/* =====================================================================
   Dhananjay Yadav Ebook Library — main.css
   Design system: deep navy + white + professional green + gold accents.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=Inter:wght@400;500;600;700&display=swap');
/* NOTE: the @import above is a fallback only — header.php also links the
   font stylesheet directly in <head>, which loads in parallel and is what
   actually renders in production. Some older rendering/preview tools skip
   @import on failure; the <link> tag does not depend on it. */

:root {
  /* Brand palette */
  --navy-950: #08152b;
  --navy-900: #0c1f3d;
  --navy-800: #12294f;
  --navy-700: #1b3a68;
  --navy-100: #e7ecf5;
  --white:    #ffffff;
  --green:    #1c8a52;
  --green-dark: #146a3f;
  --gold:     #c9a227;
  --gold-dark:#a9861c;
  --gray-50:  #f7f8fa;
  --gray-100: #eef0f4;
  --gray-300: #cbd2dd;
  --gray-500: #7d8798;
  --gray-700: #47505f;
  --gray-900: #1c222c;
  --danger:   #c23b3b;

  /* Semantic (light mode default) */
  --bg: var(--white);
  --bg-subtle: var(--gray-50);
  --surface: var(--white);
  --text: var(--gray-900);
  --text-muted: var(--gray-500);
  --border: var(--gray-100);
  --brand: var(--navy-900);
  --accent: var(--gold);
  --cta: var(--green);
  --cta-hover: var(--green-dark);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(12,31,61,0.08);
  --shadow-md: 0 8px 24px rgba(12,31,61,0.10);
  --shadow-lg: 0 20px 48px rgba(12,31,61,0.16);
  --container: 1180px;
}

[data-theme="dark"] {
  --bg: #0a1424;
  --bg-subtle: #0d1a30;
  --surface: #11213c;
  --text: #eef1f6;
  --text-muted: #9aa7bd;
  --border: #1c2c4a;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a1424;
    --bg-subtle: #0d1a30;
    --surface: #11213c;
    --text: #eef1f6;
    --text-muted: #9aa7bd;
    --border: #1c2c4a;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { font-family: 'Sora', 'Inter', sans-serif; color: var(--text); line-height: 1.2; margin: 0 0 .5em; }
p { margin: 0 0 1em; color: var(--text); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Focus visibility for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1.5px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  font-family: 'Inter', sans-serif;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--cta); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--cta-hover); box-shadow: var(--shadow-md); }
.btn-secondary { background: transparent; color: var(--brand); border-color: var(--navy-700); }
.btn-secondary:hover { background: var(--navy-100); }
[data-theme="dark"] .btn-secondary, .dark-ctx .btn-secondary { color: var(--white); border-color: var(--gray-500); }
/* The header bar is always dark navy regardless of site theme, so its
   Login button needs light text unconditionally — not tied to data-theme. */
.site-header .btn-secondary { color: #fff; border-color: rgba(255,255,255,0.4); }
.site-header .btn-secondary:hover { background: rgba(255,255,255,0.08); }
.btn-gold { background: var(--gold); color: var(--navy-950); }
.btn-gold:hover { background: var(--gold-dark); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(8,21,43,0.96); backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-family: 'Sora', sans-serif; font-weight: 700; font-size: 19px; }
.brand .brand-mark { width: 34px; height: 34px; border-radius: 8px; background: linear-gradient(135deg, var(--gold), var(--gold-dark)); display: flex; align-items: center; justify-content: center; color: var(--navy-950); font-weight: 800; }
.brand .tagline { display:block; font-family:'Inter',sans-serif; font-weight:500; font-size:10.5px; letter-spacing:2px; color: var(--gold); margin-top:1px; }
.nav-main { display: flex; align-items: center; gap: 30px; }
.nav-main a { color: rgba(255,255,255,0.82); font-size: 14.5px; font-weight: 500; transition: color .15s; }
.nav-main a:hover { color: #fff; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .btn { padding: 10px 20px; font-size: 14px; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; }
.nav-mobile-auth { display: none; }

@media (max-width: 900px) {
  .nav-main { position: fixed; top: 76px; left: 0; right: 0; bottom: 0; background: var(--navy-950); flex-direction: column; align-items: flex-start; padding: 28px 24px; gap: 22px; transform: translateX(100%); transition: transform .25s ease; overflow-y:auto; }
  .nav-main.open { transform: translateX(0); }
  .nav-main a { font-size: 18px; }
  .nav-toggle { display: block; }
  .nav-mobile-auth { display: flex; gap: 12px; margin-top: 10px; }
  .nav-actions .btn { display: none; }
}

