/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:    #2563EB;
  --blue-dk: #1D4ED8;
  --indigo:  #4F46E5;
  --text:    #0F172A;
  --muted:   #64748B;
  --border:  #E2E8F0;
  --bg:      #F8FAFC;
  --white:   #FFFFFF;
  --radius:  14px;
  --shadow:  0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.14);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ── UTILITIES ── */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue);
  background: #EFF6FF;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--text);
  margin-bottom: 40px;
}

.gradient-text {
  background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 22px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .15s, box-shadow .2s;
  font-family: inherit;
}
.btn-primary:hover { background: var(--blue-dk); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,99,235,.35); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  transition: border-color .2s, color .2s;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  color: var(--blue);
  border: none;
  border-radius: 10px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform .15s, box-shadow .2s;
  font-family: inherit;
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); }

.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 12px; }
.btn-full { width: 100%; justify-content: center; }

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226,232,240,.6);
  transition: box-shadow .3s;
}
.navbar.scrolled { box-shadow: var(--shadow); }

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  flex-shrink: 0;
}

.logo-mark {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  border-radius: 9px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: -.02em;
}
.logo-mark.sm { width: 28px; height: 28px; font-size: .7rem; border-radius: 7px; }

.logo-text { color: var(--text); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  flex: 1;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--muted);
  transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
  gap: 48px;
  max-width: 1120px;
  margin: 0 auto;
}

.hero-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .5;
}
.orb-1 { width: 600px; height: 600px; background: #DBEAFE; top: -200px; right: -100px; }
.orb-2 { width: 400px; height: 400px; background: #EDE9FE; bottom: 100px; left: -100px; }
.orb-3 { width: 300px; height: 300px; background: #D1FAE5; top: 40%; right: 20%; }

.hero-content { flex: 1; max-width: 580px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--blue);
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 24px;
}
.hero-badge::before { content: '●'; font-size: .5rem; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.03em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { display: block; font-size: 1.6rem; font-weight: 800; color: var(--text); line-height: 1; }
.stat-label { font-size: .75rem; color: var(--muted); font-weight: 500; }
.stat-divider { width: 1px; height: 36px; background: var(--border); }

/* ── HERO VISUAL ── */
.hero-visual {
  flex: 0 0 360px;
  position: relative;
  height: 380px;
  display: none;
}
@media (min-width: 900px) { .hero-visual { display: block; } }

.card-float {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
  animation: float 6s ease-in-out infinite;
}
.card-float p { font-size: .78rem; color: var(--muted); margin-top: 2px; }
.card-float strong { font-size: .92rem; font-weight: 600; }
.card-emoji { font-size: 1.6rem; }
.card-tag {
  margin-left: auto;
  font-size: .7rem;
  font-weight: 700;
  background: #EFF6FF;
  color: var(--blue);
  padding: 3px 9px;
  border-radius: 999px;
}

.card-1 { top: 20px; right: 0; animation-delay: 0s; }
.card-2 { top: 140px; left: 0; animation-delay: 1.5s; }
.card-3 { top: 270px; right: 20px; animation-delay: 3s; }

@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ── ABOUT ── */
.about {
  background: var(--bg);
  padding: 100px 0;
  text-align: center;
}
.about .section-title { margin-bottom: 56px; }

.about-intro {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto 48px;
  line-height: 1.75;
  text-align: center;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.about-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: left;
  transition: transform .25s, box-shadow .25s;
}
.about-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.about-icon { font-size: 2rem; margin-bottom: 16px; }
.about-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.about-card p { font-size: .9rem; color: var(--muted); line-height: 1.65; }

/* ── WHY ── */
.why { padding: 100px 0; }
.why-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
@media (max-width: 800px) { .why-inner { grid-template-columns: 1fr; } }

.why-body {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 20px;
}
.why-body strong { color: var(--text); }
.why-text .btn-primary { margin-top: 12px; }

.why-visual { display: flex; flex-direction: column; gap: 20px; }

.stat-card {
  background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  color: var(--white);
  border-radius: var(--radius);
  padding: 36px 32px;
  text-align: center;
}
.big-stat {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 12px;
}
.stat-card p { font-size: .9rem; opacity: .85; line-height: 1.5; }

.solution-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow);
}
.solution-icon {
  width: 36px; height: 36px;
  background: #D1FAE5;
  color: #059669;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 12px;
}
.solution-card h4 { font-weight: 700; margin-bottom: 14px; }
.solution-card ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.solution-card li {
  font-size: .9rem;
  color: var(--muted);
  padding-left: 20px;
  position: relative;
}
.solution-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--blue);
}

/* ── TEAM ── */
.team {
  background: var(--bg);
  padding: 100px 0;
  text-align: center;
}
.team .section-title { margin-bottom: 56px; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.team-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: transform .25s, box-shadow .25s;
}
.team-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  margin: 0 auto 20px;
  letter-spacing: .02em;
}
.av-1 { background: linear-gradient(135deg, #2563EB, #1D4ED8); }
.av-2 { background: linear-gradient(135deg, #7C3AED, #6D28D9); }
.av-3 { background: linear-gradient(135deg, #0891B2, #0E7490); }

.team-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }

.role-badge {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--blue);
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.team-card p { font-size: .9rem; color: var(--muted); line-height: 1.65; }

