/* 오가는 마음 — 「비밀 친구 우체통」 모양. 학생 화면 sf-, 편지 카드 pl-(화면·그림·인쇄 같이 씀), 선생님 화면 pt-, 인쇄 #printroot .pr-sf- */

/* ---------- 편지 카드 — 크림색 편지지, 마스킹 테이프, 천사 날개. 글자 크기는 em(인쇄 칸에 맞춰 줄일 수 있게) ---------- */
.pl-card{position:relative;background:#FFFDF7;color:#2E2A26;border:1px solid #E6DCC8;border-radius:10px;padding:2.2em 1.8em 1.6em;font-family:"Gowun Dodum","Malgun Gothic",sans-serif;font-size:16px;line-height:1.7;
  box-shadow:0 1px 2px rgba(46,42,38,.08),0 14px 30px -16px rgba(46,42,38,.35);text-align:left}
.pl-tape{position:absolute;left:50%;top:-.7em;width:7.5em;height:1.6em;margin-left:-3.75em;transform:rotate(-2deg);background:repeating-linear-gradient(45deg,#F6C9D6 0 .5em,#FBE2EA .5em 1em);opacity:.92;border-radius:2px}
.pl-wing{position:absolute;right:.7em;top:.5em;width:3.6em} .pl-wing svg{width:100%;height:auto}
.pl-to{margin:0 0 .2em;font-family:"Jua",sans-serif;font-size:1.45em;line-height:1.3;color:#B0446A}
.pl-hi{margin:0 0 .7em;font-family:"Nanum Pen Script",cursive;font-size:1.5em;line-height:1.2}
.pl-sec{margin:0 0 .75em;padding:.55em .9em .6em;border-radius:.7em;background:#FFFFFF;border:1px solid #F1E9D8;border-left:.3em solid #E9B949}
.pl-sec h4{margin:0 0 .2em;font-family:"Jua",sans-serif;font-weight:400;font-size:1em;color:#94650F}
.pl-sec p{margin:.1em 0;font-family:"Nanum Pen Script",cursive;font-size:1.42em;line-height:1.3}
.pl-sec.thanks{border-left-color:#7FB2DD} .pl-sec.thanks h4{color:#3B6EA5}
.pl-sec.deed{border-left-color:#9CC690} .pl-sec.deed h4{color:#4F7A4A}
.pl-sec.say{border-left-color:#EAB2C5} .pl-sec.say h4{color:#B0446A}
.pl-sec.angel{border-left-color:#C9B8E8;background:#F6F1FD} .pl-sec.angel h4{color:#6A4FA0}
.pl-sec.angel b{font-weight:400;color:#6A4FA0;background:linear-gradient(transparent 60%,#FFE58A 60%)}
.pl-sec p.pl-chips{display:flex;flex-wrap:wrap;gap:.3em;margin:.15em 0 .35em;font-family:"Gowun Dodum",sans-serif;font-size:.82em;line-height:1.5}
.pl-chips span{background:#FCF2D6;color:#94650F;border-radius:99px;padding:.05em .7em}
.pl-from{margin:.6em 0 0;text-align:right;font-family:"Nanum Pen Script",cursive;font-size:1.6em;line-height:1.2}
.pl-from::before{content:"♥";margin-right:.3em;color:#E4574B;font-family:"Gowun Dodum",sans-serif;font-size:.7em;vertical-align:.1em}

/* ---------- 새 편지 팝업 — 봉투가 통통 떨어지고, 열면 편지가 펼쳐진다 ---------- */
.pl-pop{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:16px;background:rgba(35,32,34,.55);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:plfade .25s ease-out}
.pl-popin{width:min(560px,100%);max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);overflow:auto;border-radius:22px;background:var(--paper);box-shadow:0 30px 60px -20px rgba(0,0,0,.5);padding:24px 20px 20px}
.pl-stage1{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:10px 0}
.pl-envwrap{position:relative;width:200px;animation:pldrop .9s cubic-bezier(.3,1.4,.5,1) both}
.pl-envwrap .envl{width:100%;height:auto;filter:drop-shadow(0 10px 12px rgba(0,0,0,.18));animation:plwob 1.6s ease-in-out .9s infinite}
.pl-spark{position:absolute;inset:-34px;pointer-events:none;background-repeat:no-repeat;animation:plspark 1.8s ease-in-out infinite;
  background-image:radial-gradient(circle,#FFC94D 0 5px,transparent 6px),radial-gradient(circle,#F7A6A0 0 4px,transparent 5px),radial-gradient(circle,#9CC690 0 4px,transparent 5px),radial-gradient(circle,#FFC94D 0 3px,transparent 4px),radial-gradient(circle,#7FB2DD 0 4px,transparent 5px),radial-gradient(circle,#F7A6A0 0 3px,transparent 4px);
  background-size:12px 12px;background-position:6% 30%,92% 12%,86% 80%,20% 88%,50% 0,2% 70%}
.pl-new{margin:22px 0 0;font-family:var(--cute);font-size:2em;color:var(--seal);line-height:1.2}
.pl-stage2 .pl-card{margin:14px 0 16px}
.pl-stage2 .row{position:sticky;bottom:-20px;margin:0 -20px -20px;padding:12px 20px 16px;background:var(--paper);border-top:1px solid var(--rule)}
.pl-unfold{animation:plopen .6s cubic-bezier(.2,1.2,.4,1) both;transform-origin:50% 0}
.pl-again .pl-unfold{animation:none}
@keyframes plfade{from{opacity:0}}
@keyframes pldrop{0%{transform:translateY(-60vh) rotate(-14deg)}70%{transform:translateY(8px) rotate(3deg)}100%{transform:none}}
@keyframes plwob{50%{transform:rotate(-4deg) scale(1.03)}}
@keyframes plspark{50%{transform:scale(1.08);opacity:.4}}
@keyframes plopen{from{transform:perspective(900px) rotateX(-70deg) scaleY(.6);opacity:0}}