/* ---------- Hero ---------- */
.hero { background: radial-gradient(1200px 500px at 80% -10%, rgba(201,162,39,0.18), transparent), linear-gradient(180deg, var(--navy-950), var(--navy-900)); color: #fff; padding: 88px 0 100px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-kicker { display:inline-flex; align-items:center; gap:8px; background: rgba(201,162,39,0.14); border: 1px solid rgba(201,162,39,0.35); color: var(--gold); font-size: 13px; font-weight: 600; padding: 7px 16px; border-radius: 999px; margin-bottom: 22px; }
.hero h1 { font-size: clamp(32px, 4.4vw, 52px); font-weight: 800; color: #fff; letter-spacing: -0.5px; }
.hero p.lead { font-size: 18px; color: rgba(255,255,255,0.78); max-width: 560px; }
.hero-ctas { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-stack { position: relative; display: flex; justify-content: center; }
.hero-book-card { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 22px; width: 300px; transform: rotate(-4deg); }
.hero-book-card .cover-thumb { border-radius: var(--radius-sm); height: 160px; background: linear-gradient(135deg, var(--navy-800), var(--navy-950)); display:flex; align-items:center; justify-content:center; color: var(--gold); font-family:'Sora'; font-weight:700; text-align:center; padding: 16px; }
.hero-float-card { position: absolute; background: var(--surface); border-radius: var(--radius-md); box-shadow: var(--shadow-md); padding: 14px 18px; font-size: 13px; font-weight: 600; color: var(--navy-900); display:flex; align-items:center; gap:10px; }
.hero-float-1 { top: -14px; right: -10px; }
.hero-float-2 { bottom: 6px; left: -30px; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } .hero-visual { order: -1; } .hero-book-card { margin: 0 auto; transform: none; } }

/* ---------- Sections ---------- */
.section { padding: 76px 0; }
.section-subtle { background: var(--bg-subtle); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.eyebrow { color: var(--green); font-weight: 700; font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 10px; display:block; }
.section-head h2 { font-size: clamp(26px, 3vw, 36px); }
.section-head p { color: var(--text-muted); font-size: 16px; }

/* ---------- Category chips ---------- */
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px,1fr)); gap: 14px; }
.category-chip { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px 16px; text-align: center; box-shadow: var(--shadow-sm); transition: transform .15s, box-shadow .15s; }
.category-chip:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.category-chip .icon { width: 42px; height: 42px; border-radius: 10px; background: var(--navy-100); color: var(--navy-900); display:flex; align-items:center; justify-content:center; margin: 0 auto 10px; font-weight: 700; }
[data-theme="dark"] .category-chip .icon { background: var(--navy-700); color: #fff; }
.category-chip .name { font-weight: 600; font-size: 14.5px; }
.category-chip .count { font-size: 12.5px; color: var(--text-muted); margin-top: 2px; }

/* ---------- Ebook cards ---------- */
.ebook-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 26px; }
.ebook-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .18s ease, box-shadow .18s ease; display:flex; flex-direction:column; }
.ebook-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.ebook-cover { position: relative; aspect-ratio: 3/4; background: linear-gradient(135deg, var(--navy-800), var(--navy-950)); display:flex; align-items:center; justify-content:center; padding: 22px; text-align:center; }
.ebook-cover .cover-title { color: #fff; font-family:'Sora'; font-weight:700; font-size: 18px; }
.ebook-cover .cover-sub { color: var(--gold); font-size: 11px; margin-top: 8px; letter-spacing: .5px;}
.badge { position:absolute; top: 12px; left: 12px; padding: 5px 12px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: .3px; }
.badge-free { background: var(--green); color: #fff; }
.badge-promo { background: var(--gold); color: var(--navy-950); }
.badge-paid { background: var(--navy-800); color: #fff; }
.ebook-body { padding: 18px 20px 20px; display:flex; flex-direction:column; gap: 8px; flex: 1; }
.ebook-cat { font-size: 12px; color: var(--green); font-weight: 700; text-transform: uppercase; letter-spacing: .4px; }
.ebook-title { font-family:'Sora'; font-weight: 700; font-size: 17px; }
.ebook-author { font-size: 13px; color: var(--text-muted); }
.ebook-desc { font-size: 13.5px; color: var(--text-muted); flex: 1; }
.ebook-meta { display: flex; align-items:center; gap: 10px; font-size: 12.5px; color: var(--text-muted); margin-top: 4px; }
.ebook-meta .dot { width:3px; height:3px; border-radius:50%; background: var(--text-muted); }
.ebook-progress { height: 6px; background: var(--border); border-radius: 999px; overflow: hidden; margin-top: 6px; }
.ebook-progress > span { display:block; height:100%; background: var(--green); }
.ebook-footer { display:flex; align-items:center; justify-content: space-between; margin-top: 10px; }
.price { font-weight: 700; font-family:'Sora'; }
.price .was { text-decoration: line-through; color: var(--text-muted); font-weight:400; font-size: 12.5px; margin-right: 6px; }

