/* ============================================================
   PowerHouse Knowledge Library — shared stylesheet
   © 2026 ActivPower Inc. All rights reserved.
   Palette inherited from the Powerhouse Membership Dashboard.
   ============================================================ */
:root{
  --teal:#137D90; --brightTeal:#1AA0B5; --cyan:#3FC3D6; --bolt:#7FE0EA; --deep:#0D5F6E;
  --navy:#16283B; --ink:#263646; --page:#eef2f5; --white:#fff; --line:#e2e8ee; --mute:#5f7183;
  --ok:#1c8a53; --ok-soft:#e6f4ec; --warn:#B7791F; --warn-soft:#fbf3e2; --alert:#c0392b; --alert-soft:#fbeae7;
  --gold:#d0aa47; --gold-deep:#a9801f;
  --radius:14px; --shadow:0 6px 20px rgba(20,32,52,.08); --shadowLg:0 22px 60px rgba(16,32,56,.24);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--page);color:var(--ink);
  font-family:"Inter","Segoe UI",system-ui,Arial,sans-serif;font-size:15px;line-height:1.5;
  -webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0;color:var(--navy);line-height:1.18}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
.muted{color:var(--mute)} .small{font-size:.82rem}

/* ---------- masthead ---------- */
.apbar{background:linear-gradient(100deg,#122032,#16283b 55%,#0f3a45);color:#fff}
.apbar .wrap{display:flex;align-items:center;gap:18px;min-height:68px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.logo{display:flex;align-items:center;gap:11px}
.logo svg{width:38px;height:38px;flex:0 0 auto}
.logo .wm{font-weight:800;font-size:1.25rem;line-height:1;display:block}
.logo .wm b{color:#fff}.logo .wm .h{color:var(--cyan)}
.logo .tag{display:block;font-size:.54rem;letter-spacing:.2em;color:#7fb8c4;font-weight:700;margin-top:3px}
.apnav{display:flex;gap:2px;margin-left:6px;flex-wrap:wrap}
.apnav a{color:#c6d4de;font-weight:600;font-size:.86rem;padding:8px 11px;border-radius:8px;text-decoration:none}
.apnav a:hover{color:#fff;background:rgba(255,255,255,.08);text-decoration:none}
.apnav a.on{color:#fff;background:rgba(127,224,234,.16)}
.apright{margin-left:auto;display:flex;align-items:center;gap:9px}
.chip{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:6px 12px;font-size:.8rem;font-weight:600;color:#eaf2f6}
.chip b{color:#fff}
.tier{font-size:.6rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;padding:3px 9px;border-radius:999px}
.tier.free{background:var(--teal);color:#fff}
.tier.premium{background:linear-gradient(180deg,#7fe0ea,#3fc3d6);color:#0c3540}
.avatar{width:34px;height:34px;border-radius:50%;background:#0e7c86;display:flex;align-items:center;
  justify-content:center;font-weight:800;font-size:.85rem;color:#fff}
.apbar .btn.ghost{color:#eaf2f6;border-color:rgba(255,255,255,.34);background:transparent}
.apbar .btn.ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- generic ---------- */
.page{padding:26px 0 64px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px 22px}
.eyebrow{font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:var(--teal)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--teal);color:#fff;
  border:0;border-radius:10px;padding:11px 18px;font:inherit;font-weight:800;font-size:.9rem;cursor:pointer;transition:.15s}
.btn:hover{background:var(--deep);text-decoration:none;color:#fff}
.btn.block{width:100%}
.btn.cyan{background:linear-gradient(180deg,#1AA0B5,#0D5F6E)}
.btn.gold{background:linear-gradient(180deg,var(--gold),var(--gold-deep))}
.btn.ghost{background:transparent;color:var(--teal);border:1.5px solid var(--line)}
.btn.ghost:hover{background:#eef7f9;color:var(--deep)}
.btn.sm{padding:8px 13px;font-size:.82rem}
.btn.light{background:#fff;color:var(--navy)}
.btn.light:hover{background:#eaf2f6;color:var(--navy)}

/* ---------- hero ---------- */
.hero{background:linear-gradient(120deg,#16283b,#137d90);color:#fff;border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow)}
.hero.premium{background:linear-gradient(120deg,#12222f,#0d5f6e 55%,#a9801f)}
.hero h1{color:#fff;font-size:1.75rem;margin:6px 0 8px}
.hero p{margin:0;color:#d7ebf0;max-width:760px}
.hero .ey{font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;color:var(--bolt);font-weight:800}
.statrow{display:flex;gap:26px;margin-top:16px;flex-wrap:wrap}
.statrow .s b{display:block;font-size:1.5rem;font-weight:800;color:#fff;line-height:1.1}
.statrow .s span{font-size:.76rem;color:#bfe0e8}

