:root {
  --accent:       #1a4fd6;
  --accent-mid:   #3b6ef0;
  --accent-light: #dce7fd;
  --bg:           #e8f0fe;
  --surface:      #ffffff;
  --text:         #0d1b3e;
  --muted:        #5a6a8a;
  --border:       rgba(26,60,140,0.12);
  --green:        #146b45;
  --green-light:  #d6f5e7;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; scroll-behavior:smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  /* block scroll during OOBE */
  overflow-y: hidden;
}
body.ready { overflow-y: auto; }
/*oobe splash*/
#oobe {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background: var(--bg);
  pointer-events: none;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

#oobe-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(26,79,214,0.11) 0%, transparent 55%),
    radial-gradient(circle at 75% 65%, rgba(59,110,240,0.08) 0%, transparent 55%);
  animation: oobeBgPulse 3s ease-in-out infinite alternate;
}
@keyframes oobeBgPulse {
  from { opacity: 0.6; }
  to   { opacity: 1; }
}

/* dot grid on OOBE */
#oobe-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(26,60,140,0.10) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0;
  animation: dotReveal 1s 0.3s ease forwards;
}
@keyframes dotReveal { to { opacity: 1; } }

#oobe-logo-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  opacity: 0;
  transform: translateY(30px);
  animation: oobeLogoIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}
@keyframes oobeLogoIn {
  to { opacity: 1; transform: translateY(0); }
}

#oobe-logo-img {
  width: 140px;
  filter: drop-shadow(0 12px 40px rgba(26,79,214,0.28));
}

#oobe-logo-img.breathe {
  animation: logoBreathBig 3s ease-in-out infinite;
}
@keyframes logoBreathBig {
  0%,100% { filter: drop-shadow(0 12px 40px rgba(26,79,214,0.28)); transform: translateY(0); }
  50%      { filter: drop-shadow(0 20px 52px rgba(26,79,214,0.38)); transform: translateY(-8px); }
}

.oobe-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(26,79,214,0.14);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.5);
  opacity: 0;
  pointer-events: none;
}
.oobe-ring-1 { width: 200px; height: 200px; animation: ringGrow 1.2s cubic-bezier(0.16,1,0.3,1) 0.9s forwards; }
.oobe-ring-2 { width: 280px; height: 280px; animation: ringGrow 1.2s cubic-bezier(0.16,1,0.3,1) 1.1s forwards; border-color: rgba(26,79,214,0.07); }
.oobe-ring-3 { width: 370px; height: 370px; animation: ringGrow 1.2s cubic-bezier(0.16,1,0.3,1) 1.3s forwards; border-color: rgba(26,79,214,0.04); }
@keyframes ringGrow {
  to { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

#oobe-label {
  font-family: 'Playfair Display', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  opacity: 0;
  transform: translateY(10px);
  animation: oobeLabelIn 0.8s cubic-bezier(0.16,1,0.3,1) 1.1s forwards;
}
@keyframes oobeLabelIn {
  to { opacity: 1; transform: translateY(0); }
}

#oobe-sub {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  opacity: 0;
  animation: oobeLabelIn 0.7s ease 1.4s forwards;
}

#oobe-shimmer {
  position: absolute;
  top: 0; left: -100%;
  width: 55%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(59,110,240,0.45), transparent);
  animation: shimmerSweep 2s 0.6s ease forwards;
}
@keyframes shimmerSweep {
  0%   { left: -100%; opacity: 0; }
  15%  { opacity: 1; }
  100% { left: 115%; opacity: 0; }
}

#oobe.exit {
  opacity: 0;
  transform: translateY(-18px);
  pointer-events: none;
}
#oobe.gone { display: none; }

/*PERMANENT FLOATING LOGO (after OOBE)*/
#logo-float {
  position: fixed;
  right: 52px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  opacity: 0;
  pointer-events: none;
  /* JS will add class 'visible' */
  transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1),
              transform 0.8s cubic-bezier(0.16,1,0.3,1);
}
#logo-float.visible {
  opacity: 1;
}

#logo-float img {
  width: 110px;
  filter: drop-shadow(0 8px 28px rgba(26,79,214,0.22));
  animation: floatBreath 4s ease-in-out infinite;
}
@keyframes floatBreath {
  0%,100% { filter: drop-shadow(0 8px 28px rgba(26,79,214,0.22)); transform: translateY(0); }
  50%      { filter: drop-shadow(0 14px 40px rgba(26,79,214,0.32)); transform: translateY(-6px); }
}

.float-ring {
  position: absolute;
  border-radius: 50%;
  top: 50%; left: 50%;
  opacity: 0;
  transform: translate(-50%, -58%) scale(0.85);
  transition: opacity 1s ease, transform 1s cubic-bezier(0.16,1,0.3,1);
}
.float-ring-1 { width: 150px; height: 150px; border: 1px solid rgba(26,79,214,0.13); }
.float-ring-2 { width: 195px; height: 195px; border: 1px solid rgba(26,79,214,0.06); }

#logo-float.visible .float-ring {
  opacity: 1;
  transform: translate(-50%, -58%) scale(1);
}
#logo-float.visible .float-ring-2 { transition-delay: 0.15s; }

