/* IvaPlan Loyalty Engine — общая таблица стилей (лендинг + документация API) */

:root{
  --paper:#F2F3F8;
  --surface:#FFFFFF;
  --surface-2:#E6E8F1;
  --panel:#E6E8F1;
  --panel-2:#DCE0EE;
  --code-bg:#EDEFF7;
  --ink:#12141F;
  --slate:#565B72;
  --line:#DBDEEA;
  --amber:#C77D1E;
  --amber-soft:#F5E3C9;
  --cobalt:#3454D1;
  --cobalt-soft:#DEE5FB;
  --get:#1C7C93; --get-bg:#DDF0F4;
  --post:#1F7A45; --post-bg:#E1F3E7;
  --delete:#B0281B; --delete-bg:#FBE6E4;
  --shadow: 0 1px 2px rgba(18,20,31,.05), 0 24px 48px -24px rgba(18,20,31,.28);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0C0E16;
    --surface:#151827;
    --surface-2:#1D2133;
    --panel:#151827;
    --panel-2:#1D2133;
    --code-bg:#12141F;
    --ink:#E9EAF3;
    --slate:#9298B2;
    --line:#2A2F45;
    --amber:#E3A24C;
    --amber-soft:#3A2C15;
    --cobalt:#7B94FF;
    --cobalt-soft:#1B2242;
    --get:#4FD1E0; --get-bg:#0F2C31;
    --post:#57D68A; --post-bg:#0F2B1C;
    --delete:#FF7A6E; --delete-bg:#2E1613;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 28px 56px -26px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"]{
  --paper:#0C0E16;
  --surface:#151827;
  --surface-2:#1D2133;
  --panel:#151827;
  --panel-2:#1D2133;
  --code-bg:#12141F;
  --ink:#E9EAF3;
  --slate:#9298B2;
  --line:#2A2F45;
  --amber:#E3A24C;
  --amber-soft:#3A2C15;
  --cobalt:#7B94FF;
  --cobalt-soft:#1B2242;
  --get:#4FD1E0; --get-bg:#0F2C31;
  --post:#57D68A; --post-bg:#0F2B1C;
  --delete:#FF7A6E; --delete-bg:#2E1613;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 28px 56px -26px rgba(0,0,0,.7);
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
::selection{ background: var(--cobalt-soft); color: var(--ink); }
::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-thumb{ background:var(--line); border-radius:6px; }

body{
  background: var(--paper); color: var(--ink);
  font-family: "Source Sans 3", ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing:antialiased;
}
body.page-landing{ font-size:17px; line-height:1.62; }
body.page-docs{ font-size:15px; line-height:1.5; }

a{ color:inherit; text-decoration:none; }
.page-docs main a{ color:var(--cobalt); }
.page-docs main a:hover{ text-decoration:underline; }

h1,h2,h3{
  font-family:"Archivo", ui-sans-serif, system-ui, sans-serif;
  font-weight:700; letter-spacing:-0.015em; text-wrap:balance; margin:0; color:var(--ink);
}
.mono{ font-family:"JetBrains Mono", ui-monospace, monospace; }
code, pre{
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}
code{ background:var(--code-bg); padding:.1em .4em; border-radius:4px; }
pre{ background:var(--code-bg); padding:12px 14px; border-radius:8px; overflow-x:auto; border:1px solid var(--line); }
pre code{ background:none; padding:0; }

.wrap{ max-width:1140px; margin:0 auto; padding:0 28px; }
.eyebrow{
  font-family:"JetBrains Mono"; font-size:.72rem; text-transform:uppercase; letter-spacing:.1em;
  color: var(--cobalt); display:block;
}

/* ---------------- mobile menu toggle (shared: .topbar and .site-topbar) ---------------- */
.menu-btn{
  display:none; flex-direction:column; justify-content:center; align-items:center; gap:5px;
  width:38px; height:38px; padding:0; flex:0 0 auto;
  border:1px solid var(--line); border-radius:8px; background:var(--surface); cursor:pointer;
}
.menu-btn span{
  display:block; width:16px; height:2px; background:var(--ink); border-radius:1px;
  transition: transform .18s ease, opacity .18s ease;
}
.menu-btn.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2){ opacity:0; }
.menu-btn.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }
@media (prefers-reduced-motion: reduce){ .menu-btn span{ transition:none; } }

