:root {
  --bg: #0d0d12;
  --bg-card: #13131c;
  --bg-surface: #1a1a28;
  --bg-surface2: #212135;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(108, 99, 255, 0.45);
  --border-active: rgba(108, 99, 255, 0.9);

  --accent: #6c63ff;
  --accent-2: #a78bfa;
  --accent-glow: rgba(108, 99, 255, 0.18);

  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;

  --text: #e2e0f0;
  --text-mid: #7e7c99;
  --text-dim: #3e3d55;

  --font-display: "Syne", sans-serif;
  --font-mono: "DM Mono", monospace;

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 24px;
}

/* ── RESET ───────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 1.5rem;
  overflow-x: hidden;
}

/* Faint dot-grid bg */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(
    circle,
    rgba(108, 99, 255, 0.07) 1px,
    transparent 1px
  );
  background-size: 30px 30px;
  pointer-events: none;
  z-index: 0;
}

/* ── LAYOUT ──────────────────────────────────────────────── */
.app-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 680px;
}

/* ── HEADER ──────────────────────────────────────────────── */
.app-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.app-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.app-header h1 span {
  color: var(--accent-2);
  font-style: italic;
}

.app-header p {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-mid);
  letter-spacing: 0.08em;
}

.allowed-types {
  display: inline-flex;
  gap: 6px;
  margin-top: 0.85rem;
}

.type-pill {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--accent-2);
  padding: 0.25rem 0.7rem;
  border-radius: 99px;
}

/* ── DROP ZONE ───────────────────────────────────────────── */
.drop-zone {
  position: relative;
  background: var(--bg-card);
  border: 2px dashed rgba(108, 99, 255, 0.25);
  border-radius: var(--r-xl);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition:
    border-color 0.25s,
    background 0.25s,
    transform 0.18s;
  user-select: none;
  overflow: hidden;
}

/* Corner brackets decoration */
.drop-zone::before,
.drop-zone::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--accent);
  border-style: solid;
  opacity: 0.3;
  transition: opacity 0.25s;
}

.drop-zone::before {
  top: 12px;
  left: 12px;
  border-width: 2px 0 0 2px;
  border-radius: 4px 0 0 0;
}

.drop-zone::after {
  bottom: 12px;
  right: 12px;
  border-width: 0 2px 2px 0;
  border-radius: 0 0 4px 0;
}

/* Extra bracket spans */
.bracket-tr,
.bracket-bl {
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--accent);
  border-style: solid;
  opacity: 0.3;
  transition: opacity 0.25s;
}

.bracket-tr {
  top: 12px;
  right: 12px;
  border-width: 2px 2px 0 0;
  border-radius: 0 4px 0 0;
}

.bracket-bl {
  bottom: 12px;
  left: 12px;
  border-width: 0 0 2px 2px;
  border-radius: 0 0 0 4px;
}

/* Drag-over / hover states */
.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--border-active);
  background: #16162a;
}

.drop-zone.drag-over {
  transform: scale(1.01);
}

.drop-zone.drag-over::before,
.drop-zone.drag-over::after,
.drop-zone.drag-over .bracket-tr,
.drop-zone.drag-over .bracket-bl {
  opacity: 1;
}

/* Glow pulse on drag-over */
.drop-zone.drag-over::before {
  box-shadow: 0 0 0 999px var(--accent-glow);
}

/* Drop zone icon */
.dz-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: var(--bg-surface);
  border: 1.5px solid rgba(108, 99, 255, 0.3);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    transform 0.25s,
    border-color 0.25s,
    background 0.25s;
}

.dz-icon svg {
  width: 28px;
  height: 28px;
}

.drop-zone:hover .dz-icon,
.drop-zone.drag-over .dz-icon {
  transform: translateY(-4px) scale(1.05);
  border-color: var(--accent);
  background: var(--accent-glow);
}

.dz-main {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.dz-sub {
  font-size: 0.78rem;
  color: var(--text-mid);
  letter-spacing: 0.04em;
}

.dz-sub span {
  color: var(--accent-2);
  cursor: pointer;
  transition: color 0.2s;
}

.dz-sub span:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* Hidden file input */
#fileInput {
  display: none;
}

/* ── ERROR BANNER ────────────────────────────────────────── */
.error-banner {
  display: none;
  align-items: center;
  gap: 10px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--r-md);
  padding: 0.75rem 1rem;
  margin-top: 1rem;
  font-size: 0.82rem;
  color: #fca5a5;
  animation: slideDown 0.25s ease;
}

