/* ============================================================
   OKOSUM — Design System v2
   Modern SaaS visual language: floating nav, bold display type,
   mesh-gradient surfaces, bento cards, pill buttons.
   Brand colors preserved: navy / blue / green. No new hues.
   ============================================================ */

:root{
  --navy:#0A1830;
  --navy-deep:#060F20;
  --ink:#0F1B2E;
  --slate:#4A5A72;
  --slate-soft:#8592A3;
  --line:#E4E9EF;
  --line-soft:#EEF1F5;
  --bg:#F7F9FB;
  --card:#FFFFFF;
  --brand-blue:#1476E0;
  --brand-blue-deep:#0E5BC0;
  --brand-cyan:#22B8E8;
  --accent:#0FAF7F;
  --accent-deep:#0C8C64;
  --accent-soft:#E1F6EF;
  --blue-soft:#E7F1FD;
  --gold:#0FAF7F;
  --danger:#C2452E;
  --danger-soft:#FCEEEA;
  --ease:cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-xs:0 1px 2px rgba(10,24,48,0.05);
  --shadow-sm:0 2px 8px rgba(10,24,48,0.06);
  --shadow-md:0 8px 24px -4px rgba(10,24,48,0.10), 0 2px 6px rgba(10,24,48,0.05);
  --shadow-lg:0 20px 48px -12px rgba(10,24,48,0.20), 0 4px 12px rgba(10,24,48,0.06);
  --shadow-glow-blue:0 0 0 1px rgba(20,118,224,0.14), 0 16px 40px -10px rgba(20,118,224,0.35);
  --shadow-glow-green:0 0 0 1px rgba(15,175,127,0.16), 0 16px 40px -10px rgba(15,175,127,0.35);
}
*{box-sizing:border-box;}
html,body{ margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  -webkit-font-smoothing:antialiased;
}
a{ color:var(--accent); transition:color 0.15s ease; }
::selection{ background:rgba(20,118,224,0.2); color:var(--navy); }
h1,h2,h3,h4{ font-family:'Inter', sans-serif; letter-spacing:-0.02em; }

/* ---------- Scroll-reveal (activated by site.js) ---------- */
.reveal-init{ opacity:0; transform:translateY(18px); }
.reveal-in{
  opacity:1; transform:translateY(0);
  transition:opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
@media (prefers-reduced-motion: reduce){ .reveal-init{ opacity:1; transform:none; } }

/* ============================================================
   HEADER / FLOATING NAV
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px 16px 0;
  pointer-events:none;
}
.nav-wrap{
  pointer-events:auto;
  max-width:1080px;
  margin:0 auto;
  padding:9px 10px 9px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  background:rgba(10,24,48,0.72);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--r-pill);
  box-shadow:0 8px 30px -8px rgba(6,15,32,0.45);
  transition:box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.is-scrolled .nav-wrap{
  box-shadow:0 12px 36px -6px rgba(6,15,32,0.55);
  background:rgba(8,19,39,0.86);
}
.brand{
  display:flex;
  align-items:center;
  gap:9px;
  font-weight:700;
  font-size:18px;
  color:#FFFFFF;
  text-decoration:none;
  letter-spacing:-0.01em;
  transition:opacity 0.15s ease;
}
.brand:hover{ opacity:0.88; }
.brand img{
  height:26px;
  width:auto;
  display:block;
  filter:drop-shadow(0 0 10px rgba(20,118,224,0.4));
}
.brand .wordmark{ color:#FFFFFF; white-space:nowrap; }
.brand .wordmark span{ color:var(--brand-cyan); }
.brand .tagline{ display:none; }
@media (min-width: 640px){
  .brand .tagline{
    display:inline;
    font-weight:500;
    font-size:10px;
    letter-spacing:0.5px;
    text-transform:uppercase;
    color:#7F92AC;
    margin-left:4px;
    padding-left:9px;
    border-left:1px solid rgba(255,255,255,0.14);
  }
}

