/* ===== APP GIÁO VIÊN — Thầy Trung SN =====
   css/app.css — khuôn thị giác riêng của app soạn giáo án (KHÔNG đụng tới app.css của app học sinh).
   Bảng màu thương hiệu: hồng tươi #FF1F8F + vàng gold, nền kem sáng, có chế độ tối. */
:root{
  --red:#FF1F8F; --red-dark:#D6006F; --gold:#E8A100; --gold-light:#FFE7A8;
  --navy:#A4126E; --navy-dark:#7C0A52; --cream:#FFF6FB; --paper:#FFFFFF;
  --ink:#33202C; --muted:#8A6E7E; --green:#12A554; --line:#F6D3E6; --danger:#E0304F;
  --radius:16px; --shadow:0 4px 18px rgba(255,31,143,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:"Segoe UI","Be Vietnam Pro",system-ui,sans-serif;background:var(--cream);color:var(--ink);min-height:100vh;font-size:16px;line-height:1.5}
button,input,select,textarea{font-family:inherit}
h1,h2,h3{font-weight:800}

/* ---------- Header ---------- */
header{position:sticky;top:0;z-index:50;background:linear-gradient(135deg,#FF6AB5 0%,#FF1F8F 55%,#D6006F 100%);color:#fff;box-shadow:0 3px 14px rgba(214,0,111,.35)}
.hd-in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:12px 16px}
.hd-logo{width:50px;height:50px;flex:0 0 50px;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:center;font-size:1.7rem;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.hd-title{flex:1;min-width:0}
.hd-title h1{font-size:1.3rem;letter-spacing:.4px;color:#FFF6C8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-shadow:0 1px 3px rgba(160,0,80,.4)}
.hd-title small{display:block;font-size:.82rem;color:#FFDCEE;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.theme-btn{border:0;background:rgba(255,255,255,.22);border-radius:50%;width:44px;height:44px;flex:0 0 44px;font-size:1.25rem;cursor:pointer;transition:.15s}
.theme-btn:hover{background:rgba(255,255,255,.38)}

/* ---------- Nav (6 tab) ---------- */
nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:74px;z-index:40}
.nav-in{max-width:1180px;margin:0 auto;display:flex;overflow-x:auto}
.nav-in button{flex:1;min-width:110px;border:0;background:none;font:inherit;font-weight:700;font-size:.92rem;color:var(--muted);padding:12px 6px;cursor:pointer;border-bottom:3px solid transparent;transition:.15s;display:flex;flex-direction:column;align-items:center;gap:4px}
.nav-in button .ic{display:flex;justify-content:center;align-items:center;width:38px;height:38px;border-radius:12px;background:color-mix(in srgb, var(--tc,#FF1F8F) 14%, #fff);font-size:1.3rem;transition:.18s}
.nav-in button .lb{white-space:nowrap}
.nav-in button.on{color:var(--tc);border-bottom-color:var(--tc);background:color-mix(in srgb, var(--tc) 6%, #fff)}
.nav-in button.on .ic{background:var(--tc);box-shadow:0 3px 10px color-mix(in srgb, var(--tc) 45%, transparent);transform:translateY(-1px)}

main{max-width:1180px;margin:0 auto;padding:18px 14px 90px;min-height:60vh}

/* ---------- Card / lưới chung ---------- */
.card{background:var(--paper);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px;border:1px solid #F0E0EA}
.card h2{color:var(--navy);font-size:1.28rem;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.card h2::before{content:"";width:6px;height:24px;border-radius:3px;background:linear-gradient(var(--red),var(--gold))}
.grid{display:grid;gap:14px}
.grid.g2{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid.g3{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* ---------- Form ---------- */
label{display:block;font-weight:700;color:var(--navy);font-size:.92rem;margin:0 0 6px}
input[type=text],input[type=number],input[type=date],input[type=search],input:not([type]),select,textarea{
  font:inherit;font-size:1.02rem;padding:11px 13px;border:2px solid var(--line);border-radius:12px;width:100%;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--red)}
textarea{resize:vertical;min-height:44px;line-height:1.6}
.ck{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);cursor:pointer;background:#fff;border:2px solid var(--line);border-radius:12px;padding:10px 14px}
.ck input{width:20px;height:20px;accent-color:var(--red)}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;font:inherit;font-weight:800;cursor:pointer;border-radius:12px;padding:13px 20px;min-height:44px;transition:.15s;text-decoration:none;font-size:1rem}
.btn.sm{padding:9px 14px;min-height:38px;font-size:.88rem}
.btn.red{background:linear-gradient(135deg,var(--red),var(--red-dark));color:#fff;box-shadow:0 3px 10px rgba(214,0,111,.35)}
.btn.navy{background:var(--navy);color:#fff}
.btn.gold{background:linear-gradient(135deg,var(--gold),#C98F12);color:#fff}
.btn.ghost{background:#fff;border:2px solid var(--navy);color:var(--navy)}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

