/* ================================================================
   VITAL LOGIC — PUBLIC AUTH & CHANGELOG PAGE STYLES
   Brand: Connected Momentum (VL-PUBLIC-001 R2)
   Scope: login.php, pages/register.php, whats-new.php, terms.php, privacy.php
   Standalone — does not depend on landing.css.
   Structure:
     1. Design tokens
     2. Reset / base
     3. Shared brand lockup + back link
     4. Buttons / pills / inputs
     5. Login (two-zone shell)
     6. Register (single card shell)
     7. What's New (timeline page)
     8. Responsive
     9. Accessibility
     10. Legal Pages (Terms / Privacy)
================================================================ */

/* 1. DESIGN TOKENS ------------------------------------------------ */
:root {
  --warm-canvas: #FAF8F4;
  --surface: #FFFFFF;
  --vital-navy: #0B1220;
  --deep-navy: #111827;
  --vital-indigo: #5B5BF7;
  --action-indigo: #4F46E5;
  --vital-violet: #7C5CFC;
  --momentum-coral: #F26A4F;
  --text-secondary-light: #667085;
  --text-secondary-dark: #B7C0D1;

  --border-light: rgba(11, 18, 32, 0.09);
  --border-on-navy: rgba(255, 255, 255, 0.12);
  --shadow-card: 0 1px 2px rgba(11,18,32,0.04), 0 12px 32px -12px rgba(11,18,32,0.16);
  --shadow-card-lg: 0 4px 10px rgba(11,18,32,0.06), 0 28px 60px -20px rgba(11,18,32,0.28);

  --danger: #DC2626;
  --danger-light: #FEF2F2;
  --danger-border: #FECACA;
  --warning-text: #92400E;
  --warning-light: #FEF3C7;
  --warning-border: #FDE68A;
  --success-text: #15803D;
  --success-light: #DCFCE7;
  --success-border: #BBF7D0;

  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. RESET / BASE -------------------------------------------------- */
.vlp, .vlp *, .vlp *::before, .vlp *::after { box-sizing: border-box; }
.vlp {
  font-family: var(--font-body);
  color: var(--vital-navy);
  background: var(--warm-canvas);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
.vlp img { max-width: 100%; display: block; }
.vlp a { color: inherit; text-decoration: none; }
.vlp ul { list-style: none; margin: 0; padding: 0; }
.vlp button { font-family: inherit; cursor: pointer; }
.vlp h1, .vlp h2, .vlp h3, .vlp h4 { margin: 0; font-weight: 400; }
.vlp p { margin: 0; }
.vlp-h-display { font-family: var(--font-display); font-weight: 400; letter-spacing: -0.01em; line-height: 1.1; }

/* 3. BRAND LOCKUP + BACK LINK --------------------------------------- */
.vlp-back-link {
  position: fixed; top: 22px; left: 26px; z-index: 20;
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--text-secondary-light);
  padding: 8px 10px; border-radius: var(--radius-pill);
  transition: color .15s ease, background-color .15s ease;
}
.vlp-back-link:hover { color: var(--vital-navy); background: rgba(11,18,32,0.05); }
.vlp-back-link svg { flex-shrink: 0; }

.vlp-brand-lockup { display: flex; align-items: center; gap: 12px; }
.vlp-brand-lockup img { height: 44px; width: auto; }
.vlp-brand-lockup span { font-family: var(--font-display); font-size: 32px; color: var(--vital-navy); }
.vlp-brand-lockup.on-navy span { color: #fff; }

/* 4. BUTTONS / PILLS / INPUTS --------------------------------------- */
.vlp-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 13px 24px; border-radius: var(--radius-pill);
  font-size: 14.5px; font-weight: 600; font-family: var(--font-body);
  border: 1px solid transparent; cursor: pointer;
  transition: transform .18s var(--ease-out), box-shadow .18s var(--ease-out), background-color .18s ease;
}
.vlp-btn:hover { transform: translateY(-1px); }
.vlp-btn-primary { background: var(--action-indigo); color: #fff; box-shadow: 0 6px 15px -6px rgba(79,70,229,0.45); }
.vlp-btn-primary:hover { background: #4338CA; }
.vlp a.vlp-btn-primary { color: #fff; }

