/* EduResearch Hub — phong cách "sổ tay phòng thí nghiệm": giấy kem, mực xanh đen, bút đỏ của thầy cô. */

:root {
  --paper: #f6f1e7;
  --paper-2: #efe8d9;
  --sheet: #fffdf8;
  --ink: #1d2b36;
  --ink-2: #3c4a55;
  --muted: #74705f;
  --rule: #e4dccb;
  --rule-strong: #d3c8b2;
  --line: #e9e3f2;          /* dòng kẻ giấy */
  --margin: #e3a99b;        /* lề đỏ của vở */

  --green: #2f5d4a;
  --green-2: #3f7a61;
  --green-soft: #e3ece4;
  --red-pen: #b2442b;
  --red-soft: #f8e7e0;
  --blue-pen: #2f5079;
  --blue-soft: #e5ebf3;
  --yellow: #f2d675;
  --yellow-soft: #fbf1cc;

  --radius: 10px;
  --shadow: 0 1px 0 rgba(29, 43, 54, .04), 0 6px 18px -10px rgba(29, 43, 54, .25);
  --serif: 'Lora', Georgia, 'Times New Roman', serif;
  --sans: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--green); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -.01em; margin: 0; line-height: 1.25; }
::selection { background: var(--yellow); }

.boot { min-height: 100vh; display: grid; place-items: center; color: var(--muted); font-family: var(--serif); font-style: italic; }

/* ---------- Nút & ô nhập ---------- */

.btn {
  display: inline-flex; align-items: center; gap: .45em;
  border: 1px solid var(--rule-strong); background: var(--sheet);
  padding: .5em .95em; border-radius: 8px; cursor: pointer;
  font-weight: 500; font-size: 14px; line-height: 1.3; text-decoration: none; color: var(--ink);
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { background: var(--paper-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-primary { background: var(--green); border-color: var(--green); color: #fbf8f0; }
.btn-primary:hover { background: var(--green-2); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn-ghost:hover { background: rgba(29, 43, 54, .06); }
.btn-sm { font-size: 13px; padding: .35em .7em; }
.btn-danger { color: var(--red-pen); }
.btn-icon { padding: .4em; }

.input, .textarea, .select {
  width: 100%; border: 1px solid var(--rule-strong); background: var(--sheet);
  border-radius: 8px; padding: .6em .8em; outline: none; transition: border-color .15s, box-shadow .15s;
}
.input:focus, .textarea:focus, .select:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(47, 93, 74, .15); }
.label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin: 0 0 .35em; }
.field { margin-bottom: 14px; }
.hint { font-size: 13px; color: var(--muted); }

/* ---------- Bố cục chính ---------- */

.shell { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column;
  padding: 22px 16px; border-right: 1px solid var(--rule); background: var(--paper);
}
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 22px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 30px; height: 34px; flex: none; }
.brand-name { font-family: var(--serif); font-weight: 700; font-size: 18px; line-height: 1.1; }
.brand-sub { font-size: 11px; color: var(--muted); letter-spacing: .02em; }

.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-title { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 14px 10px 6px; }
.nav a {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px;
  text-decoration: none; color: var(--ink-2); font-weight: 500;
}
.nav a svg { width: 18px; height: 18px; opacity: .8; }
.nav a:hover { background: rgba(29, 43, 54, .05); }
.nav a.active { background: var(--sheet); color: var(--ink); box-shadow: inset 3px 0 0 var(--green), var(--shadow); }
.nav .count { margin-left: auto; font-size: 12px; color: var(--muted); }

.me { margin-top: auto; display: flex; align-items: center; gap: 10px; padding: 10px; border-top: 1px dashed var(--rule-strong); }
.me-info { min-width: 0; flex: 1; }
.me-name { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.me-role { font-size: 12px; color: var(--muted); }

.avatar {
  width: 34px; height: 34px; border-radius: 50%; flex: none; object-fit: cover;
  display: grid; place-items: center; font-weight: 600; font-size: 13px;
  background: var(--green-soft); color: var(--green);
}
.avatar.sm { width: 26px; height: 26px; font-size: 11px; }
.avatar.teacher { background: var(--red-soft); color: var(--red-pen); }
.avatar.ai { background: var(--blue-soft); color: var(--blue-pen); }

