:root {
  --bg: #05070a;
  --panel: rgba(12, 16, 22, 0.96);
  --panel-strong: rgba(17, 22, 29, 0.98);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f5f7fb;
  --muted: #96a0b1;
  --buy: #2ee37a;
  --buy-soft: rgba(46, 227, 122, 0.16);
  --sell: #ff5e6c;
  --sell-soft: rgba(255, 94, 108, 0.16);
  --pending: #d8a957;
  --pending-soft: rgba(216, 169, 87, 0.16);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --radius-xl: 28px;
  --radius-lg: 18px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(216, 169, 87, 0.06), transparent 22%),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.03), transparent 24%),
    linear-gradient(180deg, #090c10 0%, #05070a 100%);
  font-family: "Avenir Next", "Helvetica Neue", "Segoe UI", sans-serif;
  transition: background 220ms ease;
}

body.tone-buy {
  background:
    radial-gradient(circle at top left, rgba(46, 227, 122, 0.08), transparent 22%),
    radial-gradient(circle at top right, rgba(46, 227, 122, 0.04), transparent 26%),
    linear-gradient(180deg, #090d0f 0%, #05070a 100%);
}

body.tone-sell {
  background:
    radial-gradient(circle at top left, rgba(255, 94, 108, 0.08), transparent 22%),
    radial-gradient(circle at top right, rgba(255, 94, 108, 0.04), transparent 26%),
    linear-gradient(180deg, #0d090b 0%, #05070a 100%);
}

body.tone-pending {
  background:
    radial-gradient(circle at top left, rgba(216, 169, 87, 0.07), transparent 22%),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.03), transparent 24%),
    linear-gradient(180deg, #090c10 0%, #05070a 100%);
}

.page-shell {
  min-height: 100vh;
  display: grid;
  justify-items: center;
  align-content: start;
  padding: clamp(52px, 9vh, 104px) 24px 24px;
}

#signal-root {
  width: min(980px, 100%);
}

.signal-card,
.empty-state {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--panel-strong) 0%, var(--panel) 100%);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.signal-card::before {
  content: "";
  position: absolute;
  inset: -18% auto auto 50%;
  width: 360px;
  height: 180px;
  transform: translateX(-50%);
  border-radius: 50%;
  filter: blur(34px);
  opacity: 0.2;
  pointer-events: none;
}

.signal-card.buy::before {
  background: rgba(46, 227, 122, 0.22);
}

.signal-card.sell::before {
  background: rgba(255, 94, 108, 0.22);
}

.signal-card.pending::before {
  background: rgba(216, 169, 87, 0.2);
}

.signal-card-summary {
  position: relative;
  z-index: 1;
  list-style: none;
  cursor: pointer;
  padding: 34px 34px 26px;
  text-align: center;
}

.signal-card-summary::-webkit-details-marker {
  display: none;
}

.signal-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-status.buy {
  color: var(--buy);
  background: var(--buy-soft);
  border-color: rgba(46, 227, 122, 0.24);
}

.signal-status.sell {
  color: var(--sell);
  background: var(--sell-soft);
  border-color: rgba(255, 94, 108, 0.24);
}

.signal-status.pending {
  color: var(--pending);
  background: var(--pending-soft);
  border-color: rgba(216, 169, 87, 0.24);
}

.signal-headline {
  margin-top: 22px;
  font-size: clamp(6.2rem, 19vw, 10rem);
  line-height: 0.84;
  letter-spacing: -0.045em;
  font-weight: 800;
}

.signal-headline.buy {
  color: var(--buy);
}

.signal-headline.sell {
  color: var(--sell);
}

.signal-headline.pending {
  color: var(--pending);
}

.signal-levels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.signal-level {
  display: grid;
  align-content: center;
  min-height: 138px;
  padding: 18px 16px 20px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.025) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  text-align: center;
}

.signal-level.stop {
  background:
    linear-gradient(180deg, rgba(255, 94, 108, 0.08) 0%, rgba(255, 94, 108, 0.03) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 0 0 1px rgba(255, 94, 108, 0.12);
}

.signal-level span,
.signal-hint,
.analysis-table th {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.signal-level strong {
  display: block;
  margin-top: 10px;
  font-size: clamp(1.4rem, 3.6vw, 2.2rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.signal-note {
  max-width: 760px;
  margin: 20px auto 0;
  color: #d3dbe7;
  font-size: 1rem;
  line-height: 1.7;
}

.signal-hint {
  margin-top: 18px;
}

.analysis-reveal {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 320ms ease, opacity 220ms ease;
  opacity: 0;
}

.signal-card[open] .analysis-reveal {
  grid-template-rows: 1fr;
  opacity: 1;
}

.analysis-panel {
  position: relative;
  z-index: 1;
  overflow: hidden;
  padding: 0 34px 34px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 28px;
}

.analysis-copy p,
.detail-empty {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.analysis-groups {
  margin-top: 22px;
  display: grid;
  gap: 16px;
}

.analysis-group {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.025);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.analysis-group h2 {
  margin: 0;
  color: var(--text);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.analysis-items {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.analysis-item {
  padding: 14px 15px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.analysis-item-label {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.analysis-item-value {
  display: block;
  margin-top: 8px;
  color: #dbe4f0;
  font-size: 1.08rem;
  line-height: 1.4;
}

.analysis-item-detail {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.empty-state {
  padding: 26px;
  color: var(--muted);
}

@media (max-width: 860px) {
  #signal-root {
    width: min(100%, 880px);
  }

  .signal-levels {
    grid-template-columns: 1fr;
  }

  .analysis-items {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: clamp(28px, 6vh, 44px) 18px 18px;
  }

  .signal-card-summary {
    padding: 24px 18px 20px;
  }

  .signal-headline {
    font-size: 4.8rem;
  }

  .analysis-panel {
    padding: 0 18px 20px;
  }
}

.hidden {
  display: none !important;
}

.login-card {
  max-width: 400px;
  margin: 4rem auto;
  padding: 3rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
}

.login-card h2 {
  margin-top: 0;
  color: var(--text);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.login-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  line-height: 1.5;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

#login-form input {
  padding: 1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line-strong);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}

#login-form input:focus {
  outline: none;
  border-color: var(--pending);
}

#login-form button {
  padding: 1rem;
  border: none;
  border-radius: var(--radius-md);
  background: var(--pending);
  color: #000;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
}

#login-form button:active {
  transform: scale(0.98);
}

#login-form button:hover {
  opacity: 0.9;
}

.login-error {
  margin-top: 1.5rem;
  color: var(--sell);
  font-size: 0.9rem;
  background: var(--sell-soft);
  padding: 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 94, 108, 0.2);
}