/* base.css - 公共基础样式 */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #0a0a1a;
  color: #fff;
  overflow: hidden;
}

:root {
  --hud-border: rgba(210, 237, 255, 0.32);
  --hud-border-hover: rgba(232, 246, 255, 0.48);
  --hud-border-active: rgba(245, 251, 255, 0.62);
  --glass-fill-top: rgba(255, 255, 255, 0.18);
  --glass-fill-bottom: rgba(115, 180, 255, 0.08);
  --glass-sheen: rgba(255, 255, 255, 0.34);
  --glass-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
  --glass-glow: 0 0 26px rgba(120, 200, 255, 0.16);
}

@property --float-offset {
  syntax: '<length>';
  inherits: false;
  initial-value: 0px;
}

#container {
  position: relative;
  width: 100vw;
  height: 100vh;
}

#container.dragging {
  cursor: grabbing;
}

/* Bottom Dock */
#right-toolbar-group {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

#right-toolbar-group,
#info-panel,
#coordinates-display,
#legend,
#earth-stats {
  transition:
    top 0.45s ease,
    right 0.45s ease,
    bottom 0.45s ease,
    left 0.45s ease,
    transform 0.45s ease,
    box-shadow 0.45s ease;
}

#info-panel,
#coordinates-display,
#legend,
#earth-stats,
#satellite-info {
  position: absolute;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 24% 12%, rgba(255, 255, 255, 0.12), transparent 28%),
    radial-gradient(circle at 78% 115%, rgba(255, 255, 255, 0.06), transparent 32%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(110, 176, 255, 0.06)),
    rgba(7, 18, 36, 0.28);
  border: 1px solid rgba(225, 242, 255, 0.2);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04),
    0 18px 40px rgba(0, 0, 0, 0.24),
    0 0 32px rgba(120, 200, 255, 0.12);
  backdrop-filter: blur(20px) saturate(145%);
  -webkit-backdrop-filter: blur(20px) saturate(145%);
}

#info-panel::before,
#coordinates-display::before,
#legend::before,
#earth-stats::before,
#satellite-info::before {
  content: '';
  position: absolute;
  inset: 1px 1px 24% 1px;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.05) 26%, transparent 70%);
  opacity: 0.46;
  pointer-events: none;
}

#info-panel::after,
#coordinates-display::after,
#legend::after,
#earth-stats::after,
#satellite-info::after {
  content: '';
  position: absolute;
  inset: -1px;
  padding: 1.4px;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(170, 223, 255, 0.2) 34%, rgba(88, 169, 255, 0.14) 68%, rgba(255, 255, 255, 0.24));
  opacity: 0.78;
  pointer-events: none;
  filter: url(#liquid-glass-distortion) blur(0.35px);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
}

#info-panel > *,
#coordinates-display > *,
#legend > *,
#earth-stats > *,
#satellite-info > * {
  position: relative;
  z-index: 1;
}

#loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.2rem;
  color: #4db8ff;
  z-index: 100;
  text-align: center;
  background-color: rgba(10, 10, 30, 0.95);
  padding: 30px;
  border-radius: 10px;
  border: 1px solid #4db8ff;
  box-shadow: 0 0 30px rgba(77,184,255,0.3);
}

#loading-spinner {
  border: 4px solid rgba(77, 184, 255, 0.3);
  border-top: 4px solid #4db8ff;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 15px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-message {
  color: #ff4444;
  margin-top: 10px;
  font-size: 0.9rem;
  display: none;
  padding: 10px;
  background-color: rgba(255, 68, 68, 0.1);
  border-radius: 5px;
  border-left: 3px solid #ff4444;
}

.terrain-controls {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.slider-container {
  margin-bottom: 10px;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  font-size: 0.9rem;
}

input[type="range"] {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  background: rgba(0, 102, 204, 0.3);
  border-radius: 4px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #4db8ff;
  cursor: pointer;
  box-shadow: 0 0 10px #4db8ff;
}

