/* Root & Reset */
:root{
  --bg-1: #fafeff;
  --bg-2: #e6f7f7;
  --accent: #006666;
  --white: #fafeff;
  --text: #4a4a4a;
  --text-soft: #6a7a7a;
  --ring: rgba(0,102,102,.18);
  --radius: 22px;
  --header-h: 72px;
  --shadow-strong: 0 20px 40px rgba(0,102,102,.10);
  --shadow-soft: 0 10px 24px rgba(0,102,102,.08);
  --glass-bg: rgba(0,102,102,.08);
  --glass-stroke: rgba(0,102,102,.22);
  --glass-inner: inset 0 1px 0 rgba(0,102,102,.12), inset 0 -1px 0 rgba(0,102,102,.10);
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
  min-height: 100vh;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Montserrat", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  min-height: 100vh;
  width: 100vw;
  background: linear-gradient(180deg,
    rgba(0,102,102,0.4) 0%,
    rgba(74,74,74,0.4) 50%,
    rgba(250,254,255,0.4) 100%
  );
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  overflow-x: hidden;
}

/* Appbar (sticky) */
.appbar{
  position: sticky;
  top: 0;
  height: var(--header-h);
  z-index: 30;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(80px);
  background: linear-gradient(180deg, rgba(255,255,255,.4), rgba(255,255,255,.06));
  border-bottom: 1px solid rgba(255,255,255,.2);
  box-shadow: 0 6px 24px rgba(0,0,0,.2);
}
.appbar-inner{
  height: 100%;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 0 18px;
}
.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 2px 8px rgba(0,102,102,.12);
}
.title-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.title{
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .2px;
  opacity: 1;
  transition: none;
  white-space: nowrap;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,102,102,.18), 0 1px 0 #006666;
}
.subtitle {
  font-size: 15px;
  color: #0f6f74;
  margin-top: -10px;
  margin-left: 2px;
  letter-spacing: .1px;
  font-weight: 500;
  opacity: 0.85;
}
/* Pulsing arrow for next page */
.arrow-next {
  animation: pulseArrow 1.2s infinite;
}
@keyframes pulseArrow {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.7; }
  100% { transform: scale(1); opacity: 1; }
}

/* Welcome */
.welcome{
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  place-items: center;
  padding: 40px 20px 60px;
}
.welcome-panel{
  width: min(900px, 92vw);
  border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(180deg, rgba(255,255,255,.8), rgba(255,255,255,.06));
  border: 1px solid var(--glass-stroke);
  box-shadow: var(--shadow-strong), var(--glass-inner);
  backdrop-filter: blur(28px) saturate(120%);
  -webkit-backdrop-filter: blur(28px) saturate(120%);
  padding: clamp(22px, 4.5vw, 40px);
}
.welcome-panel h2{
  margin: 0 0 6px 0;
  font-size: clamp(26px, 5vw, 40px);
}
.lead{
  color: var(--text);
  opacity: .92;
  font-size: clamp(16px, 2.5vw, 18px);
  margin: 6px 0 16px 0;
}
.guide{
  margin: 0 0 16px 18px;
  padding: 0;
  color: var(--text-soft);
}
.hint{
  margin: 8px 0 0 0;
  color: var(--text);
  opacity: .8;
  font-size: 14px;
  letter-spacing: .3px;
}

/* Sentinel */
#welcomeSentinel { position: absolute; bottom: -1px; height: 1px; width: 1px; }

/* Grid Wrap */
.grid-wrap{
  padding: 16px 16px 120px;
}

/* Cards Grid: 2 on phones, 3 on tablets, 5 on desktop */
.cards{
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 720px){
  .cards{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1200px){
  .cards{ grid-template-columns: repeat(5, minmax(0, 1fr)); }
}

/* Card (front face) */
.card{
  position: relative;
  aspect-ratio: 8/5;              /* nice tall cards */
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  user-select: none;
  background: linear-gradient(180deg, rgba(255,255,255,.3), rgba(255,255,255,.8));
  border: 1px solid var(--glass-stroke);
  box-shadow: var(--shadow-soft), var(--glass-inner);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  transition: transform .18s ease, box-shadow .18s ease;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 16px;
}
.card:hover{
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(0,0,0,.28);
}
.card .q{
  font-weight: 600;
  font-size: clamp(15px, 1.6vw, 20px);
  line-height: 1.35;
  color: #006666;
}

/* Overlay for Active Card */
.overlay{
  position: fixed;
  inset: 0;
  z-index: 40;
  display: none;
}
.overlay.show{ display: block; }
.overlay-backdrop{
  position: absolute; inset: 0;
  backdrop-filter: blur(10px) saturate(110%);
  -webkit-backdrop-filter: blur(10px) saturate(110%);
  background: rgba(0,0,0,.35);
  opacity: 0;
  animation: backdropIn .28s ease forwards;
}
@keyframes backdropIn{ to { opacity: 1; } }