.nav-toggle{
  display:none;
  width:34px; height:34px;
  border:1px solid rgba(255,255,255,0.14);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,0.05);
  cursor:pointer;
  position:relative;
  flex-shrink:0;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:"";
  position:absolute;
  left:9px; right:9px;
  height:2px;
  background:#FFFFFF;
  border-radius:2px;
  transition:transform 0.22s var(--ease), opacity 0.2s ease, top 0.22s var(--ease);
}
.nav-toggle span{ top:16px; }
.nav-toggle span::before{ top:-6px; left:0; right:0; }
.nav-toggle span::after{ top:6px; left:0; right:0; }
.nav-toggle.is-open span{ background:transparent; }
.nav-toggle.is-open span::before{ top:0; transform:rotate(45deg); }
.nav-toggle.is-open span::after{ top:0; transform:rotate(-45deg); }

.site-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
}
.site-nav a{
  position:relative;
  color:#C6D2E3;
  text-decoration:none;
  font-size:13.5px;
  font-weight:500;
  letter-spacing:0.01em;
  padding:8px 13px;
  border-radius:var(--r-pill);
  transition:color 0.15s ease, background 0.2s ease;
}
.site-nav a:hover{ color:#FFFFFF; background:rgba(255,255,255,0.07); }
.site-nav a.active{ color:#FFFFFF; background:rgba(255,255,255,0.1); }

.nav-dropdown{ position:relative; }
.nav-dropdown > .dropdown-trigger{
  color:#C6D2E3;
  text-decoration:none;
  font-size:13.5px;
  font-weight:500;
  letter-spacing:0.01em;
  cursor:pointer;
  background:none;
  border:none;
  font-family:'Inter', sans-serif;
  padding:8px 13px;
  border-radius:var(--r-pill);
  transition:color 0.15s ease, background 0.2s ease;
}
.nav-dropdown:hover > .dropdown-trigger,
.nav-dropdown.active > .dropdown-trigger{ color:#FFFFFF; background:rgba(255,255,255,0.1); }

.dropdown-menu{
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px) scale(0.98);
  pointer-events:none;
  position:absolute;
  top:44px;
  left:0;
  background:rgba(10,24,48,0.95);
  backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:var(--r-md);
  padding:7px;
  min-width:210px;
  box-shadow:var(--shadow-lg);
  z-index:30;
  transition:opacity 0.18s ease, transform 0.2s var(--ease-spring), visibility 0.18s;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu,
.nav-dropdown.mobile-open .dropdown-menu{
  opacity:1; visibility:visible; transform:translateY(0) scale(1); pointer-events:auto;
}
.dropdown-menu a{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:9px;
  font-size:13px;
  color:#C6D2E3 !important;
  text-decoration:none;
  transition:background 0.15s ease, padding-left 0.15s ease;
}
.dropdown-menu a:hover{ background:rgba(255,255,255,0.09); color:#FFFFFF !important; padding-left:15px; }
.dropdown-menu .soon-tag{
  font-size:9px;
  letter-spacing:0.5px;
  text-transform:uppercase;
  color:var(--brand-cyan);
  border:1px solid rgba(34,184,232,0.5);
  border-radius:var(--r-pill);
  padding:1px 6px;
  flex-shrink:0;
}

@media (max-width: 900px){
  .nav-toggle{ display:block; }
  .site-nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    background:rgba(255,255,255,0.04);
    border-radius:var(--r-md);
    margin-top:10px;
    padding:8px;
    border:1px solid rgba(255,255,255,0.08);
  }
  .site-nav.mobile-open{ display:flex; }
  .site-nav > a, .nav-dropdown > .dropdown-trigger{
    border-radius:10px;
    width:100%;
    text-align:left;
  }
  .nav-dropdown{ width:100%; }
  .dropdown-menu{
    position:static;
    display:none;
    opacity:1; visibility:visible; transform:none; pointer-events:auto;
    box-shadow:none;
    border:none;
    background:rgba(255,255,255,0.03);
    margin-top:2px;
    min-width:0;
    width:100%;
  }
  .nav-dropdown.mobile-open .dropdown-menu{ display:block; }
}

/* ============================================================
   PAGE SHELL
   ============================================================ */
main{ flex:1; width:100%; }
.page-wrap{
  max-width:1120px;
  margin:0 auto;
  padding:44px 16px 64px;
  display:flex;
  gap:24px;
  align-items:flex-start;
  justify-content:center;
}
.main-col{ max-width:660px; width:100%; flex-shrink:0; }

