@font-face {
  font-family: "Astron2";
  src: url("./Astron2.ttf") format("truetype");
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #101010;
  --panel-2: #151515;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.88);
  --text: #f3f4f6;
  --muted: rgba(243, 244, 246, 0.72);
  --accent: #d6f36b;
  --danger: #ff7a7a;
  --screen-glow-color: rgba(118, 255, 144, 1);
  --screen-glow-opacity: 0.55;
  --screen-glow-duration: 4.2s;
  --screen-card-glow-color: #9cffb0;
  --screen-card-glow-opacity: 0.38;
  --screen-card-bg: #17361c;
  --node-idle-bg: rgba(255, 255, 255, 0.02);
  --node-hover-bg: rgba(255, 255, 255, 0.06);
  --node-active-glow: rgba(59, 130, 246, 0.16);
  --signal-flow-color: rgba(59, 130, 246, 1);
  --signal-flow-opacity: 18%;
  --signal-flow-duration-factor: 1;
  --line-loss-highlight-color: rgba(248, 113, 113, 0.96);
  --output-highlight-color: rgba(250, 204, 21, 0.96);
  --control-bg: rgba(0, 0, 0, 0.65);
  --control-border: rgba(255, 255, 255, 0.16);
  --control-text: var(--text);
  --button-bg: rgba(255, 255, 255, 0.05);
  --button-border: rgba(255, 255, 255, 0.18);
  --button-text: var(--text);
  --footer-border: rgba(255, 255, 255, 0.08);
  --modal-backdrop: rgba(0, 0, 0, 0.7);
  --odf-port-border: color-mix(in srgb, var(--line-strong) 38%, transparent);
  --odf-port-bg: color-mix(in srgb, var(--line-strong) 10%, transparent);
}

body.theme-light {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-2: #edf2f7;
  --line: rgba(15, 23, 42, 0.14);
  --line-strong: rgba(15, 23, 42, 0.88);
  --text: #0f172a;
  --muted: rgba(15, 23, 42, 0.68);
  --accent: #2563eb;
  --screen-glow-color: rgba(34, 197, 94, 1);
  --control-bg: rgba(226, 232, 240, 0.96);
  --control-border: rgba(15, 23, 42, 0.4);
  --control-text: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.08), transparent 32%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "SF Pro Display", sans-serif;
  transition: background 180ms ease, color 180ms ease;
}

button,
input {
  font: inherit;
}

.calc-shell {
  min-height: 100vh;
  padding: clamp(12px, 2vw, 24px);
  display: grid;
  grid-template-rows: minmax(150px, auto) 1fr auto;
  gap: clamp(12px, 2vw, 20px);
}

.calc-screen,
.calc-node,
.modal-card {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    var(--panel);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
}

.calc-screen {
  position: relative;
  border-radius: 24px;
  padding: clamp(18px, 3vw, 28px);
  overflow: hidden;
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.22),
    0 0 18px rgba(118, 255, 144, 0.12);
}

.calc-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, color-mix(in srgb, var(--screen-glow-color) 18%, transparent), transparent 42%),
    radial-gradient(circle at 80% 50%, color-mix(in srgb, var(--screen-glow-color) 16%, transparent), transparent 44%),
    linear-gradient(90deg, color-mix(in srgb, var(--screen-glow-color) 6%, transparent), color-mix(in srgb, var(--screen-glow-color) 12%, transparent), color-mix(in srgb, var(--screen-glow-color) 6%, transparent));
  opacity: var(--screen-glow-opacity);
  filter: blur(18px);
  animation: screenGlowFlow var(--screen-glow-duration) ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

body.reduce-screen-glow .calc-screen::before {
  animation: none;
  opacity: 0;
}

@keyframes screenGlowFlow {
  0%, 100% {
    transform: translateX(-4%) scale(1);
    opacity: 0.42;
  }

  50% {
    transform: translateX(4%) scale(1.04);
    opacity: 0.72;
  }
}

.screen-grid {
  height: 100%;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  align-items: stretch;
  position: relative;
  z-index: 1;
  max-width: calc(100% - 72px);
}

.screen-card {
  border-radius: 18px;
  padding: 12px 12px;
  background: var(--panel-2);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
}

.screen-card span {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.screen-card strong {
  font-size: clamp(15px, 1.5vw, 21px);
  line-height: 1;
}

.screen-card-focus {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: color-mix(in srgb, var(--screen-card-bg) 78%, var(--panel-2));
  box-shadow:
    inset 0 0 18px color-mix(in srgb, var(--screen-card-glow-color) calc(var(--screen-card-glow-opacity) * 100%), transparent),
    0 0 18px color-mix(in srgb, var(--screen-card-glow-color) calc(var(--screen-card-glow-opacity) * 100%), transparent);
}

.screen-card-focus span {
  font-size: 24px;
  text-align: left;
  font-family: "Astron2", "Dots", "DotGothic16", "Courier New", monospace;
  text-shadow: 0 0 8px color-mix(in srgb, var(--screen-card-glow-color) 42%, transparent);
}

