@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@500;600;700;800&family=Poppins:wght@400;500;600;700;800&display=swap');
:root{--pink:#f12683;--pink2:#ff3d91;--teal:#1fa6ad;--blue:#285474;--navy:#08182e;--ink:#10233b;--muted:#5b6b7f;--soft:#f5f7fa;--line:#e3e8ef;--orange:#ff7a18}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Poppins,Arial,sans-serif;color:var(--ink);background:#fff}a{text-decoration:none;color:inherit}.container{width:min(1160px,calc(100% - 36px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(8,24,46,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}.nav{height:78px;display:flex;align-items:center;gap:28px}.brand img{width:205px;height:auto;display:block}.nav nav{display:flex;gap:22px;margin-left:auto}.nav nav a{color:#fff;font-weight:700;font-size:.95rem}.nav nav a:hover{color:#ff6ba7}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:13px 20px;font-weight:800;border:2px solid transparent;transition:.2s}.btn-primary{background:linear-gradient(135deg,var(--pink),var(--teal));color:#fff}.btn-outline{border-color:#fff;color:#fff}.btn-light{background:#fff;color:var(--navy)}.btn-small{padding:9px 15px;background:#fff;color:var(--navy);margin-left:8px}
.hero{background:linear-gradient(120deg,#071a31 0%,#0b2945 55%,#172c49 100%);color:#fff;padding:92px 0 100px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(241,38,131,.28),transparent 65%);right:-160px;top:-160px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center;position:relative;z-index:1}.eyebrow{font-size:.75rem;letter-spacing:.14em;font-weight:800;color:var(--pink);display:inline-block;margin-bottom:12px}.hero .eyebrow{color:#6ee7eb}.hero h1{font-family:"Barlow Condensed",sans-serif;font-size:clamp(3.4rem,7vw,6rem);line-height:.92;margin:0 0 24px;letter-spacing:-.03em}.hero h1 span{color:#ff4c99}.hero p{font-size:1.12rem;line-height:1.75;color:#dce8f4;max-width:650px}.actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:28px;padding:42px;box-shadow:0 30px 80px rgba(0,0,0,.2)}.math{font-family:"Barlow Condensed";font-size:3rem;color:#fff}.math.small{font-size:2.2rem;color:#ff63a7;margin-top:18px}.math.teal{font-size:1.7rem;color:#68e0e3;margin-top:18px}.hero-card p{font-size:.98rem;margin-top:30px}
.section{padding:82px 0}.section-soft{background:var(--soft)}.section-title{text-align:center;margin-bottom:38px}.section-title h2{font-family:"Barlow Condensed";font-size:3rem;margin:0 0 8px;color:var(--navy)}.section-title p{color:var(--muted);margin:0}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.card{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 14px 35px rgba(10,31,54,.06)}.course-card img{width:100%;height:180px;object-fit:cover}.card-body{padding:25px}.tag{display:inline-block;background:#fff0f6;color:#d91669;padding:5px 9px;border-radius:999px;font-size:.72rem;font-weight:800}.card h3{font-size:1.35rem;margin:12px 0 8px}.card p{color:var(--muted);line-height:1.65;min-height:54px}.price{display:block;font-size:1.3rem;color:var(--blue);margin:16px 0}.text-link{font-weight:800;color:var(--pink)}.empty{padding:30px;border:1px dashed #cdd6e0;border-radius:16px;color:var(--muted);grid-column:1/-1;text-align:center}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature{background:#fff;border-radius:18px;padding:28px;border:1px solid var(--line)}.feature b{display:block;font-size:1.1rem;margin-bottom:8px}.feature span{color:var(--muted);line-height:1.6}.center{text-align:center;margin-top:28px}
.teacher{text-align:center;padding:15px}.teacher-photo{width:170px;height:170px;border-radius:50%;overflow:hidden;margin:0 auto 18px;background:linear-gradient(135deg,#f5d7e5,#d6f3f4);display:grid;place-items:center}.teacher-photo img{width:100%;height:100%;object-fit:cover}.avatar{font-size:4rem;font-weight:800;color:var(--pink)}.teacher h3{margin:0 0 4px}.teacher span{color:var(--muted)}
.cta{padding:55px 0;background:linear-gradient(135deg,var(--pink),#cf1e72 55%,var(--teal));color:#fff}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-family:"Barlow Condensed";font-size:3rem;margin:0}
