/* ---------------------------------------------------------------------
   ArthaChitra — visual identity
   A trading-terminal register: near-black panels, hairline grid lines,
   one signal-amber accent, monospace used only for genuine market data
   (prices, tickers, version numbers) rather than as decoration.
------------------------------------------------------------------------ */

:root {
  --bg: #0B0E14;
  --bg-panel: #11151D;
  --bg-panel-raised: #161B26;
  --grid-line: #232A38;
  --grid-line-soft: #1A2029;
  --text-primary: #E8EAED;
  --text-muted: #8A93A6;
  --text-faint: #5B6478;
  --accent: #F0A202;
  --accent-soft: rgba(240, 162, 2, 0.14);
  --accent-dim: #C98600;
  --positive: #2FBF71;
  --negative: #E5484D;
  --secondary: #3D5A80;

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 6px;
  --content-width: 1120px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

p { color: var(--text-muted); margin: 0 0 1em; max-width: 62ch; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mono { font-family: var(--font-mono); }

/* ------------------------- Header / Nav ------------------------- */

.site-header {
  border-bottom: 1px solid var(--grid-line);
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.brand-logo {
  height: 48px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.92rem;
}

.main-nav a {
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.main-nav a:hover { color: var(--text-primary); }

/* Hamburger toggle — hidden on desktop, shown under the mobile breakpoint below. */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  padding: 8px;
  color: var(--text-primary);
  cursor: pointer;
  line-height: 0;
}

.nav-toggle:hover { border-color: var(--text-faint); }

.nav-cta {
  color: var(--bg) !important;
  background: var(--accent);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-weight: 500;
}

.nav-cta:hover { background: var(--accent-dim); }

.link-button {
  background: none;
  border: none;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  padding: 0;
}

.link-button:hover { color: var(--text-primary); }

.inline-form { display: inline; margin: 0; }

/* ------------------------- Layout shells ------------------------- */

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; border-bottom: 1px solid var(--grid-line-soft); }
section:last-of-type { border-bottom: none; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 14px;
}

/* ------------------------- Hero ------------------------- */

.hero {
  padding: 96px 0 64px;
  border-bottom: 1px solid var(--grid-line-soft);
}

.hero-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  max-width: 14ch;
}

.hero .lede {
  font-size: 1.08rem;
  max-width: 46ch;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.96rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--accent-dim); }

.btn-ghost {
  background: transparent;
  border-color: var(--grid-line);
  color: var(--text-primary);
}
.btn-ghost:hover { border-color: var(--text-faint); }

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--grid-line-soft);
}

.hero-stats .stat-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--text-primary);
}

.hero-stats .stat-label {
  font-size: 0.82rem;
  color: var(--text-faint);
}

/* Chart illustration panel */

.chart-panel {
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  padding: 18px;
}

.chart-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.chart-panel-head .symbol { color: var(--text-primary); font-weight: 500; }
.chart-panel-head .price { color: var(--positive); }

.chart-panel svg { width: 100%; height: auto; display: block; }

/* ------------------------- Feature list ------------------------- */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--grid-line-soft);
  border: 1px solid var(--grid-line-soft);
  margin-top: 40px;
}

.feature-cell {
  background: var(--bg);
  padding: 32px 28px;
}

.feature-cell .index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  display: block;
  margin-bottom: 18px;
}

.feature-cell h3 {
  font-size: 1.08rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-cell p { font-size: 0.94rem; margin-bottom: 0; }

/* ------------------------- Brokers / datafeeds ------------------------- */

.integrations-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 40px;
}

.integrations-columns h3 {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-faint);
  margin-bottom: 16px;
  font-weight: 500;
}

.quote-board { border-top: 1px solid var(--grid-line); }

.quote-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 4px;
  border-bottom: 1px solid var(--grid-line-soft);
}

.quote-row .name { font-size: 0.98rem; color: var(--text-primary); }
.quote-row .meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-faint); }

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--positive);
  margin-right: 9px;
}

/* ------------------------- CTA band ------------------------- */

.cta-band {
  text-align: left;
  background: var(--bg-panel);
}

.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-band h2 { margin-bottom: 6px; font-size: 1.6rem; }

/* ------------------------- Account / auth page ------------------------- */

.auth-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 64px 24px 100px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.auth-panel {
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  padding: 8px;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--grid-line);
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 14px 0;
  font-size: 0.94rem;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent);
}

.auth-form { padding: 28px 24px; }

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  padding: 11px 12px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.96rem;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
}

.field-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.field-check input { width: auto; }

.validation-summary {
  color: var(--negative);
  font-size: 0.88rem;
  margin-bottom: 14px;
}

.field-validation {
  color: var(--negative);
  font-size: 0.8rem;
  margin-top: 4px;
  display: block;
}

.btn-block { width: 100%; justify-content: center; margin-top: 6px; }

.auth-side h2 { font-size: 1.5rem; }

.auth-side ul { padding-left: 18px; color: var(--text-muted); }
.auth-side li { margin-bottom: 10px; }

/* ------------------------- Download page ------------------------- */

.download-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px 110px;
  text-align: left;
}

.download-card {
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  padding: 32px;
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.download-card .version {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 4px;
}

.system-reqs {
  margin-top: 40px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text-muted);
}

.system-reqs div { padding: 6px 0; border-bottom: 1px solid var(--grid-line-soft); }

/* ------------------------- Contact ------------------------- */

.contact-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 36px;
}

.contact-email-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  padding: 18px 24px;
  color: var(--text-primary);
  transition: border-color 0.15s ease;
}

.contact-email-card:hover { border-color: var(--accent); }
.contact-email-card svg { color: var(--accent); flex-shrink: 0; }

.contact-email-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-bottom: 3px;
}

