:root {
  color-scheme: dark;
  --public-bg: #0b0d18;
  --public-surface: rgba(23, 25, 42, 0.82);
  --public-surface-solid: #17192a;
  --public-text: #f5f4fb;
  --public-muted: #aba9bd;
  --public-line: rgba(226, 222, 255, 0.12);
  --public-primary: #9278ff;
  --public-primary-dark: #b0a0ff;
  --public-accent: #3dd6c0;
  --public-glow: rgba(120, 88, 255, 0.22);
  --public-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.public-home {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 4%, var(--public-glow), transparent 29rem),
    radial-gradient(
      circle at 90% 20%,
      rgba(19, 182, 162, 0.1),
      transparent 25rem
    ),
    var(--public-bg);
  color: var(--public-text);
  font-family: "Inter", system-ui, sans-serif;
  line-height: 1.6;
}

body.public-home a {
  color: inherit;
}

.public-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.public-nav {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.public-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--public-text);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.public-brand__mark {
  display: block;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 11px;
  object-fit: cover;
}

.public-nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.public-nav__link {
  border: 0;
  background: transparent;
  color: var(--public-muted);
  font: inherit;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.public-nav__link {
  padding: 9px 12px;
}

.public-nav__link:hover {
  color: var(--public-text);
}

.public-nav-login {
  cursor: pointer;
}

.public-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 750;
  line-height: 1;
  text-decoration: none;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.public-button:hover {
  transform: translateY(-2px);
}

.public-button--primary {
  background: var(--public-primary);
  box-shadow: 0 12px 30px var(--public-glow);
  color: #fff;
}

.public-button--primary:hover {
  background: var(--public-primary-dark);
}

.public-button--secondary {
  border-color: var(--public-line);
  background: var(--public-surface);
  color: var(--public-text);
}

.public-button--student {
  border-color: rgba(61, 214, 192, 0.58);
  background: rgba(61, 214, 192, 0.14);
  box-shadow: 0 0 0 1px rgba(61, 214, 192, 0.08);
  color: #72ead8;
}

.public-button--student:hover {
  border-color: var(--public-accent);
  background: var(--public-accent);
  box-shadow: 0 10px 28px rgba(61, 214, 192, 0.25);
  color: #071714;
}

.public-button--small {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 12px;
  font-size: 14px;
}

.public-hero {
  display: grid;
  min-height: 680px;
  align-items: center;
  grid-template-columns: minmax(0, 0.92fr) minmax(440px, 1.08fr);
  gap: clamp(36px, 6vw, 84px);
  padding: 72px 0 96px;
}

.public-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  padding: 7px 12px;
  border: 1px solid var(--public-line);
  border-radius: 999px;
  background: var(--public-surface);
  color: var(--public-primary);
  font-size: 13px;
  font-weight: 750;
}

.public-eyebrow::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--public-accent);
  box-shadow: 0 0 0 5px rgba(19, 182, 162, 0.12);
  content: "";
}

.public-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(44px, 5.5vw, 72px);
  font-weight: 790;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.public-hero h1 span {
  background: linear-gradient(
    120deg,
    var(--public-primary),
    var(--public-accent)
  );
  background-clip: text;
  color: transparent;
}

.public-hero__lead {
  max-width: 610px;
  margin: 24px 0 0;
  color: var(--public-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.65;
}

.public-student-entry {
  display: grid;
  width: min(100%, 610px);
  min-height: 78px;
  align-items: center;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  margin-top: 26px;
  padding: 13px 16px;
  border: 1px solid rgba(61, 214, 192, 0.58);
  border-radius: 17px;
  background:
    linear-gradient(110deg, rgba(61, 214, 192, 0.18), rgba(61, 214, 192, 0.05)),
    var(--public-surface);
  box-shadow: 0 12px 34px rgba(16, 180, 155, 0.12);
  color: var(--public-text);
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.public-student-entry:hover {
  border-color: var(--public-accent);
  box-shadow: 0 16px 42px rgba(16, 180, 155, 0.22);
  transform: translateY(-2px);
}

.public-student-entry__icon {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 13px;
  background: var(--public-accent);
  color: #071714;
  font-size: 22px;
  font-weight: 800;
}

.public-student-entry__copy {
  display: grid;
  line-height: 1.35;
}

.public-student-entry__copy strong {
  font-size: 15px;
}

.public-student-entry__copy small {
  margin-top: 3px;
  color: var(--public-muted);
  font-size: 12px;
}

.public-student-entry__action {
  color: var(--public-accent);
  font-size: 14px;
  font-weight: 800;
}