/* ================= landing (index.html) ================= */

.topbar{ display:flex; align-items:center; justify-content:space-between; padding:26px 0; gap:16px; }
.brand{ display:flex; align-items:center; gap:10px; font-family:"Archivo"; font-weight:700; font-size:1.08rem; }
.brand .mark{
  width:28px; height:28px; border-radius:7px; background:var(--ink); color:var(--paper);
  display:flex; align-items:center; justify-content:center; font-family:"JetBrains Mono"; font-size:.72rem;
}
.topbar nav{ display:flex; align-items:center; gap:26px; font-size:.9rem; color:var(--slate); }
.topbar nav a:hover{ color:var(--ink); }
.topbar-actions{ display:flex; align-items:center; gap:12px; }
.cta-btn{
  background:var(--ink); color:var(--paper); padding:9px 17px; border-radius:8px;
  font-size:.86rem; font-weight:600;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .cta-btn{ background:var(--cobalt); color:#0C0E16; } }
:root[data-theme="dark"] .cta-btn{ background:var(--cobalt); color:#0C0E16; }

.hero{ padding: 60px 0 30px 0; display:grid; grid-template-columns: 1fr 1fr; gap:52px; align-items:center; }
.hero h1{ font-size: clamp(2.1rem, 3.6vw, 2.9rem); line-height:1.08; margin-top:16px; }
.hero .dek{ margin-top:20px; font-size:1.08rem; color:var(--slate); max-width:48ch; }
.hero-stats{ display:flex; gap:32px; margin-top:30px; }
.hstat .n{ font-family:"Archivo"; font-weight:800; font-size:1.5rem; }
.hstat .l{ font-size:.76rem; color:var(--slate); margin-top:2px; }

.rule-card{
  background:var(--surface); border:1px solid var(--line); border-radius:16px;
  box-shadow: var(--shadow); overflow:hidden;
}
.rule-card .rc-head{
  display:flex; justify-content:space-between; align-items:center;
  padding:16px 20px; border-bottom:1px solid var(--line); background:var(--surface-2);
}
.rule-card .rc-head .rc-title{ font-size:.86rem; font-weight:600; }
.rule-card .rc-head .rc-status{
  font-family:"JetBrains Mono"; font-size:.66rem; text-transform:uppercase; letter-spacing:.05em;
  color: var(--cobalt); background:var(--cobalt-soft); padding:3px 8px; border-radius:100px;
}
.rc-body{ padding:6px 8px; }
.rc-row{
  display:grid; grid-template-columns: 1fr auto; gap:12px; align-items:center;
  padding:11px 12px; border-radius:9px;
}
.rc-row:hover{ background:var(--surface-2); }
.rc-row .rc-cat{ font-size:.88rem; font-weight:500; }
.rc-row .rc-sub{ font-size:.74rem; color:var(--slate); margin-top:1px; }
.rc-row .rc-pct{ font-family:"JetBrains Mono"; font-weight:600; font-size:.94rem; color:var(--amber); }
.rc-foot{
  display:flex; justify-content:space-between; padding:13px 20px; border-top:1px solid var(--line);
  font-size:.76rem; color:var(--slate); font-family:"JetBrains Mono";
}

.page-landing section{ padding:72px 0; border-top:1px solid var(--line); }
.page-landing section.no-border{ border-top:none; }
.section-head{ max-width:640px; margin-bottom:38px; }
.section-head h2{ font-size:clamp(1.55rem,2.6vw,2.05rem); margin-top:10px; }
.section-head p{ margin-top:13px; color:var(--slate); font-size:1.01rem; }

.cap-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.cap-card{ background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:24px 22px; }
.cap-card .cap-idx{ font-family:"JetBrains Mono"; font-size:.72rem; color:var(--cobalt); }
.cap-card h3{ font-size:1.02rem; margin-top:12px; }
.cap-card p{ margin-top:9px; font-size:.87rem; color:var(--slate); }

.lifecycle{ display:flex; align-items:stretch; gap:0; margin-top:8px; }
.lc-step{ flex:1; position:relative; padding: 22px 20px 22px 0; }
.lc-step:not(:last-child)::after{
  content:"→"; position:absolute; right:-6px; top:50%; transform:translateY(-50%);
  color:var(--slate); font-size:1.1rem;
}
.lc-step .lc-tag{
  font-family:"JetBrains Mono"; font-size:.66rem; text-transform:uppercase; letter-spacing:.05em;
  padding:3px 8px; border-radius:100px; display:inline-block;
}
.lc-step:nth-child(1) .lc-tag{ background:var(--cobalt-soft); color:var(--cobalt); }
.lc-step:nth-child(2) .lc-tag{ background:var(--amber-soft); color:var(--amber); }
.lc-step:nth-child(3) .lc-tag{ background:var(--surface-2); color:var(--slate); }
.lc-step h3{ font-size:.98rem; margin-top:10px; }
.lc-step p{ font-size:.84rem; color:var(--slate); margin-top:7px; }

