/* ===========================
   ThreadLens — styles.css
   Aesthetic: Editorial Brutalist / Ink & Grid
   =========================== */

:root {
  --bg: #0e0e0e;
  --surface: #161616;
  --border: #2a2a2a;
  --accent: #d4f54e;       /* electric lime */
  --accent-dim: #a8c93b;
  --text: #f0ece4;
  --text-muted: #6b6860;
  --text-dim: #3a3835;
  --error: #ff5c5c;
  --radius: 4px;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* Noise texture overlay */
.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ---- HEADER ---- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(14,14,14,0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.logo-icon {
  color: var(--accent);
  font-size: 1.4rem;
  line-height: 1;
  animation: pulse-hex 3s ease-in-out infinite;
}

@keyframes pulse-hex {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.usage-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 100px;
}

.usage-badge #usage-count {
  color: var(--accent);
  font-weight: 500;
}

.btn-upgrade {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent);
  color: #0e0e0e;
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
}

.btn-upgrade:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
}

/* ---- MAIN ---- */
main {
  flex: 1;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  padding: 60px 24px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ---- HERO ---- */
.hero {
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text);
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
  position: relative;
}

.hero-sub {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 480px;
}

/* ---- CARDS ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px 32px;
  transition: border-color var(--transition);
  animation: card-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card:hover {
  border-color: #3a3a3a;
}

.card-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ---- INPUT ROW ---- */
.input-row {
  display: flex;
  gap: 10px;
}

input[type="url"],
input[type="text"] {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input[type="url"]::placeholder,
input[type="text"]::placeholder {
  color: var(--text-dim);
}

input[type="url"]:focus,
input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212, 245, 78, 0.08);
}

/* ---- BUTTONS ---- */
.btn-primary {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--accent);
  color: #0e0e0e;
  border: none;
  padding: 12px 22px;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition), background var(--transition), opacity var(--transition);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-dim);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary.loading .btn-icon { display: none; }

.btn-large {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 0.95rem;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.82rem;
  padding: 10px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  width: 100%;
  margin-top: 10px;
  transition: border-color var(--transition), color var(--transition);
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

/* ---- FIELD ERROR ---- */
.field-error {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--error);
  margin-top: 8px;
}

/* ---- LOADING ---- */
.loading {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 8px 0;
  animation: fade-in 0.3s ease both;
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Ask loading dots */
.ask-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 14px;
}

.dot-pulse {
  display: flex;
  gap: 4px;
}

.dot-pulse span {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: dot-bounce 1.2s ease-in-out infinite;
}

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

@keyframes dot-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* ---- THREAD TITLE ---- */
.thread-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  line-height: 1.4;
}

/* ---- PROSE OUTPUT ---- */
.prose-output {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.75;
  color: #c8c4bc;
  white-space: pre-wrap;
  word-break: break-word;
  margin-top: 14px;
}

.prose-output strong, .prose-output b {
  color: var(--accent);
  font-weight: 500;
}

/* Render markdown-style bold */
.prose-output .section-title {
  display: block;
  color: var(--accent);
  font-weight: 500;
  margin: 12px 0 4px;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---- PAYWALL ---- */
.paywall-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(8px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fade-in 0.3s ease both;
}

.paywall-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 44px 40px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  animation: card-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.paywall-icon {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}

.paywall-box h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.paywall-box p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

.paywall-price {
  margin-bottom: 24px;
}

.paywall-price .price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.05em;
}

.paywall-price .period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 4px;
}

/* ---- PRO NOTICE ---- */
.pro-notice {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(212, 245, 78, 0.07);
  border: 1px solid rgba(212, 245, 78, 0.2);
  padding: 10px 18px;
  border-radius: var(--radius);
  text-align: center;
  letter-spacing: 0.05em;
}

/* ---- FOOTER ---- */
footer {
  border-top: 1px solid var(--border);
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

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

footer a:hover { color: var(--accent); }

/* ---- UTILITY ---- */
.hidden { display: none !important; }

/* ---- AUTH SCREEN ---- */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
}

.auth-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 44px 40px;
  max-width: 420px;
  width: 100%;
  animation: card-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.auth-box h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.auth-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

.auth-input-row {
  margin-bottom: 12px;
}

.auth-input-row input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 13px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.auth-input-row input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,245,78,0.08);
}

.auth-sent-icon { font-size: 2.5rem; margin-bottom: 16px; }

/* ---- USER EMAIL BADGE ---- */
.user-email-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 100px;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- SIGN OUT BUTTON ---- */
.btn-signout {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 100px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.btn-signout:hover { color: var(--error); border-color: var(--error); }

/* ---- RESPONSIVE ---- */
@media (max-width: 600px) {
  header { padding: 16px 20px; }
  main { padding: 40px 16px 60px; }
  .card { padding: 20px 18px; }
  .hero h1 { font-size: 2.2rem; }
  .input-row { flex-direction: column; }
  .btn-primary { width: 100%; justify-content: center; }
  footer { flex-direction: column; gap: 8px; text-align: center; }
  .paywall-box { padding: 32px 24px; }
}

/* ---- FREE BADGE ---- */
.free-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: rgba(212,245,78,0.08);
  border: 1px solid rgba(212,245,78,0.25);
  padding: 5px 12px;
  border-radius: 100px;
}