/* CANDY IELTS 8.0 · UI layer v1
   Bố cục & ngôn ngữ thiết kế đồng bộ với Dino English (nền sáng thoáng, thẻ trắng viền mảnh,
   ô icon màu, thanh điều hướng nổi), giữ nguyên bảng màu Candy IELTS: plum #4a1259,
   violet #7a1f86, magenta #d6246e, blush #fcebf3. Nạp SAU theme.css và CSS module IELTS. */

/* ---------- Tokens ---------- */
:root{
 --radius:24px;--radius-sm:14px;
 --accent-dark:#b0175a;--accent-shadow:#8f1149;
 --tint:#3a1d44;--tint-ink:#ff8fbd;
 --shadow:0 10px 30px rgba(0,0,0,.22);
 --tile-1-bg:#4a1f55;--tile-1:#ff8fbd;
 --tile-2-bg:#1d3b2c;--tile-2:#6ee7a8;
 --tile-3-bg:#43341c;--tile-3:#f5c46b;
 --tile-4-bg:#4a1f33;--tile-4:#ff9fb4;
 --tile-5-bg:#2f2550;--tile-5:#c4b5fd;
}
:root[data-theme="light"]{
 --bg:#fdf7fb;--bg2:#f8eef6;--panel:#ffffff;--panel2:#faf1f8;--line:#f0dfec;
 --text:#2a1533;--muted:#7a6582;--accent:#d6246e;--accent-ink:#fff;--accent-text:#b0175a;
 --field:#fff;--track:#f3e4f0;--card:#fff;--nav-bg:rgba(255,255,255,.94);
 --tint:#fcebf3;--tint-ink:#b0175a;
 --shadow:0 7px 24px rgba(74,18,89,.06);
 --tile-1-bg:#fcebf3;--tile-1:#c81e64;
 --tile-2-bg:#e9f7ef;--tile-2:#2f8a5f;
 --tile-3-bg:#fff2dd;--tile-3:#b9822d;
 --tile-4-bg:#ffedf0;--tile-4:#e0566f;
 --tile-5-bg:#f1e8fb;--tile-5:#7a1f86;
}
[data-theme="light"] body{background:radial-gradient(ellipse at 80% 0,#fbe3f0 0,transparent 55%),var(--bg);background-attachment:fixed}
body{font-size:15px;line-height:1.55}

/* ---------- Icons ---------- */
.icon{width:20px;height:20px;flex-shrink:0;vertical-align:middle;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tile{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;flex-shrink:0;background:var(--tile-1-bg);color:var(--tile-1)}
.tile .icon{width:21px;height:21px}

/* ---------- Shell & header ---------- */
.app{max-width:1180px;padding:0 32px 120px}
.top{padding:22px 0 20px;margin-bottom:22px;border-bottom:1px solid var(--line);flex-wrap:nowrap;gap:18px}
.brand .logo{width:50px;height:50px;border-radius:15px;box-shadow:0 6px 18px rgba(74,18,89,.14)}
.brand b{font-size:22px;letter-spacing:-.02em}
.brand small{font-size:10px;letter-spacing:1.4px;text-transform:uppercase;margin-top:1px}
.top-controls{gap:10px}
.direction-control{gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:5px 6px 5px 12px;font-size:12px;font-weight:600;color:var(--muted)}
.direction-control .icon{width:17px;height:17px;color:var(--accent-text)}
.top-controls .select,.direction-control .select{border:0;background:transparent;padding:6px 4px;border-radius:9px;font-weight:700;color:var(--text);max-width:150px;cursor:pointer}
.direction-control:focus-within{border-color:var(--accent)}
.user{gap:10px;flex-shrink:0}
.user-chip{display:flex;align-items:center;gap:10px}
.user-greeting{font-size:12px;color:var(--muted);text-align:right;line-height:1.35}
.user-greeting b{display:block;color:var(--text);font-size:13px;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--tint);color:var(--tint-ink);font-family:var(--font-display);font-weight:700;font-size:16px;border:3px solid var(--panel);box-shadow:0 0 0 1px var(--line)}
.icon-btn{display:grid;place-items:center;width:42px;height:42px;padding:0;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--muted);text-decoration:none}
.icon-btn:hover{color:var(--accent-text);border-color:var(--accent)}
.icon-btn .icon{width:19px;height:19px}
.icon-btn.hidden{display:none!important}
#cloudStatus{font-size:12px;margin:-8px 0 14px}
#cloudStatus:empty{display:none}
.pwa-tools{margin:-10px 0 12px}
.pwa-tools small{font-size:12px}
.pwa-tools:has(button[hidden]):has(small:empty){display:none}