/* ---------- 1. 들어가기 ---------- */
.sf-joinwrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:22px;align-items:center;margin-top:10px}
.sf-hero{position:relative;margin:0;aspect-ratio:1/1;max-width:320px;width:100%;justify-self:center;border-radius:50%;background:radial-gradient(circle at 50% 60%,var(--seal-soft),transparent 68%)}
.sf-hmb{position:absolute;left:30%;top:18%;width:40%} .sf-hmb svg{width:100%;height:auto}
.sf-hl{position:absolute;width:30%;animation:sffloat 3.2s ease-in-out infinite} .sf-hl svg{width:100%;height:auto;filter:drop-shadow(0 6px 8px rgba(0,0,0,.12))}
.sf-hl0{left:2%;top:12%;rotate:-14deg} .sf-hl1{right:0;top:30%;rotate:10deg;animation-delay:-1s} .sf-hl2{left:10%;bottom:6%;rotate:6deg;animation-delay:-2s}
@keyframes sffloat{50%{translate:0 -10px}}
.sf-join label.fl{display:block;margin:4px 0}
.sf-join input,.sf-wcard textarea{width:100%;border:1.5px solid var(--rule);border-radius:12px;padding:12px 14px;background:var(--surface);font-size:1.1em}
.sf-join input:focus,.sf-wcard textarea:focus{border-color:var(--sky);outline:none}
.sf-join input.sf-codein{font-family:var(--mono);letter-spacing:.3em;text-transform:uppercase;font-size:1.5em;text-align:center}
.sf-jrow{display:grid;grid-template-columns:110px 1fr;gap:10px;margin-top:6px}
.sf-join .btn.big{width:100%;margin-top:6px}
.sf-in{display:flex;align-items:center;gap:14px}
.sf-inface .mood{width:64px;height:64px;animation:bounce .6s cubic-bezier(.2,1.6,.4,1)}
.sf-inh{margin:0;font-size:1.15em} .sf-inh b{font-family:var(--cute);font-weight:400;font-size:1.2em;color:var(--seal)}
.sf-net{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--faint);margin-right:6px;vertical-align:1px}
.sf-net.on{background:#3FA34D;box-shadow:0 0 0 3px rgba(63,163,77,.2)}
.sf-tlink{margin-top:18px;text-align:right}
@media (max-width:640px){ .sf-joinwrap{grid-template-columns:1fr} .sf-hero{max-width:200px} }

/* ---------- 2. 비밀 친구 ---------- */
.sf-pickbox{margin:14px 0 20px}
.sf-wait{display:flex;align-items:center;gap:18px;padding:6px 4px}
.sf-wait > svg{width:84px;height:auto;flex:none}
.sf-wait .mbox{animation:sfknock 1.8s ease-in-out infinite;transform-origin:50% 100%}
.sf-wait .ask{margin:0}
.sf-ready .envl{animation:bounce .8s cubic-bezier(.2,1.6,.4,1)}
@keyframes sfknock{0%,60%,100%{transform:none}70%{transform:rotate(-5deg)}80%{transform:rotate(4deg)}90%{transform:rotate(-2deg)}}
.sf-dots{display:flex;gap:6px;margin:6px 0 0}
.sf-dots i{width:9px;height:9px;border-radius:50%;background:var(--seal);opacity:.3;animation:sfdot 1.2s infinite}
.sf-dots i:nth-child(2){animation-delay:.2s} .sf-dots i:nth-child(3){animation-delay:.4s}
@keyframes sfdot{30%{opacity:1;transform:translateY(-4px)}}

/* ---------- 3. 편지 쓰기 — 다섯 칸 띠, 한 칸 카드 ---------- */
h2 .sf-em{display:inline-block;animation:bounce .6s cubic-bezier(.2,1.6,.4,1)}
.sf-toline{display:inline-flex;align-items:baseline;gap:6px;margin:0 0 10px;padding:4px 14px;border-radius:999px;background:var(--pink-soft)}
.sf-toline span{font-family:var(--mono);font-size:.85em;color:var(--pink)} .sf-toline b{font-family:var(--cute);font-weight:400;font-size:1.25em;color:var(--pink)}
.sf-tabs{list-style:none;margin:0 0 14px;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.sf-tab{width:100%;display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 4px;border:1.5px solid var(--rule);border-radius:12px;background:var(--surface);cursor:pointer;font-size:.86em;font-weight:600;color:var(--muted)}
.sf-tab:disabled{opacity:.45;cursor:default}
.sf-tn{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--sunken);font-family:var(--mono);font-size:.9em}
.sf-tab.ok .sf-tn{background:var(--leaf);color:var(--on)}
.sf-tab.on{border-color:var(--seal);color:var(--ink);background:var(--seal-soft)} .sf-tab.on .sf-tn{background:var(--seal);color:var(--on)}
.sf-tt{white-space:nowrap}
@media (max-width:560px){ .sf-tt{font-size:.82em;white-space:normal;text-align:center;line-height:1.25} }
.sf-wcard{border-top:6px solid #E9B949;animation:up .35s ease-out}
.sf-w-thanks{border-top-color:#7FB2DD} .sf-w-deed{border-top-color:#9CC690} .sf-w-say{border-top-color:#EAB2C5} .sf-w-angel{border-top-color:#C9B8E8}
.sf-q{margin:0 0 12px;font-size:1.05em;font-weight:600}
.sf-wcard textarea{resize:vertical;line-height:1.6;font-size:1.15em}
.sf-crow{display:flex;justify-content:space-between;gap:10px;margin:4px 0 0}
.sf-cnt{margin-left:auto;font-family:var(--mono);font-size:.82em;color:var(--faint)}
.sf-wcard .sf-meter{margin:10px 0 0;padding-top:10px;border-top:1px dashed var(--rule)}
.sf-wcard .fl{display:block;margin:14px 0 6px}
.sf-angel{position:relative;text-align:center;padding:22px 12px 8px;border-radius:16px;background:radial-gradient(circle at 50% 0,#F6F1FD,transparent 70%)}
.sf-ahalo{display:block;width:72px;margin:0 auto 4px;position:relative}
.sf-ahalo::before{content:"";position:absolute;left:14%;right:14%;top:-12px;height:12px;border:3px solid #FFC94D;border-radius:50%}
.sf-ahalo .mood{width:72px;height:72px;animation:sffloat 2.6s ease-in-out infinite}
.sf-aline{margin:4px 0;font-family:var(--cute);font-size:1.3em;color:#6A4FA0}
.sf-angel .oneline input{text-align:center;font-size:1.2em;border-color:#C9B8E8}
.sf-aend{font-size:1.5em}