#float-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.65;
  text-align: center;
  line-height: 1.6;
}

/* ANIMATED BACKGROUND (persistent)*/
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}
.bg-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(26,79,214,0.12), transparent 70%);
  top: -15%; left: -10%;
  animation: orbDrift1 18s ease-in-out infinite;
}
.bg-orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,110,240,0.08), transparent 70%);
  bottom: -10%; right: -5%;
  animation: orbDrift2 22s ease-in-out infinite;
}
.bg-orb-3 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(20,107,69,0.06), transparent 70%);
  top: 40%; left: 55%;
  animation: orbDrift3 26s ease-in-out infinite;
}
@keyframes orbDrift1 {
  0%,100% { transform: translate(0,0); }
  33%      { transform: translate(60px, 80px); }
  66%      { transform: translate(-40px, 50px); }
}
@keyframes orbDrift2 {
  0%,100% { transform: translate(0,0); }
  40%      { transform: translate(-70px, -60px); }
  70%      { transform: translate(30px, -30px); }
}
@keyframes orbDrift3 {
  0%,100% { transform: translate(0,0); }
  50%      { transform: translate(-50px, 40px); }
}

.dot-grid {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(26,60,140,0.11) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.16,1,0.3,1), transform 0.9s cubic-bezier(0.16,1,0.3,1);
}
.page.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── NAV ── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 0;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo img {
  width: 38px; height: 38px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(26,79,214,0.25));
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), filter 0.3s;
}
.nav-logo img:hover {
  transform: rotate(-6deg) scale(1.12);
  filter: drop-shadow(0 4px 14px rgba(26,79,214,0.4));
}
.logo-mark {
  font-family: 'Playfair Display', serif;
  font-size: 26px; font-weight: 700;
  color: var(--accent); letter-spacing: -0.5px;
}
.logo-divider { width: 1px; height: 18px; background: var(--border); margin: 0 2px; }
.logo-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.10em; text-transform: uppercase; font-weight: 600; }

.nav-tag {
  font-size: 11px; font-weight: 600;
  background: var(--accent-light); color: var(--accent);
  padding: 4px 12px; border-radius: 20px;
  letter-spacing: 0.06em; text-transform: uppercase;
  position: relative; overflow: hidden;
}
.nav-tag::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
  transform: translateX(-100%);
  animation: tagShimmer 4s 1s ease infinite;
}
@keyframes tagShimmer { to { transform: translateX(200%); } }

/* ── HERO ── */
.hero { text-align: center; padding: 80px 0 60px; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.12em;
  background: var(--accent-light); padding: 6px 16px; border-radius: 20px;
  margin-bottom: 28px;
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.hero-eyebrow::before, .hero-eyebrow::after {
  content: ''; width: 16px; height: 1px; background: var(--accent); opacity: 0.5;
}

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(38px, 6vw, 58px); font-weight: 700;
  color: var(--text); line-height: 1.12; margin-bottom: 18px; letter-spacing: -1px;
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.7s ease 0.12s, transform 0.7s ease 0.12s;
}
.hero h1 em { font-style: italic; color: var(--accent); }

.hero-sub {
  font-size: 17px; color: var(--muted);
  max-width: 480px; margin: 0 auto 12px; line-height: 1.65; font-weight: 400;
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.6s ease 0.22s, transform 0.6s ease 0.22s;
}

.hero-meta {
  font-size: 13px; color: var(--muted);
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.5s ease 0.32s, transform 0.5s ease 0.32s;
}

.page.visible .hero-eyebrow,
.page.visible .hero h1,
.page.visible .hero-sub,
.page.visible .hero-meta {
  opacity: 1; transform: translateY(0);
}

/* ── SEPARATOR ── */
.sep {
  display: flex; align-items: center; gap: 14px;
  margin: 10px 0 44px;
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.5s ease 0.38s, transform 0.5s ease 0.38s;
}
.page.visible .sep { opacity: 1; transform: translateY(0); }
.sep-line { flex: 1; height: 1px; background: var(--border); }
.sep-label { font-size: 11px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.10em; white-space: nowrap; }

/* ── CARDS ── */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 56px; }

.portal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 32px 32px;
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
  cursor: pointer;
  opacity: 0; transform: translateY(28px) scale(0.97);
  transition:
    opacity 0.7s ease,
    transform 0.7s cubic-bezier(0.22,1,0.36,1),
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}
.portal-card:nth-child(1) { transition-delay: 0.46s; }
.portal-card:nth-child(2) { transition-delay: 0.56s; }

.page.visible .portal-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* hover lift */
.portal-card:hover {
  transform: translateY(-6px) scale(1.01) !important;
  box-shadow: 0 20px 60px rgba(26,60,140,0.16);
  border-color: rgba(26,60,140,0.24);
}

/* top stripe */
.portal-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  border-radius: 20px 20px 0 0;
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.22,1,0.36,1);
}
.portal-card.student::before { background: linear-gradient(90deg,#1a4fd6,#3b6ef0,#60a5fa); }
.portal-card.teacher::before { background: linear-gradient(90deg,#146b45,#1d9e75,#34d399); }
.portal-card:hover::before { transform: scaleX(1); }

