/* ================================================
   marketing.css
   Shared styles for all public-facing pages:
   index, signup, reset-password, accept-invite
================================================ */

/* ------------------------------------------------
   Design tokens
------------------------------------------------ */
:root {
  --bg:          #ffffff;
  --bg2:         #f8fafc;
  --bg3:         #f1f5f9;
  --fg:          #0f172a;
  --fg2:         #1e293b;
  --muted:       #64748b;
  --muted2:      #94a3b8;
  --hairline:    #e2e8f0;
  --card:        #ffffff;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.06);
  --shadow-md:   0 4px 6px rgba(0,0,0,.04), 0 12px 32px rgba(0,0,0,.09);
  --shadow-lg:   0 8px 16px rgba(0,0,0,.05), 0 24px 56px rgba(0,0,0,.12);
  --cta-bg:      #0f172a;
  --cta-fg:      #ffffff;
  --radius:      16px;
  --radius-sm:   10px;
  --error-fg:    #b91c1c;
  --error-bg:    #fef2f2;
  --success-fg:  #15803d;
  --success-bg:  #f0fdf4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:          #0a0f1a;
    --bg2:         #0f172a;
    --bg3:         #141e2e;
    --fg:          #f1f5f9;
    --fg2:         #e2e8f0;
    --muted:       #94a3b8;
    --muted2:      #64748b;
    --hairline:    rgba(148,163,184,.14);
    --card:        #111827;
    --shadow-sm:   0 1px 3px rgba(0,0,0,.25), 0 4px 12px rgba(0,0,0,.25);
    --shadow-md:   0 4px 6px rgba(0,0,0,.25), 0 12px 32px rgba(0,0,0,.3);
    --shadow-lg:   0 8px 16px rgba(0,0,0,.3), 0 24px 56px rgba(0,0,0,.4);
    --cta-bg:      #f1f5f9;
    --cta-fg:      #0a0f1a;
    --error-fg:    #fca5a5;
    --error-bg:    rgba(185,28,28,.12);
    --success-fg:  #4ade80;
    --success-bg:  rgba(74,222,128,.08);
  }
}

/* ------------------------------------------------
   Reset & base
------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: 16px;
}

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

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

/* ------------------------------------------------
   Layout
------------------------------------------------ */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ------------------------------------------------
   Sticky header
------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}

@media (prefers-color-scheme: dark) {
  .site-header { background: rgba(10,15,26,.82); }
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: 16px;
}

.brand {
  font-weight: 750;
  font-size: 17px;
  letter-spacing: -.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none !important;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
}

.nav-links a {
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 500;
  transition: background .15s, color .15s;
  text-decoration: none !important;
}

.nav-links a:hover {
  background: var(--bg2);
  color: var(--fg);
}

.nav-cta {
  background: var(--cta-bg) !important;
  color: var(--cta-fg) !important;
  font-weight: 600 !important;
  border-radius: 999px !important;
}

.nav-cta:hover { filter: brightness(.9); }

/* ------------------------------------------------
   Buttons
------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 12px;
  border: 1.5px solid var(--hairline);
  background: transparent;
  color: var(--fg);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background .15s, filter .15s;
  text-decoration: none !important;
  white-space: nowrap;
  line-height: 1;
  font-family: inherit;
}

.btn-primary {
  background: var(--cta-bg);
  color: var(--cta-fg);
  border-color: transparent;
}

.btn-primary:hover { filter: brightness(.88); }
.btn-ghost:hover   { background: var(--bg2); }

.btn-lg {
  padding: 14px 26px;
  font-size: 16px;
  border-radius: 14px;
}

.btn-block {
  width: 100%;
  border-radius: 12px;
}

.btn:disabled,
.btn[disabled] {
  opacity: .5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ------------------------------------------------
   Footer
------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a { color: var(--muted); text-decoration: none !important; }
.footer-links a:hover { color: var(--fg); }

/* ------------------------------------------------
   Auth pages (signup, reset-password, accept-invite)
   Centered single-card layout
------------------------------------------------ */
.auth-main {
  min-height: calc(100vh - 56px - 85px); /* viewport minus header and footer */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.auth-card h1 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 6px;
  line-height: 1.2;
}

.auth-lead {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* Form fields */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--fg2);
}

.form-group input {
  display: block;
  width: 100%;
  padding: 10px 13px;
  font-size: 15px;
  font-family: inherit;
  border: 1.5px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--fg);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}

.form-group input:focus {
  border-color: var(--fg2);
  box-shadow: 0 0 0 3px rgba(15,23,42,.08);
}

@media (prefers-color-scheme: dark) {
  .form-group input:focus {
    box-shadow: 0 0 0 3px rgba(241,245,249,.1);
  }
}

/* Status messages */
.form-status {
  min-height: 20px;
  font-size: 13px;
  margin-top: 10px;
  line-height: 1.5;
  color: var(--muted);
}

.form-status.error   { color: var(--error-fg); }
.form-status.success { color: var(--success-fg); }

/* Hint / secondary link below form */
.form-hint {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
}

.form-hint a {
  color: var(--fg);
  font-weight: 600;
  text-decoration: underline !important;
}

/* Plan summary box (signup page) */
.plan-summary {
  margin-bottom: 24px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hairline);
  background: var(--bg2);
  font-size: 14px;
  line-height: 1.7;
}

.plan-summary p { margin: 0; color: var(--muted); }
.plan-summary p strong { color: var(--fg); }

/* ------------------------------------------------
   Responsive
------------------------------------------------ */
@media (max-width: 560px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .auth-card { padding: 24px 20px; }
}