/* ============================================================
   인크리딩 학습관리 — High-end Design System
   ink navy · antique gold · warm ivory  /  serif display + sans body
   ============================================================ */
:root{
  --ink:#0e1a2b; --ink-2:#16263c;
  --navy:#16263c; --navy-soft:#24364f;
  --gold:#b08d3e; --gold-d:#96762e; --gold-l:#d7bd7f; --gold-bg:#faf6ec;
  --bg:#f5f4f0; --card:#ffffff; --line:#e7e3d9; --line-2:#efece4;
  --tx:#1c2532; --tx2:#7b8494; --tx3:#a3aab6;
  --green:#2e7d4f; --green-bg:#e9f4ee;
  --red:#b3402e; --red-bg:#faeeeb;
  --blue:#2f6df6; --amber:#a06614; --amber-bg:#fbf3e2;
  --shadow-sm:0 1px 2px rgba(14,26,43,.05),0 4px 14px rgba(14,26,43,.05);
  --shadow-md:0 2px 6px rgba(14,26,43,.06),0 14px 34px rgba(14,26,43,.09);
  --serif:'Noto Serif KR',serif;
  --sans:'Pretendard Variable',Pretendard,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-font-smoothing:antialiased}
body{font-family:var(--sans);background:var(--bg);color:var(--tx);font-size:15px;line-height:1.65;letter-spacing:-.01em}
a{color:var(--navy);text-decoration:none;transition:color .15s}
::selection{background:var(--gold-l);color:var(--ink)}

/* ---------- Topbar ---------- */
.topbar{background:linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 100%);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 30px;min-height:66px;flex-wrap:wrap;position:sticky;top:0;z-index:80;border-bottom:1px solid rgba(215,189,127,.22)}
.brand{color:#fff;font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:.02em;display:flex;align-items:center;gap:11px;padding:12px 0}
.brand small{font-family:var(--sans);font-weight:400;font-size:11px;letter-spacing:.22em;color:var(--gold-l);text-transform:uppercase}
.brand-mark{width:34px;height:34px;border-radius:9px;overflow:hidden;flex:0 0 auto;background:url('/favicon-192.png') center/cover;box-shadow:0 0 0 1px rgba(215,189,127,.35)}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a{color:#c8d2e0;font-size:13.5px;font-weight:500;padding:9px 13px;border-radius:8px;position:relative;transition:all .18s}
.nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav a.on{color:var(--gold-l)}
.nav a.on::after{content:'';position:absolute;left:13px;right:13px;bottom:4px;height:2px;background:var(--gold);border-radius:2px}
.nav .btn-sm{background:rgba(215,189,127,.14);border:1px solid rgba(215,189,127,.4);color:var(--gold-l);padding:7px 15px;border-radius:8px;margin-left:8px}
.nav .btn-sm:hover{background:rgba(215,189,127,.24);color:#fff}

/* ---------- Layout ---------- */
.wrap{max-width:1140px;margin:34px auto 70px;padding:0 22px}
.foot{text-align:center;color:var(--tx3);font-size:12px;letter-spacing:.06em;padding:30px 0 46px}
h1.pt{font-family:var(--serif);font-size:26px;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin-bottom:5px}
.pt-sub{color:var(--tx2);font-size:13.5px;margin-bottom:26px}
.pt-sub a{color:var(--gold-d);font-weight:600}
.pt-sub a:hover{color:var(--gold)}

/* ---------- Card ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 28px;margin-bottom:20px;box-shadow:var(--shadow-sm)}
.card h2{font-family:var(--serif);font-size:16.5px;font-weight:700;color:var(--ink);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line-2);display:flex;align-items:center;gap:8px}
.card h2::before{content:'';width:4px;height:16px;border-radius:2px;background:var(--gold)}

/* ---------- Notice banners ---------- */
.flash{background:var(--green-bg);border:1px solid #cfe6d8;color:var(--green);padding:12px 18px;border-radius:12px;margin-bottom:18px;font-size:14px}
.err{background:var(--red-bg);border:1px solid #ecd0c8;color:var(--red);padding:12px 18px;border-radius:12px;margin-bottom:18px;font-size:14px}

