/* ============================================
   Allowance Design System
   Consumer | Calm | Trustworthy
   ============================================ */

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

:root {
  /* Brand tokens */
  --color-bg: #FFFFFF;
  --color-primary: #0A7C52;
  --color-primary-hover: #09754D;
  --color-accent: #0A7C52;
  --color-text: #0F172A;
  --color-text-muted: #475569;
  --color-border: #E2E8F0;
  --color-tint: #E6F4EF;
  --color-focus-ring: rgba(10, 124, 82, 0.24);

  --font-brand: 'Manrope', -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-ui: -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Backward-compatible aliases */
  --bg-primary: var(--color-bg);
  --bg-secondary: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8FAFC;

  --text-primary: var(--color-text);
  --text-secondary: var(--color-text-muted);
  --text-tertiary: #64748B;

  --success: var(--color-primary);
  --success-dim: var(--color-tint);
  --success-border: var(--color-border);

  --border: var(--color-border);
  --border-hover: #CBD5E1;


  /* Layout */
  --max-width: 1080px;
  --section-gap: 6rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

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

html {
  overflow-x: hidden;
}

body {
  font-family: var(--font-ui);
  color: var(--text-primary);
  background: var(--color-bg);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

h1,
h2 {
  font-family: var(--font-brand);
  font-weight: 700;
}

h3 {
  font-family: var(--font-brand);
  font-weight: 600;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  text-decoration-color: transparent;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
  color: var(--color-primary);
  text-decoration-color: var(--color-accent);
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* === Nav === */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-ui);
  display: inline-flex;
  align-items: baseline;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
  text-decoration: none;
}


.nav-cta {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  padding: 0.5rem 1.1rem;
  border-radius: 100px;
  transition: all 0.2s;
}

.nav-cta:hover {
  background: var(--color-tint);
  color: var(--color-primary-hover);
}

/* === Hero === */
.hero {
  padding: 10rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  color: var(--color-text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--color-border);
  padding: 0.45rem 1rem 0.45rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 1.85rem;
  letter-spacing: 0.01em;
  text-transform: none;
}

.yc-logo {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  flex-shrink: 0;
}

.yc-text {
  color: #FB651E;
  font-weight: 700;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 1.5rem;
  position: relative;
}

.hero h1 .highlight {
  color: var(--color-accent);
}

.hero h1 .highlight-period {
  color: var(--text-primary);
}

.hero .subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-ui);
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 0.8rem 2rem;
  border-radius: 100px;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-bg);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: var(--font-ui);
  background: transparent;
  color: var(--text-secondary);
  padding: 0.8rem 2rem;
  border: 1px solid var(--text-secondary);
  border-radius: 100px;
  transition: all 0.2s;
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

/* === Works With (hero inline) === */
.works-with-hero {
  font-size: 0.82rem;
  color: #2f3744;
  text-align: center;
  margin: 0 0 2rem;
}

/* === Chat Demo === */
.demo-section {
  padding: 2rem 0 var(--section-gap);
}

.demo-phone {
  max-width: 420px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

.demo-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.demo-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-tint);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.demo-avatar.chatgpt {
  background: var(--color-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-tertiary);
}

.demo-header-text {
  display: flex;
  flex-direction: column;
}

.demo-agent-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.demo-status {
  font-size: 0.7rem;
  color: var(--success);
}

.demo-chat {
  padding: 1.25rem;
  display: none;
  flex-direction: column;
  gap: 0.75rem;
}

.demo-chat.active {
  display: flex;
}

.demo-chat > * {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.demo-chat > .show {
  opacity: 1;
  transform: translateY(0);
}

.chat-msg {
  display: flex;
}

.user-msg {
  justify-content: flex-end;
}

.ai-msg {
  justify-content: flex-start;
}

.chat-bubble {
  max-width: 85%;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  line-height: 1.5;
}

.user-bubble {
  background: var(--color-primary);
  color: var(--color-bg);
  border-bottom-right-radius: 4px;
}

.ai-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
}

.chat-sub {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

.chat-receipt {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
}

.receipt-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 500;
}

.receipt-row.sub {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Allowance card (inline permission) */
.allowance-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.allowance-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.allowance-card-title {
  font-family: var(--font-ui);
  display: inline-flex;
  align-items: baseline;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.allowance-icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
}

