/*
  Memeistry — Public Site (Login / Create Account + Info Pages)
  -----------------------------------------------------------
  Goals:
  - Responsive (mobile/tablet/desktop)
  - Accessible focus states + semantic structure
  - “Tinder-like” top nav affordances (Language, Learn, Safety, Support) without copying brand assets
  - Supports login.php (mode=login|signup) while keeping existing server-side logic intact
*/

:root{
  --bg0:#0a0b14;
  --bg1:#0f1024;
  --card: rgba(255,255,255,0.06);
  --card2: rgba(255,255,255,0.08);
  --stroke: rgba(255,255,255,0.14);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.72);
  --muted2: rgba(255,255,255,0.55);
  --shadow: 0 22px 60px rgba(0,0,0,0.45);
  --shadow2: 0 10px 28px rgba(0,0,0,0.35);
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 14px;

  --accentA:#ff3d8f;
  --accentB:#ff7a59;
  --accentSoft: rgba(255, 61, 143, 0.20);

  --okBg: rgba(0, 200, 120, 0.14);
  --okStroke: rgba(0, 200, 120, 0.30);
  --errBg: rgba(255, 80, 90, 0.14);
  --errStroke: rgba(255, 80, 90, 0.30);

  --container: 1120px;
  --headerH: 72px;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin:0;
  color: var(--text);
  background:
    radial-gradient(900px 520px at 12% 6%, rgba(255, 61, 143, 0.38), transparent 62%),
    radial-gradient(900px 520px at 85% 18%, rgba(255, 122, 89, 0.22), transparent 62%),
    radial-gradient(900px 620px at 50% 110%, rgba(124, 92, 255, 0.18), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0)),
    linear-gradient(180deg, var(--bg1), var(--bg0));
  background-attachment: fixed;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

a{ color: inherit; text-decoration: none; }

.skip-link{
  position:absolute;
  left:-999px;
  top: 8px;
  padding:10px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  color: var(--text);
  z-index: 99999;
}
.skip-link:focus{ left: 12px; }

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 18px;
}

/* ---------------- Header ---------------- */
.site-header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--headerH);
  z-index: 100;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(10,11,20,0.86), rgba(10,11,20,0.58));
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.header-row{
  height: var(--headerH);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.brand-mark{
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: radial-gradient(circle at 25% 25%, rgba(255,255,255,0.90), rgba(255,255,255,0) 52%),
              linear-gradient(135deg, var(--accentA), var(--accentB));
  box-shadow: 0 12px 34px rgba(255, 61, 143, 0.22);
  display:flex;
  align-items:center;
  justify-content:center;
  flex: 0 0 auto;
}
.brand-mark span{
  font-weight: 900;
  color: rgba(0,0,0,0.72);
  font-size: 15px;
}
.brand-text{
  display:flex;
  flex-direction: column;
  line-height: 1.05;
  min-width: 0;
}
.brand-text strong{
  font-size: 15px;
  letter-spacing: 0.06em;
}
.brand-text small{
  color: var(--muted2);
  font-weight: 650;
  font-size: 11px;
}

.nav{
  display:flex;
  align-items:center;
  gap: 10px;
}
.nav a,
.nav summary{
  font-size: 13px;
  color: var(--muted);
  font-weight: 650;
  padding: 10px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  user-select: none;
}
.nav a:hover,
.nav summary:hover{
  color: var(--text);
  border-color: rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
}
.nav a[aria-current="page"]{
  color: var(--text);
  border-color: rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
}

.header-right{
  display:flex;
  align-items:center;
  gap: 10px;
}

.btn{
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.18s ease, border-color 0.18s ease;
}
.btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.22); }
.btn:active{ transform: translateY(0px); }
.btn-primary{
  border: none;
  background: linear-gradient(135deg, var(--accentA), var(--accentB));
  color: rgba(0,0,0,0.78);
  box-shadow: 0 14px 40px rgba(255, 61, 143, 0.18);
}
.btn-primary:hover{ filter: brightness(1.02); }

/* Language menu (details/summary) */
.lang{
  position: relative;
}
.lang details{ position: relative; }
.lang summary{ list-style: none; cursor: pointer; }
.lang summary::-webkit-details-marker{ display: none; }
.lang-menu{
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: min(320px, 90vw);
  background: rgba(10,11,20,0.96);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 16px;
  box-shadow: var(--shadow2);
  overflow: hidden;
  padding: 10px;
}
.lang-menu a{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
}
.lang-menu a:hover{
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.12);
  color: var(--text);
}
.pill{
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--muted);
}

/* Mobile nav */
.burger{
  display:none;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  cursor: pointer;
}
.burger:focus-visible{ outline: 3px solid rgba(255,255,255,0.28); outline-offset: 2px; }
.mobile-drawer{
  display:none;
  position: fixed;
  top: var(--headerH);
  left: 0;
  right: 0;
  background: rgba(10,11,20,0.96);
  border-bottom: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(18px);
  z-index: 95;
}
.mobile-drawer .container{ padding: 14px 18px 18px; }
.mobile-drawer a{
  display: block;
  padding: 12px 12px;
  border-radius: 14px;
  color: var(--muted);
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.03);
  margin-top: 10px;
}
.mobile-drawer a:hover{ color: var(--text); background: rgba(255,255,255,0.05); }

/* ---------------- Main layout ---------------- */
main{ padding-top: calc(var(--headerH) + 20px); }