.status-message {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translate(-50%, -18px);
  background-color: rgba(10, 10, 30, 0.85);
  border-radius: 10px;
  padding: 10px 15px;
  z-index: 210;
  box-shadow: 0 0 20px rgba(0, 150, 255, 0.3);
  border: 1px solid rgba(0, 150, 255, 0.2);
  font-size: 0.9rem;
  display: none;
  backdrop-filter: blur(5px);
  text-align: center;
  min-width: 180px;
  opacity: 0;
  transition:
    transform 0.28s ease,
    opacity 0.28s ease;
}

.status-message.visible {
  transform: translate(-50%, 0);
  opacity: 1;
}

.status-message.success {
  color: #44ff44;
  border-left: 3px solid #44ff44;
}

.status-message.warning {
  color: #ffff44;
  border-left: 3px solid #ffff44;
}

.status-message.error {
  color: #ff4444;
  border-left: 3px solid #ff4444;
}

.tooltip {
  position: absolute;
  background-color: rgba(10, 10, 30, 0.95);
  border: 1px solid #4db8ff;
  border-radius: 5px;
  padding: 5px 10px;
  font-size: 0.8rem;
  color: #fff;
  pointer-events: none;
  z-index: 100;
  box-shadow: 0 0 10px rgba(77, 184, 255, 0.3);
  display: none;
  user-select: none;
}

/* Floating toolbar dock */
#control-toolbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

.toolbar-items {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: nowrap;
}

.floating-popover-group {
  position: relative;
}

.floating-popover-group::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 100%;
  transform: translateX(-50%);
  width: 56px;
  height: 16px;
  background: transparent;
}

.floating-popover-group > .stack-toolbar {
  position: absolute;
  left: 50%;
  top: auto;
  right: auto;
  bottom: calc(100% + 12px);
  transform: translate(-50%, 10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    visibility 0.22s ease;
  z-index: 220;
}

.toolbar-btn.floating-btn {
  width: 42px;
  height: 42px;
  min-width: 42px;
  min-height: 42px;
  border-radius: 50%;
  overflow: hidden;
}

.liquid-glass-surface {
  --elastic-x: 0px;
  --elastic-y: 0px;
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  --btn-scale: 1;
  --press-offset: 0px;
  --float-offset: 0px;
  --glow-opacity: 0.24;
  --glow-x: 50%;
  --glow-y: 22%;
  position: relative;
  isolation: isolate;
  transform-style: preserve-3d;
  overflow: hidden;
  background:
    radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(255, 255, 255, 0.16), transparent 34%),
    radial-gradient(circle at 50% 118%, rgba(255, 255, 255, 0.08), transparent 30%),
    linear-gradient(180deg, var(--glass-fill-top), var(--glass-fill-bottom)),
    rgba(8, 20, 38, 0.22);
  border: 1px solid var(--hud-border);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    inset 0 -1px 0 rgba(255, 255, 255, 0.05),
    var(--glass-shadow),
    var(--glass-glow);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
  transform:
    translate3d(var(--elastic-x), calc(var(--float-offset) + var(--press-offset) + var(--elastic-y)), 0)
    scale(var(--btn-scale));
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease,
    background 0.22s ease,
    opacity 0.18s ease,
    border-color 0.22s ease;
  animation: floatDock 3.8s ease-in-out infinite;
}

.liquid-glass-surface::before {
  content: '';
  position: absolute;
  inset: 1px 1px 18px 1px;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.05) 28%, transparent 68%);
  opacity: 0.5;
  pointer-events: none;
  transform:
    perspective(120px)
    rotateX(calc(var(--tilt-x) * 0.7))
    rotateY(calc(var(--tilt-y) * 0.7))
    translate3d(calc(var(--elastic-x) * 0.22), calc(var(--elastic-y) * 0.22), 0);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.liquid-glass-surface::after {
  content: '';
  position: absolute;
  inset: -1px;
  padding: 1.35px;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.36), rgba(168, 222, 255, 0.22) 34%, rgba(96, 175, 255, 0.16) 66%, rgba(255, 255, 255, 0.28));
  opacity: 0.82;
  pointer-events: none;
  filter: url(#liquid-glass-distortion) blur(0.35px);
  transform:
    perspective(120px)
    rotateX(calc(var(--tilt-x) * 0.5))
    rotateY(calc(var(--tilt-y) * 0.5))
    translate3d(calc(var(--elastic-x) * 0.16), calc(var(--elastic-y) * 0.16), 0);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.toolbar-items > :nth-child(2n).floating-btn,
.toolbar-items > :nth-child(2n) .floating-btn {
  animation-delay: 0.18s;
}