/* ---------- 4. 보내기 — 미리 보기가 우체통으로 쏙 ---------- */
.sf-sendwrap{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:18px;align-items:end;margin:12px 0}
.sf-pvcard .pl-card{max-width:560px}
.sf-sendside{display:flex;justify-content:center} .sf-sendside svg{width:120px;height:auto}
.sf-fly .sf-pvcard{animation:sffly 1.3s cubic-bezier(.5,0,.6,1) forwards;transform-origin:100% 100%}
.sf-fly .sf-sendside svg{animation:sfgulp .4s ease-out 1.15s}
@keyframes sffly{25%{transform:scale(.6) rotate(-3deg)}100%{transform:translate(55%,10%) scale(.06) rotate(14deg);opacity:0}}
@keyframes sfgulp{50%{transform:scale(1.15,.9)}}
.sf-sendrow{margin:16px 0 4px}
.sf-sent{display:flex;gap:10px;align-items:flex-start}
@media (max-width:640px){ .sf-sendwrap{grid-template-columns:1fr} .sf-sendside svg{width:90px} .sf-fly .sf-pvcard{animation-name:sfflyd} }
@keyframes sfflyd{25%{transform:scale(.6)}100%{transform:translateY(60%) scale(.05);opacity:0}}

/* ---------- 5. 받은 편지함 ---------- */
.sf-ibox{display:grid;gap:22px;margin:12px 0}
.sf-mail{display:flex;flex-direction:column;gap:10px}
.sf-mh{display:flex;align-items:center;gap:10px;margin:0} .sf-mh svg{width:46px;height:auto} .sf-mh b{font-family:var(--cute);font-weight:400;font-size:1.2em}
.sf-mail.sf-new .sf-mh b::after{content:"새 편지";margin-left:8px;font-family:var(--sans);font-size:.62em;font-weight:700;color:var(--on);background:var(--seal);border-radius:99px;padding:1px 8px;vertical-align:3px}
.sf-mail .pl-card{max-width:620px}
.sf-mail .printbox{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 6. 밝히는 날 ---------- */
.sf-rvs{display:grid;gap:14px;margin:12px 0}
.sf-rv{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;padding:22px 16px;border-radius:20px;background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow)}
.sf-rv .mood{width:80px;height:80px}
.sf-rv.sf-drum .mood{animation:sfdrum .25s linear infinite}
.sf-rvname{font-family:var(--cute);font-weight:400;font-size:2.6em;line-height:1.2;color:var(--seal);animation:bounce .6s cubic-bezier(.2,1.6,.4,1)}
.sf-rv.sf-shown{background:var(--seal-soft);border-color:var(--seal)}
@keyframes sfdrum{25%{transform:rotate(-8deg)}75%{transform:rotate(8deg)}}
.sf-mine2{display:flex;align-items:center;gap:14px;margin:16px 0} .sf-mine2 svg{width:64px;height:auto;flex:none} .sf-mine2 p{margin:0}

