/* === Header === */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  padding: 16px 32px;
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  border-bottom: 3px solid var(--red);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left .logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-left .logo img {
  height: 32px;
}

.header-left .logo .logo-accent {
  display: none;
}

.header-greeting {
  font-size: 14px;
  color: var(--text-light);
  font-weight: 400;
}

.header-greeting-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--text-light);
  font-weight: 400;
  background: none;
  border: none;
  cursor: pointer;
  padding: 3px 7px;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}

.header-greeting-btn:hover {
  background: var(--cream-dark);
  color: var(--text);
}

.header-center {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: 40px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.week-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.week-select {
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  background: var(--cream);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 28px;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23555' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.week-select:hover {
  border-color: var(--red);
}

.week-select:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 2px rgba(200,16,46,0.12);
}

.week-select option {
  background: var(--white);
  color: var(--text);
}

.upload-timestamp {
  font-size: 12px;
  color: var(--text-light);
}

.header-upload-btn {
  background: var(--red);
  color: var(--white);
  padding: 8px 18px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 1px 3px rgba(200,16,46,0.3);
}

.header-upload-btn:hover {
  background: var(--red-dark);
  box-shadow: 0 2px 8px rgba(200,16,46,0.35);
}

.header-upload-btn svg {
  width: 16px;
  height: 16px;
}

/* === Content === */
.content {
  max-width: 1320px;
  margin: 0 auto;
  padding: 28px 32px;
}

/* === Nav Tabs === */
.nav-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 28px;
  background: var(--white);
  border-radius: 14px;
  padding: 5px;
  box-shadow: var(--shadow);
}

.nav-tabs button {
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: transparent;
  color: var(--text-mid);
  transition: all 0.2s ease;
}

.nav-tabs button:hover:not(.active) {
  color: var(--text);
  background: var(--cream);
}

.nav-tabs button.active {
  background: var(--red);
  color: var(--white);
  box-shadow: 0 2px 6px rgba(200,16,46,0.2);
}

/* === Region Summary === */
.region-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

/* === Store Grid === */
.store-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 18px;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .store-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .store-grid {
    grid-template-columns: 1fr;
  }

  .region-summary {
    grid-template-columns: 1fr 1fr;
  }

  .app-header {
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 16px;
  }

  .header-left .logo img {
    height: 26px;
  }

  .header-center {
    order: 3;
    width: 100%;
    justify-content: center;
    overflow: hidden;
  }

  .week-nav {
    max-width: 100%;
    overflow: hidden;
  }

  .week-select {
    max-width: 180px;
    min-width: 0;
  }

  .header-greeting,
  .header-greeting-btn {
    display: none;
  }

  .content {
    padding: 20px 16px;
  }

  .nav-tabs {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-wrap: nowrap;
    padding: 4px;
  }

  .nav-tabs::-webkit-scrollbar {
    display: none;
  }

  .nav-tabs button {
    padding: 9px 14px;
    font-size: 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }
}

@media (max-width: 480px) {
  .region-summary {
    grid-template-columns: 1fr;
  }
}