/* ---------- Filters / search bar ---------- */
.library-toolbar { display:flex; flex-wrap:wrap; gap: 12px; align-items:center; justify-content:space-between; margin-bottom: 30px; }
.search-box { display:flex; align-items:center; gap: 10px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 11px 18px; flex: 1; min-width: 240px; max-width: 420px; }
.search-box input { border: none; outline: none; background: transparent; width: 100%; font-size: 14.5px; color: var(--text); font-family:'Inter'; }
.filter-pills { display:flex; flex-wrap:wrap; gap: 8px; }
.filter-pill { padding: 9px 16px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); font-size: 13.5px; font-weight: 600; color: var(--text-muted); cursor:pointer; }
.filter-pill.active { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }
select.sort-select { padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font-family:'Inter'; font-size: 13.5px; }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 26px 22px; box-shadow: var(--shadow-sm); }
.step-num { width: 34px; height:34px; border-radius: 50%; background: var(--navy-900); color: var(--gold); display:flex; align-items:center; justify-content:center; font-weight:700; font-family:'Sora'; margin-bottom: 14px; }
.step-card h4 { font-size: 15.5px; }
.step-card p { font-size: 13.5px; color: var(--text-muted); margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ---------- Feature / benefit grid ---------- */
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.benefit-card { padding: 8px; }
.benefit-icon { width: 46px; height: 46px; border-radius: 12px; background: var(--navy-100); color: var(--navy-900); display:flex; align-items:center; justify-content:center; margin-bottom: 16px; font-weight:800; }
[data-theme="dark"] .benefit-icon { background: var(--navy-700); color:#fff; }
.benefit-card h3 { font-size: 17px; }
.benefit-card p { color: var(--text-muted); font-size: 14px; }
@media (max-width: 900px) { .benefit-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .benefit-grid { grid-template-columns: 1fr; } }

/* ---------- Dashboard preview mock ---------- */
.preview-panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 26px; }
.preview-kpis { display:grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-bottom: 20px; }
.kpi { background: var(--bg-subtle); border-radius: var(--radius-md); padding: 16px; }
.kpi .num { font-family:'Sora'; font-weight:800; font-size: 24px; color: var(--navy-900); }
[data-theme="dark"] .kpi .num { color: #fff; }
.kpi .label { font-size: 12px; color: var(--text-muted); }
@media (max-width: 700px) { .preview-kpis { grid-template-columns: repeat(2,1fr); } }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; }
.faq-q { display:flex; align-items:center; justify-content:space-between; cursor:pointer; font-weight: 600; font-size: 15.5px; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; color: var(--text-muted); font-size: 14.5px; }
.faq-item.open .faq-a { max-height: 300px; margin-top: 10px; }
.faq-q .chev { transition: transform .2s; color: var(--text-muted); }
.faq-item.open .faq-q .chev { transform: rotate(180deg); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-950); color: rgba(255,255,255,0.72); padding: 60px 0 26px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 34px; }
.footer-grid h5 { color: #fff; font-size: 13.5px; text-transform: uppercase; letter-spacing: .6px; margin-bottom: 14px; }
.footer-grid a { display:block; color: rgba(255,255,255,0.68); font-size: 14px; padding: 5px 0; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px; padding-top: 22px; display:flex; justify-content:space-between; flex-wrap:wrap; gap: 10px; font-size: 12.5px; color: rgba(255,255,255,0.5); }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Forms (auth pages, contact, etc.) ---------- */
.auth-shell { min-height: calc(100vh - 76px); display:flex; align-items:center; justify-content:center; background: var(--bg-subtle); padding: 50px 20px; }
.auth-card { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 40px; width: 100%; max-width: 420px; border: 1px solid var(--border); }
.form-group { margin-bottom: 18px; }
.form-group label { display:block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1.5px solid var(--border);
  background: var(--bg); color: var(--text); font-family:'Inter'; font-size: 14.5px;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--navy-700); }
.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 5px; }
.form-error { font-size: 12.5px; color: var(--danger); margin-top: 5px; }
.alert { padding: 13px 16px; border-radius: 10px; font-size: 13.5px; margin-bottom: 18px; }
.alert-success { background: rgba(28,138,82,0.12); color: var(--green-dark); }
.alert-error { background: rgba(194,59,59,0.1); color: var(--danger); }
.alert-notice { background: var(--navy-100); color: var(--navy-900); }

/* ---------- Empty states ---------- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 34px; margin-bottom: 12px; }
.empty-state h4 { color: var(--text); }

/* ---------- Error pages ---------- */
.error-body { display:flex; align-items:center; justify-content:center; min-height:100vh; background: var(--bg-subtle); font-family:'Inter',sans-serif; margin:0; }
.error-wrap { text-align:center; max-width:420px; padding: 40px; }
.error-code { font-family:'Sora',sans-serif; font-weight:800; font-size: 64px; color: var(--navy-900); }

/* ---------- Skeleton loading ---------- */
.skeleton { background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-300) 37%, var(--gray-100) 63%); background-size: 400% 100%; animation: skeleton-loading 1.4s ease infinite; border-radius: 8px; }
@keyframes skeleton-loading { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* Utility */
.text-center { text-align:center; }
.mt-0{margin-top:0} .mb-0{margin-bottom:0}
.visually-hidden { position:absolute; width:1px;height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; }
