:root {
  --bg: #f3ede2;
  --bg-accent: #dfe9ea;
  --surface: rgba(255, 252, 247, 0.76);
  --surface-strong: rgba(255, 252, 248, 0.96);
  --ink: #15202b;
  --muted: #5f6d76;
  --line: rgba(21, 32, 43, 0.08);
  --line-strong: rgba(21, 32, 43, 0.12);
  --shadow: 0 28px 60px rgba(42, 35, 23, 0.1);
  --solar: #ef7a24;
  --home: #2f6df6;
  --battery: #17956f;
  --grid: #8d55dd;
  --flow-solar: #17956f;
  --flow-grid: #cf4b3f;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(239, 122, 36, 0.18), transparent 24%),
    radial-gradient(circle at top right, rgba(47, 109, 246, 0.14), transparent 22%),
    linear-gradient(180deg, #fcfaf5 0%, var(--bg) 52%, var(--bg-accent) 100%);
  font-family: "Sora", "Avenir Next", "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(21, 32, 43, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 32, 43, 0.024) 1px, transparent 1px);
  background-size: 2.25rem 2.25rem;
  mask-image: linear-gradient(180deg, black 0%, rgba(0, 0, 0, 0.15) 100%);
  pointer-events: none;
}

body.auth-page {
  display: grid;
  place-items: center;
  padding: 1rem;
}

.auth-shell {
  width: min(100%, 26rem);
  position: relative;
  z-index: 1;
}

.auth-card {
  padding: 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: 1.6rem;
  background:
    linear-gradient(180deg, rgba(255, 253, 249, 0.9), rgba(255, 249, 242, 0.82)),
    var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.auth-card__title {
  margin: 0.25rem 0 0;
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.auth-card__note {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.auth-form {
  margin-top: 1.25rem;
  display: grid;
  gap: 0.8rem;
}

.auth-form__label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.auth-form__input {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.auth-form__input:focus {
  outline: none;
  border-color: rgba(47, 109, 246, 0.4);
  box-shadow:
    0 0 0 4px rgba(47, 109, 246, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.auth-form__submit {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1rem;
  background: linear-gradient(135deg, #223149, #15202b);
  color: white;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 18px 32px rgba(21, 32, 43, 0.18);
}

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

.auth-form__error {
  margin: -0.2rem 0 0;
  color: #a13721;
  font-size: 0.85rem;
  font-weight: 600;
}

.auth-form__error--hidden {
  display: none;
}

.shell {
  width: min(1220px, calc(100vw - 2rem));
  margin: 0 auto;
  min-height: 100dvh;
  padding: 0.8rem 0 0.6rem;
  display: grid;
  grid-template-rows: auto auto auto auto;
  align-content: start;
  gap: 0.7rem;
}

.banner {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(186, 77, 39, 0.18);
  border-radius: 1rem;
  background: rgba(255, 239, 231, 0.92);
  color: #8f3416;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: 0 10px 24px rgba(186, 77, 39, 0.08);
}

.banner--hidden {
  display: none;
}

.status-bar,
.panel {
  position: relative;
  z-index: 1;
  border: 1px solid var(--line-strong);
  border-radius: 1.6rem;
  box-shadow: var(--shadow);
}

.status-bar {
  padding: 0.9rem 1.1rem;
  background:
    linear-gradient(135deg, rgba(255, 252, 248, 0.94), rgba(255, 250, 243, 0.84)),
    rgba(255, 255, 255, 0.65);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  backdrop-filter: blur(18px);
}

.panel__eyebrow {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

h2,
.metric-card__value {
  margin: 0;
  line-height: 1;
  letter-spacing: -0.04em;
}

h2 {
  margin-top: 0.2rem;
  font-size: clamp(1.1rem, 1.9vw, 1.55rem);
}

.status-bar__site,
.status-bar__stamp,
.panel__note,
.metric-card__note,
.footnote {
  margin: 0;
  color: var(--muted);
}

.status-bar__site {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.status-bar__stamp {
  font-size: 0.82rem;
}

.panel__header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.9rem;
}

.panes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.7rem;
  min-height: 0;
  align-content: start;
  align-items: start;
}

