/* ===========================
   Design Tokens
   =========================== */
:root {
  --white: #FFFFFF;
  --bg: #F5FAF6;
  --sky-50: #EFF6F0;
  --sky-100: #D9EBD9;
  --sky-200: #A8D5A8;
  --sky-300: #4C9559;
  --sky-400: #3E8249;
  --sky-500: #336E3C;
  --text: #1A1A2E;
  --text-sub: #6B7280;
  --text-light: #9CA3AF;
  --kraft: #F5E6D0;
  --kraft-dark: #E8D5B8;
  --kraft-line: #D4C0A0;
  --stamp-red: #C84B31;
  --tape-blue: rgba(76, 149, 89, 0.35);
  --tape-pink: rgba(255, 182, 193, 0.45);
  --radius: 16px;
  --radius-sm: 8px;
  --shadow-card: 0 2px 16px rgba(76, 149, 89, 0.10);
  --shadow-card-hover: 0 8px 32px rgba(76, 149, 89, 0.20);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-jp: 'Zen Old Mincho', 'Noto Sans KR', serif;
}

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* ===========================
   Header
   =========================== */
.header {
  background: linear-gradient(135deg, var(--white) 0%, var(--sky-50) 100%);
  border-bottom: 1px solid var(--sky-100);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  text-align: center;
}

.header__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 4px;
}

.header__icon {
  font-size: 1.5rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-4px);
  }
}

.header__title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.header__subtitle {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-sub);
  letter-spacing: 0.02em;
}

/* ===========================
   Floating Action Button (FAB)
   =========================== */
.fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 500;
  width: 56px;
  height: 56px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sky-300), var(--sky-400));
  color: var(--white);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(76, 149, 89, 0.12);
}

.fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(76, 149, 89, 0.25);
  background: linear-gradient(135deg, var(--sky-400), var(--sky-500));
}

.fab:active {
  transform: scale(0.95);
}

.fab__icon {
  font-size: 1.6rem;
  font-weight: 300;
  line-height: 1;
}

/* ===========================
   Read-only Mode (Admin Off)
   =========================== */
.readonly-mode .fab,
.readonly-mode .card__back-actions {
  display: none !important;
}

/* ===========================
   Filter & Sort Bar
   =========================== */
.filter-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.tags {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
}

.tags::-webkit-scrollbar {
  display: none;
}

.sort-toggle {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 1.5px solid var(--sky-200);
  border-radius: 50%;
  color: var(--text-sub);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.sort-toggle:hover {
  background: var(--sky-50);
  border-color: var(--sky-300);
  color: var(--sky-400);
  transform: scale(1.05);
}

.sort-toggle svg {
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.sort-toggle--newest svg {
  transform: rotate(180deg);
}

.tag {
  flex-shrink: 0;
  padding: 8px 18px;
  border: 1.5px solid var(--sky-200);
  border-radius: 100px;
  background: var(--white);
  color: var(--text-sub);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.tag:hover {
  background: var(--sky-50);
  border-color: var(--sky-300);
  color: var(--sky-500);
}

.tag--active {
  background: linear-gradient(135deg, var(--sky-300), var(--sky-400));
  border-color: transparent;
  color: var(--white);
  box-shadow: 0 2px 12px rgba(135, 206, 235, 0.3);
}

.tag--active:hover {
  background: linear-gradient(135deg, var(--sky-400), var(--sky-500));
  color: var(--white);
}

/* ===========================
   View Toggle (mobile only)
   =========================== */
.view-toggle {
  display: none;
}

@media (max-width: 600px) {
  .view-toggle {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 4px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px 4px;
  }
}

.view-toggle__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--sky-200);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
}

.view-toggle__btn:hover {
  border-color: var(--sky-300);
  color: var(--sky-400);
}

.view-toggle__btn--active {
  background: linear-gradient(135deg, var(--sky-300), var(--sky-400));
  border-color: transparent;
  color: var(--white);
  box-shadow: 0 2px 8px rgba(135, 206, 235, 0.3);
}

.view-toggle__btn--active:hover {
  background: linear-gradient(135deg, var(--sky-400), var(--sky-500));
  color: var(--white);
}

/* ===========================
   Gallery Grid
   =========================== */
.gallery {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 24px 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ===========================
   Card — 3D Flip Container
   =========================== */
.card {
  perspective: 1200px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(50px);
  will-change: transform, opacity;
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transition-delay: var(--stagger, 0s);
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card__inner {
  position: relative;
  width: 100%;
  transition: transform 0.7s cubic-bezier(0.4, 0.0, 0.2, 1);
  transform-style: preserve-3d;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.card:hover .card__inner {
  box-shadow: var(--shadow-card-hover);
}