/* ---------- Forms ---------- */
label.f{display:block;font-size:11.5px;font-weight:700;color:var(--tx2);letter-spacing:.08em;margin:14px 0 6px;text-transform:uppercase}
input.f,select.f,textarea.f{width:100%;padding:11px 14px;border:1px solid #d8d3c6;border-radius:10px;font-size:15px;font-family:inherit;background:#fdfdfb;color:var(--tx);transition:border .15s, box-shadow .15s}
input.f:focus,select.f:focus,textarea.f:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(176,141,62,.16);background:#fff}
textarea.f{min-height:110px;resize:vertical;line-height:1.7}
input.f::placeholder,textarea.f::placeholder{color:var(--tx3)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:var(--ink-2);color:#fff;border:0;border-radius:10px;padding:11px 22px;font-size:14px;font-weight:600;letter-spacing:.01em;cursor:pointer;font-family:inherit;transition:all .18s;box-shadow:0 1px 2px rgba(14,26,43,.15)}
.btn:hover{background:var(--ink);transform:translateY(-1px);box-shadow:0 4px 12px rgba(14,26,43,.18)}
.btn.gold{background:linear-gradient(135deg,var(--gold) 0%,var(--gold-d) 100%);color:#fff}
.btn.gold:hover{filter:brightness(1.07)}
.btn.green{background:var(--green)}
.btn.green:hover{background:#25693f}
.btn.ghost{background:#fff;color:var(--navy);border:1px solid #d5cfc0;box-shadow:none}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold-d);background:var(--gold-bg);transform:none;box-shadow:none}
.btn.danger{background:#fff;color:var(--red);border:1px solid #e4c4bc;box-shadow:none}
.btn.danger:hover{background:var(--red);color:#fff;border-color:var(--red);transform:none}
.btn.sm{padding:6px 13px;font-size:12.5px;border-radius:8px}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important}
.spin{width:14px;height:14px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;display:inline-block;animation:spin .7s linear infinite}
.btn.ghost .spin,.btn.danger .spin{border-color:rgba(0,0,0,.15);border-top-color:var(--tx2)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Auth ---------- */
.auth-box{max-width:440px;margin:54px auto}
.auth-box .card{padding:40px 38px;border-top:3px solid var(--gold);box-shadow:var(--shadow-md)}
.auth-brand{text-align:center;margin-bottom:26px}
.auth-brand .bm{width:58px;height:58px;border-radius:15px;margin:0 auto 14px;background:url('/favicon-192.png') center/cover;box-shadow:var(--shadow-sm)}
.auth-brand h1{font-family:var(--serif);font-size:23px;font-weight:700;color:var(--ink)}
.auth-brand p{font-size:11px;letter-spacing:.24em;color:var(--gold-d);text-transform:uppercase;margin-top:4px}
.auth-links{display:flex;justify-content:space-between;font-size:13px;margin-top:18px}
.auth-links a{color:var(--tx2)}
.auth-links a:hover{color:var(--gold-d)}

/* ---------- Tables ---------- */
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{text-align:left;padding:10px 14px;font-size:11px;font-weight:700;color:var(--tx2);letter-spacing:.1em;text-transform:uppercase;border-bottom:2px solid var(--line);white-space:nowrap;background:transparent}
table.t td{padding:13px 14px;border-bottom:1px solid var(--line-2);vertical-align:middle}
table.t tr:last-child td{border-bottom:0}
table.t tbody tr,table.t tr{transition:background .12s}
table.t tr:hover td{background:#fbfaf6}

/* ---------- Badges ---------- */
.badge{display:inline-block;padding:3px 11px;border-radius:30px;font-size:11px;font-weight:700;letter-spacing:.03em}
.b-navy{background:#e8edf6;color:var(--navy)}
.b-green{background:var(--green-bg);color:var(--green)}
.b-amber{background:var(--amber-bg);color:var(--amber)}
.b-red{background:var(--red-bg);color:var(--red)}
.b-gray{background:#efedE7;color:var(--tx2)}
.b-gold{background:var(--gold-bg);color:var(--gold-d)}

