/* ============================================================
   Paisabook — shared stylesheet
   Colors mirror lib/core/theme/app_colors.dart (light theme)
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Brand */
  --primary:           #6C4DFF;
  --primary-dark:      #4F2DDE;
  --primary-container: #EEE8FF;
  --secondary:         #9A7BFF;

  /* Gradient */
  --gradient: linear-gradient(135deg, #6C4DFF 0%, #9A7BFF 100%);

  /* Backgrounds */
  --app-bg:       #F7F7FC;
  --surface:      #FFFFFF;
  --surface-var:  #F3EEFF;
  --card:         #FFFFFF;

  /* Borders */
  --outline: #E8E6F2;
  --divider: #ECECF5;

  /* Text */
  --text-primary:   #171725;
  --text-secondary: #696974;
  --text-tertiary:  #A0A3BD;
  --text-disabled:  #C6C8D3;
  --text-inverse:   #FFFFFF;

  /* Status */
  --success:    #16C784;
  --success-bg: #EAFBF4;
  --warning:    #F5A623;
  --error:      #FF5A5F;
  --info:       #3B82F6;

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* Type */
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --max-width: 1100px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  background: var(--app-bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

section { padding-block: var(--space-2xl); }

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
  text-decoration: none;
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.nav__links a:hover { color: var(--primary); text-decoration: none; }

/* ---------- Hero ---------- */
.hero {
  padding-block: 80px 72px;
  text-align: center;
  background: var(--surface);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-container);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.hero__title span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero__mockup {
  max-width: 340px;
  margin-inline: auto;
  background: var(--gradient);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  color: white;
  text-align: left;
  box-shadow: 0 24px 60px rgba(108, 77, 255, 0.25);
}

.hero__mockup-label {
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.hero__mockup-amount {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.hero__mockup-sub {
  font-size: 0.85rem;
  opacity: 0.75;
  margin-bottom: var(--space-lg);
}

.hero__mockup-row {
  display: flex;
  justify-content: space-between;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.85rem;
}

.hero__mockup-row + .hero__mockup-row { margin-top: var(--space-xs); }
.hero__mockup-badge { background: rgba(255,255,255,0.2); border-radius: var(--radius-pill); padding: 2px 10px; font-size: 0.75rem; font-weight: 600; }
.hero__mockup-badge.green { background: rgba(22, 199, 132, 0.3); }
.hero__mockup-badge.red   { background: rgba(255, 90, 95, 0.3); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-pill);
  padding: 13px 28px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  text-decoration: none;
}

.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 6px 20px rgba(108, 77, 255, 0.35);
}

.btn--primary:hover { box-shadow: 0 10px 28px rgba(108, 77, 255, 0.45); }

.btn--outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn--outline:hover { background: var(--primary-container); }

/* ---------- Features ---------- */
.features { background: var(--app-bg); }

.section-label {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.section-title {
  text-align: center;
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.section-sub {
  text-align: center;
  color: var(--text-secondary);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: 0 8px 32px rgba(108, 77, 255, 0.1);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.feature-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.feature-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Stats strip ---------- */
.stats {
  background: var(--gradient);
  padding-block: var(--space-xl);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  text-align: center;
}

.stats__number {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.stats__label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  margin-top: 4px;
  font-weight: 500;
}

/* ---------- CTA section ---------- */
.cta-section {
  background: var(--surface);
  text-align: center;
}

.cta-card {
  background: var(--gradient);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  color: #fff;
}

.cta-card__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.cta-card__sub {
  font-size: 1rem;
  opacity: 0.8;
  margin-bottom: var(--space-xl);
}

.btn--white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.btn--white:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

/* ---------- Footer ---------- */
.footer {
  background: var(--text-primary);
  color: rgba(255,255,255,0.6);
  padding-block: var(--space-xl);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer__links a:hover { color: #fff; text-decoration: none; }

.footer__copy {
  font-size: 0.8rem;
  width: 100%;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
}

/* ---------- Policy / Legal pages ---------- */
.page-hero {
  background: var(--gradient);
  color: #fff;
  padding-block: 56px 48px;
  text-align: center;
}

.page-hero__eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.75;
  margin-bottom: var(--space-sm);
}

.page-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.page-hero__meta {
  opacity: 0.7;
  font-size: 0.9rem;
}

.legal-body {
  background: var(--surface);
}

.legal-content {
  max-width: 760px;
  margin-inline: auto;
  padding-block: var(--space-2xl);
  padding-inline: var(--space-lg);
}

.legal-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--primary-container);
}

.legal-content h2:first-of-type { margin-top: 0; }

.legal-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.legal-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.legal-content ul, .legal-content ol {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: var(--space-md);
}

.legal-content ol { list-style: decimal; }

.legal-content li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-xs);
}

.legal-content a { color: var(--primary); font-weight: 500; }

.legal-content .highlight-box {
  background: var(--primary-container);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.legal-content .highlight-box p { color: var(--text-primary); margin: 0; font-weight: 500; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .nav__links { display: none; }
  .hero { padding-block: 56px 48px; }
  .hero__cta { flex-direction: column; align-items: center; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
}