.main { min-width: 0; padding: 34px 44px 80px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 26px; flex-wrap: wrap; }
.page-head h1 { font-size: 30px; }
.eyebrow { font-size: 13px; color: var(--muted); margin-bottom: 4px; }

.mobile-bar { display: none; }

/* ---------- Thẻ ---------- */

.card { background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-pad { padding: 20px 22px; }
.card h2 { font-size: 19px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.section-title { font-family: var(--serif); font-size: 20px; margin: 34px 0 14px; display: flex; align-items: baseline; gap: 10px; }
.section-title small { font-family: var(--sans); font-size: 13px; color: var(--muted); font-weight: 400; }

/* ---------- Tổng quan ---------- */

.home-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 22px; align-items: start; }

.quote-card {
  position: relative; background: var(--yellow-soft); border: 1px solid #eadca7;
  padding: 30px 30px 24px; border-radius: 4px; box-shadow: 0 10px 22px -16px rgba(80, 60, 10, .45);
  transform: rotate(-.4deg);
  background-image: repeating-linear-gradient(transparent 0 31px, rgba(160, 130, 50, .16) 31px 32px);
  background-position: 0 14px;
}
.quote-card::before {
  content: ''; position: absolute; top: -11px; left: 50%; width: 92px; height: 22px; margin-left: -46px;
  background: rgba(225, 214, 180, .75); border: 1px solid rgba(180, 165, 120, .35); transform: rotate(-2deg);
}
.quote-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; color: #8a7230; }
.quote-text { font-family: var(--serif); font-style: italic; font-size: 22px; line-height: 1.45; margin: 8px 0 12px; color: #3b3220; }
.quote-by { font-size: 14px; color: #7b6a3e; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 22px; }
.stat { padding: 16px 18px; }
.stat-num { font-family: var(--serif); font-size: 30px; font-weight: 600; line-height: 1; }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 6px; }

.list { display: flex; flex-direction: column; }
.list-item {
  display: flex; align-items: center; gap: 14px; padding: 14px 4px; border-bottom: 1px solid var(--rule);
  text-decoration: none; color: inherit;
}
.list-item:last-child { border-bottom: 0; }
.list-item:hover .li-title { color: var(--green); }
.li-title { font-weight: 600; }
.li-meta { font-size: 13px; color: var(--muted); }
.li-body { flex: 1; min-width: 0; }

.meter { height: 6px; border-radius: 3px; background: var(--paper-2); overflow: hidden; }
.meter > span { display: block; height: 100%; background: var(--green); border-radius: 3px; transition: width .4s; }

.empty { text-align: center; padding: 36px 20px; color: var(--muted); }
.empty h3 { color: var(--ink); font-size: 19px; margin-bottom: 6px; }
.empty .btn { margin-top: 14px; }

/* ---------- Danh sách sổ tay (bìa vở) ---------- */

.books { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 22px; }
.book {
  position: relative; display: flex; flex-direction: column; min-height: 250px; padding: 22px 20px 18px 34px;
  border-radius: 4px 12px 12px 4px; text-decoration: none; color: #fbf7ee;
  background: var(--c, var(--green)); box-shadow: 0 14px 24px -16px rgba(0, 0, 0, .5), inset 0 0 0 1px rgba(0, 0, 0, .06);
  transition: transform .2s;
}
.book:hover { transform: translateY(-3px) rotate(-.4deg); }
.book::before { content: ''; position: absolute; inset: 0 auto 0 0; width: 16px; background: rgba(0, 0, 0, .18); border-radius: 4px 0 0 4px; }
.book-label {
  background: #fbf7ee; color: var(--ink); border-radius: 4px; padding: 12px 14px; margin-bottom: auto;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .15);
}
.book-label .t { font-family: var(--serif); font-weight: 600; font-size: 17px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.book-label .f { font-size: 12px; color: var(--muted); margin-top: 6px; }
.book-foot { margin-top: 16px; font-size: 13px; opacity: .92; display: flex; flex-direction: column; gap: 8px; }
.book-foot .meter { background: rgba(255, 255, 255, .25); }
.book-foot .meter > span { background: #fbf7ee; }
.book-new {
  border: 2px dashed var(--rule-strong); background: transparent; color: var(--muted);
  display: grid; place-items: center; text-align: center; box-shadow: none; padding: 20px;
}
.book-new::before { display: none; }
.book-new:hover { color: var(--green); border-color: var(--green); }
.book-new svg { width: 30px; height: 30px; margin-bottom: 8px; }
.book-owner { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; }