/* ---------- Cards & buttons ---------- */
.card{border-radius:var(--radius);box-shadow:var(--shadow)}
button{border-radius:12px;font-weight:700;transition:transform .15s,filter .15s,background .15s}
.primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:var(--accent-ink);box-shadow:0 4px 0 var(--accent-shadow)}
.primary:hover:not(:disabled){transform:translateY(-1px);filter:none;background:#c81e64}
.primary:active:not(:disabled){transform:translateY(2px);box-shadow:0 2px 0 var(--accent-shadow)}
.primary .icon{width:18px;height:18px}
.secondary{background:var(--panel);border:1px solid var(--line)}
.secondary:hover:not(:disabled){border-color:var(--accent);transform:translateY(-1px)}
button:focus-visible,a:focus-visible,.logo:focus-visible{outline:3px solid #e36aa0;outline-offset:3px}
.eyebrow{font-size:11px;letter-spacing:1.5px;font-weight:800}

/* ---------- Home: hero ---------- */
.grid{grid-template-columns:1.85fr 1fr;gap:20px}
.card.hero:not(.folder):not(.lesson):not(.level){position:relative;overflow:hidden;display:flex;align-items:center;min-height:300px;padding:30px 32px;box-shadow:none}
[data-theme="light"] .card.hero:not(.folder):not(.lesson):not(.level){background:linear-gradient(118deg,#fde8f2 0%,#f8e4f8 58%,#efd6f7 100%);border-color:#f1d1e6;color:var(--text)}
[data-theme="light"] .card.hero h1{color:var(--text)}
.hero::before{content:'';position:absolute;width:250px;height:250px;border-radius:50%;background:rgba(255,255,255,.35);right:-30px;top:-60px;pointer-events:none}
[data-theme="dark"] .hero::before{background:rgba(255,255,255,.05)}
.hero-content{position:relative;z-index:1;max-width:66%}
.hero h1{font-size:34px;line-height:1.25;margin:14px 0 6px}
.hero-sub{margin:0 0 4px;font-size:14px;color:var(--muted)}
.hero-sub em{font-style:normal;font-weight:700;color:var(--accent-text)}
[data-theme="dark"] .hero-sub{color:#e3cde8}
.hero-label{display:inline-flex;align-items:center;gap:7px;border:1px solid rgba(255,255,255,.6);background:rgba(255,255,255,.55);border-radius:99px;padding:6px 12px;letter-spacing:.6px;color:var(--accent-text)}
.hero-label .icon{width:15px;height:15px}
[data-theme="dark"] .hero-label{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14)}
[data-theme="light"] .card.hero .eyebrow{color:var(--accent-text)}
.hero-mark{position:absolute;right:28px;bottom:50%;transform:translateY(50%) rotate(-8deg);width:190px;height:auto;pointer-events:none;filter:drop-shadow(0 18px 28px rgba(122,31,134,.25))}
.today{gap:12px;margin:20px 0 22px;flex-wrap:wrap}
.today .pill{display:flex;align-items:center;gap:11px;padding:10px 16px 10px 10px;border-radius:16px}
[data-theme="light"] .card.hero .pill{background:rgba(255,255,255,.75);border-color:rgba(255,255,255,.9);color:var(--text)}
[data-theme="dark"] .card.hero .pill{background:rgba(0,0,0,.18)}
.today .pill .tile{width:36px;height:36px;border-radius:11px}
.today .pill:nth-child(2) .tile{background:var(--tile-3-bg);color:var(--tile-3)}
.today .pill b{font-size:20px;line-height:1.15}
.today .pill small{font-size:11px;color:var(--muted)}
[data-theme="dark"] .card.hero .pill small{color:#e3cde8}

/* ---------- Home: settings panel ---------- */
.side{padding:24px}
.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px}
.panel-heading h3{margin:0;font-size:18px}
.panel-heading .icon{color:var(--accent-text)}
.setting{padding:14px 0}
.setting b{font-size:13px}
.theme-toggle{min-height:40px;padding:8px 14px}