.vlp-field { margin-bottom: 16px; }
.vlp-label {
  display: block; font-size: 12px; font-weight: 600; color: var(--text-secondary-light);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px;
}
.vlp-input {
  width: 100%; background: #F9F8F5; border: 1.5px solid var(--border-light);
  border-radius: var(--radius-sm); padding: 11px 14px; font-size: 14.5px;
  font-family: var(--font-body); color: var(--vital-navy); outline: none;
  transition: border-color .15s ease, background-color .15s ease, box-shadow .15s ease;
}
.vlp-input:hover { border-color: rgba(11,18,32,0.22); }
.vlp-input:focus { border-color: var(--vital-indigo); background: #fff; box-shadow: 0 0 0 3px rgba(91,91,247,0.15); }
.vlp-input::placeholder { color: #A7ADB8; }
.vlp-hint { font-size: 11.5px; color: var(--text-secondary-light); margin-top: 5px; }

.vlp-notice {
  display: flex; align-items: flex-start; gap: 8px;
  border-radius: var(--radius-sm); padding: 11px 14px;
  font-size: 13px; font-weight: 500; margin-bottom: 16px; line-height: 1.5;
}
.vlp-notice svg { flex-shrink: 0; margin-top: 1px; }
.vlp-notice-error   { background: var(--danger-light);  border: 1px solid var(--danger-border);  color: var(--danger); }
.vlp-notice-warning { background: var(--warning-light); border: 1px solid var(--warning-border); color: var(--warning-text); }
.vlp-notice-success { background: var(--success-light); border: 1px solid var(--success-border); color: var(--success-text); }

.vlp-trial-chip {
  display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap;
  background: rgba(91,91,247,0.08); border: 1px solid rgba(91,91,247,0.18);
  color: var(--action-indigo); border-radius: var(--radius-sm);
  padding: 11px 14px; font-size: 13px; font-weight: 600; margin-bottom: 22px;
}
.vlp-trial-chip svg { flex-shrink: 0; color: var(--momentum-coral); }

/* 5. LOGIN — TWO-ZONE SHELL ------------------------------------------ */
.vlp-auth-page { display: flex; align-items: center; justify-content: center; padding: 90px 24px 48px; }
.vlp-auth-shell {
  display: grid; grid-template-columns: 1fr 400px;
  width: 100%; max-width: 940px; min-height: 560px;
  background: var(--surface); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-card-lg); border: 1px solid var(--border-light);
}

.vlp-brand-panel {
  background:
    radial-gradient(60% 55% at 78% 18%, rgba(124,92,252,0.30), transparent 70%),
    radial-gradient(50% 45% at 12% 88%, rgba(242,106,79,0.14), transparent 70%),
    linear-gradient(160deg, var(--vital-navy) 0%, var(--deep-navy) 55%, #0d1425 100%);
  padding: 44px 46px; display: flex; flex-direction: column; justify-content: center;
  position: relative; overflow: hidden;
}
.vlp-brand-panel .vlp-brand-lockup { margin-bottom: 40px; }
.vlp-brand-headline { font-size: clamp(1.9rem, 2.6vw, 2.4rem); color: #fff; margin-bottom: 14px; }
.vlp-brand-headline em { font-style: normal; color: #C9C6FF; }
.vlp-brand-desc { font-size: 14.5px; color: var(--text-secondary-dark); max-width: 340px; margin-bottom: 30px; line-height: 1.65; }
.vlp-brand-feature-list { display: grid; gap: 13px; }
.vlp-brand-feature { display: flex; align-items: center; gap: 10px; }
.vlp-brand-feature svg { color: var(--momentum-coral); flex-shrink: 0; }
.vlp-brand-feature span { font-size: 13.5px; color: #E4E7EF; font-weight: 500; }