/* ---------- Trang sổ tay ---------- */

.nb-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; align-items: start; }

.sheet {
  position: relative; background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px;
  box-shadow: var(--shadow); padding: 34px 40px 40px 76px;
}
.sheet::before { content: ''; position: absolute; top: 0; bottom: 0; left: 52px; width: 2px; background: var(--margin); opacity: .55; }
.sheet-holes { position: absolute; left: 18px; top: 40px; bottom: 40px; display: flex; flex-direction: column; justify-content: space-around; }
.sheet-holes i { display: block; width: 14px; height: 14px; border-radius: 50%; background: var(--paper); box-shadow: inset 0 1px 2px rgba(0, 0, 0, .18); }

.nb-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.back-link { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; color: var(--muted); font-size: 14px; }
.back-link:hover { color: var(--ink); }
.back-link svg { width: 16px; height: 16px; }
.save-state { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
.save-state .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green-2); }
.save-state.saving .dot { background: var(--yellow); }
.save-state.error .dot { background: var(--red-pen); }

.nb-title {
  width: 100%; border: 0; background: transparent; outline: none; resize: none; overflow: hidden;
  font-family: var(--serif); font-size: 30px; font-weight: 600; line-height: 1.25; padding: 0; margin: 0 0 6px;
}
.nb-title::placeholder { color: #c2b9a5; }
.nb-meta { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 26px; }
.nb-field-input { border: 0; border-bottom: 1px dashed var(--rule-strong); background: transparent; outline: none; padding: 2px 0; min-width: 180px; font-size: 13px; color: var(--ink-2); }
.nb-field-input:focus { border-bottom-color: var(--green); }

.sec { position: relative; padding: 18px 0 10px; border-top: 1px solid var(--rule); }
.sec.first { border-top: 0; padding-top: 0; }
.sec-num {
  position: absolute; left: -60px; top: 20px; width: 34px; text-align: right;
  font-family: var(--serif); font-size: 15px; font-weight: 600; color: var(--red-pen); opacity: .8;
}
.sec.first .sec-num { top: 2px; }
.sec-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.sec-title {
  flex: 1; min-width: 0; border: 0; background: transparent; outline: none; padding: 2px 0;
  font-family: var(--serif); font-size: 19px; font-weight: 600; color: var(--ink);
}
.sec-title:focus { box-shadow: 0 1px 0 var(--green); }
.sec-tools { display: flex; gap: 2px; opacity: 0; transition: opacity .15s; }
.sec:hover .sec-tools, .sec:focus-within .sec-tools { opacity: 1; }
.sec-hint { font-size: 13px; color: var(--muted); margin: 0 0 8px; font-style: italic; }

.lined {
  width: 100%; border: 0; outline: none; resize: none; overflow: hidden; background: transparent;
  font-size: 15.5px; line-height: 30px; min-height: 120px; padding: 0 2px; color: var(--ink);
  background-image: repeating-linear-gradient(transparent 0 29px, var(--line) 29px 30px);
  background-attachment: local;
}
.lined::placeholder { color: #b9b19f; }
.lined-read { white-space: pre-wrap; font-size: 15.5px; line-height: 30px; min-height: 60px; background-image: repeating-linear-gradient(transparent 0 29px, var(--line) 29px 30px); }
.lined-read.is-empty { color: #b9b19f; font-style: italic; }

.sec-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.chip-btn {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--rule); background: var(--sheet); cursor: pointer; color: var(--ink-2);
}
.chip-btn svg { width: 14px; height: 14px; }
.chip-btn:hover { border-color: var(--rule-strong); background: var(--paper); }
.chip-btn.has { border-color: #e7b7a8; color: var(--red-pen); background: var(--red-soft); }
.chip-btn.ai:hover { border-color: #b9c7da; color: var(--blue-pen); background: var(--blue-soft); }

