.hidden { display: none !important; }

/* ── Auth widget (top-right, page-level) ── */
#auth-widget {
  position: absolute;
  top: 16px;
  right: 20px;
  z-index: 1000;
}

.auth-btn {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: #111;
  color: #fff;
  border: none;
  padding: 8px 16px;
  cursor: pointer;
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 70px;
  height: 36px;
}
.auth-btn:hover { background: #333; }

.auth-initials {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: #fff;
  color: #111;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  font-family: 'Source Serif 4', Georgia, serif;
}

/* ── Dropdown ── */
.auth-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: #fff;
  border: 1px solid #111;
  padding: 14px 16px;
  min-width: 190px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  border-radius: 2px;
}
.auth-dropdown p {
  font-size: 13px;
  color: #555;
  margin: 0 0 12px;
  font-family: 'Source Serif 4', Georgia, serif;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.auth-dropdown button {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: none;
  border: 1px solid #111;
  padding: 6px 12px;
  cursor: pointer;
  width: 100%;
  border-radius: 2px;
}
.auth-dropdown button:hover { background: #111; color: #fff; }

/* ── Modal overlay ── */
.auth-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-modal-box {
  background: #fff;
  border: 1px solid #111;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  position: relative;
  border-radius: 2px;
}

.auth-modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: #aaa;
  line-height: 1;
  padding: 4px;
}
.auth-modal-close:hover { color: #111; }

.auth-modal-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 900;
  margin: 0 0 24px;
  text-align: center;
}

/* ── Tabs ── */
.auth-tabs {
  display: flex;
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 20px;
}
.auth-tab {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 8px;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #aaa;
  cursor: pointer;
}
.auth-tab.active { color: #111; border-bottom-color: #111; }

/* ── Google button ── */
.auth-google-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px;
  border: 1px solid #ddd;
  background: #fff;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 14px;
  cursor: pointer;
  border-radius: 2px;
}
.auth-google-btn:hover { background: #f5f5f5; border-color: #bbb; }

/* ── Divider ── */
.auth-divider {
  text-align: center;
  margin: 16px 0;
  position: relative;
}
.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  border-top: 1px solid #e0e0e0;
}
.auth-divider span {
  position: relative;
  background: #fff;
  padding: 0 10px;
  font-size: 12px;
  color: #aaa;
  font-family: 'Source Serif 4', Georgia, serif;
}

/* ── Form ── */
.auth-field { margin-bottom: 14px; }
.auth-field label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #777;
  margin-bottom: 6px;
  font-family: 'Source Serif 4', Georgia, serif;
}
.auth-field input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid #ddd;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 15px;
  border-radius: 2px;
  box-sizing: border-box;
}
.auth-field input:focus { outline: none; border-color: #111; }

.auth-error {
  font-size: 13px;
  color: #c0392b;
  margin-bottom: 12px;
  font-family: 'Source Serif 4', Georgia, serif;
}

.auth-submit-btn {
  width: 100%;
  background: #111;
  color: #fff;
  border: none;
  padding: 11px;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 2px;
  margin-top: 4px;
}
.auth-submit-btn:hover { background: #333; }

/* ── Chapter gate ── */
#auth-gate {
  max-width: 700px;
  margin: 48px auto 80px;
  padding: 0 24px;
}

.auth-gate-box {
  border: 1px solid #e0e0e0;
  border-top: 4px solid #111;
  padding: 48px 40px;
  text-align: center;
  border-radius: 2px;
}

.auth-gate-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #888;
  margin: 0 0 16px;
  font-family: 'Source Serif 4', Georgia, serif;
}

.auth-gate-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  margin: 0 0 16px;
  line-height: 1.1;
}

.auth-gate-desc {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1rem;
  color: #555;
  max-width: 400px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

/* ── TOC lock icons ── */
.lock-icon {
  display: inline-block;
  margin-left: 5px;
  font-size: 0.68em;
  opacity: 0.38;
  filter: grayscale(1);
  vertical-align: middle;
  line-height: 1;
}

/* ── TOC progress badges ── */
.prog-badge {
  margin-left: 8px;
  font-size: 11px;
  font-weight: 600;
  color: #999;
  font-family: 'Source Code Pro', monospace;
}
.prog-badge--done { color: #27ae60; }

/* ── Language switcher ───────────────────────────────────────────── */
#lang-switcher {
  position: absolute;
  top: 16px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 4px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 5px 10px;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  z-index: 900;
}
.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: #aaa;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 0 2px;
  line-height: 1;
}
.lang-btn--active { color: #111; }
.lang-btn:hover:not(.lang-btn--active) { color: #555; }
.lang-btn:disabled {
  cursor: default;
  opacity: 1;
}
.lang-sep { color: #ccc; font-size: 11px; pointer-events: none; }

@media (max-width: 700px) {
  #lang-switcher {
    top: 8px;
    left: 10px;
    padding: 4px 8px;
  }

  #auth-widget {
    top: 8px;
    right: 10px;
  }

  .auth-btn {
    min-width: 58px;
    height: 34px;
    padding: 6px 12px;
    font-size: 11px;
  }

  .auth-initials {
    width: 24px;
    height: 24px;
    font-size: 11px;
  }

  header {
    padding-top: 96px;
  }
}