.hero{
  padding: 40px 0 24px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
  align-items: start;
}

.hero-copy{
  padding: 12px 0;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  font-weight: 750;
  font-size: 12px;
}
.hero h1{
  margin: 14px 0 10px;
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero p{
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.hero-actions{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.notice{
  margin-top: 16px;
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}
.notice strong{ color: var(--text); }
.notice a{ text-decoration: underline; text-underline-offset: 2px; }

.tips{
  margin-top: 12px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.tip{
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
  padding: 12px 12px;
  min-height: 92px;
}
.tip .t{ font-weight: 850; font-size: 13px; }
.tip .d{ color: var(--muted2); font-size: 12px; margin-top: 6px; line-height: 1.35; }

/* Auth card */
.card{
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-inner{ padding: 16px; }
.card h2{ margin: 0 0 6px; font-size: 18px; }
.card .sub{ margin: 0 0 14px; color: var(--muted2); font-size: 13px; line-height: 1.45; }

.msg{
  margin: 10px 0 12px;
  padding: 10px 12px;
  border-radius: 14px;
  font-weight: 750;
  font-size: 13px;
}
.msg.error{ background: var(--errBg); border: 1px solid var(--errStroke); }
.msg.success{ background: var(--okBg); border: 1px solid var(--okStroke); }

.field{ margin-bottom: 12px; }
label{ display:block; font-weight: 800; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
input, select, textarea{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.18);
  color: var(--text);
  font-size: 14px;
  outline: none;
}
textarea{ min-height: 120px; resize: vertical; }
input::placeholder, textarea::placeholder{ color: rgba(255,255,255,0.44); }
input:focus, textarea:focus, select:focus{ box-shadow: 0 0 0 4px rgba(255, 61, 143, 0.20); border-color: rgba(255, 61, 143, 0.40); }

.row2{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.help{
  color: var(--muted2);
  font-size: 12px;
  margin-top: 6px;
  line-height: 1.4;
}

.check{
  display:flex;
  gap: 10px;
  align-items: flex-start;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}
.check input{ width: 18px; height: 18px; margin-top: 2px; }
.check a{ text-decoration: underline; text-underline-offset: 2px; }

.card-actions{
  display:flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

.divider{
  display:flex;
  align-items:center;
  gap: 10px;
  margin: 12px 0;
  color: rgba(255,255,255,0.52);
  font-weight: 800;
  font-size: 12px;
}
.divider:before, .divider:after{ content:""; flex:1; height:1px; background: rgba(255,255,255,0.14); }

.btn-google{
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  width: 100%;
}
.google-dot{
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: conic-gradient(from 90deg, #4285F4 0 25%, #34A853 25% 50%, #FBBC05 50% 75%, #EA4335 75% 100%);
}

.fine{
  margin-top: 12px;
  color: var(--muted2);
  font-size: 12px;
  line-height: 1.45;
}
.fine a{ text-decoration: underline; text-underline-offset: 2px; }

/* ---------------- Footer ---------------- */
.site-footer{
  margin-top: 34px;
  border-top: 1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.16);
  backdrop-filter: blur(14px);
}
.footer-inner{ padding: 26px 0; }
.footer-grid{
  display:grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 18px;
}
.footer-col h3{
  margin: 0 0 10px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: rgba(255,255,255,0.72);
}
.footer-links{
  display:flex;
  flex-wrap: wrap;
  gap: 10px 12px;
}
.footer-links a{
  font-size: 12px;
  color: var(--muted2);
  border-bottom: 1px solid transparent;
}
.footer-links a:hover{
  color: var(--text);
  border-bottom-color: rgba(255,255,255,0.26);
}

.social{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
}
.social a{
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
  display:flex;
  align-items:center;
  justify-content:center;
  color: rgba(255,255,255,0.84);
  transition: transform 0.12s ease, background 0.18s ease;
}
.social a:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.06); }
.social svg{ width: 18px; height: 18px; opacity: 0.95; }

.footer-bottom{
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.10);
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: rgba(255,255,255,0.52);
  font-size: 11px;
  line-height: 1.4;
}

/* ---------------- Content pages ---------------- */
.page{
  padding: 24px 0 0;
}
.page h1{ margin: 0 0 10px; font-size: clamp(26px, 4vw, 40px); }
.page p{ color: var(--muted); line-height: 1.7; }
.page .panel{
  margin-top: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  padding: 14px;
}
.page .panel h2{ margin: 0 0 8px; font-size: 16px; }
.page ul{ margin: 10px 0 0; padding-left: 18px; color: var(--muted); line-height: 1.7; }
.page li{ margin: 6px 0; }

.callout{
  border-radius: 18px;
  border: 1px solid rgba(255, 61, 143, 0.28);
  background: rgba(255, 61, 143, 0.10);
  padding: 14px;
  margin-top: 14px;
}
.callout strong{ color: var(--text); }

/* ------------- Responsive ------------- */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .tips{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  :root{ --headerH: 64px; }
  .nav{ display:none; }
  .burger{ display:inline-flex; align-items:center; justify-content:center; }
  .row2{ grid-template-columns: 1fr; }
  .brand-text small{ display:none; }
}

@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior: auto !important; }
  .btn, .social a{ transition: none !important; }
}

/* Focus visibility */
:focus-visible{
  outline: 3px solid rgba(255,255,255,0.32);
  outline-offset: 2px;
}