/* Bình luận như ghi chú bên lề */
.thread { margin: 12px 0 4px; padding: 14px 16px; border-radius: 8px; background: #fbf8f1; border: 1px solid var(--rule); }
.cmt { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px dashed var(--rule); }
.cmt:first-child { padding-top: 0; }
.cmt:last-of-type { border-bottom: 0; }
.cmt-body { flex: 1; min-width: 0; }
.cmt-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; font-size: 13px; }
.cmt-name { font-weight: 600; }
.cmt-time { color: var(--muted); font-size: 12px; }
.tag { font-size: 11px; font-weight: 600; padding: 1px 7px; border-radius: 999px; background: var(--green-soft); color: var(--green); }
.tag.teacher { background: var(--red-soft); color: var(--red-pen); }
.tag.ai { background: var(--blue-soft); color: var(--blue-pen); }
.cmt-text { white-space: pre-wrap; margin-top: 2px; font-size: 14.5px; }
.cmt.teacher .cmt-text { color: var(--red-pen); font-family: var(--serif); font-size: 15.5px; }
.cmt.resolved .cmt-text { opacity: .55; text-decoration: line-through; text-decoration-color: rgba(0, 0, 0, .25); }
.cmt-ops { display: flex; gap: 4px; margin-top: 4px; }
.cmt-ops button { border: 0; background: none; padding: 0 4px 0 0; font-size: 12px; color: var(--muted); cursor: pointer; }
.cmt-ops button:hover { color: var(--ink); text-decoration: underline; }
.ai-items { list-style: none; margin: 6px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.ai-items li { font-size: 14px; padding-left: 12px; border-left: 3px solid var(--rule-strong); }
.ai-items li[data-t="điểm mạnh"] { border-left-color: var(--green-2); }
.ai-items li[data-t="cần cải thiện"] { border-left-color: #d49a3a; }
.ai-items li[data-t="câu hỏi gợi mở"] { border-left-color: var(--blue-pen); }
.ai-items b { font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); display: block; }
.cmt-form { display: flex; gap: 8px; margin-top: 10px; align-items: flex-end; }
.cmt-form textarea { min-height: 40px; resize: vertical; font-size: 14px; }

/* Thêm mục */
.add-sec { margin-top: 26px; padding: 18px; border: 2px dashed var(--rule-strong); border-radius: 10px; }
.add-sec-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.add-sec-head h3 { font-size: 16px; }
.suggests { display: flex; flex-wrap: wrap; gap: 8px; }
.suggest {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--rule-strong); background: var(--sheet); cursor: pointer; font-size: 13.5px;
}
.suggest svg { width: 14px; height: 14px; color: var(--green); }
.suggest:hover { border-color: var(--green); color: var(--green); }

/* Cột bên phải */
.side { position: sticky; top: 24px; display: flex; flex-direction: column; gap: 16px; }
.side .card-pad { padding: 18px; }
.side h3 { font-size: 16px; margin-bottom: 10px; }
.progress-ring { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.progress-ring svg { width: 64px; height: 64px; flex: none; }
.progress-ring .big { font-family: var(--serif); font-size: 24px; font-weight: 600; line-height: 1; }
.checklist { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; font-size: 13.5px; }
.checklist li { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.checklist li:hover { color: var(--green); }
.check { width: 16px; height: 16px; border-radius: 4px; border: 1.5px solid var(--rule-strong); display: grid; place-items: center; flex: none; }
.check.half { border-color: #d49a3a; background: linear-gradient(135deg, #f4dfb3 50%, transparent 50%); }
.check.done { border-color: var(--green); background: var(--green); }
.check.done svg { width: 11px; height: 11px; color: #fff; }

.person { display: flex; align-items: center; gap: 10px; padding: 6px 0; }
.person .li-body { font-size: 13.5px; }
.person .li-meta { font-size: 12px; }
.inline-form { display: flex; gap: 6px; margin-top: 10px; }
.inline-form .input { padding: .45em .7em; font-size: 14px; }

.journal { list-style: none; margin: 10px 0 0; padding: 0; max-height: 280px; overflow: auto; }
.journal li { position: relative; padding: 0 0 12px 18px; font-size: 13.5px; }
.journal li::before { content: ''; position: absolute; left: 4px; top: 7px; width: 7px; height: 7px; border-radius: 50%; background: var(--green-2); }
.journal li::after { content: ''; position: absolute; left: 7px; top: 16px; bottom: 0; width: 1px; background: var(--rule-strong); }
.journal li:last-child::after { display: none; }
.journal time { display: block; font-size: 12px; color: var(--muted); }
.journal .rm { border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 12px; padding: 0; }
.journal .rm:hover { color: var(--red-pen); }