.screen-card-focus strong {
  font-size: clamp(56px, 6vw, 88px);
  text-align: right;
  font-family: "Astron2", "Dots", "DotGothic16", "Courier New", monospace;
  text-shadow:
    0 0 10px color-mix(in srgb, var(--screen-card-glow-color) 54%, transparent),
    0 0 18px color-mix(in srgb, var(--screen-card-glow-color) 24%, transparent);
}

.metric-nav {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
}

.settings-trigger,
.theme-trigger {
  position: absolute;
  width: 48px;
  height: 48px;
  border: 1px solid var(--control-border);
  border-radius: 50%;
  background: var(--control-bg);
  color: var(--control-text);
  cursor: pointer;
  z-index: 2;
  font-size: 22px;
  box-shadow:
    0 0 0 2px color-mix(in srgb, var(--panel) 88%, transparent),
    0 10px 22px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(10px);
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.settings-trigger:hover,
.theme-trigger:hover {
  transform: translateY(-1px);
  box-shadow:
    0 0 0 2px color-mix(in srgb, var(--panel) 92%, transparent),
    0 14px 26px rgba(0, 0, 0, 0.22);
}

.settings-trigger {
  top: 14px;
  right: 14px;
}

.theme-trigger {
  top: 68px;
  right: 14px;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(4, minmax(120px, 1fr));
  gap: clamp(12px, 2vw, 20px);
}

.calc-footer {
  min-height: 28px;
  border-top: 1px solid var(--footer-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}

.calc-footer span {
  font-size: clamp(15px, 1.5vw, 21px);
  line-height: 1;
}

#oltNode {
  grid-column: 1;
  grid-row: 1;
}

#fixed14Node {
  grid-column: 1;
  grid-row: 2;
}

#fixed12Node {
  grid-column: 1;
  grid-row: 3;
}

#odfNode {
  grid-column: 1;
  grid-row: 4;
}

#stageNode0 {
  grid-column: 2;
  grid-row: 1;
}

#stageNode1 {
  grid-column: 2;
  grid-row: 2;
}

#stageNode2 {
  grid-column: 2;
  grid-row: 3;
}

#ontNode {
  grid-column: 2;
  grid-row: 4;
}

.calc-node {
  position: relative;
  width: 100%;
  min-height: 120px;
  border-radius: 24px;
  border: 2px solid var(--line-strong);
  clip-path: polygon(10% 0, 90% 0, 100% 50%, 90% 100%, 10% 100%, 0 50%);
  padding: 18px 22px;
  cursor: pointer;
  color: var(--text);
  overflow: hidden;
  isolation: isolate;
  background: var(--node-idle-bg);
  transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.calc-node:hover {
  background: var(--node-hover-bg);
}

.calc-node.is-active {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.22), 0 0 28px var(--node-active-glow);
}

.calc-node.signal-flow {
  animation: signalFlowPulse calc(var(--signal-duration, 12s) * var(--signal-flow-duration-factor)) linear infinite;
  animation-delay: var(--signal-delay, 0s);
}

body.reduce-signal-flow .calc-node.signal-flow {
  animation: none;
}

.calc-node::before {
  content: none;
}

.calc-node::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  border-radius: 24px;
  clip-path: polygon(10% 0, 90% 0, 100% 50%, 90% 100%, 10% 100%, 0 50%);
  pointer-events: none;
  z-index: 2;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

@keyframes signalFlowPulse {
  0%, 14% {
    background: var(--node-idle-bg);
    box-shadow: none;
  }

  20%, 42% {
    background: color-mix(in srgb, var(--signal-flow-color) calc(var(--signal-flow-opacity) * 160%), var(--node-idle-bg));
    box-shadow:
      inset 0 0 34px color-mix(in srgb, var(--signal-flow-color) 42%, transparent),
      0 0 22px color-mix(in srgb, var(--signal-flow-color) 34%, transparent);
  }

  55%, 100% {
    background: var(--node-idle-bg);
    box-shadow: none;
  }
}

.calc-node.line-loss-highlight::after {
  border-color: var(--line-loss-highlight-color);
  box-shadow: 0 0 16px color-mix(in srgb, var(--line-loss-highlight-color) 24%, transparent);
}

.calc-node.output-highlight::after {
  border-color: var(--output-highlight-color);
  box-shadow: 0 0 16px color-mix(in srgb, var(--output-highlight-color) 20%, transparent);
}

.panel-node {
  cursor: default;
}

.corner {
  position: absolute;
  max-width: 34%;
  font-size: clamp(16.5px, 1.5vw, 21px);
  line-height: 1.12;
  color: var(--muted);
  z-index: 1;
}