/* ---------- Home: stats ---------- */
.stats{gap:16px;margin:20px 0 26px}
.stat{display:flex;align-items:center;gap:13px;padding:18px 20px}
.stat b{font-size:24px;line-height:1.2;display:block}
.stat span:not(.tile){font-size:12px;margin-top:2px}
.stat:nth-child(2) .tile{background:var(--tile-2-bg);color:var(--tile-2)}
.stat:nth-child(3) .tile{background:var(--tile-3-bg);color:var(--tile-3)}
.stat:nth-child(4) .tile{background:var(--tile-4-bg);color:var(--tile-4)}

/* ---------- Section cards ---------- */
.form-card{padding:24px}
.form-card h2{display:flex;align-items:center;gap:12px;font-size:19px}
.form-card h2 .tile{width:38px;height:38px;border-radius:12px}
.form-card input,.form-card textarea,.search,.select,.login input{border-radius:12px}
.section h2{font-size:21px}
.tabs button{border-radius:11px}

/* ---------- Library: folder & lesson cards (Dino unit-card style) ---------- */
.folder,.lesson,.level{--c:var(--tile-5);--c-bg:var(--tile-5-bg)}
.folder-a1,.lesson-a1,.level-a1{--c:#7a1f86;--c-bg:#f1e5f6}
.folder-a2,.lesson-a2,.level-a2{--c:#c81e64;--c-bg:#fcebf3}
.folder-b1,.lesson-b1,.level-b1{--c:#b95a1d;--c-bg:#fff0e3}
.folder-b2,.lesson-b2,.level-b2{--c:#4a1259;--c-bg:#efe3f3}
.folder-irregular,.lesson-irregular{--c:#5b47c4;--c-bg:#eeebfc}
.folder-grammar,.lesson-grammar_pronouns,.lesson-grammar_nouns,.lesson-grammar_quantifiers,.lesson-grammar_subjects,.lesson-grammar_adjectives_adverbs,.lesson-grammar_passive_voice,.lesson-grammar_verb_complements{--c:#3d2f8f;--c-bg:#ebe8f8}
.folder-advanced,.lesson-advanced{--c:#d6246e;--c-bg:#fde6f0}
.folder-cambridge,.lesson-cambridge{--c:#0f7f73;--c-bg:#e1f5f2}
[data-theme="dark"] .folder,[data-theme="dark"] .lesson,[data-theme="dark"] .level{--c-bg:rgba(255,255,255,.08)}
[data-theme="dark"] .folder-a1,[data-theme="dark"] .lesson-a1{--c:#e3a3ec}
[data-theme="dark"] .folder-a2,[data-theme="dark"] .lesson-a2{--c:#ff8fbd}
[data-theme="dark"] .folder-b1,[data-theme="dark"] .lesson-b1{--c:#f6b48f}
[data-theme="dark"] .folder-b2,[data-theme="dark"] .lesson-b2{--c:#c9a3d6}
[data-theme="dark"] .folder-irregular,[data-theme="dark"] .lesson-irregular,[data-theme="dark"] .folder-grammar,[data-theme="dark"] [class*="lesson-grammar"]{--c:#c4b5fd}
[data-theme="dark"] .folder-advanced,[data-theme="dark"] .lesson-advanced{--c:#ff8fbd}
[data-theme="dark"] .folder-cambridge,[data-theme="dark"] .lesson-cambridge{--c:#5eead4}
.card.folder,.card.lesson,.card.level,[data-theme="light"] .card.folder,[data-theme="light"] .card.lesson,[data-theme="light"] .card.level{background:var(--card);border:1px solid var(--line);color:var(--text);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card.folder:hover,.card.lesson:hover{transform:translateY(-3px);border-color:var(--c)}
.card.folder:focus-visible,.card.lesson:focus-visible,[data-theme="light"] .folder:focus-visible,[data-theme="light"] .lesson:focus-visible{outline:3px solid var(--c);outline-offset:3px}
.folder{padding:20px;min-height:150px}
.folder b,.lesson b{display:block;font-family:var(--font-display);font-size:15px;letter-spacing:-.01em}
.folder small,.lesson small{color:var(--muted)!important;font-size:11px;font-weight:500}
.folder-icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:23px;margin-bottom:14px;background:var(--c-bg)}
.folder .progress,.lesson .progress,.level .progress,[data-theme="light"] .folder .progress,[data-theme="light"] .lesson .progress{background:var(--track);height:6px;margin:12px 0 7px}
.folder .progress>i,.lesson .progress>i,.level .progress>i{background:var(--c)}
.lesson{padding:16px;border-left:4px solid var(--c)!important}
.lesson.locked{opacity:.5}
.lesson-heading{font-size:16px}

