:root {
  --bg: #08111F;
  --surface: #102032;
  --surface-2: #142B45;
  --surface-3: #1B3A5F;
  --border: #1F4067;
  --text: #F0F6FF;
  --text-2: #A8C0DC;
  --muted: #6E89A8;
  --primary: #4A90FF;
  --accent: #00D4FF;
  --error: #FF6B6B;
  --success: #4ADE80;
  --grad: linear-gradient(135deg, #4A90FF, #00D4FF);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(ellipse at 30% -10%, #0F2A4A, var(--bg));
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ── Login ─────────────────────────── */
.login-shell {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.login-card {
  width: 100%; max-width: 380px;
  background: var(--surface); border: 1px solid rgba(255,255,255,0.06);
  border-radius: 24px; padding: 32px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.login-card .icon {
  width: 56px; height: 56px; border-radius: 18px;
  background: var(--grad); display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; box-shadow: 0 8px 24px rgba(74,144,255,0.4);
  font-size: 26px;
}
.login-card h1 {
  margin: 0 0 6px; font-size: 22px; font-weight: 800; text-align: center;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -0.4px;
}
.login-card p { margin: 0 0 24px; text-align: center; color: var(--text-2); font-size: 13px; }
.field { margin-bottom: 12px; }
label.tag {
  display: block; font-size: 11px; font-weight: 700; letter-spacing: 0.8px;
  color: var(--muted); margin-bottom: 6px; text-transform: uppercase;
}
input, select {
  width: 100%; padding: 11px 14px; border-radius: 12px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text); font-size: 14px; font-family: inherit; outline: none;
  transition: border-color 0.15s;
}
input:focus, select:focus { border-color: var(--primary); }
.login-error {
  margin-top: 12px; padding: 10px; border-radius: 10px;
  background: rgba(255,107,107,0.12); border: 1px solid rgba(255,107,107,0.3);
  color: var(--error); font-size: 12px; display: none;
}
.login-error.show { display: block; }

/* ── Buttons ───────────────────────── */
button, .btn {
  background: var(--grad); color: white; border: none;
  padding: 10px 18px; border-radius: 12px; font-weight: 700;
  font-size: 13px; cursor: pointer; font-family: inherit;
  box-shadow: 0 4px 12px rgba(74,144,255,0.35);
  transition: transform 0.1s, opacity 0.1s;
  display: inline-flex; align-items: center; gap: 6px;
}
button:hover { transform: translateY(-1px); }
button:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
button.full { width: 100%; padding: 13px; font-size: 14px; justify-content: center; }
button.ghost {
  background: var(--surface-2); color: var(--text-2);
  border: 1px solid var(--border); box-shadow: none;
}
button.ghost:hover { color: var(--text); border-color: var(--primary); }
button.danger {
  background: rgba(255,107,107,0.15); color: var(--error);
  border: 1px solid rgba(255,107,107,0.3); box-shadow: none;
}
button.danger:hover { border-color: var(--error); }
button.sm { padding: 6px 10px; font-size: 12px; }

/* ── App layout ────────────────────── */
.app {
  display: grid;
  grid-template-rows: 64px 1fr;
  grid-template-columns: 260px 1fr;
  grid-template-areas: "top top" "side main";
  height: 100vh;
}
.topbar {
  grid-area: top;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 0 20px; gap: 24px;
  background: rgba(8, 17, 31, 0.72);
  backdrop-filter: blur(28px) saturate(140%); -webkit-backdrop-filter: blur(28px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 10;
}
.topbar .brand {
  display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 16px;
  letter-spacing: -0.2px;
}
.topbar .brand .dot {
  width: 32px; height: 32px; border-radius: 10px;
  background: var(--grad);
  display: flex; align-items: center; justify-content: center; font-size: 17px;
  box-shadow: 0 6px 16px rgba(74,144,255,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.topbar .brand .name {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.topbar .global-search {
  position: relative; max-width: 480px; width: 100%; justify-self: center;
}
.topbar .global-search input {
  width: 100%; padding: 9px 14px 9px 38px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; color: var(--text); font-size: 13px;
  transition: border-color 0.15s, background 0.15s;
}
.topbar .global-search input:focus {
  border-color: var(--primary);
  background: rgba(74,144,255,0.06);
}
.topbar .global-search::before {
  content: '🔍';
  position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  font-size: 13px; opacity: 0.6;
}
.topbar .actions { display: flex; align-items: center; gap: 8px; }
.topbar .who {
  font-size: 12px; color: var(--text-2); padding: 7px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 100px;
  display: flex; align-items: center; gap: 6px;
  font-weight: 600;
}
.topbar .who::before {
  content: '';
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success); box-shadow: 0 0 8px var(--success);
}
.sidebar {
  grid-area: side;
  background: rgba(8, 17, 31, 0.5);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255,255,255,0.04);
  padding: 18px 12px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 14px;
}
.side-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 8px 0 10px;
}
.side-title {
  font-size: 10px; font-weight: 800; letter-spacing: 1.4px;
  color: var(--muted); text-transform: uppercase;
}
.new-bucket { display: flex; gap: 6px; padding: 0 4px; }
.new-bucket input { padding: 8px 10px; font-size: 12px; }
.new-bucket button { padding: 8px 12px; font-size: 12px; }
.bucket-list { display: flex; flex-direction: column; gap: 4px; }
.bucket {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 11px; cursor: pointer;
  color: var(--text-2); font-weight: 600; font-size: 13px;
  border: 1px solid transparent; transition: all 0.12s;
}
.bucket:hover { background: var(--surface-2); color: var(--text); }
.bucket.active {
  background: rgba(74,144,255,0.15);
  color: white;
  border-color: rgba(74,144,255,0.35);
  box-shadow: 0 2px 12px rgba(74,144,255,0.2);
}
.bucket .ico {
  width: 24px; height: 24px; border-radius: 7px;
  background: var(--surface-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; flex-shrink: 0;
}
.bucket.active .ico { background: var(--grad); }
.bucket .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bucket .count {
  font-size: 11px; color: var(--muted); font-weight: 700;
  background: var(--surface-2); padding: 2px 7px; border-radius: 6px;
}
.bucket.active .count { background: rgba(255,255,255,0.18); color: white; }