/* ---------- Grid / Stats ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.grid2,.grid3{grid-template-columns:1fr}.wrap{margin-top:22px}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.stat::after{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gold)}
.stat .n{font-family:var(--serif);font-size:30px;font-weight:700;color:var(--ink);line-height:1.2}
.stat .l{font-size:12px;color:var(--tx2);letter-spacing:.04em;margin-top:3px}
.inline-form{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.inline-form>div{flex:1;min-width:130px}
.muted{color:var(--tx2);font-size:13px}
code.k{background:var(--gold-bg);border:1px solid #eadfc2;color:var(--gold-d);padding:3px 10px;border-radius:7px;font-weight:700;letter-spacing:.14em;font-size:13px}

/* ---------- Calendar ---------- */
.cal{width:100%;border-collapse:collapse;table-layout:fixed}
.cal th{padding:9px 4px;font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--tx2);border:1px solid var(--line);background:#faf9f5}
.cal td{border:1px solid var(--line);vertical-align:top;height:100px;padding:5px;font-size:12px;background:#fff;transition:background .12s}
.cal td:hover{background:#fbfaf6}
.cal td.out{background:#f7f6f2}
.cal td.paused{background:repeating-linear-gradient(45deg,#fdf6f4,#fdf6f4 8px,#fbefec 8px,#fbefec 16px)}
.cal .dnum{font-weight:700;font-size:12px;margin-bottom:4px;color:var(--tx2)}
.cal td.today .dnum{color:#fff;background:var(--gold);border-radius:50%;width:21px;height:21px;display:inline-flex;align-items:center;justify-content:center}
.cal .ev{display:block;border-radius:6px;padding:3px 6px;margin-bottom:3px;color:#fff;font-size:11px;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:transform .12s}
.cal .ev:hover{transform:translateX(2px)}
.cal .ev .st{opacity:.92}
.cal .ev.done{outline:2px solid rgba(46,125,79,.55);outline-offset:-1px}
.cal .ev.miss{opacity:.5}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12.5px;margin:12px 0;color:var(--tx2)}
.legend .sw{display:inline-block;width:12px;height:12px;border-radius:3px;vertical-align:-1px;margin-right:5px}

/* ---------- Timer ---------- */
.timer-hero{text-align:center;padding:44px 20px 38px}
.timer-phase{font-size:12px;font-weight:700;letter-spacing:.28em;text-transform:uppercase;color:var(--gold-d);margin-bottom:10px}
.timer-clock{font-family:var(--serif);font-size:88px;font-weight:700;letter-spacing:.02em;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.1}
.timer-bar{height:8px;background:#ece9e0;border-radius:6px;overflow:hidden;max-width:520px;margin:26px auto 18px}
.timer-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--gold-l),var(--gold));width:0%;transition:width .5s linear;border-radius:6px}
.sentence-count{font-size:12.5px;color:var(--tx2);text-align:right;margin-top:6px;letter-spacing:.03em}

/* ---------- Markdown body ---------- */
.mdbody{line-height:1.8}
.mdbody h1,.mdbody h2,.mdbody h3,.mdbody h4,.mdbody h5{font-family:var(--serif);color:var(--ink);margin:22px 0 10px}
.mdbody h2{font-size:20px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.mdbody h3{font-size:16.5px}
.mdbody p{margin:9px 0}
.mdbody ul{margin:9px 0 9px 22px}
.mdbody li{margin:3px 0}
.mdbody table{border-collapse:collapse;width:100%;margin:12px 0;font-size:13.5px}
.mdbody td{border:1px solid var(--line);padding:9px 12px}
.mdbody code{background:var(--gold-bg);padding:1px 7px;border-radius:5px;font-size:13px}
.mdbody strong{color:var(--ink)}
.score-big{font-family:var(--serif);font-size:46px;font-weight:700;color:var(--green);line-height:1.1}
.score-big.low{color:var(--red)}

/* ---------- Toast ---------- */
#toast-wrap{position:fixed;top:80px;right:22px;z-index:9999;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.toast{display:flex;align-items:flex-start;gap:11px;min-width:280px;max-width:400px;background:var(--ink);color:#f2f5f9;padding:14px 18px;border-radius:13px;font-size:13.8px;line-height:1.55;box-shadow:0 10px 34px rgba(14,26,43,.32);opacity:0;transform:translateX(24px);transition:all .35s cubic-bezier(.21,1.02,.55,1);border-left:3px solid var(--gold)}
.toast.show{opacity:1;transform:translateX(0)}
.toast-ic{flex:0 0 auto;width:21px;height:21px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:900;margin-top:1px}
.toast-ok{border-left-color:#3fa06b}
.toast-ok .toast-ic{background:rgba(63,160,107,.25);color:#7fd6a4}
.toast-err{border-left-color:#d4604c}
.toast-err .toast-ic{background:rgba(212,96,76,.25);color:#f0a294}
.toast-info .toast-ic{background:rgba(215,189,127,.22);color:var(--gold-l)}
@media(max-width:600px){#toast-wrap{left:16px;right:16px}.toast{min-width:0;width:100%}}