.footer{background:#07172b;color:#dce8f4;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}.footer-logo{width:190px;background:#fff;border-radius:10px;padding:8px}.footer-grid b{display:block;color:#fff;margin-bottom:14px}.footer-grid a{display:block;margin:8px 0;color:#b9c7d7}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:35px;padding-top:18px;text-align:center;font-size:.8rem;color:#91a2b6}
.admin-body{background:#f4f6f9}.admin-shell{min-height:100vh}.admin-top{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px}.admin-top img{width:160px}.admin-main{width:min(1180px,calc(100% - 40px));margin:30px auto}.admin-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}.admin-nav a{background:#fff;border:1px solid var(--line);padding:10px 14px;border-radius:10px;font-weight:700}.admin-nav a:hover{border-color:var(--pink);color:var(--pink)}.admin-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.admin-title h1{font-family:"Barlow Condensed";font-size:3rem;margin:0}.admin-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 10px 30px rgba(10,31,54,.05)}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:13px;border-bottom:1px solid var(--line);vertical-align:top}.table th{font-size:.8rem;text-transform:uppercase;color:var(--muted)}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:700}.field input,.field textarea,.field select{font:inherit;border:1px solid #ccd5df;border-radius:10px;padding:11px 12px;background:#fff}.field textarea{min-height:150px;resize:vertical}.form-actions{margin-top:22px;display:flex;gap:10px}.alert{padding:13px 16px;border-radius:10px;margin-bottom:18px;background:#ecfeff;color:#155e75}.danger{background:#fff1f2;color:#9f1239}.login{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#07182c,#12344c)}.login-card{width:min(440px,calc(100% - 32px));background:#fff;padding:36px;border-radius:24px}.login-card img{width:220px;display:block;margin:0 auto 25px}
.question-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.question-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.question-card h3{margin-top:0}.question-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.question-meta span{font-size:.72rem;font-weight:800;padding:5px 8px;background:#eef8f8;color:#14666b;border-radius:999px}.answer{display:block;border:1px solid var(--line);padding:12px 14px;border-radius:10px;margin:9px 0;cursor:pointer}.answer:hover{border-color:var(--teal);background:#f3ffff}.result{padding:15px;border-radius:12px;margin-top:14px}.correct{background:#ecfdf5;color:#166534}.wrong{background:#fff1f2;color:#9f1239}
.prose{max-width:800px;margin:auto;line-height:1.8}.prose h1{font-family:"Barlow Condensed";font-size:3.5rem}.prose img{max-width:100%}
@media(max-width:850px){.hero-grid,.grid-3,.grid-4,.feature-grid,.question-list,.footer-grid{grid-template-columns:1fr}.nav nav{display:none}.hero{padding:65px 0}.cta-inner{flex-direction:column;align-items:flex-start}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}}

/* Estados vazios e páginas de erro — identidade Elementar */
.empty-state{position:relative;overflow:hidden;max-width:760px;margin:10px auto 0;padding:64px 34px;text-align:center;background:linear-gradient(145deg,#ffffff 0%,#f7fbfc 100%);border:1px solid var(--line);border-radius:28px;box-shadow:0 20px 55px rgba(10,31,54,.08)}
.empty-state:before,.empty-state:after{content:"";position:absolute;border-radius:50%;pointer-events:none}.empty-state:before{width:260px;height:260px;left:-150px;bottom:-150px;background:radial-gradient(circle,rgba(31,166,173,.18),transparent 68%)}.empty-state:after{width:300px;height:300px;right:-170px;top:-170px;background:radial-gradient(circle,rgba(241,38,131,.16),transparent 68%)}
.empty-math{position:relative;z-index:1;font-family:"Barlow Condensed",sans-serif;font-size:clamp(4rem,10vw,7rem);font-weight:800;line-height:.9;letter-spacing:-.04em;background:linear-gradient(135deg,var(--pink),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:18px}
.empty-label{position:relative;z-index:1;display:inline-block;color:var(--teal);font-size:.72rem;font-weight:800;letter-spacing:.16em;margin-bottom:10px}.empty-state h3{position:relative;z-index:1;margin:0 0 10px;font-family:"Barlow Condensed",sans-serif;font-size:2.5rem;color:var(--navy)}.empty-state p{position:relative;z-index:1;max-width:570px;margin:0 auto 25px;color:var(--muted);line-height:1.75}.empty-state .btn{position:relative;z-index:1}.empty-state-error .empty-math{font-size:clamp(4rem,9vw,6rem)}.center-actions{justify-content:center;margin-top:22px}.btn-secondary{background:#fff;border:2px solid var(--line);color:var(--navy)}.btn-secondary:hover{border-color:var(--teal);color:var(--teal)}