/* ============================================================
   CARDS / SECTIONS
   ============================================================ */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);
  overflow:hidden;
  transition:box-shadow 0.3s ease;
}
.card-header{
  background:
    radial-gradient(120% 180% at 100% -20%, rgba(34,184,232,0.35), transparent 55%),
    radial-gradient(90% 140% at -10% 120%, rgba(15,175,127,0.28), transparent 55%),
    var(--navy);
  padding:34px 36px;
  position:relative;
  overflow:hidden;
}
.card-header::after{
  content:"";
  position:absolute; left:0; bottom:0; width:100%; height:3px;
  background:linear-gradient(90deg, var(--brand-blue), var(--accent) 70%);
}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:11px;
  letter-spacing:0.15em;
  text-transform:uppercase;
  color:#8FB3D9;
  margin-bottom:10px;
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.eyebrow::before{
  content:"";
  width:6px; height:6px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(15,175,127,0.25);
}
h1.page-title{
  font-weight:800;
  font-size:28px;
  line-height:1.15;
  color:#FFFFFF;
  margin:0;
  letter-spacing:-0.02em;
  position:relative;
}
.card-header p{
  margin:10px 0 0;
  color:#B7C6DB;
  font-size:13.5px;
  line-height:1.55;
  position:relative;
  max-width:480px;
}
.card-body{ padding:32px 36px 34px; }

.content-section{
  max-width:660px;
  width:100%;
  margin:20px auto 0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px 32px;
  position:relative;
  transition:box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.content-section:first-child{ margin-top:0; }
.content-section h2{
  font-weight:800;
  font-size:20px;
  color:var(--ink);
  margin:0 0 10px;
  letter-spacing:-0.02em;
}
.content-section h2:not(:first-child){ margin-top:28px; }
.content-section p{
  font-size:14px;
  line-height:1.7;
  color:var(--slate);
  margin:0 0 12px;
}
.content-section ol, .content-section ul{
  font-size:14px;
  line-height:1.7;
  color:var(--slate);
  margin:0 0 12px;
  padding-left:20px;
}
.content-section li{ margin-bottom:6px; }

.faq-item{
  border-top:1px solid var(--line-soft);
  padding:17px 0;
  transition:padding-left 0.2s ease;
}
.faq-item:hover{ padding-left:4px; }
.faq-item:first-of-type{ border-top:none; padding-top:4px; }
.faq-item:first-of-type:hover{ padding-left:4px; }
.faq-item h3{
  font-size:14.5px;
  font-weight:700;
  color:var(--ink);
  margin:0 0 7px;
  letter-spacing:-0.01em;
}
.faq-item p{ margin:0; font-size:13.5px; line-height:1.6; color:var(--slate); }

/* ---------- Tool cards ---------- */
.tool-card{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px 22px;
  margin-bottom:12px;
  background:linear-gradient(180deg, #FFFFFF 0%, #FBFCFE 100%);
  position:relative;
  overflow:hidden;
  transition:box-shadow 0.28s var(--ease), border-color 0.28s var(--ease), transform 0.28s var(--ease);
}
.tool-card::before{
  content:"";
  position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg, var(--brand-blue), var(--accent));
  transform:scaleX(0); transform-origin:left;
  transition:transform 0.35s var(--ease);
}
.tool-card:hover::before{ transform:scaleX(1); }
.tool-card:hover{
  box-shadow:var(--shadow-lg);
  border-color:#CBD9EA;
  transform:translateY(-3px);
}
.tool-card:last-child{ margin-bottom:0; }
.tool-card h3{
  font-size:16px;
  font-weight:800;
  color:var(--ink);
  margin:0 0 6px;
  letter-spacing:-0.01em;
}
.tool-card p{ font-size:13px; line-height:1.6; color:var(--slate); margin:0 0 10px; }
.tool-card a{ font-weight:700; text-decoration:none; font-size:13px; }
.tool-card a:hover{ text-decoration:underline; }

