@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --ink: #172121;
  --muted: #65706d;
  --paper: #f7f5ef;
  --surface: #fffdf8;
  --line: #dfe4dc;
  --teal: #126b68;
  --teal-dark: #0b4f4d;
  --coral: #e8755b;
  --yellow: #f3c969;
  --shadow: 0 18px 45px rgba(25, 52, 47, 0.1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.5;
}

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3, .brand { font-family: 'Space Grotesk', sans-serif; }
h1 { font-size: clamp(2.2rem, 5vw, 4.5rem); line-height: 0.98; letter-spacing: -0.04em; }
h2 { font-size: 2rem; line-height: 1.05; }
a { color: inherit; }

.site-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  padding: 28px 28px 18px;
}

.brand { color: var(--teal-dark); font-size: 1.35rem; font-weight: 700; text-decoration: none; }
.brand-mark { color: var(--coral); }
.site-nav { align-items: center; display: flex; gap: 24px; }
.site-nav a { color: var(--muted); font-weight: 700; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current='page'] { color: var(--teal); }
.user-menu { color: var(--teal-dark); font-weight: 700; position: relative; }
.user-menu summary { align-items: center; cursor: pointer; display: flex; gap: 8px; list-style: none; }
.user-menu summary::-webkit-details-marker { display: none; }
.user-menu summary img { border: 2px solid var(--yellow); border-radius: 50%; height: 30px; object-fit: cover; width: 30px; }
.user-menu-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; box-shadow: var(--shadow); min-width: 150px; padding: 8px; position: absolute; right: 0; top: calc(100% + 10px); z-index: 2; }
.user-menu-panel a { display: block; padding: 8px 10px; white-space: nowrap; }
.user-menu-panel a:hover { background: #edf3ef; border-radius: 4px; }

main { margin: 0 auto; max-width: 1180px; padding: 56px 28px 90px; }
.eyebrow { color: var(--coral); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; }
.muted { color: var(--muted); }
.button { border: 0; border-radius: 6px; cursor: pointer; display: inline-block; font: inherit; font-weight: 700; padding: 13px 20px; text-decoration: none; }
.button-primary { background: var(--teal); color: white; }
.button-primary:hover { background: var(--teal-dark); }
.button-light { background: var(--surface); border: 1px solid var(--line); color: var(--teal-dark); }

.login-shell { align-items: center; display: grid; gap: 70px; grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr); min-height: 70vh; }
.login-intro { position: relative; }
.login-intro::after { background: var(--yellow); border-radius: 50%; content: ''; height: 120px; position: absolute; right: 10%; top: -30px; width: 120px; z-index: -1; }
.login-intro p { color: var(--muted); font-size: 1.1rem; max-width: 480px; }
.login-image { border-radius: 8px; box-shadow: var(--shadow); margin-top: 24px; max-width: 290px; width: 100%; }
.form-card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); padding: 34px; }
.form-card h2 { font-size: 1.65rem; margin-bottom: 8px; }
.form-row { margin-bottom: 18px; }
label { display: block; font-size: 0.9rem; font-weight: 700; margin-bottom: 7px; }
input, select, textarea { background: white; border: 1px solid #cbd5ce; border-radius: 4px; color: var(--ink); font: inherit; padding: 12px 13px; width: 100%; }
input:focus, select:focus, textarea:focus { border-color: var(--teal); outline: 2px solid rgba(18, 107, 104, 0.16); }
.form-card .button { margin-top: 4px; width: 100%; }
.form-note { color: var(--muted); font-size: 0.82rem; margin: 18px 0 0; text-align: center; }

.dashboard-hero { align-items: end; display: flex; justify-content: space-between; margin-bottom: 46px; }
.dashboard-hero h1 { margin-bottom: 12px; max-width: 600px; }
.dashboard-hero p { color: var(--muted); font-size: 1.1rem; margin-bottom: 0; }
.dashboard-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.feature-card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; display: flex; flex-direction: column; min-height: 220px; padding: 26px; }
.feature-card h2 { font-size: 1.4rem; margin: 10px 0; }
.feature-card p { color: var(--muted); flex: 1; }
.feature-icon { align-items: center; background: #e3f0e9; border-radius: 50%; color: var(--teal-dark); display: flex; font-size: 1.35rem; height: 42px; justify-content: center; width: 42px; }
.section-heading { align-items: end; display: flex; justify-content: space-between; margin: 72px 0 18px; }
.section-heading h2 { font-size: 1.6rem; margin: 0; }
.section-heading a { color: var(--teal); font-weight: 700; }
.session-list { display: grid; gap: 14px; }
.session-card { align-items: center; background: var(--surface); border-left: 5px solid var(--coral); border-radius: 6px; box-shadow: 0 4px 16px rgba(25, 52, 47, 0.05); display: grid; gap: 18px; grid-template-columns: 1fr auto; padding: 20px 22px; }
.session-card h3 { font-size: 1.15rem; margin-bottom: 4px; }
.session-card p { color: var(--muted); margin: 0; }
.session-card .session-details { min-width: 0; }
.session-card .session-host { color: var(--teal-dark); font-size: 0.9rem; font-weight: 700; margin-top: 7px; }
.session-card .session-host span { color: var(--muted); font-weight: 400; }
.session-card .button { white-space: nowrap; }
.status { background: #e3f0e9; border-radius: 20px; color: var(--teal-dark); font-size: 0.78rem; font-weight: 700; padding: 6px 10px; }
.data-note { background: #edf3ef; border: 1px dashed #a9c3b7; border-radius: 6px; color: var(--teal-dark); margin-top: 28px; padding: 14px 18px; }