.toolbar-items > :nth-child(3n).floating-btn,
.toolbar-items > :nth-child(3n) .floating-btn {
  animation-delay: 0.34s;
}

@keyframes floatDock {
  0%, 100% {
    --float-offset: 0px;
  }
  50% {
    --float-offset: -4px;
  }
}

.toolbar-btn {
  position: relative;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: #4db8ff;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  overflow: visible;
  appearance: none;
  -webkit-appearance: none;
}

.toolbar-btn:not(.liquid-glass-surface)::after {
  content: none;
}

.toolbar-btn .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  transform: translateZ(0);
  transition: transform 0.16s ease, opacity 0.16s ease;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  line-height: 1;
}

.liquid-glass-surface:hover {
  --btn-scale: 1.035;
  --press-offset: -1px;
  --glow-opacity: 0.32;
  background:
    radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(255, 255, 255, 0.18), transparent 34%),
    radial-gradient(circle at 50% 118%, rgba(255, 255, 255, 0.1), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(128, 198, 255, 0.1)),
    rgba(8, 20, 38, 0.2);
  border-color: var(--hud-border-hover);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -1px 0 rgba(255, 255, 255, 0.08),
    0 18px 36px rgba(0, 0, 0, 0.24),
    0 0 28px rgba(145, 214, 255, 0.22);
}

.liquid-glass-surface:hover::before {
  opacity: 0.62;
  transform: scale(1.01);
}

.liquid-glass-surface:hover::after {
  opacity: 0.96;
  transform: scale(1.01);
}

.liquid-glass-surface:active,
.liquid-glass-surface.is-pressed {
  --btn-scale: 0.942;
  --press-offset: 2px;
  --glow-opacity: 0.2;
  background:
    radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(255, 255, 255, 0.24), transparent 34%),
    radial-gradient(circle at 50% 118%, rgba(255, 255, 255, 0.14), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.24), rgba(146, 210, 255, 0.16)),
    rgba(10, 24, 44, 0.24);
  border-color: rgba(240, 249, 255, 0.58);
  box-shadow:
    inset 0 2px 10px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 4px 10px rgba(0, 0, 0, 0.18),
    0 0 14px rgba(176, 226, 255, 0.18);
}

.liquid-glass-surface:active::before,
.liquid-glass-surface.is-pressed::before {
  opacity: 0.46;
  transform: translateY(2px) scale(0.985);
}

.liquid-glass-surface:active::after,
.liquid-glass-surface.is-pressed::after {
  opacity: 0.78;
  transform: scale(0.985);
}

.liquid-glass-surface:active .icon,
.liquid-glass-surface.is-pressed .icon {
  transform: translateY(1.5px);
}

.liquid-glass-surface:active img,
.liquid-glass-surface.is-pressed img,
.liquid-glass-surface:active .material-symbols-rounded,
.liquid-glass-surface.is-pressed .material-symbols-rounded {
  transform: translateY(1.5px);
  transition: transform 0.16s ease, opacity 0.16s ease;
}

#zoom-control-group #zoom-toolbar .zoom-btn:active,
#zoom-control-group #zoom-toolbar .zoom-btn.is-pressed,
#zoom-control-group #zoom-toolbar .zoom-percent:active,
#zoom-control-group #zoom-toolbar .zoom-percent.is-pressed {
  letter-spacing: -0.01em;
}

.liquid-glass-surface.active {
  background:
    radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(255, 255, 255, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(118, 200, 255, 0.14)),
    rgba(11, 34, 58, 0.26);
  border-color: var(--hud-border-active);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 0 18px rgba(160, 220, 255, 0.14),
    0 18px 34px rgba(0, 0, 0, 0.24),
    0 0 30px rgba(145, 214, 255, 0.24);
}