.status-pill{
  display:inline-block;
  font-size:10px;
  font-weight:700;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:4px 11px;
  border-radius:var(--r-pill);
  background:var(--accent-soft);
  color:var(--accent-deep);
}
.status-pill.planned{ background:var(--blue-soft); color:var(--brand-blue-deep); }
.status-pill.live{ background:var(--accent-soft); color:var(--accent-deep); position:relative; }
.status-pill.live::before{
  content:"";
  display:inline-block;
  width:6px; height:6px;
  border-radius:50%;
  background:var(--accent);
  margin-right:5px;
  animation:pulse-dot 1.8s ease-in-out infinite;
}
@keyframes pulse-dot{
  0%, 100%{ box-shadow:0 0 0 0 rgba(15,175,127,0.5); }
  50%{ box-shadow:0 0 0 5px rgba(15,175,127,0); }
}
@media (prefers-reduced-motion: reduce){ .status-pill.live::before{ animation:none; } }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  position:relative;
  overflow:hidden;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:0.01em;
  background:linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-blue-deep) 100%);
  color:#FFFFFF;
  border:none;
  padding:12px 22px;
  border-radius:var(--r-pill);
  cursor:pointer;
  text-decoration:none;
  box-shadow:0 4px 14px -4px rgba(20,118,224,0.5);
  transition:box-shadow 0.2s ease, transform 0.2s var(--ease);
}
.btn::after{
  content:"";
  position:absolute;
  top:0; left:-60%;
  width:40%; height:100%;
  background:linear-gradient(120deg, transparent, rgba(255,255,255,0.4), transparent);
  transform:skewX(-20deg);
  transition:left 0.55s ease;
}
.btn:hover::after{ left:130%; }
.btn:hover{ box-shadow:0 8px 22px -4px rgba(20,118,224,0.6); transform:translateY(-2px); color:#FFFFFF; }
.btn:active{ transform:translateY(0); }

.btn-secondary{
  background:#FFFFFF;
  color:var(--ink);
  border:1.5px solid var(--line);
  box-shadow:none;
}
.btn-secondary:hover{ background:var(--line-soft); color:var(--ink); box-shadow:none; border-color:#CBD5E1; }

/* ---------- Calculator result rows ---------- */
.result-row{
  display:flex; justify-content:space-between; align-items:flex-start; gap:16px;
  padding:10px 0; border-bottom:1px dashed var(--line); font-size:13.5px;
}
.result-row:last-child{ border-bottom:none; }
.result-row .result-label{ color:var(--slate); }
.result-row .result-value{ font-weight:700; color:var(--ink); text-align:right; font-family:'IBM Plex Mono', monospace; }
.result-row.result-total{ border-top:2px solid var(--navy); border-bottom:none; margin-top:6px; padding-top:14px; }
.result-row.result-total .result-label, .result-row.result-total .result-value{ font-size:17px; color:var(--ink); }

/* ---------- Alert boxes ---------- */
.alert-box{ border-radius:var(--r-md); padding:14px 17px; margin-top:16px; font-size:12.5px; line-height:1.6; }
.alert-box strong{ color:inherit; }
.alert-notice{ background:var(--line-soft); color:var(--slate); border:1px solid var(--line); }
.alert-warning{ background:#FFF6F0; color:#9A4A1F; border:1px solid #F2CBA6; }
.alert-info{ background:var(--accent-soft); color:#0C6B4C; border:1px solid #B7E4D3; }
.alert-success{ background:#EFFBF3; color:#1B6E42; border:1px solid #BFE8CE; }
.hidden{ display:none !important; }

.formula-box{
  padding:12px 15px; background:var(--line-soft); border:1px dashed var(--line); border-radius:var(--r-sm);
  margin-top:12px; font-family:'IBM Plex Mono', monospace; font-size:12.5px; color:var(--ink); overflow-x:auto;
}

.mini-stat-grid{ display:grid; grid-template-columns:repeat(3, 1fr); gap:10px; margin-top:14px; }
@media (max-width: 480px){ .mini-stat-grid{ grid-template-columns:1fr; } }
.mini-stat-grid .mini-stat{ padding:13px; background:var(--line-soft); border:1px solid var(--line); border-radius:var(--r-sm); }
.mini-stat-grid .mini-stat .label{ color:var(--slate-soft); font-size:11px; }
.mini-stat-grid .mini-stat .value{ margin-top:4px; font-size:15px; font-weight:700; color:var(--ink); font-family:'IBM Plex Mono', monospace; }