/* ---------- 선생님 화면 ---------- */
.pt-body{background:var(--paper)}
.pt-wrap{max-width:1100px;margin:0 auto;padding:20px 16px 60px}
.pt-hero{display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:center;padding:20px 0}
.pt-mb svg{width:100%;height:auto;animation:sfknock 2.4s ease-in-out infinite;transform-origin:50% 100%}
.pt-hero h1{font-size:2.2em;margin:4px 0 8px} .pt-hero h1 small{font-family:var(--sans);font-size:.45em;color:var(--muted);margin-left:8px}
.pt-hero .row{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}
.pt-paper{margin-top:18px}
.pt-bar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 16px;background:var(--paper);border-bottom:1px solid var(--rule)}
.pt-bar > b{font-family:var(--cute);font-weight:400;font-size:1.25em;color:var(--seal)}
.pt-code{font-size:.92em;color:var(--muted)} .pt-code b{font-family:var(--mono);color:var(--ink);letter-spacing:.12em;font-size:1.15em}
.pt-net{width:10px;height:10px;border-radius:50%;background:var(--faint)} .pt-net.on{background:#3FA34D;box-shadow:0 0 0 3px rgba(63,163,77,.2)}
.pt-sp{flex:1}
.pt-grid{display:grid;grid-template-columns:300px minmax(0,1fr);gap:18px;align-items:start}
.pt-qr{text-align:center} .pt-qr .qr{width:240px;margin:0 auto;background:#fff;padding:6px;border-radius:12px} .pt-qr .qr svg{width:100%;height:auto;display:block}
.pt-qc{margin:8px 0 0;font-family:var(--mono);font-weight:600;font-size:2em;letter-spacing:.2em;color:var(--seal)}
.pt-qc.big{font-size:4em}
.pt-people .fl{margin:0 0 10px;font-size:1.05em}
.pt-n{font-family:var(--cute);font-weight:400;font-size:1.3em;color:var(--seal)}
.pt-chips{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 14px;min-height:46px}
.pt-p{position:relative;display:inline-flex;align-items:center;gap:6px;padding:6px 12px 6px 6px;border:1.5px solid var(--rule);border-radius:999px;background:var(--surface);font-weight:600;animation:pop .35s cubic-bezier(.2,1.6,.4,1)}
.pt-p i{font-style:normal;display:grid;place-items:center;min-width:26px;height:26px;border-radius:50%;background:var(--sunken);font-family:var(--mono);font-size:.8em;color:var(--muted)}
.pt-p.on i{background:#3FA34D;color:#fff}
.pt-p.sent{border-color:var(--leaf);background:var(--leaf-soft)} .pt-p em{font-style:normal;color:var(--leaf)}
.pt-p.late{border-style:dashed;border-color:var(--amber)}
.pt-x{border:0;background:var(--seal);color:#fff;width:22px;height:22px;border-radius:50%;cursor:pointer;line-height:1;font-size:.9em;margin-left:2px}
.pt-people .row,.pt-act .row,.pt-lets .row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.pt-mode{margin-top:18px;border-color:var(--amber);background:var(--amber-soft)}
.pt-mode small{display:block;margin-top:2px}
.pt-pairs{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px;margin-top:10px}
.pt-pair{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--rule);border-radius:12px;padding:6px 10px}
.pt-pair span{flex:1;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis} .pt-pair i{font-style:normal;color:var(--seal)}
.pt-pair select{flex:1;min-width:0;font:inherit;padding:6px 8px;border:1.5px solid var(--rule);border-radius:10px;background:var(--surface);color:var(--ink)}
.pt-act,.pt-lets{margin-top:18px}
.pt-lgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px;margin-top:16px}
.pt-lh{margin:0 0 10px;font-weight:700;font-size:.92em;color:var(--muted)}
.pt-lgrid .pl-card{font-size:14px}
.pt-long{width:min(420px,100%);border:1px solid var(--rule);border-radius:8px;margin-top:8px}
.pt-ov{position:fixed;inset:0;z-index:30;display:grid;place-items:center;background:rgba(251,250,246,.97);padding:20px}
.pt-ovin{display:flex;align-items:center;gap:40px;flex-wrap:wrap;justify-content:center;text-align:center;font-size:1.3em}
.pt-ovin .qr{width:min(70vh,560px);background:#fff;padding:10px;border-radius:16px} .pt-ovin .qr svg{width:100%;height:auto;display:block}
@media (max-width:760px){ .pt-grid,.pt-hero{grid-template-columns:1fr} .pt-mb{width:120px} }

/* ---------- 편지 모아 받기·그림 저장 — A4 세로 한 장에 1통 또는 2통 ---------- */
#printroot .pl-sheet{gap:5mm}
#printroot .pl-slot{flex:1;min-height:0;overflow:hidden;display:flex;flex-direction:column;font-size:15pt}
#printroot .per2 .pl-slot{font-size:10pt}
#printroot .pl-head{flex:none;margin:0 0 2.5mm;font-size:.8em;font-weight:700;color:#6E6A63}
#printroot .pl-card{flex:1;font-size:1em;box-shadow:none;border:.4mm solid #E6DCC8}
#printroot .per1 .pl-card{padding:12mm 12mm 10mm}

/* ---------- 그대로 쓰는 것: 약속 카드, 누르고 있는 카드, 좋은 점 카드, 들킬 지수, 밝히는 날 순서, 우체통 표지 ---------- */
.sf-proms{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin:8px 0}
.sf-prom{position:relative;display:flex;align-items:center;gap:12px;text-align:left;padding:14px 16px;border:1.5px solid var(--rule);border-radius:16px;background:var(--surface);cursor:pointer;
  transition:border-color .15s,background .15s,transform .15s;min-height:96px}
.sf-prom:hover{border-color:var(--faint)} .sf-prom:active{transform:scale(.98)}
.sf-prom .mood{width:50px;height:50px}
.sf-pt{display:flex;flex-direction:column;gap:3px}
.sf-pt b{font-family:var(--serif);font-size:1.05em;line-height:1.4}
.sf-pt span{font-size:.88em;color:var(--muted);line-height:1.5}
.sf-seal{position:absolute;right:10px;top:-10px;font-family:var(--cute);font-size:.95em;color:var(--seal);background:var(--surface);border:2px solid var(--seal);border-radius:999px;padding:0 10px;
  transform:rotate(8deg) scale(.6);opacity:0;transition:opacity .2s,transform .25s cubic-bezier(.2,1.6,.4,1)}
.sf-prom.sf-on{border-color:var(--seal);background:color-mix(in srgb,var(--seal-soft) 70%,var(--surface))}
.sf-prom.sf-on .sf-seal{opacity:1;transform:rotate(8deg) scale(1)}

.sf-prom.sf-pop .mood{animation:bounce .5s cubic-bezier(.2,1.6,.4,1)}

.sf-ask{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:8px 0}
.sf-ask .ask{margin:6px 0 0}
.sf-peek{position:relative;width:min(340px,100%);height:200px;border:0;padding:0;background:none;cursor:pointer;perspective:900px;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:none;margin:6px 0}
.sf-pfront,.sf-pback{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border-radius:20px;border:2px solid #2E2A26;
  box-shadow:6px 6px 0 color-mix(in srgb,#2E2A26 22%,transparent);backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .35s ease}
.sf-pfront{background:repeating-linear-gradient(135deg,#FFF6EF 0 12px,#FBE7EE 12px 24px);color:#2E2A26}
.sf-pfront .envl{width:96px;height:auto}
.sf-pfront b{font-family:var(--cute);font-weight:400;font-size:1.35em}
.sf-pfront small{color:#6E6A63}
.sf-pback{background:#FFFDF7;color:#2E2A26;transform:rotateY(180deg)}
.sf-pback small{color:#6E6A63;font-size:.95em}
.sf-pback b{font-family:var(--cute);font-weight:400;font-size:2.6em;line-height:1.2;color:#C2452D}
.sf-peek.sf-on .sf-pfront{transform:rotateY(-180deg)} .sf-peek.sf-on .sf-pback{transform:rotateY(0)}
html.calm .sf-pfront,html.calm .sf-pback{transition:none}