.panel {
  padding: 1.05rem;
  background:
    linear-gradient(180deg, rgba(255, 253, 249, 0.86), rgba(255, 249, 242, 0.72)),
    var(--surface);
  backdrop-filter: blur(16px);
}

.panel__note {
  max-width: 14rem;
  text-align: right;
  font-size: 0.8rem;
  line-height: 1.3;
}

.flow-board {
  margin-top: 0.9rem;
}

.flow-stage {
  position: relative;
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(251, 246, 239, 0.72)),
    rgba(255, 252, 248, 0.8);
  overflow: hidden;
}

.flow-stage::before {
  content: "";
  position: absolute;
  inset: 1rem;
  border-radius: 1rem;
  background:
    radial-gradient(circle at 18% 22%, rgba(23, 149, 111, 0.08), transparent 22%),
    radial-gradient(circle at 18% 78%, rgba(207, 75, 63, 0.08), transparent 22%),
    radial-gradient(circle at 82% 22%, rgba(47, 109, 246, 0.08), transparent 20%),
    radial-gradient(circle at 82% 78%, rgba(23, 149, 111, 0.08), transparent 20%);
  pointer-events: none;
}

.flow-stage__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.flow-line {
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.flow-line--rail {
  stroke-width: 0.75;
  opacity: 0.28;
}

.flow-line--pulse {
  stroke-width: 1.2;
  stroke-dasharray: 8 28;
  animation: flow-pulse 2600ms linear infinite;
  filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.45));
}

.flow-line.is-solar {
  stroke: var(--flow-solar);
}

.flow-line.is-battery {
  stroke: var(--battery);
}

.flow-line.is-grid {
  stroke: var(--flow-grid);
}

@keyframes flow-pulse {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -36;
  }
}

.flow-node,
.flow-edge {
  position: absolute;
  z-index: 1;
}

.is-hidden {
  display: none;
}

.flow-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.flow-node {
  width: clamp(8.25rem, 12vw, 10.25rem);
  min-height: 0;
  padding: 0;
  text-align: center;
  transform: translate(-50%, -50%);
}

.flow-node--panels {
  left: 18%;
  top: 22%;
  --accent: var(--solar);
}

.flow-node--home {
  left: 82%;
  top: 22%;
  --accent: var(--home);
}

.flow-node--grid {
  left: 18%;
  top: 78%;
  --accent: var(--grid);
}

.flow-node--battery {
  left: 82%;
  top: 78%;
  --accent: var(--battery);
}

.flow-node__top {
  display: grid;
  justify-items: center;
  gap: 0.45rem;
}

.flow-node__icon {
  display: grid;
  place-items: center;
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 999px;
  color: var(--accent);
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.95), transparent 40%),
    color-mix(in srgb, var(--accent) 12%, white);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, white);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    0 12px 22px color-mix(in srgb, var(--accent) 16%, transparent);
}

.flow-node__icon svg {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
}

.flow-node__title {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--ink) 88%, var(--accent));
}

.flow-node__value {
  margin: 0.6rem 0 0;
  font-size: clamp(1.85rem, 2.3vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.flow-node__note {
  margin: 0.38rem 0 0;
  font-size: 0.76rem;
  line-height: 1.25;
  color: var(--muted);
}

.flow-edge {
  padding: 0.38rem 0.62rem;
  border: 1px solid rgba(21, 32, 43, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  backdrop-filter: blur(12px);
  transform: translate(-50%, -50%);
}

.flow-edge.is-active {
  color: var(--ink);
  box-shadow: 0 10px 24px rgba(21, 32, 43, 0.08);
}

.flow-edge--solar {
  border-color: rgba(23, 149, 111, 0.18);
  color: var(--flow-solar);
}

.flow-edge--battery {
  border-color: rgba(23, 149, 111, 0.18);
  color: var(--battery);
}

.flow-edge--grid {
  border-color: rgba(207, 75, 63, 0.18);
  color: var(--flow-grid);
}

.flow-edge--solar-home {
  left: 44%;
  top: 15%;
}

.flow-edge--solar-battery {
  left: 53%;
  top: 54%;
}

.flow-edge--solar-grid {
  left: 11%;
  top: 50%;
}

.flow-edge--grid-home {
  left: 38%;
  top: 42%;
}

.flow-edge--grid-battery {
  left: 44%;
  top: 84%;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 0.9rem;
}