.readonly-banner {
  display: flex; gap: 10px; align-items: center; padding: 10px 14px; border-radius: 8px; margin-bottom: 18px;
  background: var(--red-soft); color: var(--red-pen); font-size: 14px; border: 1px solid #efcfc3;
}
.readonly-banner svg { width: 18px; height: 18px; flex: none; }

/* ---------- Kĩ năng ---------- */

.skills-top { display: grid; grid-template-columns: 340px 1fr; gap: 22px; align-items: stretch; margin-bottom: 22px; }
.radar { display: grid; place-items: center; padding: 10px; }
.radar svg { width: 100%; max-width: 300px; height: auto; overflow: visible; }
.radar text { font-family: var(--sans); font-size: 11px; fill: var(--ink-2); }
.skills-summary h2 { font-size: 22px; margin-bottom: 6px; }
.skills-summary p { color: var(--ink-2); margin: 0 0 14px; }
.legend { display: flex; flex-wrap: wrap; gap: 10px 18px; font-size: 13px; color: var(--muted); margin-top: 10px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }

.skills { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.skill { padding: 22px; display: flex; flex-direction: column; gap: 12px; }
.skill-head { display: flex; gap: 14px; align-items: flex-start; }
.skill-icon { width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center; flex: none; background: var(--k-soft); color: var(--k); }
.skill-icon svg { width: 22px; height: 22px; }
.skill h3 { font-size: 18px; }
.skill-desc { font-size: 13.5px; color: var(--muted); margin-top: 2px; }
.level-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.level-name { font-weight: 600; font-size: 14px; color: var(--k); }
.pips { display: flex; gap: 5px; }
.pips i { width: 26px; height: 8px; border-radius: 2px; background: var(--paper-2); }
.pips i.on { background: var(--k); }
.stamp {
  display: inline-block; font-family: var(--serif); font-weight: 700; font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--k); border: 2px solid var(--k); padding: 2px 8px; border-radius: 4px; transform: rotate(-4deg); opacity: .85;
}
.evidence { font-size: 13.5px; border-top: 1px dashed var(--rule-strong); padding-top: 10px; }
.evidence-title { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 6px; }
.evidence ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; }
.evidence li { display: flex; align-items: center; gap: 10px; }
.evidence li a { flex: 1; min-width: 0; color: var(--ink); text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.evidence li a:hover { color: var(--k); text-decoration: underline; }
.evidence .meter { width: 80px; flex: none; }
.evidence .meter > span { background: var(--k); }
.next-step { font-size: 13.5px; background: var(--paper); border-radius: 8px; padding: 10px 12px; color: var(--ink-2); }
.next-step b { color: var(--ink); }

.student-picker { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.student-picker button { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px; border-radius: 999px; border: 1px solid var(--rule-strong); background: var(--sheet); cursor: pointer; }
.student-picker button.active { border-color: var(--green); background: var(--green-soft); }

/* ---------- Đăng nhập ---------- */

.auth { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.auth-art {
  position: relative; padding: 48px 56px; display: flex; flex-direction: column; justify-content: space-between;
  background: var(--green); color: #f3eee2; overflow: hidden;
}
.auth-art::after {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: .09;
  background-image: linear-gradient(#fff 1px, transparent 1px), linear-gradient(90deg, #fff 1px, transparent 1px);
  background-size: 28px 28px;
}
.auth-art > * { position: relative; z-index: 1; }
.auth-art .brand { color: #f3eee2; padding: 0; }
.auth-art .brand-sub { color: rgba(243, 238, 226, .7); }
.auth-hero h1 { font-size: 40px; line-height: 1.2; max-width: 520px; color: #fbf8f0; }
.auth-hero h1 em { font-style: italic; color: var(--yellow); font-weight: 500; }
.auth-hero p { max-width: 460px; color: rgba(243, 238, 226, .85); font-size: 16px; margin: 16px 0 0; }
.auth-points { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 28px; max-width: 520px; margin-top: 32px; font-size: 14px; }
.auth-points div { display: flex; gap: 10px; color: rgba(243, 238, 226, .9); }
.auth-points svg { width: 18px; height: 18px; flex: none; margin-top: 2px; color: var(--yellow); }
.auth-quote { font-family: var(--serif); font-style: italic; font-size: 17px; max-width: 460px; border-left: 2px solid var(--yellow); padding-left: 16px; color: rgba(243, 238, 226, .92); }
.auth-quote small { display: block; font-family: var(--sans); font-style: normal; font-size: 13px; margin-top: 6px; opacity: .75; }