@media(max-width:600px){.empty-state{padding:50px 22px}.empty-state h3{font-size:2.1rem}.center-actions{align-items:stretch;flex-direction:column}.center-actions .btn{width:100%}}

/* Banco de questões V2 — filtros leves na identidade Elementar */
.question-filters{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:0 16px 45px rgba(10,31,54,.06);max-width:1100px;margin:0 auto}
.question-filters-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.question-filters-more{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:16px;padding-top:16px;border-top:1px solid #eef2f6}
.filter-field{display:flex;flex-direction:column;gap:7px}.filter-field label{font-size:.78rem;font-weight:800;color:var(--navy);letter-spacing:.01em}.filter-field select,.filter-field input{width:100%;font:inherit;color:var(--ink);background:#fbfcfe;border:1px solid #dfe6ed;border-radius:13px;padding:13px 14px;outline:none;transition:.18s}.filter-field select:focus,.filter-field input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(31,166,173,.10);background:#fff}.filter-field input::placeholder{color:#9aa8b7}
.question-filter-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid #eef2f6}.question-filter-actions .btn-secondary{background:#fff;border:1px solid var(--line);color:var(--muted)}.question-filter-actions .btn-secondary:hover{border-color:var(--pink);color:var(--pink)}
.question-results-head{max-width:1100px;margin:24px auto 14px;color:var(--muted);font-size:.9rem}.question-results-head strong{color:var(--navy)}
.question-topic{display:inline-block;color:var(--blue);font-weight:700;margin:0 0 16px}.page-question-meta{margin-bottom:10px}.question-image{display:block;max-width:100%;height:auto;margin:25px auto;border-radius:14px;border:1px solid var(--line)}
.check-label{display:flex!important;flex-direction:row!important;align-items:center;gap:8px}.check-label input{width:auto}
@media(max-width:850px){.question-filters-grid,.question-filters-more{grid-template-columns:1fr}.question-filter-actions{justify-content:stretch;flex-direction:column}.question-filter-actions .btn{width:100%}}

/* Banco de questões — digitação em lote */
.admin-title-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.lote-editor{padding:28px}
.lote-help{margin-bottom:18px;color:var(--muted,#667085)}
.lote-help pre{white-space:pre-wrap;background:#f7f9fb;border:1px solid var(--line,#e5e7eb);border-radius:14px;padding:18px;line-height:1.55;font-family:monospace;font-size:13px;color:var(--ink,#08182e);overflow:auto}
.lote-textarea{width:100%;min-height:520px;border:1px solid var(--line,#e5e7eb);border-radius:16px;padding:20px;font:500 15px/1.65 Poppins,Arial,sans-serif;resize:vertical;background:#fff;color:var(--ink,#08182e)}
.lote-textarea:focus{outline:none;border-color:#f12683;box-shadow:0 0 0 4px rgba(241,38,131,.08)}
.lote-summary{margin:0 0 18px;padding:14px 18px;border-radius:12px;background:#eef9fa;color:#285474}
.lote-preview{margin-bottom:18px;padding:24px;border-radius:18px}
.lote-invalid{border:1px solid #f1b4bd}
.lote-preview-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}
.lote-number{font-weight:800;color:#285474;font-size:17px}
.lote-ok,.lote-error{font-size:13px;font-weight:700;padding:6px 10px;border-radius:999px}
.lote-ok{background:#e8f7f5;color:#187f83}.lote-error{background:#fff0f2;color:#c62b43}
.lote-preview h3{font-size:14px;color:#285474;margin:18px 0 8px}.lote-content{line-height:1.7;color:#25364a}.lote-alts{display:grid;gap:9px;line-height:1.6}.lote-footer{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px;padding-top:14px;border-top:1px solid var(--line,#e5e7eb);font-size:13px;color:#667085}
.lote-final-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:22px 0}.lote-final-actions form{margin:0}
.question-command{margin-top:18px;padding:14px 16px;border-left:4px solid #f12683;background:#fff7fb;border-radius:0 10px 10px 0}
@media(max-width:700px){.admin-title-actions{width:100%}.admin-title-actions .btn{width:100%;text-align:center}.lote-editor{padding:18px}.lote-textarea{min-height:420px}}