.data-table-wrap{ overflow-x:auto; }
table.data-table{ width:100%; border-collapse:collapse; margin-top:10px; font-size:13px; }
table.data-table th, table.data-table td{ text-align:left; padding:10px 11px; border-bottom:1px solid var(--line); vertical-align:top; }
table.data-table th{ font-family:'IBM Plex Mono', monospace; font-size:10.5px; text-transform:uppercase; letter-spacing:0.05em; color:var(--slate-soft); background:var(--line-soft); }

.field-group{ border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden; margin-top:14px; }
.field-group-title{ padding:12px 15px; background:var(--line-soft); border-bottom:1px solid var(--line); font-size:13px; font-weight:700; color:var(--ink); }
.field-group-body{ padding:17px; }

.tabs{ display:flex; justify-content:center; gap:8px; flex-wrap:wrap; margin:22px 0 0; }
.tab-button{
  border:1.5px solid var(--line); background:#FFFFFF; color:var(--slate);
  border-radius:var(--r-pill); padding:10px 20px; font-size:13.5px; font-weight:700; cursor:pointer;
  font-family:'Inter', sans-serif; transition:background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.tab-button:hover{ border-color:#CBD5E1; }
.tab-button.active{ background:var(--navy); color:#FFFFFF; border-color:var(--navy); }
.calc-tool{ display:none; }
.calc-tool.active{ display:block; animation:fade-in-up 0.4s var(--ease); }
@keyframes fade-in-up{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:translateY(0); } }

/* ============================================================
   FORMS
   ============================================================ */
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:12.5px; font-weight:700; letter-spacing:0.01em; color:var(--slate); margin-bottom:8px; }
.field input, .field select, .field textarea{
  width:100%;
  font-size:14.5px;
  padding:12px 14px;
  border:1.5px solid var(--line);
  background:#FCFDFE;
  color:var(--ink);
  border-radius:var(--r-sm);
  font-family:'Inter', sans-serif;
  transition:border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.field textarea{ resize:vertical; min-height:110px; }
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--brand-blue); box-shadow:0 0 0 4px var(--blue-soft); background:#FFFFFF;
}
.field input:hover, .field select:hover, .field textarea:hover{ border-color:#CBD5E1; }
.field-hint{ font-size:12px; color:var(--slate-soft); margin-top:7px; }
.form-msg{ font-size:12.5px; margin-top:12px; }
.form-msg.ok{ color:var(--accent-deep); }
.form-msg.err{ color:var(--danger); }

/* ---------- Ad slots ---------- */
.ad-slot{
  width:300px; flex-shrink:0; min-height:600px;
  border:1px dashed var(--line); border-radius:var(--r-md); background:#FBFCFE;
  display:flex; align-items:center; justify-content:center; text-align:center; padding:16px;
}
.ad-slot span{ font-size:11px; letter-spacing:0.05em; text-transform:uppercase; color:var(--slate-soft); }
.ad-slot-bottom{
  max-width:660px; width:100%; min-height:100px; margin:20px auto 0;
  border:1px dashed var(--line); border-radius:var(--r-md); background:#FBFCFE;
  display:flex; align-items:center; justify-content:center; text-align:center; padding:12px;
}
.ad-slot-bottom span{ font-size:11px; letter-spacing:0.05em; text-transform:uppercase; color:var(--slate-soft); }
@media (max-width: 1040px){ .ad-slot{ display:none; } }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  background:var(--navy-deep);
  margin-top:64px;
  padding:40px 20px 28px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute; top:0; left:0; width:100%; height:2px;
  background:linear-gradient(90deg, var(--brand-blue), var(--accent) 70%);
  opacity:0.7;
}
.footer-inner{
  max-width:1120px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
}
.footer-inner p{ font-size:12px; color:#7C90A9; margin:0; }
.footer-links{ display:flex; gap:20px; }
.footer-links a{ font-size:12px; color:#B7C6DB; text-decoration:none; transition:color 0.15s ease; }
.footer-links a:hover{ color:#FFFFFF; }

/* ---------- Community / posts ---------- */
.post-card{
  border:1px solid var(--line); border-radius:var(--r-md); padding:18px 20px; margin-bottom:12px;
  background:#FCFDFE; transition:box-shadow 0.2s ease, border-color 0.2s ease;
}
.post-card:hover{ box-shadow:var(--shadow-md); border-color:#CBD9EA; }
.post-card:last-child{ margin-bottom:0; }