:root {
  --bg: #070a10;
  --panel: rgba(19, 25, 36, 0.72);
  --panel-strong: rgba(24, 32, 46, 0.92);
  --line: rgba(148, 168, 200, 0.16);
  --line-strong: rgba(148, 168, 200, 0.3);
  --text: #eef3fb;
  --muted: #93a1b8;
  --accent: #55e6c1;
  --accent-2: #4ba3ff;
  --accent-soft: rgba(85, 230, 193, 0.14);
  --danger: #ff6b7d;
  --warning: #ffcf6a;
  --radius: 20px;
  --radius-sm: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.34);
  font-family:
    "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(75, 163, 255, 0.16), transparent 58%),
    radial-gradient(900px 600px at 95% 8%, rgba(85, 230, 193, 0.13), transparent 55%),
    linear-gradient(180deg, #080c14 0%, #070a10 55%, #06080d 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.ambient {
  position: fixed;
  border-radius: 999px;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.45;
  z-index: 0;
}

.ambient-one {
  width: 380px;
  height: 380px;
  left: -160px;
  top: 150px;
  background: rgba(75, 163, 255, 0.2);
}

.ambient-two {
  width: 440px;
  height: 440px;
  right: -220px;
  top: 40px;
  background: rgba(85, 230, 193, 0.13);
}

.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  color: inherit;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 15px;
  color: #07120f;
  background: linear-gradient(145deg, var(--accent), #9ff7df 52%, var(--accent-2));
  box-shadow: 0 10px 30px rgba(85, 230, 193, 0.25);
  flex: none;
}

.brand-mark svg {
  width: 30px;
  height: 30px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-text strong {
  font-size: 21px;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.brand-text small {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.net-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 17, 26, 0.62);
  color: var(--muted);
  font-size: 12.5px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: border-color 0.2s, color 0.2s;
}

.net-status .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
  box-shadow: 0 0 0 4px rgba(255, 207, 106, 0.12);
}

.net-status.is-online {
  color: #c7ffef;
  border-color: rgba(85, 230, 193, 0.28);
}

.net-status.is-online .status-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(85, 230, 193, 0.14), 0 0 16px rgba(85, 230, 193, 0.7);
}

.net-status.is-offline {
  color: #ffd6dc;
  border-color: rgba(255, 107, 125, 0.3);
}

.net-status.is-offline .status-dot {
  background: var(--danger);
  box-shadow: 0 0 0 4px rgba(255, 107, 125, 0.13);
}

.layout {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding-bottom: 34px;
}

.panel {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 38%);
}

.section-head {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 17px;
}

.section-head h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.section-hint {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.45;
}

.count-badge {
  display: inline-grid;
  place-items: center;
  min-width: 25px;
  height: 23px;
  padding: 0 7px;
  border-radius: 8px;
  color: #08211b;
  background: var(--accent);
  font-size: 12px;
  font-weight: 750;
  box-shadow: 0 0 18px rgba(85, 230, 193, 0.25);
}

.head-actions {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: none;
}

.primary,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 40px;
  padding: 0 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  transition:
    transform 0.15s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    opacity 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.primary {
  color: #061410;
  background: linear-gradient(150deg, #7ff2d5, var(--accent) 55%, #36cfae);
  box-shadow: 0 8px 24px rgba(85, 230, 193, 0.18);
}

.primary svg {
  width: 18px;
  height: 18px;
}

.ghost {
  color: #c2cee2;
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.ghost:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.06);
}

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

.primary:active,
.ghost:active {
  transform: translateY(0) scale(0.98);
}

.small {
  height: 34px;
  padding: 0 12px;
  font-size: 12.5px;
  border-radius: 10px;
}

button:focus-visible,
.file-card:focus-visible,
.device-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Devices */
.device-list {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 2px 2px 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 168, 200, 0.3) transparent;
}

.device-list::-webkit-scrollbar {
  height: 6px;
}

.device-list::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background: rgba(148, 168, 200, 0.26);
}

.device-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  width: 232px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012)),
    rgba(9, 14, 22, 0.56);
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
  overflow: hidden;
}

.device-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(120px 80px at 50% 0%, rgba(85, 230, 193, 0.18), transparent 70%);
  transition: opacity 0.18s ease;
}

.device-card.is-self {
  border-style: dashed;
  border-color: rgba(75, 163, 255, 0.34);
  background: rgba(75, 163, 255, 0.055);
}

.device-card.is-drop-target {
  cursor: copy;
}

.device-card.is-drop-target:hover {
  border-color: rgba(85, 230, 193, 0.38);
}

.device-card.is-drop-hover {
  transform: translateY(-3px) scale(1.03);
  border-color: var(--accent);
  background: rgba(85, 230, 193, 0.11);
  box-shadow: 0 14px 34px rgba(85, 230, 193, 0.2), 0 0 0 1px rgba(85, 230, 193, 0.25) inset;
}