.top-left {
  top: 12px;
  left: 12%;
}

.top-right {
  top: 12px;
  right: 12%;
  text-align: right;
}

.bottom-left {
  bottom: 12px;
  left: 12%;
}

.bottom-right {
  bottom: 12px;
  right: 12%;
  text-align: right;
}

.center-slot {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px 18%;
  z-index: 1;
}

.node-title {
  font-size: clamp(27px, 2.4vw, 36px);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.odf-ports {
  display: grid;
  grid-template-columns: repeat(3, 12px);
  gap: 8px;
}

.odf-port {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1px solid var(--odf-port-border);
  background: var(--odf-port-bg);
}

.adjust-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.adjust-button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--button-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--button-bg);
  color: var(--button-text);
  font-size: 24px;
}

.adjust-value {
  min-width: 81px;
  text-align: center;
  font-size: clamp(21px, 1.95vw, 30px);
  font-weight: 700;
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 20;
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--modal-backdrop);
}

.modal-card {
  position: relative;
  width: min(960px, calc(100vw - 24px));
  max-height: calc(100vh - 24px);
  border-radius: 24px;
  padding: 18px;
  overflow: auto;
}

.modal-card-compact {
  width: min(420px, calc(100vw - 24px));
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.modal-header h2 {
  margin: 0;
  font-size: 20px;
}

.metrics-list {
  display: grid;
  gap: 10px;
  max-height: min(60vh, 520px);
  overflow: auto;
}

.metric-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel-2);
}

.metric-item-label {
  font-size: 13px;
  color: var(--muted);
}

.metric-item-value {
  font-size: 16px;
  color: var(--text);
  text-align: right;
  white-space: nowrap;
}

.icon-button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.settings-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.settings-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.settings-form input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 10px 12px;
}

.value-form {
  display: grid;
  gap: 14px;
}

.value-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.value-form input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 10px 12px;
}

.value-submit {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-2);
  color: var(--text);
  padding: 12px 16px;
  cursor: pointer;
}

.theme-settings-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 14px;
}

.theme-settings-form {
  display: block;
}

.theme-settings-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.theme-field {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.theme-field span {
  font-size: 13px;
}

.theme-field input,
.theme-field select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 10px 12px;
}

.theme-field input[type="color"] {
  padding: 4px;
  height: 48px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
}

.theme-field input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.theme-field input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 8px;
}

.theme-field input[type="color"]::-moz-color-swatch {
  border: none;
  border-radius: 8px;
}

.theme-field-check {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-2);
}

.theme-field-check input {
  width: 18px;
  height: 18px;
}

@media (max-width: 920px) {
  .screen-grid {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 8px;
  }

  .calc-node {
    min-height: 106px;
  }
}

@media (max-width: 680px) {
  .calc-shell {
    grid-template-rows: minmax(94px, auto) 1fr auto;
    gap: 8px;
  }

  .screen-grid {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 5px;
    padding-top: 0;
    max-width: calc(100% - 40px);
  }

  .calc-screen {
    padding: 10px 48px 10px 10px;
    border-radius: 16px;
  }

  .screen-card {
    min-width: 0;
    padding: 6px 6px 5px;
    border-radius: 10px;
    gap: 3px;
  }

  .screen-card span {
    font-size: 8px;
    letter-spacing: 0.02em;
  }

  .screen-card strong {
    font-size: 18px;
  }

  .screen-card-focus {
    padding: 8px 10px;
    gap: 5px;
  }

  .screen-card-focus span {
    font-size: 14px;
  }

  .screen-card-focus strong {
    font-size: 32px;
  }

  .metric-nav {
    border-radius: 10px;
    font-size: 20px;
  }

  .metric-item {
    padding: 10px 12px;
  }

  .metric-item-label {
    font-size: 12px;
  }

  .metric-item-value {
    font-size: 14px;
  }

  .theme-settings-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .settings-trigger {
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .theme-trigger {
    top: 46px;
    right: 8px;
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .calc-footer {
    min-height: 22px;
  }

  .calc-footer span {
    font-size: 9px;
  }

  .calc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(4, minmax(92px, 1fr));
    gap: 10px;
  }

  .calc-node {
    min-height: 92px;
    padding: 12px 14px;
  }

  .corner {
    max-width: 40%;
    font-size: 12px;
    line-height: 1.02;
  }

  .top-left,
  .top-right {
    top: 10px;
  }

  .bottom-left,
  .bottom-right {
    bottom: 10px;
  }

  .center-slot {
    padding: 20px 18%;
  }

  .node-title {
    font-size: 21px;
  }

  .odf-ports {
    grid-template-columns: repeat(3, 9px);
    gap: 6px;
  }

  .odf-port {
    width: 9px;
    height: 9px;
    border-radius: 2px;
  }

  .adjust-button {
    width: 36px;
    height: 36px;
    font-size: 21px;
  }

  .adjust-value {
    min-width: 48px;
    font-size: 15px;
  }

  .adjust-row {
    gap: 6px;
  }

  .settings-form {
    grid-template-columns: 1fr;
  }
}