.auth-panel { display: grid; place-items: center; padding: 40px 24px; }
.auth-box { width: 100%; max-width: 380px; }
.auth-box h2 { font-size: 26px; margin-bottom: 6px; }
.auth-box > p { color: var(--muted); margin: 0 0 24px; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; margin: 22px 0; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--rule-strong); }
.google-slot { min-height: 44px; display: flex; justify-content: center; }
.notice { font-size: 13px; padding: 10px 12px; border-radius: 8px; background: var(--paper-2); color: var(--ink-2); }
.notice code { font-size: 12px; background: rgba(0, 0, 0, .06); padding: 1px 5px; border-radius: 4px; }

.roles { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 22px 0; }
.role {
  text-align: left; padding: 18px; border-radius: 10px; border: 2px solid var(--rule); background: var(--sheet); cursor: pointer;
  display: flex; flex-direction: column; gap: 8px;
}
.role:hover { border-color: var(--green); }
.role svg { width: 28px; height: 28px; color: var(--green); }
.role b { font-family: var(--serif); font-size: 17px; }
.role span { font-size: 13px; color: var(--muted); }

/* ---------- Modal & toast ---------- */

.modal-back { position: fixed; inset: 0; background: rgba(29, 43, 54, .4); display: grid; place-items: center; padding: 20px; z-index: 50; animation: fade .15s; }
.modal { width: 100%; max-width: 560px; max-height: calc(100vh - 40px); overflow: auto; background: var(--sheet); border-radius: 12px; box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .4); animation: rise .2s; }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px 0; }
.modal-head h2 { font-size: 22px; }
.modal-body { padding: 18px 24px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 0 24px 22px; }
.tpl-list { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; }
.tpl-list label { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; padding: 4px 0; }
.tpl-list input { accent-color: var(--green); width: 16px; height: 16px; }

.quote-modal { max-width: 520px; background: transparent; box-shadow: none; overflow: visible; }
.quote-modal .quote-card { padding: 40px 36px 28px; }
.quote-modal .quote-text { font-size: 25px; }
.quote-modal .btn { margin-top: 18px; }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--ink); color: #f6f1e7; padding: 10px 16px; border-radius: 8px; font-size: 14px; z-index: 60;
  transition: opacity .2s, transform .2s;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

@keyframes fade { from { opacity: 0; } }
@keyframes rise { from { transform: translateY(12px); opacity: 0; } }
.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
  .nb-layout { grid-template-columns: 1fr; }
  .side { position: static; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .skills-top { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .home-grid { grid-template-columns: 1fr; }
  .auth { grid-template-columns: 1fr; }
  .auth-art { padding: 32px 24px; gap: 28px; }
  .auth-hero h1 { font-size: 30px; }
  .auth-points { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .mobile-bar {
    display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 20;
    padding: 10px 16px; background: var(--paper); border-bottom: 1px solid var(--rule);
  }
  .mobile-bar .brand { padding: 0; }
  .mobile-nav {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 20; display: flex; justify-content: space-around;
    background: var(--sheet); border-top: 1px solid var(--rule); padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .mobile-nav a { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 11px; color: var(--muted); text-decoration: none; padding: 4px 10px; }
  .mobile-nav a svg { width: 20px; height: 20px; }
  .mobile-nav a.active { color: var(--green); font-weight: 600; }
  .main { padding: 22px 16px 96px; }
  .page-head h1 { font-size: 24px; }
  .stats { grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
  .stat { padding: 12px; }
  .stat-num { font-size: 24px; }
  .sheet { padding: 24px 18px 28px 40px; }
  .sheet::before { left: 26px; }
  .sheet-holes { display: none; }
  .sec-num { left: -36px; width: 24px; font-size: 13px; }
  .sec-tools { opacity: 1; }
  .nb-title { font-size: 24px; }
  .skills { grid-template-columns: 1fr; }
  .roles, .tpl-list { grid-template-columns: 1fr; }
  .quote-text { font-size: 19px; }
}
@media (min-width: 761px) { .mobile-nav { display: none; } }