.device-card.is-drop-hover::after {
  opacity: 1;
}

.device-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 23px;
  line-height: 1;
}

.device-card.is-self .device-icon {
  background: rgba(75, 163, 255, 0.12);
}

.device-info {
  min-width: 0;
  flex: 1;
}

.device-name {
  overflow: hidden;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 620;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.device-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11.5px;
  white-space: nowrap;
}

.device-connection {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warning);
  flex: none;
}

.device-card.is-connected .device-connection {
  background: var(--accent);
  box-shadow: 0 0 9px rgba(85, 230, 193, 0.7);
}

.device-card.is-self .device-connection {
  background: var(--accent-2);
  box-shadow: 0 0 9px rgba(75, 163, 255, 0.6);
}

.device-empty {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 72px;
  color: var(--muted);
  font-size: 13px;
}

.device-empty .spinner {
  width: 17px;
  height: 17px;
  border: 2px solid rgba(148, 168, 200, 0.24);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Files */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 158px;
  padding: 24px;
  border: 1.5px dashed rgba(148, 168, 200, 0.26);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.018);
  color: var(--muted);
  text-align: center;
  transition:
    border-color 0.2s ease,
    background 0.2s ease;
}

.drop-zone.is-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-zone.is-compact {
  display: none;
}

.drop-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 2px;
  border-radius: 15px;
  background: rgba(85, 230, 193, 0.1);
  color: var(--accent);
}

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

.drop-zone p {
  margin: 0;
  color: #c4d0e2;
  font-size: 13.5px;
}

.drop-zone small {
  color: var(--muted);
  font-size: 11.5px;
}

.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(188px, 1fr));
  gap: 12px;
  margin-top: 13px;
}

.file-grid:empty {
  margin-top: 0;
}

.file-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 142px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012)),
    rgba(9, 14, 22, 0.55);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: pan-y;
  transition:
    border-color 0.18s ease,
    background 0.18s ease,
    transform 0.18s ease,
    box-shadow 0.18s ease;
}

.file-card.is-draggable {
  cursor: grab;
}

.file-card.is-draggable:hover {
  border-color: rgba(85, 230, 193, 0.28);
  background:
    linear-gradient(160deg, rgba(85, 230, 193, 0.055), rgba(255, 255, 255, 0.012)),
    rgba(9, 14, 22, 0.6);
}

.file-card.is-arming {
  border-color: rgba(85, 230, 193, 0.55);
  box-shadow: 0 0 0 1px rgba(85, 230, 193, 0.18) inset;
}

.file-card.is-arming::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 100%;
  background: var(--accent);
  transform-origin: left;
  animation: arm 320ms linear forwards;
}

@keyframes arm {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

.file-card.is-dragging {
  opacity: 0.35;
  border-color: var(--accent);
}

.file-card.is-sent {
  border-color: rgba(85, 230, 193, 0.22);
}

.file-card.is-error {
  border-color: rgba(255, 107, 125, 0.36);
}

.file-top {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}

.file-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 12px;
  background: rgba(75, 163, 255, 0.1);
  font-size: 19px;
  line-height: 1;
}

.file-info {
  min-width: 0;
  flex: 1;
}

.file-name {
  display: -webkit-box;
  overflow: hidden;
  color: #e8eef8;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.35;
  overflow-wrap: anywhere;
  word-break: normal;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.file-size {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11.5px;
}

.file-footer {
  margin-top: auto;
  padding-top: 4px;
}

.file-state {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.35;
}

.file-state.is-live {
  color: var(--accent);
}

.file-state.is-error {
  color: var(--danger);
}

.file-state .mini-dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: currentColor;
}

.file-state .mini-dot.is-pulsing {
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.72);
  }
}

.mini-progress {
  position: relative;
  width: 100%;
  height: 5px;
  margin-top: 8px;
  border-radius: 999px;
  background: rgba(148, 168, 200, 0.16);
  overflow: hidden;
}

.mini-progress > span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transition: width 0.15s linear;
}

.file-actions {
  display: flex;
  gap: 7px;
  margin-top: 8px;
}

.tiny-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  height: 30px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.045);
  color: #d4deed;
  cursor: pointer;
  font-size: 11.5px;
  font-weight: 550;
}

.tiny-btn:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.07);
}

.tiny-btn.is-accent {
  border-color: rgba(85, 230, 193, 0.32);
  background: rgba(85, 230, 193, 0.12);
  color: #b8ffed;
}

.file-card.has-remove .file-info {
  padding-right: 20px;
}

.file-card .remove-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  border-radius: 7px;
  background: rgba(8, 12, 18, 0.7);
  color: var(--muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, background 0.15s ease;
}

.file-card:hover .remove-btn,
.file-card:focus-within .remove-btn {
  opacity: 1;
}

.remove-btn:hover {
  background: rgba(255, 107, 125, 0.18);
  color: var(--danger);
}