.sf-praise{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:9px;margin:6px 0}
.sf-pr{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:96px;padding:12px 10px;border:1.5px solid var(--rule);border-radius:14px;background:var(--surface);
  cursor:pointer;font-size:.98em;font-weight:600;line-height:1.4;text-align:center;transition:border-color .15s,background .15s,transform .15s}
.sf-pr:hover{border-color:var(--faint)} .sf-pr:active{transform:scale(.97)}
.sf-ic{width:30px;height:30px;color:var(--muted)}
.sf-pr.sf-on{border-color:var(--pink);background:var(--pink-soft);color:var(--pink)} .sf-pr.sf-on .sf-ic{color:var(--pink)}
.sf-pr.no{animation:shake .38s}
.sf-meter{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin:12px 0}
.sf-gauge{width:190px;height:auto;flex:none}
.sf-needle{transform-origin:100px 104px;transition:transform .5s cubic-bezier(.3,1.5,.5,1)}
html.calm .sf-needle{transition:none}
.sf-mtext{flex:1;min-width:220px}
.sf-mtext ul{margin:6px 0;padding-left:1.1em} .sf-mtext li{margin:3px 0;font-size:.95em}
.sf-mword{font-family:var(--cute);font-weight:400;font-size:1.15em}
.sf-mword.sf-lo{color:var(--leaf)} .sf-mword.sf-mid{color:var(--yel)} .sf-mword.sf-hi{color:var(--seal)}



.sf-steps{list-style:none;padding:0;margin:14px 0;display:grid;gap:10px;counter-reset:sfs}
.sf-steps li{display:flex;flex-direction:column;gap:2px;background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:12px 16px 12px 52px;position:relative;counter-increment:sfs}
.sf-steps li::before{content:counter(sfs);position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:50%;background:var(--seal);color:var(--on);display:grid;place-items:center;font-family:var(--mono);font-weight:600}
.sf-steps b{font-family:var(--serif)} .sf-steps span{color:var(--muted);font-size:.95em}


#printroot .pr-sf-box{flex-direction:row;align-items:center;gap:10mm;padding:10mm 14mm;border:1.2mm solid #2B2523;border-radius:6mm}
#printroot .pr-sf-bl{flex:none;width:86mm}
#printroot .pr-sf-bl svg{width:100%;height:auto}
#printroot .pr-sf-br{flex:1;display:flex;flex-direction:column;gap:3mm}
#printroot .pr-sf-cls{margin:0;font-family:"Jua",sans-serif;font-size:20pt;color:#C2452D;min-height:9mm}
#printroot .pr-sf-br h1{font-size:54pt;line-height:1.05}
#printroot .pr-sf-sub{margin:0;font-size:16pt;color:#6E6A63}
#printroot .pr-sf-br ul{margin:3mm 0 0;padding-left:6mm;font-size:15pt;line-height:1.7}
#printroot .pr-sf-br ul b{color:#C2452D}
#printroot .pr-sf-slot{margin:4mm 0 0;font-family:"Jua",sans-serif;font-size:18pt;color:#2B2523;background:#FFE58A;border-radius:99px;padding:1.5mm 7mm;align-self:flex-start}
/* ========== 11-14 그래픽 고도화 — 빛이 든 우체통·봉투·배지와 움직임. 위 규칙을 덮어쓴다 ========== */
.pbox,.envr,.sbadge,.angl{display:block;width:100%;height:auto}
.envr{filter:drop-shadow(0 4px 6px rgba(60,40,20,.16))}

/* 1. 첫 화면 — 우체통 둘레를 떠다니는 봉투, 한 통은 투입구로 쏙 */
.sf-hero{background:radial-gradient(circle at 50% 62%,color-mix(in srgb,var(--seal-soft) 90%,transparent),transparent 66%)}
.sf-hmb{left:30%;top:13%;width:40%;animation:sfgulp2 4.8s ease-in-out infinite;transform-origin:50% 100%}
.sf-hl{width:28%} .sf-hl svg{filter:drop-shadow(0 8px 10px rgba(60,40,20,.18))}
.sf-hl0{left:0;top:10%} .sf-hl1{right:-2%;top:28%} .sf-hl2{left:4%;bottom:10%}
.sf-hin{position:absolute;width:22%;left:-6%;top:4%;opacity:0;animation:sfin 4.8s ease-in-out infinite;z-index:2}
@keyframes sfin{0%{left:-6%;top:2%;opacity:0;transform:translate(-50%,-50%) rotate(-24deg)}12%{opacity:1}
  55%{left:50%;top:28%;transform:translate(-50%,-50%) rotate(0) scale(.95)}78%{left:50%;top:40%;opacity:1;transform:translate(-50%,-50%) scale(.82)}
  90%,100%{left:50%;top:42%;opacity:0;transform:translate(-50%,-30%) scale(.8,.04)}}
@keyframes sfgulp2{0%,80%,100%{transform:none}86%{transform:scale(1.04,.96)}92%{transform:scale(.99,1.01)}}
.sf-inface{flex:none;width:76px} .sf-inface .envr{animation:bounce .6s cubic-bezier(.2,1.6,.4,1)}

