:root {
  color-scheme: light;
  --bg: #eef3f9;
  --bg-glow: rgba(114, 140, 187, 0.18);
  --panel: rgba(255, 255, 255, 0.78);
  --panel-solid: #ffffff;
  --panel-border: rgba(142, 160, 190, 0.25);
  --panel-shadow: 0 20px 60px rgba(24, 39, 75, 0.12);
  --text: #162233;
  --muted: #5d6c82;
  --accent: #17499a;
  --accent-strong: #112747;
  --accent-soft: #e7f0ff;
  --success: #16623b;
  --warning: #875f14;
  --danger: #8d2a2a;
  --drop-border: rgba(89, 124, 178, 0.34);
  --drop-bg: linear-gradient(135deg, rgba(247, 250, 255, 0.98), rgba(234, 242, 255, 0.96));
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top center, var(--bg-glow), transparent 36%),
    linear-gradient(180deg, #f7f9fd 0%, var(--bg) 100%);
  color: var(--text);
}

body {
  min-height: 100vh;
}

.page-shell {
  width: min(1180px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 42px 0 56px;
}

.hero {
  display: grid;
  gap: 22px;
}

.topbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 14px;
}

.lang-switch {
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(142, 160, 190, 0.2);
  box-shadow: 0 8px 24px rgba(24, 39, 75, 0.08);
}

.lang-button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  min-height: 36px;
  min-width: 52px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

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

.lang-button.is-active {
  background: var(--accent-strong);
  color: #ffffff;
}

.hero-title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 760;
  letter-spacing: 0.02em;
  line-height: 1.05;
}

.hero-subtitle {
  margin: 0;
  max-width: 760px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--muted);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.8fr);
  gap: 22px;
}

.panel {
  background: var(--panel);
  backdrop-filter: blur(18px);
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  box-shadow: var(--panel-shadow);
}

.drop-panel {
  padding: 22px;
}

.drop-zone {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 300px;
  padding: 34px;
  text-align: center;
  border: 2px dashed var(--drop-border);
  border-radius: 24px;
  background: var(--drop-bg);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.drop-zone.is-active {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 18px 40px rgba(24, 73, 154, 0.16);
}

.drop-badge {
  display: inline-grid;
  place-items: center;
  width: 84px;
  height: 84px;
  margin-bottom: 18px;
  border-radius: 28px;
  background: linear-gradient(135deg, #edf4ff, #dbe9ff);
  color: var(--accent);
  font-size: 1.7rem;
  font-weight: 780;
  letter-spacing: 0.06em;
}

.drop-title {
  margin: 0 0 10px;
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-weight: 730;
}

.drop-text {
  margin: 0 auto;
  max-width: 580px;
  color: var(--muted);
  line-height: 1.6;
}

.drop-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
  justify-content: center;
}

.button {
  appearance: none;
  border: none;
  border-radius: 16px;
  min-height: 48px;
  padding: 0 20px;
  font: inherit;
  font-weight: 680;
  cursor: pointer;
  transition: transform 180ms ease, opacity 180ms ease, background 180ms ease, color 180ms ease;
}

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

.button-primary {
  background: var(--accent-strong);
  color: #ffffff;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
  border: 1px solid rgba(142, 160, 190, 0.32);
}

.status-panel {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.eyebrow {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.15em;
  color: var(--muted);
}

.status-value {
  margin: 0;
  font-size: clamp(1.6rem, 2vw, 2rem);
  font-weight: 760;
  line-height: 1.15;
  color: var(--accent);
}

.status-note,
.privacy-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.privacy-note {
  padding-top: 8px;
  border-top: 1px solid rgba(142, 160, 190, 0.18);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.result-card {
  padding: 22px;
}

.result-value {
  margin: 12px 0 0;
  font-size: clamp(1.24rem, 2vw, 1.92rem);
  font-weight: 740;
  line-height: 1.25;
  word-break: break-word;
}

.result-value.subtle {
  font-size: 1.08rem;
  font-weight: 620;
}

.debug-panel {
  margin-top: 22px;
  overflow: hidden;
}

.support-panel {
  margin-top: 18px;
  padding: 24px 22px 22px;
}

.support-header {
  margin-bottom: 18px;
}

.support-title {
  margin: 8px 0 10px;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.15;
  font-weight: 740;
}

.support-copy {
  margin: 0;
  max-width: 780px;
  color: var(--muted);
  line-height: 1.6;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.support-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(142, 160, 190, 0.18);
}

.support-brand {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 720;
}

.support-group + .support-group {
  margin-top: 14px;
}

.support-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.support-badge.is-active {
  background: rgba(22, 98, 59, 0.12);
  color: var(--success);
}

.support-badge.is-tentative {
  background: rgba(135, 95, 20, 0.12);
  color: var(--warning);
}

.support-badge.is-planned,
.support-badge.is-research {
  background: rgba(23, 73, 154, 0.12);
  color: var(--accent);
}

.support-badge.is-unavailable {
  background: rgba(141, 42, 42, 0.12);
  color: var(--danger);
}

.support-model-list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.support-model {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(238, 243, 249, 0.95);
  border: 1px solid rgba(142, 160, 190, 0.16);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 560;
}

.debug-panel[open] summary {
  border-bottom: 1px solid rgba(142, 160, 190, 0.18);
}

.debug-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  cursor: pointer;
  padding: 20px 22px;
}

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

.debug-caption {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.debug-chevron {
  color: var(--muted);
  font-size: 1.4rem;
  transition: transform 180ms ease;
}

.debug-panel[open] .debug-chevron {
  transform: rotate(90deg);
}

.debug-content {
  padding: 18px 22px 22px;
}

.debug-output {
  margin: 0;
  padding: 18px;
  min-height: 220px;
  overflow: auto;
  border-radius: 18px;
  background: #10192a;
  color: #d7e2f0;
  border: 1px solid #16253a;
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
  font-size: 0.84rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.feedback-panel {
  margin-top: 22px;
  padding: 24px 22px 22px;
}

.feedback-header {
  margin-bottom: 20px;
}

.feedback-title {
  margin: 8px 0 10px;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.15;
  font-weight: 740;
}

.feedback-copy {
  margin: 0;
  max-width: 780px;
  color: var(--muted);
  line-height: 1.6;
}

.feedback-form {
  display: grid;
  gap: 18px;
}

.feedback-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field-full {
  grid-column: 1 / -1;
}

.field-label {
  font-size: 0.92rem;
  font-weight: 650;
  color: var(--text);
}

.field-input {
  width: 100%;
  min-height: 50px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(142, 160, 190, 0.28);
  background: rgba(255, 255, 255, 0.94);
  color: var(--text);
  font: inherit;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.field-input:focus {
  outline: none;
  border-color: rgba(23, 73, 154, 0.48);
  box-shadow: 0 0 0 4px rgba(23, 73, 154, 0.12);
  background: #ffffff;
}

.field-textarea {
  min-height: 150px;
  resize: vertical;
}

.feedback-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.feedback-status {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(142, 160, 190, 0.2);
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.pill strong {
  color: var(--text);
}

.helper-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.is-success {
  color: var(--success);
}

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

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

.hidden-input {
  display: none;
}

@media (max-width: 900px) {
  .hero-grid,
  .results-grid,
  .support-grid,
  .feedback-grid {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100vw - 28px, 1180px);
    padding-top: 28px;
  }

  .drop-zone {
    min-height: 260px;
    padding: 26px;
  }
}