/* ─── Guest Navbar ──────────────────────────────────────── */
.guest-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.guest-nav__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
  height: 56px;
  display: flex;
  align-items: center;
}

.guest-nav__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-right: auto;
}

.guest-nav__logo:hover {
  color: var(--color-secondary);
}

.guest-nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.guest-nav__link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.guest-nav__link:hover {
  color: var(--color-primary);
}

.guest-nav__link--muted {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.guest-nav__link--cta {
  background: var(--color-primary);
  color: #fff;
  padding: var(--sp-2) var(--sp-4);
  border-radius: 6px;
}

.guest-nav__link--cta:hover {
  background: var(--color-secondary);
  color: #fff;
}

/* ─── Locale Select ───────────────────────────────────── */
.locale-select {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%235b7b8a'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right center;
  padding-right: 16px;
}

.locale-select:hover {
  color: var(--color-primary);
}

.locale-select:focus {
  outline: none;
  color: var(--color-primary);
}

/* ─── Guest Main ───────────────────────────────────────── */
.guest-main {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--sp-8) var(--sp-6);
}

/* ─── Guest Footer ─────────────────────────────────────── */
.guest-footer {
  border-top: 1px solid var(--color-border);
  margin-top: var(--sp-16);
}

.guest-footer__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.guest-footer__left {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.guest-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.guest-footer__copy {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.guest-footer__links {
  display: flex;
  gap: var(--sp-4);
  font-family: var(--font-heading);
  font-size: 0.85rem;
}

.guest-footer__links a {
  color: var(--color-text-muted);
}

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

/* ─── Hero ─────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: var(--sp-16) 0 var(--sp-12);
}

.hero__title {
  font-size: 2.5rem;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--sp-4);
}

.hero__logo {
  display: flex;
  justify-content: center;
  margin-bottom: var(--sp-4);
}

.hero__subtitle {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto var(--sp-8);
}

.hero__actions {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
}

/* ─── Home Sections ────────────────────────────────────── */
.home-section {
  margin-bottom: var(--sp-12);
}

.home-section__title {
  font-size: 1.35rem;
  margin-bottom: var(--sp-6);
}

/* ─── Article Header ─────────────────────────────────────── */
.article-header {
  margin-bottom: var(--sp-6);
}

/* ─── Article Grid ─────────────────────────────────────── */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-6);
}

/* ─── Article Card ─────────────────────────────────────── */
.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
}

.article-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ─── Article Card Close Button ───────────────────────── */
.article-card__close {
  display: none;
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--sp-1);
  z-index: 1;
}

.article-card__close:hover {
  color: var(--color-text);
}

/* ─── Article Card Level Tags (default state) ────────── */
.article-card .tab-nav {
  border-bottom: none;
  margin-bottom: var(--sp-2);
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.article-card .tab-nav__link {
  opacity: 1;
  border: none;
  border-radius: 4px;
  margin-bottom: 0;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.4;
}

.article-card .tab-nav__link[data-level="a1.1"] { background: var(--level-a1);   color: var(--color-text); }
.article-card .tab-nav__link[data-level="a1.2"] { background: var(--level-a1);   color: var(--color-text); }
.article-card .tab-nav__link[data-level="a2.1"] { background: var(--level-a2);   color: #fff; }
.article-card .tab-nav__link[data-level="a2.2"] { background: var(--level-a2);   color: #fff; }
.article-card .tab-nav__link[data-level="b1.1"] { background: var(--level-b1);   color: #fff; }
.article-card .tab-nav__link[data-level="b1.2"] { background: var(--level-b1);   color: #fff; }
.article-card .tab-nav__link[data-level="b2"]   { background: var(--level-b2);   color: #fff; }
.article-card .tab-nav__link[data-level="c1"]   { background: var(--level-c1);   color: #fff; }
.article-card .tab-nav__link[data-level="c2"]   { background: var(--level-c2);   color: #fff; }

.article-card .tab-nav__link--active {
  box-shadow: 0 0 0 2px var(--color-primary);
}

/* ─── Article Card Content (hidden by default) ────────── */
.article-card__content {
  display: none;
}

/* ─── Expanded Card ───────────────────────────────────── */
.article-card--expanded {
  grid-column: 1 / -1;
  cursor: default;
}

.article-card--expanded .tab-nav {
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--sp-4);
  gap: var(--sp-1);
}

