:root {
  --bg-app: #0A0C10;
  --bg-secondary: #12151A;
  --bg-card: #161A20;
  --bg-table: #101317;
  --bg-board: #12151A;
  --bg-board-header: #1A1E25;
  --bg-row: #14171C;
  --bg-row-alt: #171B21;
  --bg-header: #1A1E25;
  --color-primary: #16C6E8;
  --color-primary-dark: #087EA4;
  --color-white: #FFFFFF;
  --text-secondary: #8B94A3;
  --border-color: #232830;
  --color-success: #2ECC8F;
  --color-success-dark: #1B8A5A;
  --color-warning: #F4C542;
  --color-danger: #EF4444;
  --color-pink: #EC4899;
  --color-lime: #84CC16;
  --color-orange: #F97316;
  --color-purple: #A855F7;
  --color-blue: #3B82F6;
  --color-gray: #64748B;
  --secondary-color: #12151A;
  --sidebar-width: 240px;
  --sidebar-width-collapsed: 76px;
}

* {
  box-sizing: border-box;
}

html, body {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.sd-safe-top {
  padding-top: env(safe-area-inset-top);
}
.sd-safe-bottom {
  padding-bottom: env(safe-area-inset-bottom);
}

@media (max-width: 767px) {
  .sd-hide-mobile {
    display: none !important;
  }
}
@media (min-width: 768px) {
  .sd-hide-desktop {
    display: none !important;
  }
}

::-webkit-scrollbar {
  height: 8px;
  width: 8px;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-track {
  background: transparent;
}

.sd-table-wrapper {
  overflow-x: auto;
}
.sd-table-wrapper table {
  border-collapse: separate;
  border-spacing: 0;
  min-width: 100%;
}
.sd-sticky-col {
  position: sticky;
  left: 0;
  z-index: 5;
  background-color: var(--bg-card);
}
.sd-board {
  background-color: var(--bg-board);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.sd-th {
  background-color: var(--bg-board-header);
  color: var(--text-secondary);
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 6;
}
.sd-th:last-child {
  border-right: none;
}
.sd-th.sd-sticky-col {
  z-index: 7;
  background-color: var(--bg-board-header);
}

.sd-td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  height: 48px;
  vertical-align: middle;
}
.sd-td:last-child {
  border-right: none;
}

.sd-row {
  background-color: var(--bg-row);
}
.sd-row-alt {
  background-color: var(--bg-row-alt);
}
.sd-row:hover,
.sd-row-alt:hover {
  background-color: #1b2028;
}

.sd-sticky-col {
  position: sticky;
  left: 0;
  z-index: 5;
  background-color: inherit;
}

.sd-input {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: #fff;
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s ease;
  color-scheme: dark;
}
.sd-input::-webkit-calendar-picker-indicator {
  filter: invert(1);
  opacity: 0.8;
}
.sd-input:focus {
  border-color: var(--color-primary);
}
.sd-input-sm {
  padding: 5px 8px;
  font-size: 12px;
}

.sd-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}
.sd-tag-sm {
  font-size: 11px;
  padding: 3px 8px;
}
.sd-tag-empty {
  background-color: transparent;
  border: 1px dashed var(--border-color);
  color: var(--text-secondary);
  font-weight: 500;
}

.animate-fade-in {
  animation: sd-fade-in 0.2s ease-out;
}
@keyframes sd-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}