/* ── Design tokens ── */
:root,
[data-theme="dark"] {
  --clr-bg: #0A0E27;
  --clr-amber: #FBBF24;
  --clr-amber-hover: #F59E0B;
  --clr-amber-dim: rgba(251, 191, 36, 0.12);
  --clr-amber-border: rgba(251, 191, 36, 0.22);
  --clr-surface: rgba(255, 255, 255, 0.04);
  --clr-surface-raised: rgba(255, 255, 255, 0.07);
  --clr-text: rgba(255, 255, 255, 0.92);
  --clr-muted: rgba(255, 255, 255, 0.45);
  --clr-error: #ef4444;

  /* Pico variable overrides */
  --pico-background-color: var(--clr-bg);
  --pico-color: var(--clr-text);

  --pico-primary: var(--clr-amber);
  --pico-primary-background: var(--clr-amber);
  --pico-primary-border: var(--clr-amber);
  --pico-primary-underline: rgba(251, 191, 36, 0.5);
  --pico-primary-hover: var(--clr-amber-hover);
  --pico-primary-hover-background: var(--clr-amber-hover);
  --pico-primary-hover-border: var(--clr-amber-hover);
  --pico-primary-inverse: #0A0E27;
  --pico-primary-focus: rgba(251, 191, 36, 0.3);

  --pico-secondary: rgba(255, 255, 255, 0.55);
  --pico-secondary-hover: rgba(255, 255, 255, 0.85);
  --pico-secondary-background: transparent;
  --pico-secondary-hover-background: rgba(255, 255, 255, 0.07);
  --pico-secondary-border: rgba(255, 255, 255, 0.25);
  --pico-secondary-hover-border: rgba(255, 255, 255, 0.5);
  --pico-secondary-inverse: var(--clr-bg);
  --pico-secondary-focus: rgba(255, 255, 255, 0.2);

  --pico-contrast: rgba(255, 255, 255, 0.85);
  --pico-contrast-hover: #ffffff;
  --pico-contrast-focus: rgba(255, 255, 255, 0.25);
  --pico-contrast-inverse: #0A0E27;

  --pico-muted-color: var(--clr-muted);
  --pico-muted-border-color: var(--clr-amber-border);

  --pico-card-background-color: var(--clr-surface);
  --pico-card-border-color: var(--clr-amber-border);
  --pico-card-sectioning-background-color: rgba(255, 255, 255, 0.025);

  --pico-form-element-background-color: rgba(255, 255, 255, 0.05);
  --pico-form-element-selected-background-color: rgba(251, 191, 36, 0.15);
  --pico-form-element-border-color: rgba(255, 255, 255, 0.12);
  --pico-form-element-color: var(--clr-text);
  --pico-form-element-placeholder-color: var(--clr-muted);
  --pico-form-element-active-background-color: rgba(255, 255, 255, 0.07);
  --pico-form-element-active-border-color: rgba(251, 191, 36, 0.55);
  --pico-form-element-focus-color: rgba(251, 191, 36, 0.28);
  --pico-form-element-disabled-background-color: rgba(255, 255, 255, 0.03);
  --pico-form-element-disabled-border-color: rgba(255, 255, 255, 0.06);
  --pico-form-element-disabled-color: rgba(255, 255, 255, 0.25);

  --pico-code-background-color: rgba(255, 255, 255, 0.07);
  --pico-code-color: var(--clr-amber);
  --pico-code-kbd-background-color: rgba(251, 191, 36, 0.12);
  --pico-code-kbd-color: var(--clr-amber);

  --pico-table-border-color: rgba(251, 191, 36, 0.12);
  --pico-table-row-stripped-background-color: rgba(255, 255, 255, 0.03);

  --pico-accordion-border-color: var(--clr-amber-border);
  --pico-accordion-active-summary-color: var(--clr-amber);
  --pico-accordion-close-summary-color: rgba(255, 255, 255, 0.65);
  --pico-accordion-open-summary-color: rgba(255, 255, 255, 0.85);

  --pico-ins-color: rgba(251, 191, 36, 0.15);
  --pico-del-color: var(--clr-error);

  --pico-font-family-sans-serif: 'Archivo', system-ui, -apple-system, sans-serif;
  --pico-border-radius: 0.375rem;
  --pico-nav-element-spacing-vertical: 0.9rem;
}

/* ── Global ── */
html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(ellipse at 15% 45%, rgba(40, 18, 90, 0.45) 0%, transparent 55%),
    radial-gradient(ellipse at 82% 15%, rgba(8, 28, 90, 0.3) 0%, transparent 50%),
    var(--clr-bg);
  background-attachment: fixed;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6,
hgroup > p:first-child,
hgroup > h1,
hgroup > h2,
hgroup > h3 {
  font-family: 'Space Grotesk', 'Archivo', system-ui, sans-serif;
}

hr {
  border-color: var(--clr-amber-border);
  opacity: 1;
}

/* ── Site header / nav ── */
body > header {
  background: rgba(10, 14, 39, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-amber-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-amber) !important;
  text-decoration: none;
}

.site-logo:hover {
  color: #ffffff !important;
}

/* ── Footer ── */
body > main + footer,
footer {
  border-top: 1px solid rgba(251, 191, 36, 0.1);
  text-align: center;
  padding: 1.5rem 0;
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--clr-muted);
}

footer a {
  color: var(--clr-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover {
  color: var(--clr-amber);
  text-decoration: none;
}