.contact-email-address { font-size: 1rem; color: var(--text-primary); }

.social-links {
  display: flex;
  gap: 14px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.social-link:hover { border-color: var(--accent); color: var(--text-primary); }

/* ------------------------- Admin ------------------------- */

.admin-shell { padding: 56px 24px 100px; }
.admin-narrow { max-width: 640px; margin: 0 auto; }

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 28px;
}

.admin-header h1 { margin-bottom: 4px; }
.admin-header p { margin: 0; }

.admin-search { display: flex; gap: 10px; }

.admin-search input {
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--text-primary);
  font-family: var(--font-body);
  min-width: 240px;
}

.admin-search input:focus { outline: none; border-color: var(--accent); }

.admin-back {
  display: inline-block;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 20px;
}
.admin-back:hover { color: var(--text-primary); }

.admin-banner {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 20px;
  border: 1px solid transparent;
}

.admin-banner-ok {
  background: rgba(47, 191, 113, 0.1);
  border-color: rgba(47, 191, 113, 0.35);
  color: var(--positive);
}

.admin-banner-error {
  background: rgba(229, 72, 77, 0.1);
  border-color: rgba(229, 72, 77, 0.35);
  color: var(--negative);
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
}

.admin-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  overflow: hidden;
  font-size: 0.92rem;
}

.admin-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.76rem;
  color: var(--text-faint);
  padding: 12px 16px;
  border-bottom: 1px solid var(--grid-line);
}

.admin-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--grid-line-soft);
  color: var(--text-primary);
}

.admin-table tr:last-child td { border-bottom: none; }

.admin-empty {
  text-align: center;
  color: var(--text-faint);
  padding: 32px 16px !important;
}

.admin-row-actions { display: flex; gap: 14px; }
.admin-row-actions a { color: var(--text-muted); font-size: 0.88rem; }
.admin-row-actions a:hover { color: var(--text-primary); }
.admin-danger-link:hover { color: var(--negative) !important; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-family: var(--font-mono);
}

.badge-admin { background: var(--accent-soft); color: var(--accent); }
.badge-moderator { background: rgba(61, 90, 128, 0.25); color: #9db4d1; }
.badge-muted { background: rgba(138, 147, 166, 0.12); color: var(--text-muted); }
.badge-active { background: rgba(47, 191, 113, 0.12); color: var(--positive); }
.badge-locked { background: rgba(229, 72, 77, 0.12); color: var(--negative); }

.admin-form { max-width: 460px; }

.admin-select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  padding: 11px 12px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.96rem;
}

.admin-select:focus { outline: none; border-color: var(--accent); }

.admin-textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  padding: 11px 12px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  resize: vertical;
}

.admin-textarea:focus { outline: none; border-color: var(--accent); }

.admin-meta-row {
  display: flex;
  gap: 32px;
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.admin-meta-label {
  display: block;
  font-size: 0.74rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.admin-confirm-card {
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
  border-radius: 8px;
  padding: 20px;
  margin: 24px 0;
}

.admin-confirm-email { font-family: var(--font-mono); font-size: 1rem; color: var(--text-primary); }
.admin-confirm-name { color: var(--text-muted); margin-top: 4px; }

.btn-danger { background: var(--negative); color: #fff; }
.btn-danger:hover { background: #c53539; }

/* ------------------------- Footer ------------------------- */

.site-footer {
  border-top: 1px solid var(--grid-line);
  padding: 28px 0;
}

.footer-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-faint);
  flex-wrap: wrap;
}

/* ------------------------- Responsive ------------------------- */

/* Tablet and below: collapse the nav into a hamburger-triggered dropdown. */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--grid-line);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease;
  }

  .main-nav.nav-open { max-height: 480px; }

  .main-nav a,
  .main-nav .link-button,
  .main-nav .inline-form {
    width: 100%;
  }

  .main-nav a,
  .main-nav .link-button {
    padding: 14px 24px;
    border-bottom: 1px solid var(--grid-line-soft);
    width: 100%;
    text-align: left;
    display: block;
  }

  .main-nav .nav-cta {
    margin: 12px 24px;
    width: calc(100% - 48px);
    display: flex;
    justify-content: center;
    text-align: center;
  }

  .hero-inner { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .integrations-columns { grid-template-columns: 1fr; }
  .auth-shell { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; row-gap: 16px; }
}

/* Phones */
@media (max-width: 640px) {
  .container, .header-inner, .hero-inner, .footer-inner { padding-left: 16px; padding-right: 16px; }

  section { padding: 56px 0; }
  .hero { padding: 40px 0 40px; }

  .hero h1 { font-size: clamp(1.75rem, 8vw, 2.4rem); max-width: none; }
  .hero .lede { max-width: none; }

  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }

  .hero-stats { gap: 20px; }

  .cta-band-inner { flex-direction: column; align-items: flex-start; }
  .cta-band-inner .btn { width: 100%; justify-content: center; }

  .contact-grid { flex-direction: column; align-items: stretch; }
  .contact-email-card { justify-content: flex-start; }
  .social-links { flex-wrap: wrap; }
  .social-link { flex: 1 1 30%; justify-content: center; }

  .footer-inner { flex-direction: column; gap: 6px; }

  /* Admin */
  .admin-shell { padding: 32px 16px 72px; }
  .admin-header { flex-direction: column; align-items: stretch; }
  .admin-header > div:last-child { flex-direction: column; align-items: stretch; }
  .admin-search { flex-direction: column; }
  .admin-search input { min-width: 0; width: 100%; }

  .admin-meta-row { flex-direction: column; gap: 14px; }

  .auth-shell { padding: 40px 16px 72px; }
  .auth-form { padding: 22px 18px; }

  .download-card { flex-direction: column; align-items: flex-start; }
  .download-card .btn { width: 100%; justify-content: center; }
}