/* ============================================
   Reusable components: nav, buttons, footer, modal
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: var(--white);
  background: color-mix(in srgb, var(--white) 86%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(79, 159, 216, 0.08);
}

.nav-inner {
  width: min(1240px, calc(100% - 36px));
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.92rem;
  white-space: nowrap;
}

.logo-heart {
  color: var(--accent);
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-links a {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  font-weight: 600;
  padding: 8px 9px;
  border-radius: 999px;
  color: var(--gray);
  transition: 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--light-pink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle,
.menu-toggle,
.back-top {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: 0.25s ease;
}

.theme-toggle:hover,
.menu-toggle:hover,
.back-top:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.menu-toggle {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 22px rgba(79, 159, 216, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--pink);
}

.btn-small {
  padding: 9px 16px;
  font-size: 0.85rem;
}

.footer {
  margin-top: 40px;
  background: var(--card);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 28px;
}

.footer h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.footer p,
.footer a {
  color: var(--gray);
  font-size: 0.92rem;
}

.footer a:hover {
  color: var(--accent);
}

.footer-links {
  display: grid;
  gap: 7px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--gray);
  font-size: 0.86rem;
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  opacity: 0;
  pointer-events: none;
  z-index: 50;
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(45, 37, 48, 0.45);
  display: none;
  place-items: center;
  z-index: 1200;
  padding: 24px;
}

.modal.open {
  display: grid;
  animation: fadein 0.25s ease;
}

.modal-card {
  width: min(680px, 100%);
  background: var(--card);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.modal-art {
  min-height: 280px;
}

.modal-body {
  padding: 22px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow-soft);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--soft-pink);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 14px;
  outline: none;
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--accent);
}

.field .error {
  color: #c45c6e;
  font-size: 0.78rem;
  min-height: 1.1em;
  margin-top: 4px;
}

.form-success {
  display: none;
  background: var(--light-pink);
  color: var(--accent);
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 14px;
  font-weight: 600;
}

.mobile-overlay {
  display: none;
}

.heart-deco {
  color: var(--accent);
}