/* ── Cards / articles ── */
article {
  border: 1px solid var(--clr-amber-border) !important;
  background: var(--clr-surface) !important;
}

/* ── Buttons ── */
[role="button"],
button,
input[type="submit"],
input[type="button"] {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.2s ease;
}

button[type="submit"]:not(.outline),
[role="button"]:not(.outline):not(.secondary) {
  box-shadow: 0 0 16px rgba(251, 191, 36, 0.2);
}

button[type="submit"]:not(.outline):hover,
[role="button"]:not(.outline):not(.secondary):hover {
  box-shadow: 0 0 24px rgba(251, 191, 36, 0.35);
  transform: translateY(-1px);
}

a[role="button"].outline.secondary {
  border-color: rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.65);
  background: transparent;
}

a[role="button"].outline.secondary:hover {
  border-color: var(--clr-amber);
  color: var(--clr-amber);
  background: var(--clr-amber-dim);
}

/* ── Details / Accordion ── */
details summary {
  font-weight: 500;
}

details[open] summary {
  color: var(--clr-amber);
}

/* ── Layout ── */
.interview-wrap {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto;
}

/* ── Message bubbles ── */
.messages {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 200px;
}

.message {
  max-width: 85%;
  padding: 0.75rem 1rem;
  border-radius: 1rem;
  line-height: 1.55;
}

.message p {
  margin: 0;
}

.message--assistant {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom-left-radius: 0.25rem;
  align-self: flex-start;
  color: var(--clr-text);
}

.message--user {
  background: rgba(251, 191, 36, 0.14);
  border: 1px solid rgba(251, 191, 36, 0.28);
  color: rgba(255, 255, 255, 0.92);
  border-bottom-right-radius: 0.25rem;
  align-self: flex-end;
}

/* ── Answer form ── */
#answer-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

#answer-form textarea {
  resize: vertical;
}

/* ── Share hint ── */
.share-hint {
  color: var(--clr-muted);
}

.share-hint code {
  word-break: break-all;
  font-size: 0.8em;
}

/* ── Session done ── */
.session-done {
  text-align: center;
  padding: 1.5rem;
}

/* ── PRD view ── */
.prd-view header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.prd-content {
  line-height: 1.75;
}

.prd-content h1,
.prd-content h2,
.prd-content h3 {
  color: var(--clr-amber);
  letter-spacing: -0.01em;
}

.prd-content h2 {
  border-bottom: 1px solid var(--clr-amber-border);
  padding-bottom: 0.35rem;
  margin-top: 2rem;
}

.prd-content code {
  font-size: 0.87em;
}

/* ── Hero ── */
.hero {
  padding: 3rem 0 2rem;
}

.hero hgroup h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.hero hgroup p {
  color: var(--clr-muted);
  font-size: 1rem;
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}

.hero > p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 540px;
}

/* ── Utility ── */
.hidden {
  display: none !important;
}

/* ── PRD action banner ── */
.prd-action {
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.35);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.prd-action p {
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
}

.prd-action form {
  flex-shrink: 0;
}

/* ── Typing indicator ── */
.typing-dots {
  display: flex;
  gap: 5px;
  padding: 0.25rem 0;
  align-items: center;
}

.typing-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--clr-amber);
  opacity: 0.35;
  animation: typing-pulse 1.2s infinite ease-in-out;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-pulse {
  0%, 60%, 100% { opacity: 0.2; transform: scale(0.8); }
  30%            { opacity: 1;   transform: scale(1);   }
}

/* ── Stream error ── */
.stream-error {
  color: var(--clr-error);
  font-style: italic;
}

/* ── Referenz-URLs ── */
.refs-section {
  border-top: 1px solid var(--clr-amber-border);
  padding-top: 1rem;
}

.refs-section h4 {
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-muted);
}

.refs-ul {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ref-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  position: relative;
  transition: border-color 0.2s ease;
}

.ref-item:hover {
  border-color: var(--clr-amber-border);
}

.ref-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-right: 2rem;
}

.ref-title {
  font-size: 0.875rem;
  font-weight: 500;
  word-break: break-all;
  color: rgba(255, 255, 255, 0.8);
}

.ref-badge {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.1rem 0.45rem;
  border-radius: 0.25rem;
  white-space: nowrap;
}

.ref-badge--pending {
  background: rgba(251, 191, 36, 0.15);
  color: var(--clr-amber);
}

.ref-badge--ok {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}

.ref-badge--error {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.ref-excerpt {
  font-size: 0.8rem;
  color: var(--clr-muted);
  margin: 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.ref-delete {
  position: absolute;
  top: 0.4rem;
  right: 0.5rem;
  background: none;
  border: none;
  color: var(--clr-muted);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0.1rem 0.3rem;
  width: auto;
  margin: 0;
  transition: color 0.2s ease;
  box-shadow: none;
}

.ref-delete:hover {
  color: var(--clr-error);
  background: none;
  box-shadow: none;
  transform: none;
}

.refs-empty {
  color: var(--clr-muted);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

/* ── Admin ── */
.admin-transcript {
  max-height: 60vh;
  overflow-y: auto;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
}

/* ── PRD generation loading page ── */
.prd-generating-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.prd-preview {
  max-height: 60vh;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85em;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
}

/* ── Login page ── */
.login-error {
  color: var(--clr-error) !important;
}