.chip{display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--navy);color:var(--navy);background:#fff;border-radius:999px;padding:8px 16px;font-weight:700;font-size:.88rem;cursor:pointer;transition:.15s;min-height:40px}
.chip.on{background:var(--navy);color:#fff}
.pill{display:inline-block;background:var(--gold-light);color:#7A5A00;font-size:.76rem;font-weight:800;border-radius:999px;padding:3px 12px}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(20px);background:var(--navy);color:#fff;font-weight:700;padding:13px 24px;border-radius:99px;box-shadow:0 6px 24px rgba(0,0,0,.3);z-index:300;opacity:0;transition:.35s;max-width:92vw;text-align:center;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ================= SOẠN GIÁO ÁN ================= */
.stepper{display:flex;align-items:center;gap:4px;margin-bottom:16px;overflow-x:auto;padding:2px}
.stepper .step{flex:0 0 auto;border:2px solid var(--line);background:#fff;color:var(--muted);font-weight:800;font-size:.9rem;border-radius:999px;padding:10px 18px;cursor:pointer;white-space:nowrap;transition:.15s}
.stepper .step.on{border-color:var(--red);color:var(--red);background:#FFF0F7}
.stepper .step.done{border-color:var(--green);color:var(--green)}
.stepper .step-line{flex:1 1 20px;height:2px;background:var(--line);min-width:14px}
.buoc-dieuhuong{justify-content:space-between;margin-top:6px}

/* Chọn môn — lưới chip nhiều màu theo môn */
.mon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:8px}
.mon-chip{display:flex;align-items:center;gap:10px;border:2px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px;cursor:pointer;font:inherit;font-weight:700;color:var(--ink);text-align:left;transition:.15s}
.mon-chip .mc-ic{font-size:1.4rem;width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:color-mix(in srgb, var(--mc,#FF1F8F) 16%, #fff);display:flex;align-items:center;justify-content:center}
.mon-chip:hover{border-color:var(--mc,var(--red));transform:translateY(-1px)}
.mon-chip.on{border-color:var(--mc,var(--red));background:color-mix(in srgb, var(--mc,#FF1F8F) 10%, #fff);box-shadow:0 3px 10px color-mix(in srgb, var(--mc,#FF1F8F) 30%, transparent)}

/* Danh sách dòng thêm/xoá (kiến thức, thiết bị, củng cố…) */
.dong-mang{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.dong-mang input{flex:1}
.xoa{flex:0 0 auto;border:2px solid var(--danger);background:#fff;color:var(--danger);width:38px;height:38px;border-radius:10px;font-weight:800;cursor:pointer;font-size:1rem}
.xoa:hover{background:var(--danger);color:#fff}
.rong{color:var(--muted);font-size:.92rem;padding:8px 0}

/* Tiến trình dạy học — khối hoạt động */
.hd-block{border:2px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:16px;background:#FFFBFD}
.hd-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.hd-ma{flex:0 0 auto;background:var(--navy);color:#fff;font-weight:800;font-size:.85rem;padding:6px 12px;border-radius:999px}
.hd-ten{flex:1;min-width:160px;font-weight:800;color:var(--navy);border-color:var(--navy)}
.hd-phut{width:76px;flex:0 0 76px;text-align:center}
.hd-phut-lb{color:var(--muted);font-weight:700;font-size:.85rem}
.hd-block label{margin-top:10px}
.toChuc-tab{width:100%;border-collapse:collapse;margin-top:6px}
.toChuc-tab th{background:var(--navy);color:#fff;padding:8px 10px;font-size:.85rem;text-align:left}
.toChuc-tab td{border:1px solid var(--line);padding:6px;vertical-align:top}
.toChuc-tab td textarea{border:0;min-height:40px}
.toChuc-tab td:last-child{width:44px;text-align:center}

/* Thanh trạng thái (tổng phút / kiểm tra) */
.status-bar{position:sticky;top:130px;z-index:30;display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:#fff;border:2px solid var(--green);border-radius:14px;padding:12px 16px;margin-bottom:16px;box-shadow:var(--shadow);font-weight:700}
.status-bar.vuot{border-color:var(--danger);background:#FFF1F4;color:var(--danger)}
.status-bar b{font-size:1.05rem}
.luu-luc{margin-left:auto;color:var(--muted);font-weight:600;font-size:.82rem}
.kt-loi,.kt-canh,.kt-ok{border-radius:12px;padding:12px 16px;margin-top:10px}
.kt-loi{background:#FFF1F4;border-left:5px solid var(--danger);color:#7C1730}
.kt-canh{background:#FFF7E8;border-left:5px solid var(--gold);color:#7A5A00}
.kt-ok{background:#EDFBF2;border-left:5px solid var(--green);color:#14532D;font-weight:800;padding:12px 16px;border-radius:12px}
.kt-loi ul,.kt-canh ul{margin:6px 0 0 20px}

