@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--bg:#f4f7f8;--surface:#fff;--text:#17242d;--muted:#6c7a83;--line:#e2e9ec;--primary:#11a7b5;--green:#35c98a;--shadow:0 12px 32px #16303d0d;--nav:#10212b}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:'DM Sans',sans-serif;line-height:1.5}body[data-theme="dark"]{--bg:#0d171e;--surface:#15242d;--text:#edf5f6;--muted:#a1b1b9;--line:#2b3d46;--shadow:0 12px 32px #0003;--nav:#09131a}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a{transition:all .18s ease}.topbar{min-height:76px;padding:14px max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;gap:28px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:9px;font:800 22px Manrope,sans-serif;white-space:nowrap}.accent{color:var(--primary)}.mark{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,#1aa9cf,#38d18d);color:white;font-weight:800;font-size:17px;box-shadow:0 5px 14px #12a8b52a}.brand-logo{height:38px;width:auto;display:inline-block}.logo-dark{display:none}body[data-theme="dark"] .logo-dark{display:inline-block}body[data-theme="dark"] .logo-light{display:none}.mark.large{width:58px;height:58px;font-size:26px;border-radius:18px}.topbar nav{display:flex;align-items:center;gap:18px;margin-left:auto}.topbar nav a{font-size:13px;color:var(--muted);font-weight:600}.topbar nav a:hover,.text-link{color:var(--primary)}.actions{display:flex;align-items:center;gap:9px}.icon-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:11px;width:38px;height:38px;cursor:pointer}.user-pill,.tag{font-size:12px;padding:7px 10px;border-radius:999px;background:#e7f8f5;color:#168d8a;font-weight:700;white-space:nowrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:10px 15px;font-size:13px;font-weight:700;cursor:pointer}.btn-primary{color:white;background:linear-gradient(110deg,#159bc6,#2fc78d);box-shadow:0 7px 16px #18b7a31b}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 9px 20px #18b7a333}.btn-dark{background:var(--nav);color:#fff}.btn-soft{background:#e8f8f5;color:#178f8c}.btn-outline{border-color:var(--line);background:var(--surface)}.btn-lg{padding:14px 19px}.full{width:100%;margin-top:10px}.page{max-width:1240px;margin:0 auto;padding:34px 24px 60px;min-height:75vh}.footer{text-align:center;padding:22px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}.hero{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;padding-top:42px;padding-bottom:65px}.hero-copy{padding:10px 0}.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.8px;color:#169c9d;margin-bottom:13px}.hero h1{font:800 clamp(36px,4.4vw,57px)/1.1 Manrope,sans-serif;letter-spacing:-2px;margin:0 0 20px}.gradient-text{background:linear-gradient(100deg,#109dc0,#30c88c);-webkit-background-clip:text;background-clip:text;color:transparent}.lead{color:var(--muted);font-size:17px;max-width:540px;margin-bottom:27px}.row{display:flex;gap:12px;flex-wrap:wrap}.trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:27px;color:var(--muted);font-size:11px}.hero-panel{border:1px solid var(--line);border-radius:25px;background:var(--surface);padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero-panel:before{content:"";position:absolute;width:240px;height:240px;right:-90px;top:-110px;border-radius:50%;background:linear-gradient(135deg,#25bdd2,#45d69a);opacity:.13}.panel-top,.section-title,.page-heading,.assignment-head,.subject-foot{display:flex;align-items:center;justify-content:space-between;gap:16px}.panel-top .brand{font-size:17px}.panel-top .mark{width:30px;height:30px}.muted{color:var(--muted)}.progress-big{display:flex;align-items:center;gap:18px;padding:20px 0}.ring{width:122px;height:122px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(#20b9b0 0 78%,#e8eff1 78% 100%);position:relative;flex-shrink:0}.ring:before{content:"";position:absolute;inset:10px;background:var(--surface);border-radius:50%}.ring strong{position:relative;font:800 28px Manrope}.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.mini-card{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:14px;display:grid;gap:4px}.mini-card span{font-size:20px}.mini-card b{font-size:19px}.mini-card small{color:var(--muted);font-size:11px}.bars{display:flex;gap:8px;margin-top:19px}.bars i{height:5px;border-radius:9px;background:linear-gradient(90deg,#159bc6,#2fc78d)}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:15px 0 30px}.feature,.surface,.stat-card,.subject-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}.feature>span{font-size:26px}.feature h3{font:700 16px Manrope;margin:12px 0 7px}.feature p{font-size:13px;color:var(--muted);margin:0}.page-heading{margin:0 0 27px}.page-heading h1{font:800 32px Manrope;letter-spacing:-.8px;margin:0 0 6px}.page-heading p{margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}.stat-card{display:grid;gap:6px}.stat-icon{font-size:20px}.stat-card small{font-size:12px;color:var(--muted)}.stat-card strong{font:800 29px Manrope}.stat-card .muted{font-size:11px}.content-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;margin-bottom:20px}.surface h2{font:700 19px Manrope;margin:0 0 16px}.section-title{margin-bottom:14px}.section-title h2{margin:0 0 4px}.section-title p{font-size:12px;margin:0}.text-link{font-size:12px;font-weight:700;white-space:nowrap}.subject-list{display:grid}.subject-row{display:flex;align-items:center;gap:13px;padding:13px 0;border-top:1px solid