.ledger-section{ display:grid; grid-template-columns:1fr 1.05fr; gap:48px; align-items:center; }
.ledger-copy .feat-list{ list-style:none; padding:0; margin:22px 0 0 0; display:flex; flex-direction:column; gap:11px; }
.ledger-copy .feat-list li{ position:relative; padding-left:20px; font-size:.94rem; }
.ledger-copy .feat-list li::before{ content:""; position:absolute; left:0; top:8px; width:7px; height:7px; background:var(--cobalt); }
.ledger-card{ background:var(--surface); border:1px solid var(--line); border-radius:16px; box-shadow:var(--shadow); overflow:hidden; }
.ledger-head{ padding:18px 20px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; }
.ledger-head .lh-label{ font-size:.78rem; color:var(--slate); }
.ledger-head .lh-val{ font-family:"Archivo"; font-weight:800; font-size:1.5rem; margin-top:4px; }
.ledger-row{ display:grid; grid-template-columns: 1fr auto auto; gap:14px; padding:12px 20px; border-top:1px solid var(--line); align-items:center; }
.ledger-row .lr-op{ font-size:.85rem; font-weight:500; }
.ledger-row .lr-meta{ font-size:.72rem; color:var(--slate); margin-top:2px; }
.ledger-row .lr-bal{ font-family:"JetBrains Mono"; font-size:.76rem; color:var(--slate); text-align:right; }
.ledger-row .lr-amt{ font-family:"JetBrains Mono"; font-size:.88rem; font-weight:600; text-align:right; }
.lr-amt.plus{ color:var(--cobalt); }
.lr-amt.minus{ color:var(--slate); }

.role-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.role-card{ background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:20px; }
.role-card .rc-name{ font-family:"JetBrains Mono"; font-size:.78rem; color:var(--amber); font-weight:600; }
.role-card p{ margin-top:9px; font-size:.85rem; color:var(--slate); }

.integration{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
.integration .feat-list{ list-style:none; padding:0; margin:22px 0 0 0; display:flex; flex-direction:column; gap:11px; }
.integration .feat-list li{ position:relative; padding-left:20px; font-size:.94rem; }
.integration .feat-list li::before{ content:""; position:absolute; left:0; top:8px; width:7px; height:7px; background:var(--amber); }
.code-card{
  background: var(--ink); color:#D7DAEC; border-radius:14px; padding:22px 24px; box-shadow:var(--shadow);
  font-family:"JetBrains Mono"; font-size:.82rem; line-height:1.7; overflow-x:auto;
}
.code-card .cc-label{ font-size:.68rem; text-transform:uppercase; letter-spacing:.07em; color:#7C84A6; margin-bottom:10px; display:block; }
.code-card .k{ color:#7B94FF; }
.code-card .s{ color:#E3A24C; }
.code-card .n{ color:#79D9B8; }
.code-card .p{ color:#D7DAEC; }

.trust-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.trust-card{ padding:22px 4px; }
.trust-card .t-num{ font-family:"Archivo"; font-weight:800; font-size:1.9rem; color:var(--cobalt); }
.trust-card .t-lbl{ font-size:.86rem; margin-top:8px; font-weight:600; }
.trust-card .t-desc{ font-size:.84rem; color:var(--slate); margin-top:5px; }

.closing{ text-align:left; display:grid; grid-template-columns:1.05fr 0.95fr; gap:48px; align-items:center; }
.closing h2{ font-size:clamp(1.7rem,3vw,2.3rem); max-width:16ch; }
.closing p{ margin-top:16px; color:var(--slate); font-size:1.02rem; max-width:52ch; }
.closing-actions{ margin-top:26px; display:flex; gap:14px; }
.btn-outline{
  border:1px solid var(--line); padding:10px 18px; border-radius:8px;
  font-size:.88rem; font-weight:600; color:var(--ink);
}