/* ---------- Kho của tôi ---------- */
.kho-item small{color:var(--muted);display:block;margin:6px 0}
.kho-tags{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}

/* ---------- CHẾ ĐỘ TỐI ---------- */
html[data-theme="dark"]{
  --cream:#171114; --paper:#231A20; --ink:#F2E7ED; --muted:#B79CA9;
  --line:#4A3340; --gold-light:#6B5320; --shadow:0 4px 18px rgba(0,0,0,.45);
}
html[data-theme="dark"] body{background:var(--cream)}
html[data-theme="dark"] nav{background:#231A20;border-color:#3A2833}
html[data-theme="dark"] .card{border-color:#3A2833}
html[data-theme="dark"] input[type=text],html[data-theme="dark"] input[type=number],
html[data-theme="dark"] input[type=date],html[data-theme="dark"] input[type=search],
html[data-theme="dark"] input:not([type]),html[data-theme="dark"] select,html[data-theme="dark"] textarea{
  background:#2A2027;color:var(--ink);border-color:#4A3340}
html[data-theme="dark"] .stepper .step,html[data-theme="dark"] .chip,html[data-theme="dark"] .ck,html[data-theme="dark"] .mon-chip{background:#2A2027;color:var(--ink);border-color:#4A3340}
html[data-theme="dark"] .hd-block{background:#241C22;border-color:#3A2833}
html[data-theme="dark"] .status-bar{background:#241C22}
html[data-theme="dark"] .toChuc-tab td{border-color:#4A3340}
html[data-theme="dark"] .btn.ghost{background:#231A20}
html[data-theme="dark"] .nav-in button .ic{background:color-mix(in srgb, var(--tc,#FF1F8F) 22%, #231A20)}
html[data-theme="dark"] .kt-ok{background:#15351F;color:#DFF7E7}
html[data-theme="dark"] .kt-canh{background:#2E2410;color:#FFE7A8}
html[data-theme="dark"] .kt-loi{background:#3A1626;color:#FFD1DC}

/* ================= SOẠN NHANH (1 dòng -> trọn bộ) ================= */
.sn-hero{background:linear-gradient(135deg,#FFF6FB,#FFF1E0);border:2px solid var(--gold-light)}
.sn-textarea{width:100%;box-sizing:border-box;min-height:96px;font-size:1.05rem;padding:14px 16px;border:2px solid var(--line);border-radius:14px;resize:vertical;line-height:1.6}
.sn-textarea:focus{outline:none;border-color:var(--red)}
.sn-goiy{margin-top:10px}
.sn-trangthai{color:var(--navy);font-weight:700;font-size:.92rem}
.sn-banner{border:2px solid var(--gold)}
.sn-ul{margin:6px 0 0 20px;font-size:.94rem;line-height:1.7}
.sn-vd-list{margin-top:8px;display:flex;flex-direction:column;gap:6px}
.sn-vd-item{background:#FFF8EE;border:1px solid var(--gold-light);border-radius:10px;padding:6px 10px;font-size:.86rem;color:var(--ink)}
.sn-canduyet{display:inline-block;margin-left:8px;background:var(--danger);color:#fff;font-size:.72rem;font-weight:800;border-radius:999px;padding:2px 9px;vertical-align:middle}
.sn-hinh-thumb{margin-top:10px;border-radius:10px;overflow:hidden;border:1px solid var(--line);max-height:160px;display:flex;align-items:center;justify-content:center;background:#fff}
.sn-hinh-thumb svg{width:100%;height:auto;max-height:160px}
html[data-theme="dark"] .sn-hero{background:linear-gradient(135deg,#2A2027,#241C22);border-color:#4A3340}
html[data-theme="dark"] .sn-vd-item{background:#241C22;border-color:#4A3340}
html[data-theme="dark"] .sn-hinh-thumb{background:#231A20;border-color:#3A2833}

/* ---------- Responsive: điện thoại — nav xuống đáy ---------- */
@media(max-width:640px){
  .hd-title h1{font-size:1.02rem}
  .hd-title small{font-size:.72rem}
  nav{position:fixed;bottom:0;top:auto;left:0;right:0;z-index:60;border-bottom:none;border-top:1px solid var(--line);box-shadow:0 -4px 18px rgba(214,0,111,.15);padding-bottom:env(safe-area-inset-bottom)}
  .nav-in button{flex:1 1 0;min-width:0;padding:6px 1px 5px;font-size:.62rem;border-bottom:none;border-top:3px solid transparent}
  .nav-in button.on{border-top-color:var(--tc,var(--red));border-bottom:none}
  .nav-in button .ic{width:32px;height:32px;border-radius:9px}
  main{padding-bottom:96px}
  .status-bar{position:static}
  .grid.g2,.grid.g3{grid-template-columns:1fr}
  .mon-grid{grid-template-columns:repeat(2,1fr)}
}