:root {
  color-scheme: dark;
  --bg: #07121b;
  --surface: #0d1d28;
  --surface-2: #132936;
  --text: #f2f7f8;
  --muted: #93aab5;
  --accent: #41d5b0;
  --accent-dark: #123b35;
  --line: rgba(255, 255, 255, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 80% 10%, rgba(32, 126, 118, 0.22), transparent 32rem),
    linear-gradient(145deg, #07121b, #091823 70%);
  color: var(--text);
}

a {
  color: inherit;
}

.login-body {
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-card {
  width: min(100%, 29rem);
  padding: 3rem;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: rgba(13, 29, 40, 0.9);
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(18px);
}

.brand-mark {
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  margin-bottom: 2rem;
  place-items: center;
  border-radius: 1rem;
  background: var(--accent);
  color: #06201b;
  font-size: 2rem;
  font-weight: 300;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.5rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.login-card h1 {
  font-size: 2.4rem;
}

.lead {
  max-width: 42rem;
  margin: 1rem 0 2rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
}

input,
select,
button {
  font: inherit;
}

input[type="password"] {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  outline: none;
  background: #08141d;
  color: var(--text);
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(65, 213, 176, 0.14);
}

button {
  cursor: pointer;
}

.login-card button {
  width: 100%;
  margin-top: 1rem;
  padding: 0.95rem 1rem;
  border: 0;
  border-radius: 0.7rem;
  background: var(--accent);
  color: #06201b;
  font-weight: 800;
}

.alert {
  padding: 0.8rem 1rem;
  border: 1px solid rgba(255, 112, 112, 0.35);
  border-radius: 0.7rem;
  background: rgba(130, 24, 24, 0.22);
  color: #ffb3b3;
  font-size: 0.9rem;
}

.privacy-note {
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem clamp(1.25rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-size: 1.1rem;
  font-weight: 800;
  text-decoration: none;
}

.wordmark span {
  margin-right: 0.35rem;
  color: var(--accent);
}

.ghost-button {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: transparent;
  color: var(--muted);
}

.dashboard {
  width: min(75rem, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 7rem) 0;
}

.study-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}

.study-card {
  display: flex;
  min-height: 19rem;
  padding: 1.4rem;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  background: linear-gradient(155deg, rgba(19, 41, 54, 0.95), rgba(10, 25, 35, 0.85));
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.study-card:hover {
  transform: translateY(-5px);
  border-color: rgba(65, 213, 176, 0.5);
  background: linear-gradient(155deg, #183c48, #0d242f);
}

.study-type {
  align-self: flex-start;
  padding: 0.35rem 0.55rem;
  border-radius: 2rem;
  background: var(--accent-dark);
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.study-icon {
  display: grid;
  width: 4.5rem;
  height: 4.5rem;
  margin: 2rem 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
}

.study-title {
  margin-top: 1.75rem;
  font-size: 1.25rem;
  font-weight: 750;
}

.study-subtitle {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.study-action {
  margin-top: 1.25rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.medical-notice {
  margin-top: 2rem;
  padding: 1rem 1.2rem;
  border-left: 2px solid var(--accent);
  background: rgba(13, 29, 40, 0.65);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

@media (max-width: 900px) {
  .study-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .login-card {
    padding: 2rem 1.4rem;
  }

  .study-grid {
    grid-template-columns: 1fr;
  }

  .study-card {
    min-height: 16rem;
  }
}