.contact-card{ background:var(--surface); border:1px solid var(--line); border-radius:16px; box-shadow:var(--shadow); padding:8px; }
.contact-row{
  display:flex; align-items:center; gap:16px; padding:16px 14px; border-radius:10px;
  color:var(--ink); transition: background .15s ease;
}
.contact-row:hover{ background:var(--surface-2); }
.contact-row + .contact-row{ border-top:1px solid var(--line); }
.contact-row .c-icon{
  flex:0 0 auto; width:40px; height:40px; border-radius:10px;
  background:var(--cobalt-soft); color:var(--cobalt);
  display:flex; align-items:center; justify-content:center;
}
.contact-row .c-icon svg{ width:18px; height:18px; }
.contact-row .c-lbl{ font-size:.74rem; color:var(--slate); }
.contact-row .c-val{ font-family:"JetBrains Mono"; font-size:1rem; font-weight:500; margin-top:2px; }
.contact-foot{ padding:14px 20px 16px 20px; font-size:.78rem; color:var(--slate); border-top:1px solid var(--line); }

footer.page-foot{
  padding:36px 0 50px 0; display:flex; justify-content:space-between; flex-wrap:wrap; gap:14px;
  font-size:.82rem; color:var(--slate);
}

@media (max-width: 900px){
  .hero{ grid-template-columns:1fr; }
  .cap-grid{ grid-template-columns:repeat(2,1fr); }
  .lifecycle{ flex-direction:column; }
  .lc-step:not(:last-child)::after{ content:"↓"; right:auto; left:0; top:auto; bottom:-2px; transform:none; }
  .ledger-section{ grid-template-columns:1fr; }
  .role-grid{ grid-template-columns:repeat(2,1fr); }
  .integration{ grid-template-columns:1fr; }
  .trust-row{ grid-template-columns:1fr; }
  .closing{ grid-template-columns:1fr; }

  .menu-btn{ display:flex; }
  .topbar{ flex-wrap:wrap; row-gap:14px; }
  .topbar nav{
    display:none; order:3; width:100%;
    flex-direction:column; align-items:stretch; gap:0;
    border-top:1px solid var(--line); padding-top:6px;
  }
  .topbar nav.open{ display:flex; }
  .topbar nav a{ padding:13px 4px; border-bottom:1px solid var(--line); font-size:.95rem; }
}

/* ================= API docs (api.html) ================= */

.site-topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 28px; border-bottom:1px solid var(--line); background:var(--paper);
  position:sticky; top:0; z-index:20;
}
.site-topbar .brand{ display:flex; align-items:center; gap:10px; font-family:"Archivo"; font-weight:700; font-size:1.02rem; color:var(--ink); }
.site-topbar .brand .mark{
  width:26px; height:26px; border-radius:7px; background:var(--ink); color:var(--paper);
  display:flex; align-items:center; justify-content:center; font-family:"JetBrains Mono"; font-size:.68rem;
}
.site-topbar nav{ display:flex; align-items:center; gap:22px; font-size:.86rem; }
.site-topbar nav a{ color:var(--slate); }
.site-topbar nav a:hover{ color:var(--ink); }
.site-topbar nav a.current{ color:var(--cobalt); font-weight:600; }

@media (max-width: 900px){
  .site-topbar{ flex-wrap:wrap; row-gap:12px; }
  .menu-btn{ display:flex; }
  .site-topbar nav{
    display:none; order:3; width:100%;
    flex-direction:column; align-items:stretch; gap:0;
    border-top:1px solid var(--line); padding-top:6px;
  }
  .site-topbar nav.open{ display:flex; }
  .site-topbar nav a{ padding:13px 4px; border-bottom:1px solid var(--line); font-size:.95rem; }
}

.layout{ display:grid; grid-template-columns: 300px 1fr; min-height:calc(100vh - 58px); }
@media (max-width: 860px){
  .layout{ grid-template-columns: 1fr; }
  .sidebar{ position:sticky; top:57px; z-index:5; max-height:60vh; overflow-y:auto; }
}

.sidebar{ background:var(--panel); border-right:1px solid var(--line); padding:20px 14px; overflow-y:auto; }
.sidebar .doc-title{ font-family:"Archivo"; font-weight:700; font-size:16px; margin:0 0 2px; padding:0 6px; }
.sidebar .ver{ font-size:12px; color:var(--slate); margin:0 0 16px; padding:0 6px; }
.search{
  width:100%; padding:8px 10px; border-radius:8px; border:1px solid var(--line);
  background:var(--paper); color:var(--ink); font-size:13px; margin-bottom:14px;
}
.nav-group{ margin-bottom:6px; }
.nav-group-title{
  font-size:11px; text-transform:uppercase; letter-spacing:.05em; color:var(--slate);
  padding:10px 6px 4px; font-weight:600;
}
.nav-item{ display:flex; align-items:center; gap:8px; padding:6px 6px; border-radius:6px; cursor:pointer; font-size:13px; color:var(--ink); }
.nav-item:hover{ background:var(--panel-2); }
.nav-item.active{ background:var(--cobalt-soft); color:var(--cobalt); }
.nav-item .path{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.method-badge{ font-size:10px; font-weight:700; padding:2px 6px; border-radius:4px; min-width:38px; text-align:center; flex:none; }
.m-get{ color:var(--get); background:var(--get-bg); }
.m-post{ color:var(--post); background:var(--post-bg); }
.m-put{ color:var(--amber); background:var(--amber-soft); }
.m-delete{ color:var(--delete); background:var(--delete-bg); }
.m-schema{ color:var(--slate); background:var(--panel-2); }

main{ padding:32px 40px 80px; max-width:900px; overflow-x:hidden; }
@media (max-width: 600px){ main{ padding:20px 16px 60px; } }

