* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* Square everything out */
}

body {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: #0b0b0b;
  color: #e5e5e5;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin: 75px auto 60px;
  padding: 0 20px;
}

.header {
  text-align: center;
  margin-bottom: 30px;
}

h1 {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.04em;
  color: #fff;
  margin-bottom: 4px;
}

.subtitle-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.subtitle {
  color: #555;
  text-transform: lowercase;
}

.status-sep {
  color: #333;
}

.backend-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #666;
  font-size: 0.72rem;
  cursor: pointer;
  user-select: none;
  transition: color 0.15s ease;
}

.backend-status:hover {
  color: #999;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: #444;
  display: inline-block;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.backend-status.online {
  color: #4ade80;
}
.backend-status.online .status-dot {
  background: #4ade80;
  box-shadow: 0 0 6px rgba(74, 222, 128, 0.45);
}

.backend-status.offline {
  color: #ff5555;
}
.backend-status.offline .status-dot {
  background: #ff5555;
  box-shadow: 0 0 6px rgba(255, 85, 85, 0.45);
}

.backend-status.checking {
  color: #eab308;
}
.backend-status.checking .status-dot {
  background: #eab308;
}

/* Upload Drop Zone */
.drop-zone {
  border: 1px dashed #2a2a2a;
  padding: 26px 20px;
  background: rgba(15, 15, 15, 0.7);
  backdrop-filter: blur(6px);
  text-align: center;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.drop-zone.dragover {
  border-color: #555;
  background: rgba(24, 24, 24, 0.85);
}

.drop-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  background: #161616;
  color: #ddd;
  border: 1px solid #303030;
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: all 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: #242424;
  border-color: #555;
  color: #fff;
}

.btn:active:not(:disabled) {
  background: #fff;
  color: #000;
  border-color: #fff;
}

.btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-upload {
  background: #1f1f1f;
  border-color: #383838;
}

.file-selection {
  display: none;
  margin-top: 14px;
  font-size: 0.74rem;
  color: #777;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  animation: fadeIn 0.15s ease;
}

.file-selection.active {
  display: block;
}

/* Minimal Square Progress Bar */
.progress-wrap {
  display: none;
  width: 100%;
  height: 2px;
  background: #1c1c1c;
  margin-top: 12px;
  overflow: hidden;
}

.progress-wrap.active {
  display: block;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-3px); }
  to { opacity: 1; transform: translateY(0); }
}

.progress-text {
  margin-top: 8px;
  font-size: 0.72rem;
  color: #777;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* Files Section */
.files-section {
  margin-top: 42px;
}

.files-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid #1c1c1c;
  padding-bottom: 10px;
  margin-bottom: 12px;
}

h2 {
  font-size: 0.76rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #666;
}

.file-count {
  font-size: 0.72rem;
  color: #444;
}

ul {
  list-style: none;
  padding: 0;
}

/* File Card Items */
li.file-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  margin-bottom: 6px;
  background: rgba(17, 17, 17, 0.75);
  border: 1px solid #202020;
  transition: border-color 0.15s ease, background-color 0.15s ease, opacity 0.2s ease;
}

li.file-card:hover {
  background: rgba(24, 24, 24, 0.9);
  border-color: #333;
}

li.file-card.deleting {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.file-info {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
  flex: 1;
}

.file-name {
  color: #e2e2e2;
  font-size: 0.84rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 360px;
}

.file-meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.file-size {
  font-size: 0.7rem;
  color: #555;
  white-space: nowrap;
}

.file-timer {
  font-size: 0.7rem;
  color: #666;
  white-space: nowrap;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.file-timer.warning {
  color: #f59e0b;
}

.file-timer.critical {
  color: #ff5555;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.action-btn {
  padding: 4px 10px;
  font-size: 0.72rem;
  font-family: inherit;
  text-decoration: none;
  background: #141414;
  border: 1px solid #262626;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: all 0.15s ease;
}

.action-download {
  color: #4db8ff;
}

.action-download:hover {
  background: #4db8ff;
  color: #000;
  border-color: #4db8ff;
}

.action-delete {
  color: #666;
}

.action-delete:hover {
  background: #ff5555;
  color: #000;
  border-color: #ff5555;
}

.empty-state {
  text-align: center;
  color: #3a3a3a;
  font-size: 0.78rem;
  padding: 30px 0;
  border: 1px dashed #1a1a1a;
  margin-top: 4px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: #141414;
  border: 1px solid #2f2f2f;
  color: #ccc;
  font-size: 0.75rem;
  padding: 6px 14px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.15s ease;
  z-index: 10;
  letter-spacing: 0.02em;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 520px) {
  .container {
    margin-top: 40px;
    padding: 0 14px;
  }
  
  .file-name {
    max-width: 170px;
  }

  .file-info {
    flex-direction: column;
    gap: 2px;
  }
}