var(--line)}.subject-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#e1f7f6,#eaf6ff);font-size:20px;flex-shrink:0}.grow{flex:1;min-width:0}.subject-row b,.quick-action b{font-size:13px;display:block}.subject-row small,.quick-action small{font-size:11px;display:block;margin-top:3px}.arrow{color:var(--primary)}.quick-action{display:flex;gap:13px;align-items:center;padding:14px 0;border-top:1px solid var(--line)}.quick-action>span{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;background:#e6f8f5;color:#119f9d;font-size:20px}.recent{margin-top:8px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:12px}th{text-align:left;color:var(--muted);font-weight:700;background:var(--bg)}td,th{padding:13px 12px;border-bottom:1px solid var(--line);white-space:nowrap}.empty{text-align:center;padding:28px;color:var(--muted)}.empty>span{display:block;font-size:30px;margin-bottom:8px}.empty b{color:var(--text)}.empty p{font-size:12px}.auth-wrap{display:grid;place-items:center;min-height:60vh}.auth-card{width:min(100%,450px);padding:35px;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.auth-logo{text-align:center;margin-bottom:28px}.auth-logo h1{font:800 27px Manrope;margin:16px 0 4px}.auth-logo p{font-size:13px}.auth-card form,.stack{display:grid;gap:10px}.auth-card label,.stack label,.form-grid label{display:grid;gap:7px;font-size:12px;font-weight:700}.auth-card input,.stack input,.stack textarea,.stack select,.form-grid input{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:10px;padding:12px;outline:none}.auth-card input:focus,.stack input:focus,.stack textarea:focus,.form-grid input:focus{border-color:var(--primary)}.tiny{font-size:11px;line-height:1.6}.auth-card .tiny{margin-top:20px;text-align:center}.flash-wrap{max-width:1240px;margin:12px auto 0;padding:0 24px}.flash{padding:12px 16px;border-radius:12px;margin:7px 0;font-size:13px;background:#e5f7f0;color:#13785f}.flash.error{background:#ffeded;color:#a82b35}.flash.info{background:#e9f4ff;color:#1c5f95}.subject-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.subject-card{padding:23px}.subject-card-top{display:flex;justify-content:space-between;align-items:center}.subject-card h3{font:700 18px Manrope;margin:16px 0 8px}.subject-card p{font-size:13px;min-height:40px}.subject-foot{padding-top:15px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.form-grid{display:grid;gap:14px}.form-grid button{justify-self:start}.student-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.avatar{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#159bc6,#2fc78d);color:white;font-weight:800}.assignment-card{padding:14px;border:1px solid var(--line);border-radius:13px}.assignment-card p{font-size:12px;color:var(--muted);white-space:pre-wrap}.stack{gap:14px}.notice{padding:15px;border-radius:12px;background:#fff5df;color:#735315;font-size:12px;margin-bottom:20px}.report-value{font-weight:800}.bar{height:5px;background:var(--line);border-radius:8px;margin-top:5px;width:90px}.bar i{display:block;height:100%;background:linear-gradient(90deg,#159bc6,#2fc78d);border-radius:8px}pre{overflow:auto;background:var(--bg);border:1px solid var(--line);padding:14px;border-radius:10px;font-size:12px}.lesson-wrap{display:grid;grid-template-columns:1fr 300px;gap:20px;max-width:900px;margin:auto}.lesson-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow)}.lesson-top{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;font-weight:800;letter-spacing:1px}.lesson-progress{height:6px;background:var(--line);border-radius:8px;margin:13px 0 28px}.lesson-progress i{display:block;width:20%;height:100%;background:linear-gradient(90deg,#159bc6,#2fc78d);border-radius:8px}.lesson-emoji{text-align:center;font-size:46px}.lesson-card h2{text-align:center;font:800 23px Manrope}.lesson-card>p{text-align:center}.choices{display:grid;gap:10px;margin:25px 0}.choice{padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text);text-align:left;cursor:pointer}.choice:hover{border-color:var(--primary)}.choice.correct{border-color:#25b87f;background:#e7f8ef}.choice.wrong{border-color:#e26e77;background:#fff0f0}.lesson-feedback{min-height:22px;font-weight:700}.lesson-side p{font-size:13px}.streak{display:flex;align-items:center;gap:12px;padding:13px;background:var(--bg);border-radius:12px}.streak>span{font-size:24px}.streak small{display:block}.mobile-menu{display:none}
@media(max-width:1000px){.topbar{flex-wrap:wrap;gap:15px}.topbar nav{order:3;width:100%;margin:0;overflow:auto}.actions{margin-left:auto}.hero{gap:28px}.feature-grid{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.topbar{padding:12px 16px}.topbar nav{gap:14px}.topbar nav a{white-space:nowrap;font-size:12px}.actions .user-pill{display:none}.actions .btn{padding:9px 10px}.page{padding:25px 16px 42px}.hero{grid-template-columns:1fr;padding-top:18px;gap:25px}.hero h1{font-size:40px;letter-spacing:-1.5px}.lead{font-size:15px}.hero-panel{padding:17px}.ring{width:96px;height:96px}.ring strong{font-size:22px}.mini-grid{gap:7px}.mini-card{padding:10px}.mini-card small{font-size:10px}.trust{gap:10px}.feature-grid,.stats,.content-grid,.subject-cards,.lesson-wrap{grid-template-columns:1fr}.feature{padding:18px}.page-heading{align-items:flex-start;flex-direction:column}.page-heading h1{font-size:27px}.surface{padding:18px}.progress-big{gap:12px}.auth-card{padding:25px 20px}.lesson-side{order:-1}.footer{padding:18px 12px}.subject-card p{min-height:0}}