.vlp-form-panel { padding: 52px 44px; display: flex; flex-direction: column; justify-content: center; }
.vlp-form-mobile-brand { display: none; margin-bottom: 22px; }
.vlp-form-title { font-family: var(--font-display); font-size: 26px; color: var(--vital-navy); margin-bottom: 6px; }
.vlp-form-subtitle { font-size: 14px; color: var(--text-secondary-light); margin-bottom: 28px; }
.vlp-form-footer {
  margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--border-light);
  text-align: center; font-size: 13px; color: var(--text-secondary-light);
}
.vlp-form-footer a { color: var(--action-indigo); font-weight: 600; }
.vlp-form-footer a:hover { text-decoration: underline; }

/* 6. REGISTER — SINGLE CARD SHELL ------------------------------------ */
.vlp-card-page { display: flex; align-items: center; justify-content: center; padding: 90px 24px 48px; }
.vlp-card-shell {
  width: 100%; max-width: 460px; background: var(--surface);
  border: 1px solid var(--border-light); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card-lg); padding: 44px 40px;
}
.vlp-card-shell .vlp-brand-lockup { margin-bottom: 30px; }

/* 7. WHAT'S NEW — TIMELINE PAGE --------------------------------------- */
.vlp-wn-nav {
  position: sticky; top: 0; z-index: 50; background: rgba(250,248,244,0.86);
  backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border-light);
}
.vlp-wn-nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 16px 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.vlp-wn-nav-links { display: flex; align-items: center; gap: 26px; font-size: 14px; font-weight: 500; color: #3a3f4b; }
.vlp-wn-nav-links a:hover { color: var(--vital-navy); }
.vlp-wn-nav-actions { display: flex; align-items: center; gap: 12px; }
.vlp-wn-nav-actions .vlp-btn-primary { width: auto; padding: 9px 18px; font-size: 13.5px; }

.vlp-wn-container { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.vlp-wn-header { padding: 56px 0 12px; text-align: center; }
.vlp-wn-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--action-indigo); background: rgba(91,91,247,0.08);
  padding: 6px 14px; border-radius: var(--radius-pill); margin-bottom: 18px;
}
.vlp-wn-eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--momentum-coral); }
.vlp-wn-header h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: 14px; }
.vlp-wn-header p { font-size: 15px; color: var(--text-secondary-light); max-width: 520px; margin: 0 auto; line-height: 1.7; }

.vlp-wn-timeline { padding: 36px 0 90px; }
.vlp-wn-month {
  font-size: 12px; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--text-secondary-light); margin: 40px 0 16px;
}
.vlp-wn-month:first-child { margin-top: 0; }
.vlp-wn-entry {
  background: var(--surface); border: 1px solid var(--border-light);
  border-radius: var(--radius-md); padding: 22px 24px; margin-bottom: 14px;
  box-shadow: var(--shadow-card);
}
.vlp-wn-tags { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.vlp-wn-tag { font-size: 11px; font-weight: 700; padding: 3px 11px; border-radius: var(--radius-pill); letter-spacing: 0.02em; }
.vlp-wn-tag-new      { background: rgba(91,91,247,0.1);  color: var(--action-indigo); }
.vlp-wn-tag-improved { background: rgba(124,92,252,0.12); color: #6D4FE0; }
.vlp-wn-entry-title { font-size: 16px; font-weight: 700; color: var(--vital-navy); margin-bottom: 6px; letter-spacing: -0.01em; }
.vlp-wn-entry-body { font-size: 14px; color: var(--text-secondary-light); line-height: 1.65; }

.vlp-wn-footer { text-align: center; padding: 8px 0 64px; font-size: 13px; color: var(--text-secondary-light); }
.vlp-wn-footer a { color: var(--action-indigo); font-weight: 600; }

.vlp-back-to-top {
  position: fixed; right: 22px; bottom: 22px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--vital-navy); color: #fff; border: none; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease; box-shadow: var(--shadow-card); z-index: 90;
}
.vlp-back-to-top.visible { opacity: 1; pointer-events: auto; transform: none; }