.toolbar-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2.1;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.toolbar-btn .material-symbols-rounded {
  font-size: 21px;
  line-height: 1;
  font-variation-settings:
    'FILL' 0,
    'wght' 500,
    'GRAD' 0,
    'opsz' 24;
  color: currentColor;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  pointer-events: none;
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.toolbar-btn img {
  width: 20px;
  height: 20px;
  display: block;
  user-select: none;
  pointer-events: none;
  shape-rendering: geometricPrecision;
  image-rendering: -webkit-optimize-contrast;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

#rotate-toggle .icon-play,
#rotate-toggle.is-stopped .icon-pause,
#layout-toggle .layout-collapse,
#layout-toggle.active .layout-expand {
  display: none;
}

#rotate-toggle.is-stopped .icon-play,
#layout-toggle.active .layout-collapse {
  display: inline-flex;
}

#zoom-control-group:hover #zoom-toolbar,
#zoom-control-group:focus-within #zoom-toolbar,
#zoom-control-group.open #zoom-toolbar,
#info-control-group:hover #info-toolbar,
#info-control-group:focus-within #info-toolbar,
#info-control-group.open #info-toolbar {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

#zoom-control-group #zoom-toolbar .zoom-percent {
  min-width: 0;
  width: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0;
  font-size: 0.68rem;
  border-radius: 50%;
  color: #4db8ff;
  animation: floatDock 3.8s ease-in-out infinite;
  animation-delay: 0.18s;
}

#zoom-control-group #zoom-toolbar .zoom-percent:hover {
}

#zoom-control-group #zoom-toolbar,
#info-control-group #info-toolbar {
  top: auto;
  right: auto;
  left: 50%;
  bottom: calc(100% + 12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
}

#info-toolbar .toolbar-btn:nth-child(1) {
  animation-delay: 0.34s;
}

#info-toolbar .toolbar-btn:nth-child(2) {
  animation-delay: 0.18s;
}

#info-toolbar .toolbar-btn:nth-child(3) {
  animation-delay: 0.1s;
}

#info-toolbar .toolbar-btn:nth-child(4) {
  animation-delay: 0s;
}

#zoom-control-group #zoom-toolbar .zoom-btn {
  width: 42px;
  height: 42px;
  min-width: 42px;
  border-radius: 50%;
  color: #4db8ff;
  animation: floatDock 3.8s ease-in-out infinite;
}

#zoom-toolbar .zoom-btn:nth-child(1) {
  animation-delay: 0s;
}

#zoom-toolbar .zoom-btn:nth-child(3) {
  animation-delay: 0.34s;
}

#zoom-control-group #zoom-toolbar .zoom-btn:hover {
}

#zoom-control-group #zoom-toolbar .zoom-btn:active,
#zoom-control-group #zoom-toolbar .zoom-percent:active {
}

#zoom-control-group #zoom-toolbar .tooltip {
  bottom: calc(100% + 10px);
}

#zoom-control-group #zoom-toolbar .tooltip::after {
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: rgba(77, 184, 255, 0.4);
}

#container.layout-expanded #info-panel {
  top: 20px;
  left: 20px;
  transform: translate(calc(-100% + 20px), calc(-100% + 20px));
}

#container.layout-expanded #coordinates-display {
  top: 20px;
  right: 20px;
  transform: translate(calc(100% - 20px), calc(-100% + 20px));
}

#container.layout-expanded #legend {
  left: 20px;
  bottom: 20px;
  transform: translate(calc(-100% + 20px), calc(100% - 20px));
}

#container.layout-expanded #earth-stats {
  right: 20px;
  bottom: 20px;
  transform: translate(calc(100% - 20px), calc(100% - 20px));
}

#container.layout-expanded #right-toolbar-group {
  bottom: 18px;
  transform: translateX(-50%);
}

.toolbar-btn .tooltip {
  position: absolute;
  bottom: 56px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 10, 30, 0.95);
  color: #fff;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  border: 1px solid rgba(77, 184, 255, 0.4);
  pointer-events: none;
  z-index: 100;
}

.toolbar-btn:hover .tooltip,
.floating-popover-group:hover > .toolbar-btn .tooltip,
.floating-popover-group:focus-within > .toolbar-btn .tooltip {
  opacity: 1;
  visibility: visible;
  bottom: 58px;
}

.toolbar-btn .tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: rgba(77, 184, 255, 0.4);
}