.main {
  grid-area: main; padding: 28px 32px 32px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 20px;
}
.main-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
}
.main-head h2 {
  margin: 0; font-size: 26px; font-weight: 800; letter-spacing: -0.6px;
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(135deg, var(--text), var(--text-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.main-head .stats {
  display: flex; gap: 10px; font-size: 12px; color: var(--text-2);
  flex-wrap: wrap;
}
.stat {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  padding: 8px 14px; border-radius: 12px; font-weight: 600;
  display: flex; align-items: baseline; gap: 6px;
  font-size: 11px; letter-spacing: 0.4px;
  text-transform: uppercase; color: var(--muted);
}
.stat strong {
  color: var(--text); font-weight: 800; font-size: 14px;
  text-transform: none; letter-spacing: 0;
}
.toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.toolbar input[type=text] { flex: 1; min-width: 180px; max-width: 320px; }
.toolbar .checkbox {
  display: flex; align-items: center; gap: 6px;
  color: var(--text-2); font-size: 12px;
}
input[type=checkbox] { width: 14px; height: 14px; accent-color: var(--primary); }

.drop-zone {
  border: 2px dashed var(--border); border-radius: 16px;
  padding: 28px 20px; text-align: center; cursor: pointer;
  transition: all 0.15s;
}
.drop-zone:hover { border-color: var(--primary); background: rgba(74,144,255,0.04); }
.drop-zone.dragover {
  border-color: var(--accent); background: rgba(0,212,255,0.08); border-style: solid;
}
.drop-zone .icon {
  font-size: 28px; margin-bottom: 8px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.drop-zone .hint { color: var(--text-2); font-size: 13px; }
.drop-zone .sub { color: var(--muted); font-size: 11px; margin-top: 4px; }

.progress {
  padding: 12px; background: var(--surface);
  border-radius: 12px; border: 1px solid var(--border);
  font-size: 13px; display: none;
}
.progress.show { display: block; }
.progress-bar {
  height: 4px; background: var(--surface-2); border-radius: 2px;
  margin-top: 6px; overflow: hidden;
}
.progress-bar > span {
  display: block; height: 100%; background: var(--grad);
  width: 0%; transition: width 0.2s;
}

