/* Guestbook — birthday-themed message board */

/* ── Shell ──────────────────────────────────────────────────────────────── */
.guestbook-page .gb-shell {
  max-width: min(96vw, 720px);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ── Intro ──────────────────────────────────────────────────────────────── */
.gb-intro {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-8);
}

.gb-intro__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.gb-intro__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.gb-intro__title {
  font-family: var(--font-display, var(--font-serif));
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--text);
  margin: 0 0 var(--space-3);
}

.gb-intro__desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 44ch;
  margin: 0;
  line-height: 1.6;
}

/* ── Form ───────────────────────────────────────────────────────────────── */
.gb-form-section {
  margin-bottom: var(--space-10);
}

.gb-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.gb-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 560px) {
  .gb-form__row {
    grid-template-columns: 1fr;
  }
}

.gb-form__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.gb-form__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}

.gb-form__optional {
  font-weight: 400;
  color: var(--text-subtle);
}

.gb-form__input,
.gb-form__textarea {
  appearance: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font: inherit;
  font-size: 0.92rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.gb-form__input:focus,
.gb-form__textarea:focus {
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}

.gb-form__input::placeholder,
.gb-form__textarea::placeholder {
  color: var(--text-subtle);
}

.gb-form__textarea {
  resize: vertical;
  min-height: 100px;
}

.gb-form__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gb-form__char-count {
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-variant-numeric: tabular-nums;
}

.gb-form__submit {
  appearance: none;
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  padding: 0.65rem 2rem;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.gb-form__submit:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.gb-form__submit:active {
  transform: translateY(0);
}

.gb-form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ── Avatar Picker ──────────────────────────────────────────────────────── */
.gb-avatar-picker {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.gb-avatar-preview {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid var(--border);
  transition: border-color var(--transition), transform var(--transition);
  flex-shrink: 0;
}

.gb-avatar-preview:hover {
  border-color: var(--accent);
  transform: scale(1.08);
}

.gb-avatar-preview__img {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-elev-2);
}

.gb-avatar-style {
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

/* ── Messages List ──────────────────────────────────────────────────────── */
.gb-messages {
  padding-bottom: var(--space-16);
}

.gb-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.gb-empty {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.gb-empty p {
  margin: 0;
}

/* ── Card ───────────────────────────────────────────────────────────────── */
.gb-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.gb-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.gb-card--new {
  animation: gbSlideIn 0.4s var(--ease-emphasis) forwards;
}

@keyframes gbSlideIn {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gb-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.gb-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.gb-card__avatar--default {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.gb-card__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.gb-card__name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text);
}

.gb-card__time {
  font-size: 0.75rem;
  color: var(--text-subtle);
  font-variant-numeric: tabular-nums;
}

.gb-card__body {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
  white-space: pre-wrap;
}