/* Reading Tutor — editorial / product UI */
:root {
  --bg: #f6f7f9;
  --bg-elevated: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --accent: #0f766e;
  --accent-hover: #0d9488;
  --accent-soft: rgba(15, 118, 110, 0.1);
  --danger: #b91c1c;
  --danger-soft: rgba(185, 28, 28, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 24px rgba(15, 23, 42, 0.06);
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Noto Sans KR", system-ui, sans-serif;
  --header-h: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

body.home-page {
  background-image: url("/static/pic.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
  color: var(--accent);
}

.brand-logo {
  display: block;
  height: 34px;
  width: auto;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-link {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}
.nav-link:hover {
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
}

.badge-role {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

main.main-wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.flash {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}
.flash-success {
  background: var(--accent-soft);
  color: #115e59;
  border: 1px solid rgba(15, 118, 110, 0.2);
}
.flash-error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid rgba(185, 28, 28, 0.2);
}

.page-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 0.35rem;
}

.page-lead {
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 40rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: #cbd5e1;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover {
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg);
  color: var(--text);
}
.btn-danger {
  background: #fff;
  color: var(--danger);
  border: 1px solid rgba(185, 28, 28, 0.35);
}
.btn-danger:hover {
  background: var(--danger-soft);
}

.form-group {
  margin-bottom: 1.1rem;
}
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.form-group input,
.form-group select {
  width: 100%;
  max-width: 24rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
}
.form-group input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
table.data th,
table.data td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
table.data th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: #f8fafc;
}
table.data tr:last-child td {
  border-bottom: none;
}

.row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.status-pill {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: #f1f5f9;
  color: var(--text-muted);
}
.status-pill.pending {
  background: #fff7ed;
  color: #c2410c;
}
.status-pill.approved {
  background: #ecfdf5;
  color: #047857;
}
.status-pill.rejected {
  background: #fef2f2;
  color: #b91c1c;
}

.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  text-align: center;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
  max-width: 18ch;
}
.hero p {
  color: var(--text-muted);
  max-width: 36ch;
  margin: 0 0 1.75rem;
}

.home-hero {
  position: relative;
  isolation: isolate;
  border-radius: 0;
  overflow: hidden;
  background: transparent;
  min-height: calc(100vh - var(--header-h));
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  margin-top: -2rem;
}

.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 1;
  transition: opacity 280ms ease;
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0.35) 0%,
    rgba(15, 23, 42, 0.6) 100%
  );
}

body.home-page.is-scrolling .home-hero::before {
  opacity: 0;
}

.home-hero h1,
.home-hero p {
  color: #ffffff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
}

.role-pick {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 0.5rem;
}
.role-card {
  display: block;
  width: min(100%, 220px);
  padding: 1.5rem 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.role-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
}
.role-card strong {
  font-family: var(--font-display);
  display: block;
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}
.role-card span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.site-footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.site-footer-title {
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 0.25rem;
}

.site-footer-meta {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.35rem;
}

.site-footer-links a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer-links a:hover {
  opacity: 0.85;
}

body.home-page .site-footer {
  background: transparent;
  color: #ffffff;
  border-top: none;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

.inline-form {
  display: inline;
}