.card--flipped .card__inner {
  transform: rotateY(180deg);
}

/* ===========================
   Card — Front Face
   =========================== */
.card__front,
.card__back {
  width: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  overflow: hidden;
}

.card__front {
  background: var(--white);
}

.card__back {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  transform: rotateY(180deg);
}

.card__img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  overflow: hidden;
}

.card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card__img {
  transform: scale(1.05);
}

.card--flipped:hover .card__img {
  transform: none;
}

.card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 16px 12px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.5) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover .card__overlay {
  opacity: 1;
}

.card--flipped:hover .card__overlay {
  opacity: 0;
}

@media (max-width: 600px) {
  .card__overlay {
    opacity: 1;
  }

  .card--flipped .card__overlay {
    opacity: 0;
  }
}

.card__overlay-location {
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  gap: 4px;
}



/* ===========================
   Card — Back Face (Japanese Diary)
   =========================== */
.card__back {
  background: var(--kraft);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0;
  /* Subtle paper texture */
  background-image:
    repeating-linear-gradient(0deg,
      transparent,
      transparent 27px,
      var(--kraft-line) 27px,
      var(--kraft-line) 28px);
}

/* Masking tape decoration — top */
.card__back::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 80px;
  height: 24px;
  background: var(--tape-blue);
  border-radius: 2px;
  z-index: 2;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* Masking tape decoration — bottom */
.card__back::after {
  content: '';
  position: absolute;
  bottom: -4px;
  right: 20%;
  transform: rotate(3deg);
  width: 60px;
  height: 20px;
  background: var(--tape-pink);
  border-radius: 2px;
  z-index: 2;
}

.card__back-content {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 32px 24px;
  z-index: 1;
}

/* Stamp circle */
.card__back-stamp {
  width: 72px;
  height: 72px;
  border: 3px solid var(--stamp-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transform: rotate(-8deg);
  position: relative;
}

.card__back-stamp::after {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1.5px solid var(--stamp-red);
  border-radius: 50%;
  opacity: 0.5;
}

.card__back-stamp-text {
  font-family: var(--font-jp);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--stamp-red);
  text-align: center;
  letter-spacing: 0.05em;
  line-height: 1.2;
}

/* Date — vertical Japanese style */
.card__back-date {
  font-family: var(--font-jp);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.15em;
  margin-bottom: 6px;
}

.card__back-location {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-sub);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Diary line divider */
.card__back-divider {
  width: 48px;
  height: 1px;
  background: var(--kraft-line);
  margin-bottom: 16px;
}

.card__back-memo {
  font-family: var(--font-jp);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text);
  line-height: 1.9;
  text-align: center;
  max-width: 90%;
  word-break: keep-all;
}

/* Blog URL button on back */
.card__back-blog {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  padding: 8px 16px;
  border: 1.5px solid var(--sky-300);
  border-radius: 100px;
  background: var(--white);
  color: var(--sky-400);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  z-index: 3;
}

.card__back-blog:hover {
  background: linear-gradient(135deg, var(--sky-300), var(--sky-400));
  border-color: transparent;
  color: var(--white);
  transform: scale(1.05);
  box-shadow: 0 3px 12px rgba(135, 206, 235, 0.3);
}

/* Action buttons group on back */
.card__back-actions {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  gap: 6px;
  z-index: 3;
}

.card__back-edit,
.card__back-delete {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.06);
  color: var(--text-light);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card__back-edit:hover {
  background: rgba(76, 149, 89, 0.15);
  color: var(--sky-300);
  transform: scale(1.1);
}

.card__back-delete:hover {
  background: rgba(200, 75, 49, 0.12);
  color: var(--stamp-red);
  transform: scale(1.1);
}

/* Flip hint on front */
.card__flip-hint {
  position: absolute;
  bottom: 8px;
  right: 10px;
  font-size: 0.65rem;
  color: var(--text-light);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: center;
  gap: 3px;
}

.card:hover .card__flip-hint {
  opacity: 1;
}

.card--flipped .card__flip-hint {
  opacity: 0;
}

/* ===========================
   Upload Modal
   =========================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.modal-overlay--active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: 20px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.2);
  animation: modalIn 0.35s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px 0;
}

.modal__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.modal__close {
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
  transition: var(--transition);
}

.modal__close:hover {
  color: var(--text);
  transform: scale(1.1);
}

/* ===========================
   Upload Form
   =========================== */
.upload-form {
  padding: 20px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.upload-form__dropzone {
  border: 2px dashed var(--sky-200);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--sky-50);
}

.upload-form__dropzone:hover,
.upload-form__dropzone--dragover {
  border-color: var(--sky-400);
  background: var(--sky-100);
}

.upload-form__dropzone-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 8px;
}

.upload-form__dropzone-text {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-sub);
}