/* ---------- Study ---------- */
.flash{border-radius:var(--radius);position:relative;overflow:hidden}
.flash::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 0,var(--tint) 0,transparent 70%);pointer-events:none;opacity:.8}
.flash>*{position:relative}
.badge{background:var(--tint);color:var(--tint-ink);font-weight:700;letter-spacing:.3px}
.word{font-weight:700;letter-spacing:-.02em}
.bar{height:6px}
.remember-btn,.review-btn{border-radius:12px;padding:13px 12px}
[data-theme="light"] .remember-btn,.remember-btn{background:#e6f8f2;color:#21805d;border:1px solid #c9ede0}
[data-theme="light"] .review-btn,.review-btn{background:#fff3ea;color:#b4561f;border:1px solid #f6dcc8}
[data-theme="dark"] .remember-btn{background:#173b2e;color:#9ff0c8;border-color:#2c5d48}
[data-theme="dark"] .review-btn{background:#41281b;color:#ffd0b0;border-color:#6a412b}
.summary .big{font-size:52px}

/* ---------- Floating bottom navigation ---------- */
.nav,.nav.hidden{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);margin:0;z-index:40;flex-wrap:nowrap;gap:4px;padding:7px;border-radius:20px;background:var(--nav-bg);border:1px solid var(--line);box-shadow:0 8px 36px rgba(74,18,89,.16);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.nav.hidden{display:none!important}
.nav button{display:flex;align-items:center;gap:8px;padding:10px 17px;border-radius:13px;font-size:13px;font-weight:600;color:var(--muted);background:transparent;border:0;white-space:nowrap;box-shadow:none}
.nav button .icon{width:18px;height:18px}
.nav button:hover:not(.active){background:var(--tint);color:var(--text);transform:none}
.nav button.active{background:var(--tint);color:var(--accent-text);border:0}
.nav button[hidden]{display:none}
.toast{bottom:96px}