.article-card--expanded .tab-nav__link {
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  margin-bottom: -2px;
  padding: var(--sp-2) var(--sp-4);
  font-size: 0.85rem;
  letter-spacing: 0;
  opacity: 0.65;
}

.article-card--expanded .tab-nav__link[data-level] {
  background: transparent;
  color: var(--color-text);
}

.article-card--expanded .tab-nav__link:hover {
  opacity: 1;
}

.article-card--expanded .tab-nav__link--active {
  opacity: 1;
  border-color: var(--color-border);
  border-bottom: 2px solid var(--color-surface);
  background: var(--color-surface);
  box-shadow: none;
}

.article-card--expanded .article-card__content {
  display: block;
}

.article-card--expanded .article-card__close {
  display: block;
}

/* ─── Collapsed Card (other cards when one is expanded) ─ */
.article-card--collapsed {
  opacity: 0;
  max-height: 0;
  min-height: 0;
  overflow: hidden;
  padding: 0;
  border-color: transparent;
  pointer-events: none;
}

.article-card__body {}

.article-card__title {
  font-size: 1.05rem;
  line-height: 1.35;
  margin-bottom: var(--sp-2);
  color: var(--color-text);
}

.article-card__excerpt {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-4);
}

.article-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border);
}

.article-card__footer--stacked {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-2);
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.article-card__topic {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.article-card__date {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.article-card__levels {
  display: flex;
  gap: var(--sp-1);
  flex-shrink: 0;
}

/* ─── News List ────────────────────────────────────────── */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.news-item__badge {
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  margin-top: 2px;
}

.news-item__badge--new {
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
}

.news-item__badge--soon {
  color: var(--color-secondary);
  background: color-mix(in srgb, var(--color-secondary) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-secondary) 25%, transparent);
}

.news-item__badge--announcement {
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.news-item__badge--update {
  color: var(--color-text-muted);
  background: color-mix(in srgb, var(--color-text-muted) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-text-muted) 25%, transparent);
}

.news-item__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.news-item__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.news-item__text {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.news-item__more {
  align-self: flex-start;
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-primary);
  cursor: pointer;
  margin-top: var(--sp-1);
}

.news-item__more:hover {
  color: var(--color-secondary);
}

/* ─── News Modal ────────────────────────────────────────── */
.news-modal {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0;
  max-width: 520px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  background: var(--color-surface);
}

.news-modal::backdrop {
  background: rgba(0, 0, 0, 0.35);
}

.news-modal__inner {
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.news-modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-4);
}

.news-modal__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.news-modal__close {
  flex-shrink: 0;
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  margin-top: -2px;
}

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

.news-modal__date {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0;
}

.news-modal__body {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ─── Confirmation Resend Page ─────────────────────────── */
.resend-card {
  max-width: 460px;
}

.resend-card__lead {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--sp-6);
  text-align: left;
}

.resend-card__counter {
  text-align: center;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: calc(-1 * var(--sp-2));
  margin-bottom: 0;
}

/* ─── FAQ Section (outside card) ───────────────────────── */
.faq-section {
  max-width: 640px;
  margin: var(--sp-4) auto var(--sp-12);
  padding: 0 var(--sp-6);
}

.faq-section__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--sp-4);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: var(--sp-2);
  background: var(--color-surface);
  overflow: hidden;
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  user-select: none;
  gap: var(--sp-4);
}

.faq-item__question::-webkit-details-marker { display: none; }

.faq-item__question::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-text-muted);
  transition: transform 0.15s;
}

details[open] .faq-item__question::after {
  transform: rotate(45deg);
}

.faq-item__answer {
  padding: 0 var(--sp-4) var(--sp-4);
  border-top: 1px solid var(--color-border);
}

.faq-item__answer p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin: var(--sp-3) 0 0;
}

/* ─── Features ─────────────────────────────────────────── */
.features {
  padding: var(--sp-12) 0;
  border-top: 1px solid var(--color-border);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-8);
}

.feature__title {
  font-size: 1rem;
  margin-bottom: var(--sp-2);
}

.feature__text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.feature__link {
  display: inline-block;
  margin-top: var(--sp-2);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary);
}