/* cursor spotlight */
.portal-card::after {
  content: '';
  position: absolute;
  width: 300px; height: 300px; border-radius: 50%;
  pointer-events: none; opacity: 0;
  transition: opacity 0.3s;
  transform: translate(-50%, -50%);
  left: var(--mx, 50%); top: var(--my, 50%);
}
.portal-card.student::after { background: radial-gradient(circle, rgba(26,79,214,0.07) 0%, transparent 70%); }
.portal-card.teacher::after { background: radial-gradient(circle, rgba(20,107,69,0.07) 0%, transparent 70%); }
.portal-card:hover::after { opacity: 1; }

.card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 22px;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.student .card-icon { background: var(--accent-light); }
.teacher .card-icon { background: var(--green-light); }
.portal-card:hover .card-icon { transform: rotate(-8deg) scale(1.1); }

.card-role { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 8px; }
.student .card-role { color: var(--accent); }
.teacher .card-role { color: var(--green); }

.card-title { font-family: 'Playfair Display', serif; font-size: 24px; font-weight: 700; color: var(--text); margin-bottom: 12px; line-height: 1.2; }
.card-desc { font-size: 14px; color: var(--muted); line-height: 1.6; flex: 1; margin-bottom: 24px; }

.card-features { display: flex; flex-direction: column; gap: 7px; margin-bottom: 28px; }
.feature-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted);
  transition: color 0.2s, transform 0.2s;
}
.portal-card:hover .feature-item { transform: translateX(3px); }

.feature-dot { width: 5px; height: 5px; border-radius: 50%; flex-shrink: 0; }
.student .feature-dot { background: var(--accent-mid); }
.teacher .feature-dot { background: var(--green); }

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

.card-cta {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-size: 13px; font-weight: 700;
  padding: 12px 20px; border-radius: 10px; border: none; cursor: pointer;
  font-family: 'DM Sans', sans-serif; text-decoration: none; width: 100%;
  position: relative; overflow: hidden;
  transition: transform 0.15s, box-shadow 0.2s;
}
.student .card-cta { background: var(--accent); color: white; }
.teacher .card-cta { background: var(--green); color: white; }
.card-cta::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}
.card-cta:hover::before { transform: translateX(100%); }
.card-cta:hover { transform: scale(1.02); box-shadow: 0 6px 20px rgba(0,0,0,0.18); }
.card-cta:active { transform: scale(0.97); }

.cta-arrow { transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1); display: inline-block; }
.portal-card:hover .cta-arrow { transform: translateX(5px); }

.or-divider { display: flex; align-items: center; gap: 8px; }
.or-line { flex: 1; height: 1px; background: var(--border); }
.or-text { font-size: 11px; color: var(--muted); font-weight: 600; letter-spacing: 0.06em; }

.google-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 9px; font-size: 13px; font-weight: 600;
  padding: 10px 20px; border-radius: 10px;
  border: 1.5px solid var(--border); background: white; color: var(--text);
  cursor: pointer; font-family: 'DM Sans', sans-serif; text-decoration: none; width: 100%;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}
.google-btn:hover {
  background: #f5f8ff; border-color: rgba(26,60,140,0.3);
  box-shadow: 0 3px 14px rgba(26,79,214,0.12); transform: scale(1.02);
}
.google-btn:active { transform: scale(0.97); }
.google-icon { width: 17px; height: 17px; flex-shrink: 0; }

.stats-strip {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 14px; margin-bottom: 56px;
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.6s ease 0.68s, transform 0.6s ease 0.68s;
}
.page.visible .stats-strip { opacity: 1; transform: translateY(0); }

.stat-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px 16px; text-align: center;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.25s;
  cursor: default;
}
.stat-item:hover { transform: translateY(-4px) scale(1.03); box-shadow: 0 10px 30px rgba(26,60,140,0.12); }
.stat-num { font-family: 'Playfair Display', serif; font-size: 28px; font-weight: 700; color: var(--text); line-height: 1; margin-bottom: 5px; }
.stat-lbl { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }

footer {
  border-top: 1px solid var(--border); padding: 28px 0 36px;
  display: flex; align-items: center; justify-content: space-between;
  opacity: 0; transform: translateY(12px);
  transition: opacity 0.5s ease 0.78s, transform 0.5s ease 0.78s;
}
.page.visible footer { opacity: 1; transform: translateY(0); }
.footer-logo { font-family: 'Playfair Display', serif; font-size: 16px; font-weight: 700; color: var(--accent); }
.footer-text { font-size: 12px; color: var(--muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 12px; color: var(--muted); text-decoration: none; transition: color 0.2s, transform 0.2s; display: inline-block; }
.footer-links a:hover { color: var(--accent); transform: translateY(-1px); }

@media (max-width: 1100px) { #logo-float { display: none; } }
@media (max-width: 640px) {
  .cards { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .hero { padding: 52px 0 40px; }
  footer { flex-direction: column; gap: 14px; text-align: center; }
  .footer-links { justify-content: center; }
}