/* Active card container (flip-zoom) */
.card-active{
  position: relative;
  width: min(880px, 94vw);
  height: min(82vh, 860px);
  margin: 6vh auto 0;
  border-radius: calc(var(--radius) + 4px);
  background: linear-gradient(180deg, rgba(250,254,255,1), rgba(250,254,255,.8));
  border: 1px solid var(--glass-stroke);
  box-shadow: var(--shadow-strong), var(--glass-inner);
  backdrop-filter: blur(24px) saturate(130%);
  -webkit-backdrop-filter: blur(24px) saturate(130%);
  transform-origin: center;
  animation: flipZoomIn .5s cubic-bezier(.2,.7,.2,1) forwards;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
@keyframes flipZoomIn{
  0%   { transform: perspective(1500px) rotateY(-50deg) scale(.5); opacity: .0; }
  60%  { transform: perspective(100px) rotateY(0deg)  scale(1.02); opacity: 1; }
  100% { transform: perspective(1200px) rotateY(0deg)  scale(1.0);  opacity: 1; }
}

/* Active card header */
.card-active .head{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 16px 18px 12px;
  border-bottom: 1px solid rgba(255,255,255,.18);
}
.card-active .head h3{
  margin: 0;
  font-size: clamp(15px, 2vw, 20px);
}

/* Close button */
.icon-btn{
  appearance: none;
  border: 1px solid rgba(255,255,255,.35);
  background: linear-gradient(180deg, rgba(250,254,255,1), rgba(250,254,255,.05));
  color: var(--black);
  border-radius: 12px;
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--glass-inner);
  transition: transform .12s ease, box-shadow .12s ease;
}
.icon-btn:hover{ transform: translateY(-1px); }

/* Active card scrollable content */
.card-active .body{
  overflow: auto;
  padding: 16px 18px;
  -webkit-overflow-scrolling: touch; /* smooth native scrolling on iOS */
}

/* Prevent background from scrolling when overlay is open by making overlay capture wheel/touch events */
.overlay.show {
  touch-action: none;
}
.overlay.show .card-active .body {
  touch-action: auto; /* allow scrolling inside card body only */
}
.meta{
  display: grid;
  gap: 8px;
  color: var(--text-soft);
  font-size: 15px;
  margin-bottom: 10px;
}
.tip{
  background: rgba(255,255,255,.7);
  border: 5px solid #006666;
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: var(--glass-inner);
  line-height: 1.45;
  margin: 8px 0 16px 0;
}

/* Guided fields */
.group{
  margin: 14px 0;
}
.group label{
  display: block;
  font-size: 15px;
  color: #5d5d5d;
  margin: 0 0 6px 2px;
}
.group textarea, .group input{
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.30);
  background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.06));
  color: #c0bfbf;
  padding: 12px 14px;
  outline: none;
  box-shadow: var(--glass-inner), 0 6px 18px rgba(0,0,0,.2);
}
.group textarea{
  min-height: 112px;
  resize: vertical;
}

/* Footer in active card */
.card-active .foot{
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 12px 18px 16px;
  border-top: 1px solid rgba(255,255,255,.18);
}
.btn{
  appearance: none;
  border: 1px solid rgba(250,254,255,.35);
  background: linear-gradient(180deg, rgba(255,255,255,.18), rgba(255,255,255,.06));
  color: var(--black);
  border-radius: 14px;
  padding: 10px 14px;
  font-weight: 700;
  letter-spacing: .2px;
  cursor: pointer;
  box-shadow: var(--glass-inner), 0 10px 20px rgba(0,0,0,.25);
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn.primary{
  border-color: var(--accent);
  box-shadow: 0 8px 18px var(--ring), var(--glass-inner);
}

/* Footer (page) */
.footer{
  position: relative;
  z-index: 10;
  padding: 28px 16px 48px;
}
.footer-inner{
  width: min(1100px, 94vw);
  margin: 0 auto;
  color: var(--text-soft);
  text-align: center;
}
.footer a.email-link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 16px;
  background: linear-gradient(120deg, rgba(255,255,255,0.18) 0%, rgba(0,102,102,0.10) 100%);
  border: 1px solid rgba(0,102,102,0.22);
  box-shadow: 0 6px 24px rgba(0,102,102,0.12), 0 1px 0 rgba(255,255,255,0.18) inset;
  color: #006666;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.18s, box-shadow 0.18s, color 0.18s;
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  margin-left: 8px;
  margin-right: 8px;
  cursor: pointer;
}
.footer a.email-link:hover {
  background: linear-gradient(120deg, rgba(0,102,102,0.18) 0%, rgba(255,255,255,0.10) 100%);
  color: #004444;
  box-shadow: 0 10px 32px rgba(0,102,102,0.18), 0 2px 0 rgba(255,255,255,0.22) inset;
}

/* Scrollbars (WebKit) */
.card-active .body::-webkit-scrollbar { width: 10px; }
.card-active .body::-webkit-scrollbar-thumb{
  background: rgba(255,255,255,.2);
  border-radius: 12px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* Safe-area for iOS */
@supports (-webkit-touch-callout: none) {
  .appbar { padding-top: env(safe-area-inset-top); }
  .footer { padding-bottom: calc(48px + env(safe-area-inset-bottom)); }
}

/* Focus */
:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 12px;
}