rgba(196,90,74,.35) 42px,rgba(196,90,74,.35) 44px,transparent 44px),repeating-linear-gradient(#fdfaf1 0 33px,#cfdbe6 33px 34px)}
  .letter-title{font-size:27px}
  .letter-body{font-size:20px}
  .replies{padding:16px 18px 20px}
  .modal .inner{padding:22px 18px 18px}
  .toast-wrap{top:auto;bottom:calc(max(16px,env(safe-area-inset-bottom)) + 84px)}
  .fallback{padding:130px 14px 130px}
  .fb-letter{width:calc(50% - 10px)}
}
@media (max-width:360px){ .dock button{width:58px} }
@media (prefers-reduced-motion:reduce){ *{animation:none!important;transition:none!important} }
/* 1:1 대화 · 퀴즈 · 한도 */
.quota{font-size:12.5px;color:var(--muted);margin:10px 0 6px;line-height:1.5}
.quiz-q{background:#fffdf8;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:4px 0 12px;font-size:15px;line-height:1.5}
.quiz-hint{font-size:13px;color:var(--muted);margin-top:4px}
.quiz-tip{font-size:13px;color:#5b5a4e;background:rgba(240,232,210,.6);border-radius:10px;padding:8px 11px;margin:6px 0 10px}
.chat-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.chat-log{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.chat-sys{align-self:center;font-size:12px;color:var(--muted);background:rgba(0,0,0,.04);border-radius:999px;padding:4px 12px;text-align:center}
.msg{max-width:82%;padding:9px 12px;border-radius:16px;font-size:14.5px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}
.msg .at{display:block;font-size:10.5px;opacity:.6;margin-top:3px}
.msg.me{align-self:flex-end;background:var(--green-soft);color:#24382b;border-bottom-right-radius:5px}
.msg.peer{align-self:flex-start;background:#fffdf8;border:1px solid var(--line);border-bottom-left-radius:5px}
.chat-input{min-height:64px;margin-bottom:8px}
.dock button{position:relative}
.dock button.dot::after{content:'';position:absolute;top:9px;right:20px;width:8px;height:8px;border-radius:50%;background:#e8644a;box-shadow:0 0 0 2px rgba(0,0,0,.25)}
@media (max-width:440px){.dock button{width:54px;font-size:11px}}
.badge.closed{margin-left:6px;vertical-align:2px;background:#ece5d6;color:#7a6a4f;font-size:11px}
/* 날씨 표시 */
.weather-chip{display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;color:#fff}

/* 추억학교 들어가기 (학교 찾기 창 아래) */
.or-line{display:flex;align-items:center;gap:10px;margin:12px 0;color:var(--muted,#8a8070);font-size:12px}
.or-line::before,.or-line::after{content:"";flex:1;height:1px;background:rgba(60,40,20,.15)}
.chueok-btn{width:100%;display:flex;align-items:center;gap:12px;padding:10px 14px;border:1px solid rgba(60,40,20,.22);border-radius:14px;background:#fffdf7;cursor:pointer;text-align:left;font:inherit;color:inherit}
.chueok-btn:hover{background:#f6f1e3}
.chueok-btn .ic{width:38px;height:38px;border-radius:50%;background:#e2eadf;display:grid;place-items:center;font-size:20px;flex:none}
.chueok-btn .tx{flex:1;display:flex;flex-direction:column;gap:2px}
.chueok-btn .tx b{font-size:15px}
.chueok-btn .tx small{font-size:12.5px;opacity:.75}
.chueok-btn .ar{font-size:18px;opacity:.6}

/* 제자리멀리뛰기 게이지 */
.jump-gauge{position:fixed;left:50%;bottom:150px;transform:translateX(-50%);width:min(280px,76vw);padding:10px 14px 12px;border-radius:14px;background:rgba(30,26,20,.72);color:#fff;z-index:30;pointer-events:none;text-align:center}
.jump-gauge .jg-label{font-size:13px;margin-bottom:7px;opacity:.95}
.jump-gauge .jg-bar{position:relative;height:16px;border-radius:9px;background:rgba(255,255,255,.18);overflow:hidden}
.jump-gauge .jg-sweet{position:absolute;right:0;top:0;bottom:0;width:7%;background:rgba(110,220,120,.55)}
.jump-gauge .jg-fill{position:absolute;left:0;top:0;bottom:0;width:0;border-radius:9px;background:linear-gradient(90deg,#f2c14e,#f08a3c 70%,#e5533d)}
.jump-gauge.hit{box-shadow:0 0 0 3px rgba(255,255,255,.7)}

/* 졸업 연도 고르기 (연대 → 10칸 연도표) */
.ypk{width:100%}
.ypk-btn{text-align:left;cursor:pointer;color:inherit;font:inherit;font-size:16px}
.ypk-btn.ypk-unset{color:#8a8070}
.ypk.open .ypk-btn{border-color:var(--green2)}
.ypk-pane{margin-top:8px;padding:10px;border:1px solid var(--line);border-radius:14px;background:#fffdf7}
.ypk-decs{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;margin-bottom:10px}
.ypk-yrs{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.ypk-dec,.ypk-yr,.ypk-none{border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font:inherit;color:inherit}
.ypk-dec{height:32px;font-size:12.5px;padding:0}
.ypk-yr{height:40px;font-size:14.5px}
.ypk-yr:disabled{opacity:.35;cursor:default}
.ypk-none{width:100%;height:36px;margin-top:8px;font-size:13.5px}
.ypk-dec:hover,.ypk-yr:not(:disabled):hover,.ypk-none:hover{border-color:var(--green2)}
.ypk-dec.on,.ypk-yr.on,.ypk-none.on{background:var(--green);border-color:var(--green);color:#fff}

/* 휴대폰: 화면 확대 막기 + 아래 메뉴가 화면 폭 안에 들어오게 */
html,body{touch-action:manipulation;-webkit-text-size-adjust:100%;text-size-adjust:100%}
button,a,input,select,textarea{touch-action:manipulation}
@media (max-width:720px){
  .dock{max-width:calc(100vw - 16px);box-sizing:border-box}
  .dock button{width:calc((100vw - 16px - 12px - 10px) / 6);min-width:0;height:58px;font-size:11px;white-space:nowrap;letter-spacing:-.3px}
}
@media (max-width:720px){
  .top-right{gap:2px;padding:4px}
  .top-right .icon-btn{width:32px;height:32px}
  .top-right .icon-btn svg{width:18px;height:18px}
  .top-left{max-width:calc(100vw - 28px)}
  .school-pill{max-width:calc(100vw - 28px - 186px);min-width:0}
  .school-pill .name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}
@media (max-width:720px){
  .school-pill .online{margin-left:2px;padding:2px 6px;flex:none}
  .school-pill .online .online-word{display:none}
  .school-pill .name{flex:1 1 auto}
}
@media (max-width:720px){
  .school-pill{gap:5px;padding:0 10px 0 12px}
  .school-pill > svg:first-child{display:none}
  .top-right .icon-btn{width:30px;height:30px}
  .school-pill{max-width:calc(100vw - 28px - 176px)}
}