.public-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.public-hero__note {
  margin: 18px 0 0;
  color: var(--public-muted);
  font-size: 13px;
}

.public-preview {
  position: relative;
  padding: 12px;
  border: 1px solid var(--public-line);
  border-radius: 28px;
  background: var(--public-surface);
  box-shadow: var(--public-shadow);
  transform: rotate(1.2deg);
}

.public-preview::before,
.public-preview::after {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(3px);
  content: "";
}

.public-preview::before {
  top: -32px;
  right: -24px;
  width: 110px;
  height: 110px;
  background: rgba(109, 74, 255, 0.22);
}

.public-preview::after {
  bottom: -24px;
  left: -24px;
  width: 90px;
  height: 90px;
  background: rgba(19, 182, 162, 0.2);
}

.public-preview img {
  display: block;
  width: 100%;
  aspect-ratio: 1.28;
  border-radius: 18px;
  object-fit: cover;
  object-position: center 64%;
}

.public-preview__badge {
  position: absolute;
  right: 26px;
  bottom: 26px;
  max-width: 220px;
  padding: 13px 15px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(12, 15, 29, 0.88);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
  color: #f8f8ff;
  font-size: 12px;
  line-height: 1.45;
  backdrop-filter: blur(14px);
}

.public-preview__badge strong {
  display: block;
  margin-bottom: 2px;
  font-size: 14px;
}

.public-topics {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 25px;
  padding: 19px 24px;
  border-block: 1px solid var(--public-line);
  color: var(--public-muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.public-topics span:not(:last-child)::after {
  margin-left: 25px;
  color: var(--public-primary);
  content: "•";
}

.public-section {
  padding: 112px 0;
}

.public-section--compact {
  padding-top: 72px;
}

.public-section__head {
  max-width: 680px;
  margin-bottom: 48px;
}

.public-kicker {
  margin: 0 0 10px;
  color: var(--public-primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.public-section h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 50px);
  letter-spacing: -0.045em;
  line-height: 1.1;
}

.public-section__intro {
  margin: 17px 0 0;
  color: var(--public-muted);
  font-size: 17px;
}

.public-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.public-feature {
  padding: 28px;
  border: 1px solid var(--public-line);
  border-radius: 22px;
  background: var(--public-surface);
}

.public-feature__icon {
  display: grid;
  width: 46px;
  height: 46px;
  margin-bottom: 46px;
  place-items: center;
  border-radius: 14px;
  background: rgba(109, 74, 255, 0.11);
  color: var(--public-primary);
  font-size: 22px;
}

.public-feature:nth-child(2) .public-feature__icon {
  background: rgba(19, 182, 162, 0.12);
  color: var(--public-accent);
}

.public-feature h3 {
  margin: 0 0 10px;
  font-size: 21px;
  letter-spacing: -0.025em;
}

.public-feature p {
  margin: 0;
  color: var(--public-muted);
  font-size: 15px;
}

.public-showcase {
  display: grid;
  align-items: center;
  grid-template-columns: 1.12fr 0.88fr;
  gap: clamp(36px, 7vw, 90px);
}

.public-showcase__image {
  overflow: hidden;
  padding: 10px;
  border: 1px solid var(--public-line);
  border-radius: 25px;
  background: var(--public-surface);
  box-shadow: var(--public-shadow);
}

.public-showcase__image img {
  display: block;
  width: 100%;
  aspect-ratio: 1.5;
  border-radius: 17px;
  object-fit: cover;
}

.public-showcase__copy h2 {
  font-size: clamp(32px, 4vw, 48px);
}

.public-showcase__copy > p {
  color: var(--public-muted);
  font-size: 17px;
}

.public-checks {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.public-checks li {
  position: relative;
  padding-left: 31px;
  font-size: 15px;
  font-weight: 650;
}

.public-checks li::before {
  position: absolute;
  top: 1px;
  left: 0;
  display: grid;
  width: 21px;
  height: 21px;
  place-items: center;
  border-radius: 50%;
  background: rgba(19, 182, 162, 0.14);
  color: var(--public-accent);
  content: "✓";
  font-size: 12px;
  font-weight: 900;
}

.public-access {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: clamp(34px, 7vw, 90px);
  padding: clamp(34px, 6vw, 68px);
  border: 1px solid var(--public-line);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(109, 74, 255, 0.12), transparent 52%),
    var(--public-surface);
  box-shadow: var(--public-shadow);
}

.public-access h2 {
  max-width: 640px;
}

.public-access__copy p {
  max-width: 620px;
  color: var(--public-muted);
}

.public-access__copy .public-button {
  margin-top: 12px;
}

.public-login {
  padding: 26px;
  border: 1px solid var(--public-line);
  border-radius: 22px;
  background: var(--public-surface-solid);
}