/* ---------- Responsive ---------- */
@media(max-width:1000px){
 .app{padding:0 22px 120px}
 .user-greeting{display:none}
 .hero-mark{width:150px;right:12px}
 .hero-content{max-width:72%}
 .stat{padding:15px 14px;gap:10px}
 .stat .tile{width:36px;height:36px}
}
@media(max-width:860px){
 .top{flex-wrap:wrap}
 .top-controls{order:3;width:100%;margin-left:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
 .direction-control{width:100%;justify-content:flex-start;flex-direction:row;align-items:center}
 .direction-control .select{flex:1;max-width:none;width:auto}
 .user{margin-left:auto}
}
@media(max-width:760px){
 .app{padding:0 16px 112px}
 .top{padding:14px 0 14px;margin-bottom:16px;gap:12px;align-items:center}
 .brand{flex:1;min-width:0}
 .brand .logo{width:44px;height:44px}
 .brand b{font-size:19px}
 .brand small{display:none}
 .ctl-label{display:none}
 .direction-control{padding:3px 4px 3px 10px}
 .direction-control .select{font-size:13px}
 .user .avatar{display:grid;width:38px;height:38px;font-size:15px}
 .icon-btn{width:38px;height:38px}
 .grid{grid-template-columns:1fr}
 .card.hero:not(.folder):not(.lesson):not(.level){min-height:0;padding:24px 22px}
 .hero-content{max-width:100%}
 .hero h1{font-size:27px;padding-right:84px}
 .hero-mark{width:96px;right:14px;top:22px;bottom:auto;transform:rotate(-8deg)}
 .hero-sub{font-size:13px}
 .today{margin:16px 0 18px}
 .today .pill{flex:1;min-width:130px}
 .side{padding:20px}
 .stats{grid-template-columns:repeat(2,1fr);gap:10px;margin:14px 0 20px}
 .stat{padding:14px}
 .stat b{font-size:21px}
 .folder{padding:16px;min-height:0}
 .folder-icon{width:40px;height:40px;font-size:20px;margin-bottom:10px}
 .nav,.nav.hidden{width:calc(100% - 20px);max-width:560px;bottom:10px;justify-content:space-around;gap:0;padding:6px}
 .nav button{flex-direction:column;gap:3px;padding:8px 4px;font-size:10px;min-width:0;flex:1}
 .nav button .icon{width:20px;height:20px}
 .toast{bottom:88px;left:16px;right:16px}
}
@media(max-width:400px){
 .app{padding:0 12px 108px}
 .brand b{font-size:17px}
 .hero h1{font-size:24px}
 .stat .tile{width:32px;height:32px}
 .stat .tile .icon{width:18px;height:18px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- Fixes after review ---------- */
.stat .tile{display:grid;margin-top:0}
.side{display:flex;flex-direction:column}
.goal{margin-top:auto;display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--line);border-radius:13px;padding:11px 13px;font-size:12px;color:var(--muted)}
.goal b{color:var(--accent-text)}
.goal .icon{color:#d9a240;width:18px;height:18px}
[data-theme="dark"] .goal{background:rgba(0,0,0,.18)}
[data-theme="dark"] .hero-mark{filter:drop-shadow(0 0 1.5px rgba(255,255,255,.9)) drop-shadow(0 12px 30px rgba(255,143,189,.35))}
@media(max-width:760px){
 .setting{flex-direction:row;align-items:center}
 .setting .select{width:auto}
 .goal{margin-top:8px}
}
/* IELTS: giữ thanh điều hướng nổi giống các trang khác */
.ielts-active .nav{bottom:18px;width:auto;padding:7px;border-radius:20px;border:1px solid var(--line);background:var(--nav-bg)}
@media(max-width:760px){.ielts-active .nav{bottom:10px;width:calc(100% - 20px);padding:6px}}
button.user-chip{border:0;background:transparent;color:var(--text);padding:5px;cursor:pointer;border-radius:14px;text-align:left}
.profile-page{max-width:840px;margin:0 auto 32px}.profile-heading{margin-bottom:24px}.profile-heading h1{margin:8px 0;font-size:32px}
.profile-card{padding:28px}.profile-card h2{margin-top:0}.profile-card fieldset{border:0;padding:0;margin:24px 0}
.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.profile-field{display:flex;flex-direction:column;gap:8px;min-width:0}
.profile-field label{font-weight:700}.profile-field input,.profile-field select{width:100%;box-sizing:border-box;min-height:48px;border:1px solid var(--line);background:var(--field);color:var(--text);border-radius:12px;padding:11px 13px;font:inherit}
.profile-field input[readonly]{background:var(--panel2);color:var(--muted)}.profile-field [aria-invalid=true]{border-color:#c93857}.profile-error,.profile-card .bad{color:var(--bad,#e05b70)}
.profile-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.profile-actions button{min-height:44px}
.profile-page :focus-visible,#profileButton:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:600px){.profile-grid{grid-template-columns:1fr}.profile-card{padding:20px}.profile-heading h1{font-size:27px}.profile-actions button{flex:1 1 auto}}

.password-input-wrap{position:relative}.password-input-wrap #passwordInput{padding-right:72px}.password-toggle{position:absolute;right:8px;top:50%;transform:translateY(-50%);min-height:36px;padding:6px 10px;border:0;border-radius:8px;background:var(--panel2);color:var(--text);cursor:pointer;font:inherit;font-weight:600}.password-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}#cloudStatus:empty,#pwaStatus:empty{display:none}

/* Keep the visibility control outside the input; override .login button width. */
.login .password-input-wrap{display:flex;align-items:center;gap:8px;margin:7px 0 14px}.login .password-input-wrap #passwordInput{flex:1;min-width:0;width:0;margin:0;padding:13px;box-sizing:border-box}.login #togglePassword{position:static;transform:none;flex:0 0 44px;width:44px;min-height:40px;padding:6px 4px;font-size:12px}.profile-required-note{padding:14px;border-radius:12px;background:var(--tint);color:var(--tint-ink)}

/* ---------- Chờ duyệt tài khoản ---------- */
.pending-page{max-width:560px;margin:4vh auto 32px}
.pending-card{padding:34px 30px;text-align:center}
.pending-mark{width:84px;height:auto;margin:0 auto 14px;display:block;filter:drop-shadow(0 10px 18px rgba(122,31,134,.22))}
.pending-card h1{font-size:27px;margin:8px 0 10px}
.pending-card .deck-actions{justify-content:center;margin-top:18px}
.pending-help{font-size:13px;color:var(--muted);margin-top:18px}
.pending-help a{color:var(--accent-text);font-weight:700}