.search-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; margin: 34px 0 42px; padding: 26px; }
.search-row { align-items: end; display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr) 180px auto; }
.search-row .form-row { margin-bottom: 0; }
.filter-toggle { border: 0; color: var(--teal); cursor: pointer; font: inherit; font-weight: 700; padding: 8px 0 0; }
.filter-toggle::before { content: '+'; margin-right: 7px; }
.filter-toggle[aria-expanded='true']::before { content: '−'; }
.advanced-filters { border-top: 1px solid var(--line); display: none; gap: 16px; grid-template-columns: repeat(3, 1fr); margin-top: 24px; padding-top: 24px; }
.advanced-filters.is-visible { display: grid; }
.results-heading { align-items: end; display: flex; justify-content: space-between; margin-bottom: 18px; }
.results-heading h2 { font-size: 1.6rem; margin: 0; }
.results-count { color: var(--muted); font-size: 0.9rem; }
.empty-results { background: var(--surface); border: 1px dashed var(--line); border-radius: 6px; color: var(--muted); display: none; padding: 24px; text-align: center; }
.empty-results.is-visible { display: block; }
.join-confirmation { color: var(--teal); display: none; font-size: 0.85rem; font-weight: 700; margin: 8px 0 0; }
.join-confirmation.is-visible { display: block; }

.form-page { max-width: 850px; }
.form-page h1 { font-size: clamp(2.5rem, 6vw, 4rem); margin-bottom: 14px; }
.session-form { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; margin-top: 36px; padding: 34px; }
.profile-layout { align-items: start; display: grid; gap: 24px; grid-template-columns: 220px minmax(0, 1fr); margin-top: 36px; }
.profile-summary { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 20px; text-align: center; }
.profile-avatar { border-radius: 50%; height: 116px; object-fit: cover; width: 116px; }
.profile-summary h2 { font-size: 1.3rem; margin: 16px 0 4px; }
.profile-summary p { color: var(--muted); font-size: 0.9rem; margin: 0; }
.profile-form { margin-top: 0; }
.matching-note { background: #e3f0e9; border-left: 4px solid var(--teal); color: var(--teal-dark); font-size: 0.9rem; margin-bottom: 24px; padding: 14px 16px; }
.form-grid { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; }
.full-width { grid-column: 1 / -1; }
.checkbox-row { align-items: center; display: flex; gap: 10px; margin-top: 20px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }
.form-actions { align-items: center; border-top: 1px solid var(--line); display: flex; gap: 14px; justify-content: flex-end; margin-top: 28px; padding-top: 24px; }
.service-note { background: #fff4d9; border-left: 4px solid var(--yellow); color: #5f4d1b; font-size: 0.9rem; margin-top: 24px; padding: 14px 16px; }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem; margin: 0 auto; max-width: 1180px; padding: 22px 28px 32px; }
.site-footer p { margin: 0; }

@media (max-width: 720px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 16px; }
  .site-nav { flex-wrap: wrap; gap: 12px 18px; }
  main { padding-top: 34px; }
  .login-shell, .dashboard-grid { grid-template-columns: 1fr; }
  .login-shell { gap: 36px; }
  .dashboard-hero { align-items: flex-start; flex-direction: column; gap: 22px; }
  .form-grid { grid-template-columns: 1fr; }
  .search-row, .advanced-filters { grid-template-columns: 1fr; }
  .results-heading { align-items: flex-start; flex-direction: column; gap: 6px; }
  .profile-layout { grid-template-columns: 1fr; }
  .profile-summary { text-align: left; }
  .profile-avatar { display: block; }
  .full-width { grid-column: auto; }
  .session-card { align-items: flex-start; grid-template-columns: 1fr; }
}