.public-login h3 {
  margin: 0;
  font-size: 22px;
}

.public-login__hint {
  margin: 4px 0 22px;
  color: var(--public-muted);
  font-size: 13px;
}

.public-field {
  display: grid;
  gap: 7px;
  margin-top: 13px;
}

.public-field label {
  color: var(--public-muted);
  font-size: 12px;
  font-weight: 700;
}

.public-field input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--public-line);
  border-radius: 12px;
  outline: none;
  background: var(--public-bg);
  color: var(--public-text);
  font: inherit;
  font-size: 14px;
}

.public-field input:focus {
  border-color: var(--public-primary);
  box-shadow: 0 0 0 4px var(--public-glow);
}

.public-login #login-btn {
  width: 100%;
  margin-top: 16px;
  border: 0;
  cursor: pointer;
}

.public-login__help {
  display: block;
  margin-top: 16px;
  color: var(--public-primary);
  font-size: 13px;
  font-weight: 650;
  text-align: center;
  text-decoration: none;
}

.public-login__error {
  min-height: 20px;
  margin-top: 10px;
  color: #e14966;
  font-size: 12px;
}

body.public-modal-open {
  overflow: hidden;
}

.public-login-modal[hidden] {
  display: none;
}

.public-login-modal {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
}

.public-login-modal__backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: rgba(7, 8, 17, 0.72);
  cursor: pointer;
  backdrop-filter: blur(8px);
}

.public-login-modal__panel {
  position: relative;
  z-index: 1;
  width: min(100%, 430px);
  animation: public-modal-in 180ms ease-out;
}

.public-login-modal__panel .public-login {
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
}

.public-login-modal__close {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--public-line);
  border-radius: 10px;
  background: var(--public-bg);
  color: var(--public-muted);
  cursor: pointer;
  font: inherit;
  font-size: 22px;
  line-height: 1;
}

.public-login-modal__close:hover {
  color: var(--public-text);
}

@keyframes public-modal-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
}

.public-footer {
  padding: 38px 0 48px;
  border-top: 1px solid var(--public-line);
}

.public-footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}

.public-footer__brand p {
  max-width: 360px;
  margin: 11px 0 0;
  color: var(--public-muted);
  font-size: 13px;
}

.public-footer__links {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 9px 20px;
}

.public-footer__links a,
.public-footer__placeholder {
  color: var(--public-muted);
  font-size: 13px;
  text-decoration: none;
}

.public-footer__links a:hover {
  color: var(--public-primary);
}

.public-footer__placeholder {
  cursor: default;
  opacity: 0.65;
}

@media (max-width: 900px) {
  .public-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 56px;
  }

  .public-preview {
    max-width: 700px;
    transform: none;
  }

  .public-feature-grid {
    grid-template-columns: 1fr;
  }

  .public-feature__icon {
    margin-bottom: 25px;
  }

  .public-showcase,
  .public-access {
    grid-template-columns: 1fr;
  }

  .public-showcase__copy {
    order: -1;
  }

  .public-login {
    max-width: 520px;
  }
}

@media (max-width: 620px) {
  .public-shell {
    width: min(100% - 28px, 1180px);
  }

  .public-nav {
    min-height: 68px;
  }

  .public-nav__link {
    display: none;
  }

  .public-nav .public-nav__access {
    display: none;
  }

  .public-hero {
    gap: 48px;
    padding: 48px 0 72px;
  }

  .public-hero h1 {
    font-size: 42px;
  }

  .public-hero__actions .public-button {
    width: 100%;
  }

  .public-student-entry {
    grid-template-columns: auto 1fr;
  }

  .public-student-entry__action {
    display: none;
  }

  .public-preview img {
    aspect-ratio: 1;
  }

  .public-preview__badge {
    right: 20px;
    bottom: 20px;
    left: 20px;
    max-width: none;
  }

  .public-topics {
    justify-content: flex-start;
    gap: 7px 14px;
  }

  .public-topics span:not(:last-child)::after {
    margin-left: 14px;
  }

  .public-section {
    padding: 78px 0;
  }

  .public-feature {
    padding: 23px;
  }

  .public-access {
    padding: 24px;
    border-radius: 24px;
  }

  .public-login {
    padding: 20px;
  }

  .public-footer__inner {
    flex-direction: column;
  }

  .public-footer__links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .public-button {
    transition: none;
  }

  .public-login-modal__panel {
    animation: none;
  }
}