:root {
  --tn-bg: #f3f0ea;
  --tn-surface: #fffdf8;
  --tn-ink: #1c2420;
  --tn-muted: #5c6a62;
  --tn-line: #d7d0c4;
  --tn-accent: #0f6b4c;
  --tn-accent-soft: #e4f2eb;
  --tn-danger: #9b2c2c;
  --tn-shadow: 0 18px 40px rgba(28, 36, 32, 0.08);
  --tn-radius: 14px;
  --tn-font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

.tn-vault {
  font-family: var(--tn-font);
  color: var(--tn-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(15, 107, 76, 0.08), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 10%, rgba(196, 154, 78, 0.12), transparent 50%),
    var(--tn-bg);
  border: 1px solid var(--tn-line);
  border-radius: calc(var(--tn-radius) + 4px);
  padding: 1.5rem;
  box-shadow: var(--tn-shadow);
  max-width: 1100px;
  margin: 0 auto;
}

.tn-vault__title {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tn-vault__subtitle {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 650;
}

.tn-vault__notice,
.tn-vault__error {
  color: var(--tn-danger);
  margin: 0.75rem 0 0;
}

.tn-vault__login {
  max-width: 380px;
  margin: 1rem auto;
  padding: 1.5rem;
  background: var(--tn-surface);
  border: 1px solid var(--tn-line);
  border-radius: var(--tn-radius);
}

.tn-vault__label {
  display: block;
  font-size: 0.9rem;
  color: var(--tn-muted);
  margin-bottom: 0.35rem;
}

.tn-vault__input,
.tn-vault__sheet {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--tn-line);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font: inherit;
  background: #fff;
  color: var(--tn-ink);
}

.tn-vault__btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.65rem 1.1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.tn-vault__btn:hover {
  transform: translateY(-1px);
}

.tn-vault__btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.tn-vault__btn--primary {
  background: var(--tn-accent);
  color: #fff;
  margin-top: 0.9rem;
  width: 100%;
}

.tn-vault__btn--secondary {
  background: var(--tn-accent-soft);
  color: var(--tn-accent);
  border-color: #b9d9c8;
  margin-top: 0.75rem;
}

.tn-vault__btn--ghost {
  background: transparent;
  color: var(--tn-muted);
  border-color: var(--tn-line);
}

.tn-vault__btn--danger {
  background: transparent;
  color: var(--tn-danger);
  border-color: #e8c4c4;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}

.tn-vault__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.tn-vault__drop {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem;
  border: 1.5px dashed #b7cfc3;
  border-radius: var(--tn-radius);
  background: var(--tn-accent-soft);
  cursor: pointer;
}

.tn-vault__drop-label {
  font-weight: 700;
  color: var(--tn-accent);
}

.tn-vault__drop-hint {
  color: var(--tn-muted);
  font-size: 0.9rem;
}

.tn-vault__file {
  margin-top: 0.5rem;
}

.tn-vault__upload-status {
  margin: 0.5rem 0 0;
  color: var(--tn-muted);
}

.tn-vault__files {
  margin-top: 1.5rem;
}

.tn-vault__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.tn-vault__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  background: var(--tn-surface);
  border: 1px solid var(--tn-line);
  border-radius: 12px;
}

.tn-vault__item-meta {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.tn-vault__item-name {
  font-weight: 650;
  word-break: break-word;
}

.tn-vault__item-sub {
  color: var(--tn-muted);
  font-size: 0.85rem;
}

.tn-vault__item-actions {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
}

.tn-vault__empty {
  color: var(--tn-muted);
}

.tn-vault__preview {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--tn-line);
}

.tn-vault__preview-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.tn-vault__preview-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.tn-vault__sheet-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--tn-muted);
  font-size: 0.9rem;
}

.tn-vault__sheet {
  width: auto;
  min-width: 140px;
}

.tn-vault__preview-meta {
  color: var(--tn-muted);
  font-size: 0.9rem;
  margin: 0 0 0.65rem;
}

.tn-vault__table-wrap {
  overflow: auto;
  max-height: 60vh;
  border: 1px solid var(--tn-line);
  border-radius: 12px;
  background: #fff;
}

.tn-vault__table {
  border-collapse: collapse;
  width: max-content;
  min-width: 100%;
  font-size: 0.88rem;
}

.tn-vault__table th,
.tn-vault__table td {
  border: 1px solid #ece7de;
  padding: 0.4rem 0.55rem;
  white-space: nowrap;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tn-vault__table tr:first-child th,
.tn-vault__table tr:first-child td {
  background: #f7f3eb;
  font-weight: 650;
  position: sticky;
  top: 0;
  z-index: 1;
}

@media (max-width: 640px) {
  .tn-vault {
    padding: 1rem;
  }

  .tn-vault__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .tn-vault__item {
    flex-direction: column;
    align-items: flex-start;
  }
}