.upload-form__dropzone-hint {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* File preview thumbnails */
.upload-form__preview {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.upload-form__preview-item {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.upload-form__preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.upload-form__preview-remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.5);
  color: var(--white);
  font-size: 0.65rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.upload-form__preview-remove:hover {
  background: var(--stamp-red);
}

/* ===========================
   Edit Image Zone (Image Replace)
   =========================== */
.edit-image-zone {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 280px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--sky-50);
  border: 2px solid var(--sky-200);
  transition: var(--transition);
}

.edit-image-zone:hover {
  border-color: var(--sky-400);
}

.edit-image-zone__preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.edit-image-zone__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.edit-image-zone:hover .edit-image-zone__overlay {
  opacity: 1;
}

.edit-image-zone__overlay-icon {
  font-size: 1.6rem;
}

.edit-image-zone__overlay-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.02em;
}

.edit-image-zone--changed {
  border-color: var(--sky-400);
  box-shadow: 0 0 0 3px rgba(76, 149, 89, 0.15);
}

.upload-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.upload-form__row {
  display: flex;
  gap: 8px;
}

.upload-form__input,
.upload-form__select,
.upload-form__textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--sky-200);
  border-radius: var(--radius-sm);
  background: var(--white);
  font-family: var(--font);
  font-size: 0.88rem;
  color: var(--text);
  transition: var(--transition);
  outline: none;
}

.upload-form__input:focus,
.upload-form__select:focus,
.upload-form__textarea:focus {
  border-color: var(--sky-400);
  box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.15);
}

.upload-form__select {
  min-width: 120px;
  flex-shrink: 0;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.upload-form__textarea {
  resize: vertical;
  min-height: 72px;
}

.upload-form__submit {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--sky-300), var(--sky-500));
  color: var(--white);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 4px;
}

.upload-form__submit:hover {
  background: linear-gradient(135deg, var(--sky-400), var(--sky-500));
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(135, 206, 235, 0.35);
}

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

/* ===========================
   Delete Confirm Modal
   =========================== */
.delete-confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.delete-confirm-overlay--active {
  opacity: 1;
  visibility: visible;
}

.delete-confirm {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px 24px;
  text-align: center;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
  animation: modalIn 0.3s ease;
  min-width: 260px;
  max-width: 320px;
}

.delete-confirm__icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.delete-confirm__text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.5;
}

.delete-confirm__actions {
  display: flex;
  gap: 10px;
}

.delete-confirm__btn {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.delete-confirm__btn--cancel {
  background: var(--sky-50);
  color: var(--text-sub);
  border: 1.5px solid var(--sky-200);
}

.delete-confirm__btn--cancel:hover {
  background: var(--sky-100);
  border-color: var(--sky-300);
}

.delete-confirm__btn--ok {
  background: var(--stamp-red);
  color: var(--white);
}

.delete-confirm__btn--ok:hover {
  background: #b04228;
  transform: translateY(-1px);
  box-shadow: 0 3px 12px rgba(200, 75, 49, 0.3);
}

.delete-confirm__btn--ok:active {
  transform: translateY(0);
}

/* ===========================
   Footer
   =========================== */
.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  padding: 32px 24px;
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 300;
}

.footer__instagram {
  color: var(--text-light);
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.footer__instagram:hover {
  color: var(--sky-400);
  transform: scale(1.1);
}

/* ===========================
   Empty State
   =========================== */
.gallery__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-sub);
}

.gallery__empty-icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.gallery__empty-text {
  font-size: 0.9rem;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
  .gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .header__inner {
    padding: 16px 20px;
  }

  .header__title {
    font-size: 1.2rem;
  }

  .header__subtitle {
    font-size: 0.78rem;
  }

  .tags {
    padding: 12px 20px;
  }

  .gallery {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 4px 16px 32px;
  }

  .gallery--grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }



  .card__back-content {
    padding: 24px 16px;
  }

  .card__back-stamp {
    width: 56px;
    height: 56px;
    margin-bottom: 14px;
  }

  .card__back-stamp-text {
    font-size: 0.6rem;
  }

  .card__back-date {
    font-size: 0.95rem;
  }

  .card__back-memo {
    font-size: 0.75rem;
    line-height: 1.8;
  }

  .modal {
    border-radius: 16px;
    max-height: 95vh;
  }

  .modal__header {
    padding: 20px 20px 0;
  }

  .upload-form {
    padding: 16px 20px 24px;
    gap: 12px;
  }

  .upload-form__dropzone {
    padding: 24px 16px;
  }

  .upload-form__row {
    flex-direction: column;
  }

  .add-btn {
    width: 30px;
    height: 30px;
    border-radius: 8px;
  }

  .add-btn__icon {
    font-size: 1.1rem;
  }
}