/* k2.css — общий стиль служебных страниц AINO School в духе посадочной K2 «Форма открытия»
   (15.10, решение Олега: «все страницы под стиль K2»). Подключается в /auth/, /family.html,
   /parents.html. Тёплая «бумага», тёмно-синие чернила, один синий акцент, Onest. */
:root{--paper:#f5f4ed;--ink:#022261;--blue:#0039c8;--aqua:#22e6d3;--line:rgba(2,34,97,.18);--soft:#e8eee9;--card:#fbfbf6;--muted:#53627b;--ok:#16846e;--err:#b3261e;--gutter:clamp(22px,4.6vw,76px);--font:Onest,Arial,"Segoe UI",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;line-height:1.5}
button,input,select{font:inherit;color:inherit}
button,a,input{-webkit-tap-highlight-color:transparent}
a{color:inherit;text-underline-offset:4px}
button{cursor:pointer;border:0;background:none}
button:disabled{cursor:default;opacity:.55}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
::selection{background:var(--aqua);color:var(--ink)}
[hidden]{display:none!important}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-weight:500;letter-spacing:-.04em;line-height:1.08}
h1{font-size:clamp(38px,5vw,64px);letter-spacing:-.05em}
h2{font-size:clamp(26px,3vw,38px)}
h3{font-size:22px;letter-spacing:-.03em}
img{max-width:100%}
.wrap{padding-inline:var(--gutter)}
.narrow{max-width:520px;margin:0 auto}
.mid{max-width:860px;margin:0 auto}
.eyebrow{font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:700}
.kicker{display:flex;align-items:center;gap:10px}
.kicker::before{content:"";width:7px;height:7px;background:var(--blue);border-radius:50%}
.muted,.hint{color:var(--muted)}
.hint{font-size:13px;line-height:1.5;margin:10px 0 0}
.lead{font-size:17px;line-height:1.55;color:var(--muted);max-width:60ch}

/* шапка и подвал */
.site-header{height:100px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);position:relative;z-index:4}
.brand{width:150px;height:76px;display:flex;align-items:center;overflow:hidden;text-decoration:none}
.brand img{width:170px;max-width:none;margin-left:-8px}
.header-links{display:flex;gap:28px;align-items:center;font-size:13px}
.header-links a{text-decoration:none}
.header-links a:hover{text-decoration:underline}
.header-login{background:transparent;border:1px solid var(--line);padding:12px 18px;border-radius:99px;font-size:13px;text-decoration:none!important}
.site-footer{border-top:1px solid var(--line);margin-top:60px;padding-top:25px;padding-bottom:28px;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted);flex-wrap:wrap}
.footer-contact{display:flex;gap:28px;flex-wrap:wrap}
.site-footer a{text-decoration:none}

/* кнопки */
.button,.btn{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;background:var(--blue);color:#fff;padding:18px 22px;min-height:54px;border-radius:4px;text-decoration:none;font-size:14px;font-weight:600;transition:background .2s,transform .2s;border:1px solid var(--blue);cursor:pointer}
.button:hover,.btn:hover{background:var(--ink);border-color:var(--ink);transform:translateY(-2px)}
.button .arrow,.btn .arrow{font-size:22px;line-height:.65}
.button.outline,.btn.outline,.btn:not(.primary):not(.grad):not(.danger){background:transparent;color:var(--ink);border-color:var(--line)}
.button.outline:hover,.btn.outline:hover,.btn:not(.primary):not(.grad):not(.danger):hover{background:#fff;border-color:var(--ink);transform:translateY(-2px)}
.btn.primary,.btn.grad{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn.primary:hover,.btn.grad:hover{background:var(--ink);border-color:var(--ink)}
.btn.small{min-height:40px;padding:0 14px;font-size:13px;gap:10px}
.btn.danger{color:var(--err);background:transparent;border-color:var(--line)}
.text-button{border:0;padding:0;background:none;color:var(--ink);text-decoration:underline;text-underline-offset:5px;font-size:13px;cursor:pointer}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px;align-items:center}