.feature__link:hover {
  color: var(--color-secondary);
}

/* ─── Auth Page ────────────────────────────────────────── */
.auth-page {
  display: flex;
  justify-content: center;
  padding: var(--sp-12) 0;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--sp-8);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.auth-card__title {
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: var(--sp-6);
}

.auth-card__footer-text {
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-top: var(--sp-6);
}

/* ─── Auth Divider ─────────────────────────────────────── */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin: var(--sp-6) 0;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth-divider span {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── OAuth Buttons ────────────────────────────────────── */
.oauth-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.btn--oauth {
  display: block;
  width: 100%;
  text-align: center;
  padding: var(--sp-2) var(--sp-4);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.btn--oauth:hover {
  border-color: var(--color-primary);
  background: var(--color-bg);
  color: var(--color-text);
}

/* ─── Legal Pages ──────────────────────────────────────── */
.legal-page {
  max-width: 680px;
}

.legal-page h1 {
  margin-bottom: var(--sp-2);
}

.legal-page__updated {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-8);
}

.legal-page h2 {
  font-size: 1.1rem;
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
}

.legal-page p {
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: var(--sp-3);
}

.legal-page ul {
  padding-left: var(--sp-6);
  margin-bottom: var(--sp-3);
}

.legal-page li {
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: var(--sp-2);
}

/* ─── CEFR Levels Page ───────────────────────────────────── */
.cefr-page {
  max-width: 720px;
}

.cefr-page h1 {
  margin-bottom: var(--sp-3);
}

.cefr-page__lead {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-12);
}

.cefr-group {
  margin-bottom: var(--sp-8);
}

.cefr-group__header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--color-border);
}

.cefr-group__pip {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.cefr-group__pip--a1 { background: var(--level-a1); }
.cefr-group__pip--a2 { background: var(--level-a2); }
.cefr-group__pip--b1 { background: var(--level-b1); }
.cefr-group__pip--b2 { background: var(--level-b2); }
.cefr-group__pip--c1 { background: var(--level-c1); }
.cefr-group__pip--c2 { background: var(--level-c2); }

.cefr-group__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

.cefr-group__cards {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

/* ─── CEFR Card (foldable) ───────────────────────────────── */
.cefr-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.cefr-card--a1 { border-left: 4px solid var(--level-a1); }
.cefr-card--a2 { border-left: 4px solid var(--level-a2); }
.cefr-card--b1 { border-left: 4px solid var(--level-b1); }
.cefr-card--b2 { border-left: 4px solid var(--level-b2); }
.cefr-card--c1 { border-left: 4px solid var(--level-c1); }
.cefr-card--c2 { border-left: 4px solid var(--level-c2); }

.cefr-card__summary {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-6);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.cefr-card__summary::-webkit-details-marker { display: none; }

.cefr-card__summary::after {
  content: "+";
  flex-shrink: 0;
  margin-left: auto;
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-text-muted);
  transition: transform 0.15s;
  padding-top: 2px;
}

details[open] .cefr-card__summary::after {
  transform: rotate(45deg);
}

.cefr-card__badge {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}

.cefr-card__badge--a1 { background: var(--level-a1); color: var(--color-text); }
.cefr-card__badge--a2 { background: var(--level-a2); color: #fff; }
.cefr-card__badge--b1 { background: var(--level-b1); color: #fff; }
.cefr-card__badge--b2 { background: var(--level-b2); color: #fff; }
.cefr-card__badge--c1 { background: var(--level-c1); color: #fff; }
.cefr-card__badge--c2 { background: var(--level-c2); color: #fff; }

.cefr-card__header-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.cefr-card__name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.cefr-card__goal-preview {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.cefr-card__body {
  padding: var(--sp-4) var(--sp-6) var(--sp-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.cefr-card__label {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-1);
}

.cefr-card__description {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.cefr-card__example {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text);
  font-style: italic;
  padding: var(--sp-3) var(--sp-4);
  background: var(--color-bg);
  border-radius: 6px;
  border-left: 3px solid var(--color-border);
}

/* ─── Responsive ───────────────────────────────────────── */
@media (max-width: 640px) {
  .hero__title {
    font-size: 1.75rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }

  .article-card__footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .guest-footer__inner {
    flex-direction: column;
    gap: var(--sp-3);
    text-align: center;
  }

  .guest-footer__left {
    flex-direction: column;
    gap: var(--sp-1);
  }
}