:root {
  --accent: #ef4444;
  --muted: #6b7280;
  --card-shadow: 0 8px 24px rgba(16,24,40,0.08);
  --bg-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.02));
}

html, body {
  margin: 0; padding: 0; height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background: #f9fafb;
  color: #111827;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.panel {
  background: rgba(255, 255, 255, 0.86);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  padding: 30px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

/* Titles */
h1.title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 0.5em 0;
}

.subline {
  text-align: center;
  color: var(--muted);
  margin-top: 6px;
  font-size: 0.9rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin: 26px 0 16px 0;
  flex-wrap: wrap;
  user-select: none;
}

.tab {
  position: relative;
  padding: 10px 20px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--muted);
  font-weight: 600;
  transition: all 0.18s ease;
  background: #f3f4f6;
}

.tab.active {
  color: #111827;
  background: #fee2e2;
  box-shadow: 0 2px 10px rgba(239, 68, 68, 0.3);
}

.tab.active::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -12px;
  width: 44%;
  height: 4px;
  background: var(--accent);
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.18);
}

/* Search input */
.search-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.search input {
  width: 100%;
  max-width: 760px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid #e6e9ef;
  box-shadow: 0 4px 12px rgba(2, 6, 23, 0.03);
  outline-offset: 2px;
  outline-color: var(--accent);
  transition: box-shadow 0.18s ease, transform 0.12s ease;
  font-size: 1rem;
  font-family: inherit;
}

.search input:focus {
  box-shadow: 0 8px 26px rgba(14, 30, 80, 0.08);
  transform: translateY(-1px);
  outline-color: var(--accent);
}

/* Photo Grid - uniform square cards */
.grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 18px;
}

@media (min-width: 520px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 880px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1100px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Photo card styling */
.photo-card {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: var(--bg-gradient);
  transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1), box-shadow 0.28s ease;
  cursor: pointer;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  will-change: transform;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

/* Make all images cover the square area */
.photo-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease, opacity 0.28s ease;
}

/* Overlay fades in on hover */
.photo-card .overlay {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.0) 20%, rgba(0, 0, 0, 0.35) 100%);
  opacity: 0;
  transition: opacity 0.22s ease;
  pointer-events: none;
}

/* Meta text bottom left */
.photo-card .meta {
  position: absolute;
  left: 12px;
  bottom: 12px;
  color: white;
  font-weight: 700;
  font-size: 1.05rem;
  text-shadow: 0 6px 18px rgba(0, 0, 0, 0.6);
  transform: translateY(6px);
  opacity: 0;
  transition: transform 0.22s ease, opacity 0.22s ease;
  pointer-events: none;
}

/* Hover effects */
.photo-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(2, 6, 23, 0.12);
}

.photo-card:hover img {
  transform: scale(1.1);
}

.photo-card:hover .overlay {
  opacity: 1;
}

.photo-card:hover .meta {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* Note button top right */
.note-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(255, 255, 255, 0.9);
  padding: 8px;
  border-radius: 999px;
  display: flex;
  gap: 6px;
  align-items: center;
  box-shadow: 0 6px 18px rgba(2, 6, 23, 0.06);
  transform: scale(0.96);
  transition: transform 0.12s ease, opacity 0.12s ease;
  opacity: 0;
  pointer-events: none;
}

.photo-card:hover .note-btn {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

.note-btn svg {
  width: 18px;
  height: 18px;
  color: #111827;
}

/* Modal styles */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: left;
  justify-content: right;
  background: linear-gradient(180deg, rgba(2,6,23,0.6), rgba(2,6,23,0.82));
  z-index: 9999;
  padding: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.modal.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  width: 100%;
  max-width: 1000px;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(2, 6, 23, 0.5);
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 0;
  max-height: 90vh;
}

@media (max-width: 920px) {
  .modal-box {
    grid-template-columns: 1fr;
    max-height: 90vh;
  }
}

.modal-left {
  background: #0f172a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  max-height: 90vh;
  padding: 12px;
}

.modal-left img {
  width: 100%;
  height: auto;
  max-height: 85vh;
  object-fit: contain;
  display: block;
  border-radius: 0;
}

/* Buttons container below image */
.modal-controls {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  justify-content: center;
  width: 100%;
}

.modal-controls button {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  font-family: inherit;
  color: rgba(0, 0, 0, 0.7);
  box-shadow: 0 8px 26px rgba(239, 68, 68, 0.14);
  background: #fee2e2;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.modal-controls button:hover {
  color: #fff;
  background-color: #d43d3d;
}

.modal-right {
  padding: 18px;
  background: linear-gradient(180deg, #ffffff, #fbfbfb);
  overflow-y: auto;
  max-height: 90vh;
  box-sizing: border-box;
}

.modal-right h3 {
  font-weight: 800;
  margin-bottom: 8px;
}

.notes {
  width: 100%;
  height: 160px;
  border-radius: 8px;
  border: 1px solid #e6e9ef;
  padding: 10px;
  resize: none;
  margin-bottom: 10px;
  outline: none;
  font-size: 0.95rem;
  font-family: inherit;
}

#passwordView {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

/* Password input and button styling */
#passwordInput {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid #e6e9ef;
  box-shadow: 0 4px 12px rgba(2, 6, 23, 0.03);
  font-size: 1rem;
  outline-offset: 2px;
  outline-color: var(--accent);
  transition: box-shadow 0.18s ease, transform 0.12s ease;
  font-family: inherit;
}

#passwordInput:focus {
  box-shadow: 0 8px 26px rgba(14, 30, 80, 0.08);
  transform: translateY(-1px);
  outline-color: var(--accent);
}

#enterBtn {
  margin-top: 16px;
  width: 100%;
  padding: 14px 0;
  border-radius: 12px;
  font-weight: 700;
  font-family: inherit;
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 26px rgba(239, 68, 68, 0.38);
  transition: background-color 0.3s ease;
}

#enterBtn:hover {
  background-color: #dc2626;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background-color: var(--accent);
  color: white;
  padding: 14px 24px;
  border-radius: 12px;
  font-weight: 700;
  font-family: inherit;
  box-shadow: 0 12px 48px rgba(239, 68, 68, 0.38);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
  z-index: 99999;
}

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

/* Scrollbar for modal notes */
.modal-right textarea.notes::-webkit-scrollbar {
  width: 10px;
}

.modal-right textarea.notes::-webkit-scrollbar-thumb {
  background-color: var(--accent);
  border-radius: 8px;
}

.modal-right textarea.notes::-webkit-scrollbar-track {
  background: #f1f1f1;
}

/* Accessibility focus outline */
button:focus, input:focus, textarea:focus {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}