/* ── BUILT BY A STUDENT ── */
.built-by {
  padding: 80px 0;
  text-align: center;
  background: var(--white);
}
.built-by-inner {
  max-width: 640px;
  margin: 0 auto;
}
.built-by-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}
.built-by h2 {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.built-by p {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.75;
}

/* ── PORTALS ── */
.portals {
  padding: 100px 0;
  background: #F8F7FF;
  text-align: center;
}
.portals .section-title {
  margin-bottom: 16px;
}
.portals-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 48px;
  text-align: center;
  line-height: 1.7;
}
.portals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 430px));
  justify-content: center;
  gap: 24px;
}
.portal-card {
  background: var(--white);
  border-radius: 24px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,.07);
  border: 2px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s;
}
.portal-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,.12);
}
.portal-student { border-color: #E9D5FF; }
.portal-business { border-color: #FDE68A; }
.portal-admin   { border-color: #BFDBFE; }
.portal-icon {
  font-size: 36px;
  line-height: 1;
}
.portal-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 3px 10px;
  border-radius: 20px;
  width: fit-content;
}
.portal-student .portal-badge { background: #EDE9FE; color: #7C3AED; }
.portal-business .portal-badge { background: #FEF3C7; color: #92400E; }
.portal-admin .portal-badge   { background: #DBEAFE; color: #1D4ED8; }
.portal-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
}
.portal-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}
.portal-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 7px;
  margin: 4px auto;
}
.portal-features li {
  font-size: 0.875rem;
  color: #374151;
  font-weight: 500;
}
.portal-btn {
  display: block;
  text-align: center;
  padding: 12px 20px;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  margin-top: 8px;
  transition: opacity 0.2s, transform 0.15s;
}
.portal-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.portal-btn-student  { background: linear-gradient(135deg,#7C3AED,#A855F7); color: white; }
.portal-btn-business { background: linear-gradient(135deg,#F59E0B,#FF6B35); color: white; }
.portal-btn-admin    { background: linear-gradient(135deg,#2563EB,#4F46E5); color: white; }

@media (max-width: 900px) {
  .portals-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
}

/* ── CTA BAND ── */
.cta-band {
  background: linear-gradient(135deg, #1E3A8A 0%, #4C1D95 100%);
  padding: 100px 0;
  text-align: center;
  color: var(--white);
}
.cta-inner h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -.02em;
}
.cta-inner p { font-size: 1.05rem; opacity: .8; margin-bottom: 36px; }

/* ── FOOTER ── */
.footer {
  background: var(--text);
  color: rgba(255,255,255,.5);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .85rem;
  color: rgba(255,255,255,.7);
}
.footer-copy { font-size: .82rem; }

/* ── MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.55);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: none;
  place-items: center;
  padding: 24px;
}
.modal-overlay.open { display: grid; }

.modal {
  background: var(--white);
  border-radius: 20px;
  padding: 48px 40px 40px;
  width: 100%;
  max-width: 440px;
  position: relative;
  box-shadow: 0 24px 80px rgba(0,0,0,.22);
  animation: slideUp .3s cubic-bezier(.34,1.56,.64,1);
}
@keyframes slideUp {
  from { opacity:0; transform: translateY(24px) scale(.97); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 16px; right: 20px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background .2s;
}
.modal-close:hover { background: var(--bg); }

.modal-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}
.modal-logo .logo-mark { width: 52px; height: 52px; font-size: 1.1rem; border-radius: 14px; }

.modal-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 6px;
}
.modal-sub {
  text-align: center;
  font-size: .9rem;
  color: var(--muted);
  margin-bottom: 32px;
}

.oauth-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.oauth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 13px 20px;
  border-radius: 10px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .1s;
  font-family: inherit;
  border: 1.5px solid var(--border);
}
.oauth-btn:hover { transform: translateY(-1px); }
.oauth-btn:active { transform: translateY(0); }

.oauth-btn.google { background: #fff; color: #3C4043; }
.oauth-btn.google:hover { background: #F8F9FA; box-shadow: 0 2px 12px rgba(0,0,0,.1); }

.oauth-btn.apple { background: #000; color: #fff; border-color: #000; }
.oauth-btn.apple:hover { background: #1a1a1a; box-shadow: 0 2px 12px rgba(0,0,0,.25); }

.oauth-btn.microsoft { background: #fff; color: #3C4043; }
.oauth-btn.microsoft:hover { background: #F8F9FA; box-shadow: 0 2px 12px rgba(0,0,0,.1); }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 4px 0 20px;
  color: var(--muted);
  font-size: .82rem;
}
.divider::before,.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.email-form { display: flex; flex-direction: column; gap: 12px; }

.email-input {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: .9rem;
  font-family: inherit;
  color: var(--text);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.email-input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.email-input::placeholder { color: #94A3B8; }

.modal-terms {
  text-align: center;
  font-size: .78rem;
  color: var(--muted);
  margin-top: 20px;
  line-height: 1.6;
}
.modal-terms a { color: var(--blue); text-decoration: underline; }

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--white);
  padding: 14px 24px;
  border-radius: 12px;
  font-size: .9rem;
  font-weight: 500;
  opacity: 0;
  transition: opacity .3s, transform .3s;
  pointer-events: none;
  white-space: nowrap;
  z-index: 300;
  box-shadow: var(--shadow-lg);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .hero { flex-direction: column; text-align: center; padding-top: 100px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .modal { padding: 36px 24px 28px; }
  .nav-links { display: none; }
}