/* 2. 기다리기 — 우체통이 똑똑, 바닥에 물결 */
.sf-wpb,.sf-wenv,.sf-rvq{position:relative;flex:none;display:block}
.sf-wpb{width:78px} .sf-wpb .pbox{position:relative;z-index:1;animation:sfknock 1.8s ease-in-out infinite;transform-origin:50% 100%}
.sf-wpb::before,.sf-wpb::after{content:"";position:absolute;left:50%;bottom:0;width:90px;height:18px;margin-left:-45px;border-radius:50%;border:2px solid var(--seal);opacity:0;animation:sfripple 2.4s ease-out infinite}
.sf-wpb::after{animation-delay:1.2s}
@keyframes sfripple{0%{transform:scale(.4);opacity:.5}100%{transform:scale(1.5);opacity:0}}
.sf-wenv{width:110px} .sf-ready .sf-wenv{animation:bounce .8s cubic-bezier(.2,1.6,.4,1)}

/* 약속 배지 */
.sf-prom .sbadge{flex:none;width:54px;transition:transform .2s}
.sf-prom.sf-on .sbadge{transform:rotate(-8deg)}
.sf-prom.sf-pop .sbadge{animation:bounce .5s cubic-bezier(.2,1.6,.4,1)}

/* 누르고 보는 카드 — 앞은 밤하늘 봉인 카드, 뒤는 금테 이름 카드 */
.sf-peek{height:230px}
.sf-pfront,.sf-pback{border:0;box-shadow:0 18px 30px -14px rgba(20,24,48,.55),0 2px 4px rgba(0,0,0,.12)}
.sf-pfront{color:#FFF3D6;background:radial-gradient(circle at 20% 22%,rgba(255,255,255,.9) 0 1px,transparent 2px),radial-gradient(circle at 78% 30%,rgba(255,255,255,.7) 0 1px,transparent 2px),
  radial-gradient(circle at 64% 80%,rgba(255,255,255,.8) 0 1.5px,transparent 2.5px),radial-gradient(circle at 12% 74%,rgba(255,230,160,.9) 0 1.5px,transparent 2.5px),radial-gradient(circle at 88% 64%,rgba(255,230,160,.8) 0 1px,transparent 2px),
  linear-gradient(160deg,#2D3A6E,#151B38)}
.sf-pfront::after{content:"";position:absolute;inset:8px;border:1.5px solid rgba(244,192,78,.55);border-radius:14px;pointer-events:none}
.sf-pfront .envr{width:120px;animation:sffloat 2.6s ease-in-out infinite}
.sf-pfront small{color:#C9CEE6}
.sf-pback{background:linear-gradient(180deg,#FFFDF7,#FBF1DE)}
.sf-pback::after{content:"";position:absolute;inset:8px;border:2px solid #E9B949;border-radius:14px;pointer-events:none}
.sf-pang{width:96px;margin-bottom:-6px}

/* 3. 수호천사 칸 */
.sf-ahalo{width:150px} .sf-ahalo::before{display:none}
.sf-ahalo .angl{animation:sffloat 2.6s ease-in-out infinite}
.pl-wing{width:4.8em;right:.5em;top:.3em}

/* 4. 보내기 — 편지가 작아져 봉투가 되고, 둥실 날아 투입구로 */
.sf-sendwrap{position:relative}
.sf-sendside .pbox{width:130px}
.sf-flyenv{position:absolute;width:120px;opacity:0;pointer-events:none;z-index:3;transform:translate(-50%,-50%)}
.sf-fly .sf-pvcard{animation:sffold .55s ease-in forwards;transform-origin:50% 30%}
.sf-fly .sf-flyenv{animation:sfenv 1.45s cubic-bezier(.45,0,.4,1) .35s forwards}
.sf-fly .sf-sendside svg{animation:sfgulp .45s ease-out 1.65s}
@keyframes sffold{to{transform:scale(.25) rotate(-4deg);opacity:0}}
@keyframes sfenv{0%{opacity:0;transform:translate(-50%,-50%) scale(.4)}18%{opacity:1;transform:translate(-50%,-50%) scale(1) rotate(-6deg)}
  55%{transform:translate(calc(-50% + var(--dx) * .55),calc(-50% + var(--dy) * .55 - 70px)) scale(.75) rotate(10deg)}
  86%{opacity:1;transform:translate(calc(-50% + var(--dx)),calc(-50% + var(--dy) - 16px)) scale(.48) rotate(0)}
  100%{opacity:0;transform:translate(calc(-50% + var(--dx)),calc(-50% + var(--dy) + 4px)) scale(.46,.04)}}
@media (max-width:640px){ .sf-fly .sf-pvcard{animation-name:sffold} .sf-sendside .pbox{width:100px} }

/* 새 편지 팝업 — 밀랍 도장이 톡, 덮개가 젖혀지고, 편지지가 쏙 */
.pl-envwrap{width:240px}
.pe{position:relative;width:240px;height:160px;perspective:900px;filter:drop-shadow(0 16px 16px rgba(60,40,20,.25));animation:plwob 1.6s ease-in-out .9s infinite}
.pe-in{position:absolute;inset:0;border-radius:6px;background:linear-gradient(#DCCDB0,#CDBB98)}
.pe-sheet{position:absolute;left:16px;right:16px;top:10px;height:136px;z-index:1;display:flex;flex-direction:column;gap:13px;padding:24px 20px;border-radius:4px;background:#FFFDF7;box-shadow:0 0 0 1px rgba(0,0,0,.06);
  transition:transform .65s cubic-bezier(.3,1.3,.5,1) .45s}
.pe-sheet i{display:block;height:5px;border-radius:3px;background:#EADFCB} .pe-sheet i:nth-child(1){width:46%;background:#F0B9C9} .pe-sheet i:nth-child(3){width:84%} .pe-sheet i:nth-child(4){width:62%}
.pe-pocket{position:absolute;inset:0;z-index:2;width:100%;height:100%;border-radius:6px;overflow:hidden}
.pe-flap{position:absolute;left:0;right:0;top:0;height:98px;z-index:3;transform-origin:50% 0;clip-path:polygon(0 0,100% 0,50% 100%);background:linear-gradient(#FFFDF6,#E9DEC8);
  transition:transform .5s ease-in,z-index 0s .25s}
.pe-seal{position:absolute;left:50%;top:78px;z-index:4;width:42px;height:42px;margin-left:-21px;display:grid;place-items:center;border-radius:47% 53% 45% 55%;color:#8E1A13;font-size:18px;
  background:radial-gradient(circle at 38% 32%,#F26A5B,#C62F22 55%,#7E160F);box-shadow:inset 0 0 0 5px rgba(126,22,15,.3),0 2px 4px rgba(0,0,0,.3);transition:transform .25s,opacity .25s}
.pe-open .pe{animation:none}
.pe-open .pe-seal{transform:scale(1.5) rotate(20deg);opacity:0}
.pe-open .pe-flap{transform:rotateX(180deg);z-index:0}
.pe-open .pe-sheet{transform:translateY(-58%)}
.pe-open + .pl-spark,.pe-open .pl-spark{animation-duration:.6s}