.subject-context{border-top:1px solid var(--line);padding-top:12px;margin-top:10px}.subject-context b{font-size:11px;color:var(--primary)}.subject-context p{font-size:12px;line-height:1.65;min-height:0;margin:4px 0 12px}.invite-link{display:grid;gap:10px;margin:16px 0}.invite-link input{width:100%;min-width:0;border:1px solid var(--line);background:var(--bg);color:var(--text);padding:12px;border-radius:10px}.student-row form{margin-left:auto}.student-row form .btn{white-space:nowrap}

/* AulaMate v2: tutor and provider settings */
.tutor-grid{align-items:start}.chat-history{margin-top:20px}.message-list{display:flex;flex-direction:column;gap:14px}.chat-message{padding:16px;border-radius:16px;border:1px solid var(--line,#dce6e4);background:var(--surface,#fff);max-width:100%;overflow-wrap:anywhere}.chat-message.user{margin-left:8%;background:var(--soft,#f1f8f6)}.message-meta{font-size:.78rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;opacity:.7;margin-bottom:8px}.message-body{line-height:1.65}.message-body p{margin:0 0 10px}.message-body p:last-child{margin-bottom:0}.message-body ul{margin:0 0 10px;padding-left:20px}.message-body li{margin:4px 0}.message-body h4{margin:14px 0 6px;font-size:.95rem}.message-body code{background:var(--soft,#f1f8f6);padding:1px 6px;border-radius:6px;font-size:.9em}.feature-list{display:grid;gap:16px}.feature-list>div{padding:14px;border-radius:12px;background:var(--soft,#f1f8f6)}.feature-list p{margin:6px 0 0}.provider-status{display:grid;gap:12px}.provider-status>div{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid var(--line,#dce6e4)}.provider-status p{width:100%;margin:0}.status-ok,.status-neutral{font-size:.78rem;padding:5px 9px;border-radius:999px}.status-ok{background:#e3f6ec;color:#176342}.status-neutral{background:#edf1f2;color:#45565c}.pill{border-radius:999px;padding:8px 12px;background:var(--soft,#f1f8f6);font-size:.82rem;align-self:center}
.pairs-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}.pairs-col{display:grid;gap:9px}.pair-btn{padding:13px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text);cursor:pointer;font-weight:600}.pair-btn:hover{border-color:var(--primary)}.pair-btn.sel{border-color:var(--primary);background:#e8f8f5;box-shadow:0 0 0 2px #18b7a322}.pair-btn.correct{border-color:#25b87f;background:#e7f8ef;opacity:.55;cursor:default}.pair-btn.wrong{border-color:#e26e77;background:#fff0f0}.pair-btn:disabled{opacity:.55}
#fillInput{width:100%;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--text)}#fillInput.wrong{border-color:#e26e77;background:#fff0f0}.section-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:14px}