/* ---------- section cards ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:22px}
@media(max-width:860px){.grid2{grid-template-columns:1fr}}
.sec{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px 24px;color:inherit;transition:.15s}
.sec:hover{transform:translateY(-2px);box-shadow:var(--shadowLg);text-decoration:none}
.sec h3{font-size:1.2rem;margin:8px 0 6px}
.sec .n{font-size:2rem;font-weight:800;color:var(--teal);line-height:1}
.sec.gold .n{color:var(--gold-deep)}

/* ---------- toolbar ---------- */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:22px 0 14px}
.toolbar input[type=search]{flex:1;min-width:240px;border:1.5px solid var(--line);border-radius:10px;
  padding:11px 14px;font:inherit;background:#fff}
.toolbar input[type=search]:focus{outline:none;border-color:var(--brightTeal)}
.toolbar select{border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;font:inherit;background:#fff}
.count{font-size:.85rem;color:var(--mute);font-weight:600}

/* ---------- article list ---------- */
.catblock{margin-top:26px}
.cathead{display:flex;align-items:baseline;gap:10px;margin-bottom:10px;
  border-bottom:2px solid var(--line);padding-bottom:8px}
.cathead h2{font-size:1.05rem}
.cathead .c{font-size:.78rem;color:var(--mute);font-weight:700}
.list{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:12px}
.item{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:13px 15px;transition:.13s}
.item:hover{border-color:var(--brightTeal);box-shadow:var(--shadow);text-decoration:none}
.item .ic{width:34px;height:40px;flex:0 0 auto;border-radius:5px;background:#e6f3f5;border:1px solid #cfe6ea;
  display:flex;align-items:center;justify-content:center;font-size:.56rem;font-weight:800;color:var(--teal)}
.item.premium .ic{background:#fbf3e2;border-color:#eddfba;color:#8a5a12}
.item .m{min-width:0}
.item .m b{display:block;font-size:.92rem;color:var(--navy);line-height:1.3}
.item .m span{display:block;font-size:.78rem;color:var(--mute);margin-top:3px;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.item .m .meta{margin-top:5px;font-size:.7rem;color:var(--mute);font-weight:700;letter-spacing:.02em}
.empty{padding:40px;text-align:center;color:var(--mute)}

/* ---------- gate / notice ---------- */
.gate{background:var(--warn-soft);border:1px solid #eddfba;border-radius:12px;padding:16px 18px;margin-top:18px}
.gate b{color:#8a5a12}

/* ---------- login ---------- */
.loginwrap{min-height:calc(100vh - 68px);display:grid;grid-template-columns:1.05fr .95fr}
@media(max-width:900px){.loginwrap{grid-template-columns:1fr}}
.loginleft{background:linear-gradient(150deg,#12202f,#0f3a45 60%,#0d5f6e);color:#fff;padding:52px 46px;
  display:flex;flex-direction:column;justify-content:center}
.loginleft h1{color:#fff;font-size:2.05rem;margin:10px 0 12px;max-width:15ch}
.loginleft p{color:#cfe6ec;max-width:46ch;margin:0 0 22px}
.perks{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.perks li{display:flex;gap:10px;align-items:flex-start;color:#e6f4f7;font-size:.92rem}
.perks .k{color:var(--bolt);font-weight:800}
.loginright{display:flex;align-items:center;justify-content:center;padding:46px 30px;background:var(--page)}
.loginbox{width:100%;max-width:430px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadowLg);padding:30px 30px 26px}
.loginbox h2{font-size:1.3rem;margin-bottom:4px}
.field{margin-top:16px}
.field label{display:block;font-size:.78rem;font-weight:800;color:var(--navy);
  text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}
.field input{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:12px 13px;font:inherit;background:#fff}
.field input:focus{outline:none;border-color:var(--brightTeal);box-shadow:0 0 0 3px rgba(63,195,214,.18)}
.field .hint{font-size:.74rem;color:var(--mute);margin-top:5px}
.rowbetween{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--mute);font-size:.76rem;font-weight:700}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.err{background:var(--alert-soft);border:1px solid #f0c3bb;color:#8f2c20;border-radius:10px;
  padding:10px 12px;font-size:.84rem;margin-top:14px;display:none}
.err.show{display:block}
.demo{margin-top:18px;border-top:1px dashed var(--line);padding-top:14px}
.demo .t{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.demo .btns{display:flex;gap:8px;margin-top:9px;flex-wrap:wrap}

/* ---------- footer / IP notice ---------- */
.sitefoot{border-top:1px solid var(--line);background:#fff;margin-top:40px}
.sitefoot .wrap{padding:22px;display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap}
.sitefoot svg{width:30px;height:30px;flex:0 0 auto}
.sitefoot .t{font-size:.78rem;color:var(--mute);line-height:1.65;max-width:900px}
.sitefoot .t b{color:var(--navy)}
.sitefoot .t .ai{color:var(--teal);font-weight:700}
@media print{.apbar,.toolbar,.sitefoot{display:none}}