.top-info h1{ font-size:26px; margin:0 0 6px; }
.top-info p{ color:var(--slate); max-width:70ch; }
.badge-list{ display:flex; gap:8px; flex-wrap:wrap; margin-top:14px; }
.pill{ font-size:12px; padding:4px 10px; border-radius:999px; background:var(--panel-2); color:var(--slate); border:1px solid var(--line); }

.endpoint-header{ display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-bottom:6px; }
.endpoint-header .method-badge{ font-size:12px; padding:4px 10px; }
.endpoint-header code.route{ font-size:16px; background:none; padding:0; color:var(--ink); }
h2.summary{ font-size:20px; margin:4px 0 4px; }
.endpoint-desc{ color:var(--slate); margin:0 0 20px; white-space:pre-line; }

.section-title{
  font-size:13px; text-transform:uppercase; letter-spacing:.04em; color:var(--slate);
  margin:26px 0 10px; font-weight:600; border-bottom:1px solid var(--line); padding-bottom:6px;
}

table.params{ width:100%; border-collapse:collapse; font-size:13px; }
table.params th{ text-align:left; color:var(--slate); font-weight:600; padding:6px 10px; border-bottom:1px solid var(--line); }
table.params td{ padding:8px 10px; border-bottom:1px solid var(--line); vertical-align:top; }
table.params tr:last-child td{ border-bottom:none; }

.status-block{ border:1px solid var(--line); border-radius:10px; margin-bottom:14px; overflow:hidden; }
.status-head{ display:flex; align-items:center; gap:10px; padding:10px 14px; background:var(--panel); font-size:13px; cursor:pointer; }
.status-code{ font-weight:700; font-family: ui-monospace, monospace; font-size:13px; }
.status-2xx{ color:var(--post); } .status-4xx{ color:var(--amber); } .status-5xx{ color:var(--delete); }
.status-body{ padding:14px; display:none; }
.status-block.open .status-body{ display:block; }
.status-desc{ color:var(--slate); font-size:13px; margin-bottom:4px; }

.example-tabs{ display:flex; gap:4px; margin-bottom:8px; flex-wrap:wrap; }
.example-tab{
  font-size:12px; padding:4px 10px; border-radius:6px 6px 0 0; cursor:pointer;
  background:var(--panel-2); color:var(--slate); border:1px solid var(--line); border-bottom:none;
}
.example-tab.active{ background:var(--code-bg); color:var(--ink); }
.example-panel{ display:none; }
.example-panel.active{ display:block; }

.schema-tree{ font-size:13px; }
.prop{ padding:6px 0 6px 0; border-bottom:1px dashed var(--line); }
.prop:last-child{ border-bottom:none; }
.prop-row{ display:flex; align-items:baseline; gap:8px; flex-wrap:wrap; }
.prop-name{ font-family: ui-monospace, monospace; font-weight:600; }
.prop-type{ color:var(--cobalt); font-size:12px; background:var(--cobalt-soft); padding:1px 6px; border-radius:4px; }
.prop-req{ color:var(--delete); font-size:11px; font-weight:700; }
.prop-null{ color:var(--slate); font-size:11px; }
.prop-desc{ color:var(--slate); font-size:12.5px; margin-top:2px; }
.prop-children{ margin-left:18px; margin-top:6px; border-left:2px solid var(--line); padding-left:12px; }

.schema-card{ border:1px solid var(--line); border-radius:10px; padding:16px; margin-bottom:16px; background:var(--panel); }
.schema-card h3{ margin:0 0 10px; font-size:15px; font-family: ui-monospace, monospace; }

.security-note{
  display:inline-flex; align-items:center; gap:6px; font-size:12px; color:var(--slate);
  border:1px solid var(--line); border-radius:6px; padding:3px 8px; margin-bottom:16px;
}
.footer-note{ margin-top:50px; color:var(--slate); font-size:12px; border-top:1px solid var(--line); padding-top:14px; }