.received-panel .file-card {
  border-color: rgba(75, 163, 255, 0.16);
}

.received-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: none;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(75, 163, 255, 0.12);
  color: #a9d3ff;
  font-size: 10px;
  font-weight: 650;
}

/* Drag layers */
.drag-ghost {
  position: fixed;
  z-index: 1000;
  width: 196px;
  padding: 12px;
  border: 1px solid rgba(85, 230, 193, 0.55);
  border-radius: 14px;
  background: rgba(12, 20, 29, 0.94);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(85, 230, 193, 0.12) inset;
  pointer-events: none;
  transform: translate(-50%, -60%) rotate(-2deg) scale(1.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.drag-ghost .ghost-row {
  display: flex;
  align-items: center;
  gap: 9px;
}

.drag-ghost .file-icon {
  width: 34px;
  height: 34px;
  font-size: 17px;
}

.drag-ghost .file-name {
  font-size: 12px;
  -webkit-line-clamp: 1;
}

.drag-ghost .file-size {
  font-size: 10.5px;
}

.drop-hint {
  position: fixed;
  z-index: 1001;
  left: 50%;
  bottom: max(26px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  padding: 12px 20px;
  border: 1px solid rgba(85, 230, 193, 0.36);
  border-radius: 999px;
  background: rgba(12, 20, 29, 0.92);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.45);
  color: #d8fff6;
  font-size: 13px;
  white-space: nowrap;
  pointer-events: none;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.drop-hint b {
  color: var(--accent);
}

/* Toasts */
.toast-wrap {
  position: fixed;
  z-index: 1100;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 9px;
  max-width: min(360px, calc(100vw - 40px));
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  max-width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(14, 21, 31, 0.94);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.42);
  color: #dfe8f5;
  font-size: 12.5px;
  line-height: 1.45;
  animation: toast-in 0.24s ease both;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.toast.is-out {
  animation: toast-out 0.22s ease both;
}

.toast .toast-mark {
  flex: none;
  margin-top: 1px;
  color: var(--accent);
}

.toast.is-error {
  border-color: rgba(255, 107, 125, 0.34);
}

.toast.is-error .toast-mark {
  color: var(--danger);
}

.toast.is-warning .toast-mark {
  color: var(--warning);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(6px) scale(0.97);
  }
}

.footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0 0 28px;
  color: #6e7c92;
  font-size: 11.5px;
  text-align: center;
}

.footer-dot {
  opacity: 0.55;
}

[hidden] {
  display: none !important;
}

@media (max-width: 720px) {
  .topbar {
    width: calc(100% - 28px);
    padding: 20px 0 14px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 13px;
  }

  .brand-mark svg {
    width: 26px;
    height: 26px;
  }

  .brand-text strong {
    font-size: 18px;
  }

  .brand-text small {
    max-width: 160px;
    font-size: 10.5px;
  }

  .net-status {
    padding: 8px 11px;
    font-size: 11px;
  }

  .layout {
    width: calc(100% - 20px);
    gap: 12px;
    padding-bottom: 26px;
  }

  .panel {
    padding: 16px;
    border-radius: 17px;
  }

  .section-head {
    gap: 10px;
    margin-bottom: 13px;
  }

  .section-head h2 {
    font-size: 15.5px;
  }

  .section-hint {
    font-size: 11.5px;
  }

  .section-head > .ghost.small {
    height: 30px;
    padding: 0 9px;
    font-size: 11px;
  }

  .device-card {
    width: 186px;
    padding: 12px;
  }

  .device-icon {
    width: 40px;
    height: 40px;
    font-size: 21px;
  }

  .device-name {
    font-size: 12.5px;
  }

  .primary,
  .ghost {
    height: 38px;
    padding: 0 13px;
    font-size: 12.5px;
  }

  .drop-zone {
    min-height: 128px;
    padding: 18px;
  }

  .drop-zone p {
    font-size: 12.5px;
  }

  .file-grid {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .file-card {
    min-height: 132px;
    padding: 11px;
    border-radius: 14px;
  }

  .file-icon {
    width: 33px;
    height: 33px;
    font-size: 17px;
  }

  .file-name {
    font-size: 12px;
  }

  .file-size {
    font-size: 10.5px;
  }

  .file-state {
    font-size: 10.5px;
  }

  .file-card .remove-btn {
    opacity: 0.8;
    width: 22px;
    height: 22px;
  }

  .tiny-btn {
    height: 28px;
    font-size: 10.5px;
  }

  .drag-ghost {
    width: 174px;
  }

  .drop-hint {
    font-size: 12px;
    padding: 11px 16px;
  }

  .toast-wrap {
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 12px;
    max-width: none;
    align-items: stretch;
  }

  .toast {
    font-size: 12px;
  }

  .footer {
    width: calc(100% - 28px);
    font-size: 10.5px;
    flex-wrap: wrap;
    gap: 5px;
  }
}

@media (max-width: 380px) {
  .brand-text small {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}