.metric-card {
  position: relative;
  overflow: hidden;
  min-height: 156px;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(252, 248, 242, 0.94)),
    var(--surface-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.metric-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 42%, white));
}

.metric-card::after {
  content: "";
  position: absolute;
  right: -1rem;
  bottom: -1rem;
  width: 7.5rem;
  height: 7.5rem;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 18%, transparent), transparent 68%);
  pointer-events: none;
}

.metric-card > * {
  position: relative;
  z-index: 1;
}

.metric-card__top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 0.75rem;
}

.metric-card__label {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  color: color-mix(in srgb, var(--ink) 86%, var(--accent));
}

.metric-card__icon {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, white);
  border-radius: 999px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, white);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.metric-card__icon svg {
  width: 1.15rem;
  height: 1.15rem;
  display: block;
}

.metric-card__value {
  margin-top: 0.8rem;
  font-size: clamp(2rem, 2.4vw, 2.75rem);
}

.metric-card__note {
  margin-top: 0.8rem;
  max-width: 18ch;
  font-size: 0.76rem;
  line-height: 1.28;
}

.metric-card--solar {
  --accent: var(--solar);
}

.metric-card--home {
  --accent: var(--home);
}

.metric-card--battery {
  --accent: var(--battery);
}

.metric-card--grid {
  --accent: var(--grid);
}

.footnote {
  padding: 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.01em;
}

@media (max-width: 1024px) {
  .shell {
    width: min(100vw - 1.1rem, 1220px);
  }

  .flow-stage {
    min-height: 330px;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(100vw - 1rem, 960px);
    padding: 0.45rem 0;
    gap: 0.45rem;
  }

  .status-bar,
  .panel {
    border-radius: 1.15rem;
  }

  .status-bar,
  .panel__header {
    flex-direction: column;
    align-items: start;
  }

  .panel__note {
    text-align: left;
    max-width: none;
  }

  .panes {
    gap: 0.45rem;
  }

  .flow-stage {
    min-height: 440px;
  }

  .flow-node {
    width: 7rem;
  }

  .flow-edge {
    font-size: 0.7rem;
    padding: 0.32rem 0.5rem;
  }

  .flow-edge--solar-home {
    left: 46%;
    top: 17%;
  }

  .flow-edge--solar-battery {
    left: 54%;
    top: 54%;
  }

  .flow-edge--solar-grid {
    left: 10%;
    top: 50%;
  }

  .flow-edge--grid-home {
    left: 39%;
    top: 43%;
  }

  .flow-edge--grid-battery {
    left: 45%;
    top: 82%;
  }

  .metric-card {
    min-height: 132px;
    padding: 0.82rem;
  }

  .metric-card__value {
    margin-top: 0.55rem;
    font-size: clamp(1.6rem, 6vw, 2.05rem);
  }

  .metric-card__note {
    margin-top: 0.55rem;
  }

  .metric-card__icon {
    width: 2rem;
    height: 2rem;
  }
}

@media (max-width: 430px) {
  .status-bar {
    padding: 0.75rem 0.85rem;
  }

  .status-bar__site,
  .status-bar__stamp {
    font-size: 0.78rem;
  }

  .panel {
    padding: 0.85rem;
  }

  .flow-stage {
    min-height: 420px;
  }

  .flow-node {
    width: 5.85rem;
  }

  .flow-node--panels,
  .flow-node--grid {
    left: 20%;
  }

  .flow-node--home,
  .flow-node--battery {
    left: 80%;
  }

  .flow-node__icon {
    width: 2.55rem;
    height: 2.55rem;
  }

  .flow-node__value {
    margin-top: 0.45rem;
    font-size: 1.3rem;
  }

  .flow-node__note {
    font-size: 0.72rem;
  }

  .flow-edge--solar-home,
  .flow-edge--solar-battery,
  .flow-edge--grid-battery {
    left: 50%;
  }

  .flow-edge--grid-home {
    left: 35%;
  }

  .flow-edge--solar-grid {
    left: 11%;
  }

  .metric-grid {
    gap: 0.45rem;
  }

  .metric-card {
    min-height: 118px;
    border-radius: 1rem;
  }

  .metric-card__label,
  .metric-card__note,
  .panel__note,
  .footnote {
    font-size: 0.72rem;
  }
}