.error-banner.visible {
  display: flex;
}

.error-banner svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--error);
}

/* ── UPLOAD QUEUE ────────────────────────────────────────── */
.upload-queue {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Single upload item */
.upload-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  animation: itemIn 0.3s ease both;
  transition: border-color 0.2s;
}

.upload-item:hover {
  border-color: rgba(108, 99, 255, 0.2);
}

@keyframes itemIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

/* Thumbnail */
.item-thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--r-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  object-fit: cover;
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--r-sm);
}

.item-thumb .thumb-placeholder svg {
  width: 24px;
  height: 24px;
  color: var(--text-dim);
}

/* Item info */
.item-info {
  flex: 1;
  min-width: 0;
}

.item-name {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.2rem;
}

.item-meta {
  font-size: 0.72rem;
  color: var(--text-mid);
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
  flex-wrap: wrap;
}

.item-type {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--accent-2);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Progress track */
.progress-wrap {
  position: relative;
}

.progress-track {
  height: 5px;
  background: var(--bg-surface2);
  border-radius: 99px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 99px;
  width: 0%;
  transition: width 0.1s linear;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
  font-size: 0.7rem;
}

.progress-status {
  color: var(--text-mid);
  letter-spacing: 0.04em;
}

.progress-pct {
  color: var(--accent-2);
  font-weight: 500;
}

/* State: done */
.upload-item.done .progress-fill {
  background: var(--success);
}

.upload-item.done .progress-status {
  color: var(--success);
}

/* State: error */
.upload-item.error .progress-fill {
  background: var(--error);
}

.upload-item.error .progress-status {
  color: #fca5a5;
}

/* Remove button */
.item-remove {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-mid);
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
  font-size: 1rem;
  line-height: 1;
}

.item-remove:hover {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--error);
}

/* ── GALLERY ─────────────────────────────────────────────── */
.gallery-section {
  margin-top: 2.5rem;
}

.gallery-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.gallery-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-mid);
}

.gallery-count {
  font-size: 0.72rem;
  color: var(--accent-2);
  background: var(--accent-glow);
  border: 1px solid rgba(108, 99, 255, 0.2);
  padding: 0.2rem 0.65rem;
  border-radius: 99px;
}

.clear-all {
  font-size: 0.72rem;
  color: var(--text-mid);
  cursor: pointer;
  padding: 0.25rem 0.6rem;
  border-radius: 5px;
  transition:
    color 0.2s,
    background 0.2s;
}

.clear-all:hover {
  color: var(--error);
  background: rgba(239, 68, 68, 0.08);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.gallery-empty {
  padding: 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.82rem;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--r-lg);
  letter-spacing: 0.04em;
}

.gallery-item {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  animation: itemIn 0.3s ease both;
  transition:
    transform 0.2s,
    border-color 0.2s;
}

.gallery-item:hover {
  transform: scale(1.03);
  border-color: rgba(108, 99, 255, 0.3);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-item-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(13, 13, 18, 0.92));
  padding: 0.5rem 0.6rem 0.4rem;
  opacity: 0;
  transform: translateY(4px);
  transition:
    opacity 0.2s,
    transform 0.2s;
}

.gallery-item:hover .gallery-item-info {
  opacity: 1;
  transform: translateY(0);
}

.gi-name {
  font-size: 0.68rem;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gi-size {
  font-size: 0.62rem;
  color: var(--text-mid);
  margin-top: 0.1rem;
}

/* Delete icon on gallery item */
.gi-delete {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  background: rgba(13, 13, 18, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition:
    opacity 0.2s,
    background 0.2s;
  color: var(--text-mid);
}

.gi-delete:hover {
  background: rgba(239, 68, 68, 0.5);
  color: #fff;
}

.gallery-item:hover .gi-delete {
  opacity: 1;
}

/* ── STORAGE BADGE ───────────────────────────────────────── */
.storage-bar-wrap {
  margin-top: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1rem 1.25rem;
}

.storage-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.6rem;
}

.storage-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mid);
}

.storage-nums {
  font-size: 0.72rem;
  color: var(--accent-2);
}

.storage-track {
  height: 5px;
  background: var(--bg-surface2);
  border-radius: 99px;
  overflow: hidden;
}

.storage-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 99px;
  transition: width 0.5s ease;
}

/* ── ANIMATIONS ──────────────────────────────────────────── */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

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

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 500px) {
  body {
    padding: 2rem 1rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }

  .drop-zone {
    padding: 2rem 1.25rem;
  }
}