/* 6. 밝히는 날 — 봉투가 두구두구 흔들리다 카드가 뒤집히며 꽃가루 */
.sf-rv{position:relative}
.sf-rvq{width:120px} .sf-rvq b{position:absolute;right:-12px;top:-14px;display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#6E55B8;color:#fff;font-family:var(--cute);font-weight:400;font-size:1.5em;box-shadow:0 4px 8px rgba(0,0,0,.2)}
.sf-wait .sf-rvq{width:96px}
.sf-rv.sf-drum .sf-rvq{animation:sfdrum .22s linear infinite}
.sf-rvang{width:150px}
.sf-rv.sf-shown{background:radial-gradient(circle at 50% 0,#FFF6DC,var(--seal-soft) 70%)}
.sf-flipin{animation:sfflip .7s cubic-bezier(.2,1.2,.4,1)}
@keyframes sfflip{from{transform:perspective(900px) rotateY(90deg)}}
.cf{position:absolute;left:50%;top:40%;width:0;height:0;pointer-events:none}
.cf i{position:absolute;width:8px;height:13px;border-radius:2px;opacity:0;animation:cfburst 1.4s cubic-bezier(.2,.8,.3,1) forwards}
@keyframes cfburst{0%{opacity:1;transform:translate(0,0) rotate(0)}70%{opacity:1}100%{opacity:0;transform:translate(var(--x),calc(var(--y) + 60px)) rotate(calc(var(--r) + 360deg))}}

/* 선생님 화면 — QR 판은 항공 우편 테두리 */
.pt-mb{max-width:170px}
.pt-qr{border:9px solid transparent;background:linear-gradient(var(--surface),var(--surface)) padding-box,repeating-linear-gradient(-45deg,#C62F22 0 14px,#fff 14px 22px,#2F5C9E 22px 36px,#fff 36px 44px) border-box}

/* ========== 11-14 선생님 화면 그래픽 고도화 ========== */
/* 첫 화면 — 움직이는 우체통 무대 + 수업 흐름 그림 카드 넷 */
.pt-hero{grid-template-columns:300px 1fr}
.pt-stagehero{max-width:300px}
.pt-how{list-style:none;margin:6px 0 22px;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.pt-how li{display:flex;flex-direction:column;gap:4px;padding:0 0 16px;border-radius:18px;background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow);overflow:hidden;animation:up .5s ease-out both}
.pt-hart{display:grid;place-items:center;height:130px;margin-bottom:8px;background:radial-gradient(circle at 50% 70%,#FFF6DC,#F6EBD6 70%)}
.pt-hart > svg{width:120px;height:auto} .pt-hart .angl{width:140px}
.pt-qrmini{display:block;width:92px;padding:6px;background:#fff;border-radius:10px;box-shadow:0 8px 16px -6px rgba(0,0,0,.3);transform:rotate(-6deg)} .pt-qrmini svg{display:block;width:100%;height:auto}
.pt-how b{display:flex;align-items:center;gap:8px;padding:0 16px;font-family:var(--serif);font-size:1.08em}
.pt-how b i{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--seal);color:#fff;font-style:normal;font-family:var(--mono);font-size:.85em}
.pt-how li > span:last-child{padding:0 16px;color:var(--muted);font-size:.92em;line-height:1.55}
.ring{display:block;width:100%;height:auto}
.ring .rg-e{stroke-dasharray:1;animation:rgdraw .7s ease-out both}
@keyframes rgdraw{from{stroke-dashoffset:1}}
.ring.sm{width:104px} .ring.sm .rg-e{animation-duration:.5s}
@media (max-width:900px){ .pt-how{grid-template-columns:repeat(2,minmax(0,1fr))} }

/* 머리 막대 — 우체국 간판처럼 */
.pt-bar{background:linear-gradient(180deg,#C92B20,#9E1F17);border-bottom:0;box-shadow:0 6px 16px -8px rgba(126,22,15,.6);color:#fff}
.pt-bar > b{color:#fff;font-size:1.3em;text-shadow:0 1px 0 rgba(0,0,0,.2)}
.pt-bmb{width:24px;flex:none} .pt-bmb .pbox{filter:drop-shadow(0 0 1px #fff) brightness(1.1)}
.pt-code{color:rgba(255,255,255,.85);background:rgba(0,0,0,.18);border-radius:999px;padding:3px 12px} .pt-code b{color:#fff}
.pt-net{background:rgba(255,255,255,.5)} .pt-net.on{background:#6EE07B;box-shadow:0 0 0 3px rgba(110,224,123,.3)}
.pt-bar .btn{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.45)}
.pt-bar .btn:hover{background:rgba(255,255,255,.26)}