.file-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
}
.file-card {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 14px; overflow: hidden;
  display: flex; flex-direction: column;
  transition: all 0.18s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative; cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}
.file-card:hover {
  border-color: rgba(74,144,255,0.5);
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.35), 0 0 0 1px rgba(74,144,255,0.2);
}
.file-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(0,212,255,0.5), 0 8px 20px rgba(0,212,255,0.15);
}
.file-card .preview {
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, var(--surface-2), var(--surface-3));
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 14px;
  overflow: hidden; position: relative;
}
.file-card .preview img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.file-card:hover .preview img { transform: scale(1.06); }
.file-card .preview .ext {
  background: var(--grad); padding: 9px 15px; border-radius: 10px;
  box-shadow: 0 6px 16px rgba(74,144,255,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
  font-size: 13px; letter-spacing: 0.5px;
}
.file-card .info { padding: 11px 13px 13px; }
.file-card .name {
  font-size: 12.5px; font-weight: 600; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  letter-spacing: -0.1px;
}
.file-card .meta {
  font-size: 10.5px; color: var(--muted); margin-top: 3px;
  font-variant-numeric: tabular-nums;
  display: flex; align-items: center; gap: 6px;
}
.file-card .check {
  position: absolute; top: 8px; left: 8px;
  width: 24px; height: 24px; border-radius: 8px;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  border: 1.5px solid rgba(255,255,255,0.7);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 14px; font-weight: 800;
  opacity: 0; transition: all 0.15s;
}
.file-card:hover .check { opacity: 1; }
.file-card.selected .check {
  opacity: 1; background: var(--grad); border-color: transparent;
  box-shadow: 0 4px 10px rgba(74,144,255,0.4);
}
.file-card .row-actions {
  position: absolute; top: 8px; right: 8px;
  display: flex; gap: 4px; opacity: 0;
  transition: opacity 0.15s;
}
.file-card:hover .row-actions { opacity: 1; }
.file-card .row-actions button {
  padding: 6px 9px; font-size: 11px;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: none;
}
.file-card .row-actions button:hover { background: rgba(0,0,0,0.85); }
.file-card .row-actions button.danger {
  background: rgba(255,107,107,0.25);
  border-color: rgba(255,107,107,0.4);
  color: white;
}
.empty {
  text-align: center; padding: 80px 24px; color: var(--muted);
  font-size: 14px; background: rgba(255,255,255,0.02);
  border: 1px dashed rgba(255,255,255,0.08); border-radius: 16px;
}

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--surface); border: 1px solid var(--border);
  padding: 12px 20px; border-radius: 14px; font-size: 13px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
  opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;
  z-index: 100;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast.success { border-color: rgba(74,222,128,0.4); }
.toast.error { border-color: rgba(255,107,107,0.4); }

.modal {
  position: fixed; inset: 0;
  background: rgba(8, 17, 31, 0.92);
  backdrop-filter: blur(24px) saturate(140%); -webkit-backdrop-filter: blur(24px) saturate(140%);
  display: none; align-items: center; justify-content: center;
  z-index: 50;
  animation: modal-bg-in 0.22s ease-out;
}
.modal.show { display: flex; }
@keyframes modal-bg-in { from { opacity: 0; } to { opacity: 1; } }
.modal .body {
  max-width: 92vw; max-height: 92vh;
  background: rgba(15, 25, 45, 0.85);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 22px; overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6);
  animation: modal-pop 0.28s cubic-bezier(0.18, 1.2, 0.4, 1);
}
@keyframes modal-pop {
  from { transform: scale(0.94) translateY(20px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}
/* Modal header — filename + actions + close */
.modal .head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  background: rgba(0,0,0,0.25);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
}
.modal .head .head-icon {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(74,144,255,0.3);
}
.modal .head .head-info { flex: 1; min-width: 0; }
.modal .head .head-name {
  font-size: 13px; font-weight: 700; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.modal .head .head-meta {
  font-size: 11px; color: var(--muted); margin-top: 1px;
  font-variant-numeric: tabular-nums;
}
.modal .head .head-actions { display: flex; gap: 6px; }
.modal .head .head-actions button {
  padding: 7px 12px; font-size: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-2); box-shadow: none;
}
.modal .head .head-actions button:hover {
  color: var(--text); border-color: var(--primary);
}
.modal .head .close {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(255,255,255,0.08); color: var(--text);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; border: none; cursor: pointer;
  flex-shrink: 0; padding: 0;
}
.modal .head .close:hover { background: rgba(255,107,107,0.2); color: var(--error); }
/* Modal content area */
.modal .content {
  flex: 1; min-height: 0;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at center, rgba(74,144,255,0.05), transparent);
  overflow: auto;
}
.modal .content img, .modal .content video {
  max-width: 88vw; max-height: 78vh;
  display: block;
  border-radius: 8px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.modal .text-view {
  width: min(88vw, 900px); max-height: 78vh;
  overflow: auto; padding: 22px 26px;
  background: rgba(8, 17, 31, 0.7);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12.5px; line-height: 1.6; color: var(--text);
  white-space: pre; tab-size: 2;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.04);
}
.modal .text-view .json-key { color: #82B5FF; }
.modal .text-view .json-string { color: #5CE0BD; }
.modal .text-view .json-number { color: #FFB570; }
.modal .text-view .json-bool { color: #FF6CA8; }
.modal .text-view .json-null { color: var(--muted); }
.modal .text-view::-webkit-scrollbar { width: 10px; height: 10px; }
.modal .text-view::-webkit-scrollbar-track { background: transparent; }
.modal .text-view::-webkit-scrollbar-thumb {
  background: var(--surface-3); border-radius: 5px;
}
.modal .text-view::-webkit-scrollbar-thumb:hover { background: var(--primary); }

@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; grid-template-areas: "top" "main"; }
  .sidebar { display: none; }
  .topbar { padding: 0 16px; }
  .main { padding: 16px; }
}