/* 8. RESPONSIVE ------------------------------------------------------- */
@media (max-width: 860px) {
  .vlp-auth-shell { grid-template-columns: 1fr; max-width: 440px; }
  .vlp-brand-panel { display: none; }
  .vlp-form-panel { padding: 40px 30px; }
  .vlp-form-mobile-brand { display: flex; }
}
@media (max-width: 560px) {
  .vlp-back-link { top: 16px; left: 16px; font-size: 0; padding: 8px; }
  .vlp-back-link span { display: none; }
  .vlp-auth-page, .vlp-card-page { padding: 76px 16px 32px; }
  .vlp-card-shell { padding: 34px 24px; }
  .vlp-form-panel { padding: 36px 22px; }
  .vlp-wn-nav-links { display: none; }
  .vlp-wn-nav-inner { padding: 14px 20px; }
  .vlp-wn-container { padding: 0 18px; }
  .vlp-wn-header { padding: 40px 0 8px; }
}

/* 9. ACCESSIBILITY — FOCUS VISIBLE ------------------------------------ */
.vlp a:focus-visible, .vlp button:focus-visible, .vlp input:focus-visible {
  outline: 2px solid var(--vital-indigo); outline-offset: 3px; border-radius: 4px;
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  .vlp * { transition-duration: .001ms !important; }
}

/* 10. LEGAL PAGES (Terms / Privacy) — added 2026-08-29 -------------- */
.vlp-legal-container { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.vlp-legal-header { padding: 56px 0 8px; }
.vlp-legal-header h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: 10px; }
.vlp-legal-meta { font-size: 13px; color: var(--text-secondary-light); margin-bottom: 10px; }
.vlp-legal-intro { font-size: 15px; color: var(--text-secondary-light); line-height: 1.7; max-width: 580px; }

.vlp-legal-body { padding: 20px 0 80px; font-size: 15px; line-height: 1.75; color: var(--vital-navy); }
.vlp-legal-body h2 { font-family: var(--font-body); font-size: 19px; font-weight: 700; letter-spacing: -0.01em; margin: 38px 0 12px; }
.vlp-legal-body h2:first-child { margin-top: 0; }
.vlp-legal-body p { margin: 0 0 14px; color: #3a3f4b; }
.vlp-legal-body ul, .vlp-legal-body ol { margin: 0 0 14px; padding-left: 22px; color: #3a3f4b; }
.vlp-legal-body li { margin-bottom: 8px; }
.vlp-legal-body a { color: var(--action-indigo); font-weight: 600; }
.vlp-legal-body a:hover { text-decoration: underline; }
.vlp-legal-body strong { color: var(--vital-navy); }

.vlp-legal-footer {
  max-width: 720px; margin: 0 auto; padding: 28px 24px 64px; text-align: center;
  font-size: 13px; color: var(--text-secondary-light); border-top: 1px solid var(--border-light);
}
.vlp-legal-footer a { color: var(--action-indigo); font-weight: 600; }
.vlp-legal-footer-links { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }

.vlp-mini-legal-links { text-align: center; font-size: 12px; color: var(--text-secondary-light); margin-top: 18px; }
.vlp-mini-legal-links a { color: var(--text-secondary-light); font-weight: 600; }
.vlp-mini-legal-links a:hover { color: var(--action-indigo); }

.vlp-legal-disclosure { font-size: 12px; color: var(--text-secondary-light); text-align: center; margin-top: 14px; line-height: 1.6; }
.vlp-legal-disclosure a { color: var(--text-secondary-light); font-weight: 600; }
.vlp-legal-disclosure a:hover { color: var(--action-indigo); }

@media (max-width: 560px) {
  .vlp-legal-container, .vlp-legal-footer { padding-left: 18px; padding-right: 18px; }
  .vlp-legal-header { padding: 40px 0 8px; }
}