/* Breadcrumb */
.crumbs{display:flex;align-items:center;gap:7px;flex-wrap:wrap;font-size:.82rem;margin-bottom:14px}
.crumbs a{color:var(--muted);font-weight:600}.crumbs a:hover{color:var(--primary)}
.crumb-sep{color:var(--muted);opacity:.6}.crumb-cur{font-weight:700;color:var(--text)}

/* Mobile nav toggle */
.nav-toggle{display:none}
@media(max-width:1000px){
  .nav-toggle{display:inline-grid;place-items:center}
  .topbar nav{display:none;order:3;width:100%;margin:0;flex-direction:column;align-items:stretch;gap:2px;padding:12px 0 4px;border-top:1px solid var(--line);overflow:visible}
  .topbar nav.open{display:flex}
  .topbar nav a{padding:10px 12px;border-radius:9px}
  .topbar nav a:hover{background:var(--soft,#f1f8f6)}
  .topbar{flex-wrap:wrap}
}

/* Calendário */
.exam-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.exam-today{color:#e26e77}
.exam-past{opacity:.55;padding:8px 12px}
@media(max-width:560px){.exam-row{grid-template-columns:1fr}}

/* Nav: página ativa + wrap em larguras médias */
.topbar nav{flex-wrap:wrap;row-gap:4px}
.topbar nav a.active{color:var(--primary);font-weight:700;position:relative}
.topbar nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:3px;border-radius:3px;background:linear-gradient(90deg,#159bc6,#2fc78d)}
.topbar nav a{position:relative}
@media(max-width:1000px){.topbar nav a.active::after{left:12px;right:auto;width:3px;bottom:8px;top:8px;height:auto}}

/* Seletor de idioma PT/EN/ES */
.lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.lang-switch a{padding:7px 9px;font-size:11px;font-weight:700;color:var(--muted)}
.lang-switch a.cur{background:linear-gradient(110deg,#159bc6,#2fc78d);color:#fff}
.lang-switch a:not(.cur):hover{color:var(--primary)}

/* Item de tema no menu mobile */
.nav-theme{display:none !important}
@media(max-width:1000px){
  #themeBtn{display:none}
  .nav-theme{display:flex !important;align-items:center;gap:10px;font-weight:600;border-top:1px solid var(--line);margin-top:6px;padding-top:14px}
  .nav-theme .theme-ico{font-size:15px}
}

/* Seletor de idioma: dropdown vertical */
.lang-menu{position:relative}
.lang-btn{display:inline-flex;align-items:center;gap:5px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--soft,#f1f8f6);color:var(--text);font-size:12px;font-weight:700;cursor:pointer}
.lang-btn:hover{border-color:var(--primary)}
.lang-list{display:none;position:absolute;top:calc(100% + 6px);right:0;flex-direction:column;min-width:150px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;z-index:30}
.lang-menu.open .lang-list{display:flex}
.lang-list a{padding:11px 14px;font-size:13px;font-weight:600;color:var(--muted)}
.lang-list a:hover{background:var(--soft,#f1f8f6);color:var(--primary)}
.lang-list a.cur{color:var(--primary);font-weight:700;background:var(--soft,#f1f8f6)}

/* Botão sair com ícone */
.btn-logout{padding:10px 13px}
.btn-logout svg{display:block}

/* Ícones Tabler (.ti) */
.ti{width:1.15em;height:1.15em;vertical-align:-.22em;flex:none}
.subject-icon .ti,.stat-icon .ti{width:24px;height:24px}
.lesson-emoji .ti{width:46px;height:46px;stroke-width:1.6}
.unit-ic{width:34px;height:34px;vertical-align:-.3em}
.streak>span .ti{width:24px;height:24px}
.streak-ic{display:inline-flex}
.flag-tag{display:inline-block;font-size:.7rem;font-weight:800;letter-spacing:.05em;padding:2px 6px;border-radius:6px;background:var(--soft,#f1f8f6);color:var(--muted);border:1px solid var(--line)}
.empty>span .ti{width:30px;height:30px}
.quick-action>span .ti{width:20px;height:20px}
#hearBtn .ti{width:26px;height:26px}