/* ---------- Modal (팝업 레이어) ---------- */
.modal-back{position:fixed;inset:0;background:rgba(10,18,30,.55);backdrop-filter:blur(3px);z-index:9000;display:flex;align-items:center;justify-content:center;padding:22px;opacity:0;transition:opacity .25s}
.modal-back.show{opacity:1}
.modal-card{background:#fff;border-radius:18px;max-width:460px;width:100%;padding:30px 30px 24px;box-shadow:0 30px 80px rgba(10,18,30,.35);border-top:3px solid var(--gold);transform:translateY(14px) scale(.98);transition:transform .28s cubic-bezier(.21,1.02,.55,1)}
.modal-back.show .modal-card{transform:translateY(0) scale(1)}
.modal-title{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px}
.modal-body{font-size:14.5px;color:var(--tx);line-height:1.7;margin-bottom:22px;white-space:pre-line}
.modal-actions{display:flex;justify-content:flex-end;gap:9px}
.test-row{display:flex;gap:12px;padding:8px 0;border-bottom:1px solid var(--line-2);font-size:13.5px}
.test-row b{flex:0 0 90px;color:var(--ink)}

/* ---------- 인크리딩 리치에디터 ---------- */
.ed-toolbar{display:flex;gap:4px;flex-wrap:wrap;align-items:center;background:#faf9f5;border:1px solid var(--line);border-bottom:0;border-radius:12px 12px 0 0;padding:9px 12px;position:sticky;top:66px;z-index:20}
.ed-btn{border:1px solid transparent;background:transparent;border-radius:7px;padding:6px 11px;font-size:13px;font-family:inherit;color:var(--tx);cursor:pointer;transition:all .13s;line-height:1.2}
.ed-btn:hover{background:#fff;border-color:var(--gold-l);color:var(--gold-d)}
.ed-sep{width:1px;height:20px;background:var(--line);margin:0 6px}
.ed-area{border:1px solid var(--line);border-radius:0 0 12px 12px;background:#fff;min-height:480px;max-height:72vh;overflow-y:auto;padding:34px 40px;font-size:15.5px;line-height:1.95;outline:none;box-shadow:inset 0 2px 6px rgba(14,26,43,.03)}
.ed-area:focus{border-color:var(--gold);box-shadow:inset 0 2px 6px rgba(14,26,43,.03),0 0 0 3px rgba(176,141,62,.14)}
.ed-area:empty::before,.ed-area p:only-child:empty::before{content:attr(data-placeholder);color:var(--tx3)}
.ed-area h2{font-family:var(--serif);font-size:21px;margin:22px 0 10px;color:var(--ink)}
.ed-area h3{font-family:var(--serif);font-size:16px;margin:20px 0 8px;color:var(--gold-d);padding-bottom:5px;border-bottom:1px dashed var(--line)}
.ed-area p{margin:0 0 12px}
.ed-area blockquote{border-left:3px solid var(--gold-l);background:var(--gold-bg);padding:10px 16px;margin:12px 0;border-radius:0 8px 8px 0}
.ed-area ul,.ed-area ol{margin:10px 0 10px 24px}
.ed-area hr{border:0;border-top:1px solid var(--line);margin:20px 0}
.ed-area mark{background:#fdf3c9}
@media(max-width:700px){.ed-area{padding:20px 16px}}

/* ---------- Details/summary ---------- */
details summary{cursor:pointer}
details summary::-webkit-details-marker{display:none}

@media print{.topbar,.foot,.no-print,#toast-wrap,.modal-back{display:none!important}.wrap{margin:0;max-width:100%}.card{border:0;padding:0;box-shadow:none}body{background:#fff}}