/* 지금 어디까지 — 네 정거장 */
.pt-flow{list-style:none;margin:0 0 18px;padding:14px 10px;display:grid;grid-template-columns:repeat(4,1fr);border-radius:18px;background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow)}
.pt-flow li{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center}
.pt-flow li + li::before{content:"";position:absolute;top:17px;right:calc(50% + 24px);left:calc(-50% + 24px);height:3px;border-radius:2px;background:var(--rule)}
.pt-flow li.done + li::before{background:var(--leaf)}
.pt-flow i{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--sunken);color:var(--muted);font-style:normal;font-family:var(--mono);font-weight:700}
.pt-flow .done i{background:var(--leaf);color:#fff}
.pt-flow .now i{background:var(--seal);color:#fff;animation:ptpulse 1.8s ease-out infinite}
.pt-flow b{font-size:.98em} .pt-flow small{color:var(--muted);font-size:.82em}
.pt-flow .now b{color:var(--seal)}
@keyframes ptpulse{0%{box-shadow:0 0 0 0 rgba(198,47,34,.45)}100%{box-shadow:0 0 0 14px rgba(198,47,34,0)}}

/* 편지 막대 */
.pt-meter{height:10px;margin:-2px 0 14px;border-radius:99px;background:var(--sunken);overflow:hidden}
.pt-meter span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#F0604F,#C62F22);transition:width .6s cubic-bezier(.3,1.3,.5,1)}

/* 들어온 아이 — 봉투 타일(우표에 번호, 왼쪽 아래 접속 불빛, 보내면 밀랍 도장) */
.pt-chips{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:12px}
.pt-p{position:relative;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:0;height:86px;padding:0 8px 12px;border:1px solid #E2D6BE;border-radius:8px;
  background:linear-gradient(180deg,#FFFDF6,#F1E8D6);color:#2E2A26;box-shadow:0 6px 12px -8px rgba(60,40,20,.45);animation:ptin .4s cubic-bezier(.2,1.5,.4,1) both}
.pt-p::before{content:"";position:absolute;left:0;right:0;top:0;height:40px;clip-path:polygon(0 0,100% 0,50% 100%);background:linear-gradient(180deg,#FBF6EA,#E6D9BF);border-radius:8px 8px 0 0}
.pt-p b{position:relative;font-size:1.02em;max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pt-p i{position:absolute;top:7px;right:7px;z-index:1;display:grid;place-items:center;min-width:24px;height:28px;padding:0 3px;border-radius:2px;background:#F6C451;color:#7A4B00;
  outline:2px dashed #fff;outline-offset:-3px;font-style:normal;font-family:var(--mono);font-size:.78em;font-weight:700;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.pt-p.on i{background:#F6C451;color:#7A4B00}
.pt-p::after{content:"";position:absolute;left:9px;bottom:9px;width:8px;height:8px;border-radius:50%;background:#C9C2B4}
.pt-p.on::after{background:#3FA34D;box-shadow:0 0 0 3px rgba(63,163,77,.22)}
.pt-p.sent{border-color:#E2D6BE;background:linear-gradient(180deg,#FFF7F4,#F6E2DA)}
.pt-seal{position:absolute;left:50%;top:15px;z-index:1;width:26px;height:26px;margin-left:-13px;display:grid;place-items:center;border-radius:47% 53% 45% 55%;font-style:normal;font-size:12px;color:#8E1A13;
  background:radial-gradient(circle at 38% 32%,#F26A5B,#C62F22 55%,#7E160F);box-shadow:inset 0 0 0 3px rgba(126,22,15,.3),0 2px 3px rgba(0,0,0,.25);animation:ptstamp .45s cubic-bezier(.2,1.6,.4,1)}
.pt-seal svg{width:12px;height:12px}
.pt-p.late{border:2px dashed var(--amber)}
.pt-p .pt-x{position:absolute;left:-7px;top:-7px;z-index:2;margin:0}
.pt-shuffle .pt-p{animation:ptmix 1s ease-in-out}
@keyframes ptin{from{transform:translateY(-14px) rotate(-6deg) scale(.7);opacity:0}}
@keyframes ptstamp{from{transform:scale(2.2);opacity:0}}
@keyframes ptmix{30%{transform:translate(calc((var(--k) - 3) * 16px),-16px) rotate(calc((var(--k) - 3) * 6deg))}65%{transform:translate(calc((3 - var(--k)) * 14px),10px) rotate(calc((3 - var(--k)) * 5deg))}}
.pt-empty{grid-column:1/-1;display:flex;align-items:center;gap:16px;margin:0;color:var(--muted)} .pt-empty .envr{width:90px;flex:none;animation:sffloat 2.6s ease-in-out infinite}

/* 교사 모드 고리 */
.pt-ring{max-width:580px;margin:12px auto 4px;padding:8px;border-radius:50%;background:radial-gradient(circle,var(--surface) 60%,transparent 72%)}

/* 밝히는 날 띠 */
.pt-rvban{display:flex;align-items:center;gap:16px;margin-top:12px;padding:12px 18px;border-radius:16px;background:radial-gradient(circle at 10% 50%,#FFF6DC,#F3EDFC 70%);color:#2E2A26}
.pt-rvban .angl{width:110px;flex:none;animation:sffloat 2.6s ease-in-out infinite} .pt-rvban p{margin:0} .pt-rvban b{font-family:var(--cute);font-weight:400;font-size:1.25em;color:#6A4FA0}

/* QR 크게 */
.pt-ovin .pt-air{border:12px solid transparent;background:linear-gradient(#fff,#fff) padding-box,repeating-linear-gradient(-45deg,#C62F22 0 18px,#fff 18px 28px,#2F5C9E 28px 46px,#fff 46px 56px) border-box}
.pt-ovmb{display:block;width:90px;margin:0 auto 8px}
@media (max-width:760px){ .pt-hero{grid-template-columns:1fr} .pt-stagehero{max-width:220px} .pt-flow b{font-size:.85em} }