/* поля */
label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin:16px 0 7px}
input:not([type=checkbox]),select{display:block;width:100%;border:1px solid var(--line);border-radius:3px;background:#fffdf8;padding:12px 13px;font-size:16px;color:var(--ink)}
input:focus,select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,57,200,.12)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.row{grid-template-columns:1fr}}
.check{display:flex;gap:10px;align-items:flex-start;margin-top:14px;font-size:14px;line-height:1.45;color:var(--ink);font-weight:400}
.check input[type=checkbox]{width:18px;height:18px;margin:3px 0 0;flex:none;accent-color:var(--blue)}
.msg{margin-top:12px;font-size:13px;line-height:1.5;display:none}
.msg.err{display:block;color:var(--err)}
.msg.ok{display:block;color:var(--ok)}
.divider{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:12px;margin:20px 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}

/* карточки и вкладки */
.card{background:var(--card);border:1px solid var(--line);border-radius:7px;padding:24px;box-shadow:0 12px 30px rgba(2,34,97,.035)}
.card+.card{margin-top:18px}
.card h2{font-size:24px;margin-bottom:14px}
.tabs,.login-tabs{display:flex;gap:22px;border-bottom:1px solid var(--line);margin-bottom:6px}
.tabs button,.login-tabs button{background:none;padding:12px 0;font-size:13px;border-bottom:2px solid transparent;color:var(--muted);font-weight:600;margin-bottom:-1px}
.tabs button[aria-selected="true"],.login-tabs button[aria-pressed="true"]{border-color:var(--blue);color:var(--blue)}
.consent{font-size:12px;line-height:1.55;color:var(--muted);max-height:120px;overflow:auto;padding:10px 12px;border:1px solid var(--line);border-radius:3px;background:#fffdf8;margin-top:10px}
code.url{font-family:ui-monospace,Menlo,Consolas,monospace;background:var(--soft);padding:2px 6px;border-radius:3px;font-size:.95em}

/* тёмный блок (как «Для родителей» на посадочной) */
.ink{background:var(--ink);color:var(--paper);padding:48px var(--gutter);border-radius:7px}
.ink h2{color:#fff}
.ink p{color:#d3dfef}
.ink .aqua{color:var(--aqua)}
.ink a{color:#fff}

/* шаги / строки принципов */
.principle-row{display:grid;grid-template-columns:70px 1fr 1.5fr;gap:30px;align-items:start;padding:26px 0;border-top:1px solid var(--line)}
.principle-row .n{font-size:13px;color:var(--blue);padding-top:5px}
.principle-row h3{font-size:22px;line-height:1.2}
.principle-row p{font-size:15px;line-height:1.6;max-width:570px}
.principle-row em,.accent{font-style:normal;color:var(--blue)}
.steps-ol{display:grid;gap:12px;margin:0;padding:0;list-style:none;counter-reset:s}
.steps-ol li{position:relative;padding-left:40px;font-size:15px;line-height:1.5;counter-increment:s}
.steps-ol li::before{content:"0" counter(s);position:absolute;left:0;top:3px;font-size:11px;letter-spacing:.08em;color:var(--blue);font-weight:700}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}
.facts b{display:block;font-size:26px;letter-spacing:-.04em;font-weight:500;color:var(--blue)}
.facts p{font-size:13px;line-height:1.6;color:var(--muted);margin-top:8px}
@media(max-width:820px){.site-header{height:85px}.header-links{gap:16px}.nav-detail{display:none}.principle-row{grid-template-columns:30px 1fr 1.4fr;gap:20px}.facts{grid-template-columns:1fr;gap:18px}}
@media(max-width:560px){:root{--gutter:22px}.site-header{height:73px}.brand{width:115px;height:66px}.brand img{width:141px;margin-left:-13px}.header-login{padding:9px 12px;font-size:12px}.principle-row{grid-template-columns:27px 1fr;gap:10px 12px;padding:22px 0}.principle-row p{grid-column:2;font-size:13px}.card{padding:18px}.ink{padding:32px 22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}