/* ============================================
   GALERIE — Design System
   Minimalist, dark, refined
   ============================================ */

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

:root {
  --bg:          #0b0b0f;
  --bg-card:     #141418;
  --bg-card-hover: #1c1c22;
  --bg-overlay:  rgba(5, 5, 8, 0.92);
  --border:      rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text:        #e8e8ec;
  --text-muted:  #7a7a88;
  --text-dim:    #50505c;
  --accent:      #a78bfa;
  --accent-soft: rgba(167, 139, 250, 0.12);
  --radius:      10px;
  --radius-lg:   14px;
  --transition:  0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- Login Screen --- */
.login {
  position: fixed;
  inset: 0;
  z-index: 5000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.login.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.login__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2.5rem 2.5rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 340px;
  animation: fadeUp 0.5s ease both;
}

.login__icon {
  color: var(--accent);
  opacity: 0.7;
}

.login__title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.login__input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}

.login__input:focus {
  border-color: rgba(167, 139, 250, 0.4);
  background: rgba(255, 255, 255, 0.06);
}

.login__input::placeholder {
  color: var(--text-dim);
}

.login__error {
  font-size: 0.78rem;
  color: #f87171;
  min-height: 1.1em;
  transition: opacity var(--transition);
}

.login__error:empty {
  opacity: 0;
}

.login__submit {
  width: 100%;
  padding: 0.65rem;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.login__submit:hover {
  background: rgba(167, 139, 250, 0.2);
  border-color: rgba(167, 139, 250, 0.35);
}

.login__submit:active {
  transform: scale(0.98);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.login__card.shake {
  animation: shake 0.4s ease;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 15, 0.82);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 2rem;
}

.header__title {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.5rem;
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  text-decoration: none;
  color: var(--text-muted);
  transition: color var(--transition);
  cursor: pointer;
  background: none;
  border: none;
  font: inherit;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

.breadcrumb__item:hover {
  color: var(--text);
  background: var(--accent-soft);
}

.breadcrumb__item--active {
  color: var(--text);
  cursor: default;
  pointer-events: none;
}

.breadcrumb__separator {
  color: var(--text-dim);
  font-size: 0.7rem;
  user-select: none;
}

/* --- Gallery Grid --- */
.gallery {
  padding: 1.75rem 2rem 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  animation: fadeUp 0.4s ease both;
}

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

/* --- Card (shared) --- */
.card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

/* --- Folder Card --- */
.card--folder {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
}

.card--folder .card__icon {
  color: var(--accent);
  opacity: 0.7;
  transition: opacity var(--transition), transform var(--transition);
}

.card--folder:hover .card__icon {
  opacity: 1;
  transform: scale(1.08);
}

.card--folder .card__label {
  font-size: 0.8rem;
  font-weight: 500;
  text-align: center;
  padding: 0 0.75rem;
  color: var(--text-muted);
  transition: color var(--transition);
  word-break: break-word;
  line-height: 1.3;
}

.card--folder:hover .card__label {
  color: var(--text);
}

/* --- Media Card (image / video) --- */
.card--media {
  aspect-ratio: 1;
}

.card--media .card__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card--media:hover .card__thumb {
  transform: scale(1.04);
}

.card--media .card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.25);
  transition: background var(--transition);
}

.card--media:hover .card__play {
  background: rgba(0, 0, 0, 0.4);
}

.card--media .card__play svg {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
  transition: transform var(--transition);
}

.card--media:hover .card__play svg {
  transform: scale(1.1);
}

.card--media .card__name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 0.75rem 0.6rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.8);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  transition: opacity var(--transition);
}

.card--media:hover .card__name {
  opacity: 1;
}

/* --- Video Fallback (unsupported codec) --- */
.card__fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  color: var(--text-dim);
  z-index: 1;
}

.card__fallback span {
  font-size: 0.7rem;
  text-align: center;
  word-break: break-word;
  line-height: 1.3;
  color: var(--text-muted);
}

.lightbox__fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  color: var(--text-dim);
  padding: 3rem;
  text-align: center;
}

.lightbox__fallback p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.lightbox__download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition);
}

.lightbox__download:hover {
  background: rgba(167, 139, 250, 0.2);
  border-color: rgba(167, 139, 250, 0.35);
}

/* --- Empty State --- */
.empty-state {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 6rem 2rem;
  color: var(--text-dim);
  animation: fadeUp 0.4s ease both;
}

.empty-state.visible {
  display: flex;
}

.empty-state p {
  font-size: 0.9rem;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg-overlay);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox__content {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__content img,
.lightbox__content video {
  max-width: 90vw;
  max-height: 82vh;
  border-radius: var(--radius-lg);
  object-fit: contain;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: lbFadeIn 0.3s ease both;
}

@keyframes lbFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.lightbox__close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: var(--text);
  font-size: 1.3rem;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 10;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: rotate(90deg);
}

.lightbox__btn {
  position: absolute;
  top: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 10;
  text-decoration: none;
}

.lightbox__btn:hover {
  background: rgba(255, 255, 255, 0.12);
}

.lightbox__btn--download {
  right: 4.5rem;
}

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

.lightbox__btn--rotate {
  right: 7.5rem;
  display: none;
}

.lightbox__btn--rotate.visible {
  display: flex;
}

.lightbox__btn--rotate:hover {
  transform: rotate(-45deg);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 10;
}

.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.12);
}

.lightbox__nav--prev {
  left: 1.25rem;
}
.lightbox__nav--prev:hover {
  transform: translateY(-50%) translateX(-2px);
}

.lightbox__nav--next {
  right: 1.25rem;
}
.lightbox__nav--next:hover {
  transform: translateY(-50%) translateX(2px);
}

.lightbox__caption {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.4);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  white-space: nowrap;
  max-width: 80vw;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lightbox__counter {
  position: absolute;
  top: 1.4rem;
  left: 1.5rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

/* --- Loader --- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.3s ease;
}

.loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader__spinner {
  width: 28px;
  height: 28px;
  border: 2px solid rgba(255, 255, 255, 0.08);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .header {
    padding: 1rem 1.25rem;
  }
  .gallery {
    padding: 1.25rem;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
  }
  .lightbox__nav--prev { left: 0.5rem; }
  .lightbox__nav--next { right: 0.5rem; }
}

@media (max-width: 480px) {
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 0.5rem;
  }
}

@media (min-width: 1400px) {
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}