.allowance-icon img {
  width: 100%;
  height: 100%;
  display: block;
}

.allowance-card-body {
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.allowance-rule {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}

.rule-label {
  color: var(--text-tertiary);
}

.rule-value {
  color: var(--text-primary);
  font-weight: 500;
}

.allowance-approve-btn {
  width: 100%;
  padding: 0.7rem;
  background: var(--color-primary);
  color: var(--color-bg);
  border: none;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  font-family: var(--font-ui);
}

.allowance-approve-btn:hover {
  background: var(--color-primary-hover);
}

/* Notification */
.allowance-notification {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1rem;
  background: var(--success-dim);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-md);
}

.notif-icon {
  width: 22px;
  height: 22px;
  color: var(--success);
  flex-shrink: 0;
}

.notif-text {
  display: flex;
  flex-direction: column;
}

.notif-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--success);
}

.notif-body {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Pending/scheduled notification variant */
.allowance-notification.pending {
  background: var(--color-tint);
  border-color: var(--border);
}

.allowance-notification.pending .notif-icon {
  color: var(--color-primary);
}

.allowance-notification.pending .notif-title {
  color: var(--color-primary);
}


/* === Pain Point Section === */
.pain-section {
  padding: 4rem 0;
  text-align: center;
}

.pain-text {
  font-size: 1.3rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.65;
}

.pain-highlight {
  color: var(--text-primary);
  font-weight: 600;
}

/* === Sections === */
section {
  padding: var(--section-gap) 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

section h2 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

section .section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.65;
}

/* === Features Grid === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 3rem;
  background: var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.feature-card {
  background: var(--bg-primary);
  padding: 2.25rem 2rem;
  transition: background 0.25s;
}

.feature-card:hover {
  background: var(--bg-card);
}

.feature-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 1.5;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* === How It Works === */
.steps-container {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  position: relative;
}

.step {
  position: relative;
  text-align: center;
  padding: 2rem 1.5rem;
}

.step-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-tint);
  border: 1px solid var(--color-border);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* === Use Cases === */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.usecase {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.usecase:hover {
  border-color: var(--border-hover);
}

.usecase-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.usecase h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.usecase p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === CTA Section === */
.cta-section {
  text-align: center;
  padding: 5rem 0 6rem;
}

.cta-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  position: relative;
  overflow: hidden;
}

.cta-box h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  position: relative;
}

.cta-box p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.05rem;
  position: relative;
}

/* === Toast === */
.toast {
  position: fixed;
  top: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card-hover);
  color: var(--color-primary);
  border: 1px solid var(--border);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  padding: 1.1rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 500;
  z-index: 1000;
  transition: opacity 0.5s;
}

.toast.fade-out {
  opacity: 0;
}

/* === Developer callout === */
.dev-callout {
  padding: 1.4rem 0 2rem;
  background: transparent;
}

.dev-callout-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 0.65rem 0.2rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.05rem 1.3rem;
  background: var(--bg-card);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.dev-callout-copy {
  display: flex;
  flex-direction: column;
  gap: 0.16rem;
}

.dev-callout-kicker {
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.dev-callout-copy p {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0;
}

.dev-callout-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.dev-callout-link {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-tertiary);
  border-bottom: 1px solid transparent;
  line-height: 1.2;
}

.dev-callout-link:hover {
  color: var(--text-secondary);
  border-bottom-color: var(--border-hover);
}

/* === Footer === */
footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-logo {
  font-family: var(--font-ui);
  display: inline-flex;
  align-items: baseline;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

footer a {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  transition: color 0.15s;
}

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

/* === Divider === */
.divider {
  height: 1px;
  background: var(--border);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* === Legal / Compliance Pages === */
.legal-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.legal-main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
}

.legal-shell {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
}

.legal-card h1 {
  font-size: 2.2rem;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.legal-lead {
  font-size: 1.02rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.legal-copy {
  display: grid;
  gap: 1rem;
}

.legal-copy section {
  padding: 0;
}

.legal-copy h2 {
  font-size: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin: 1rem 0 0.45rem;
}

.legal-copy p {
  font-size: 0.98rem;
  color: var(--text-primary);
}

.legal-copy ul {
  margin: 0.15rem 0 0.15rem 1.1rem;
  color: var(--text-primary);
}

.legal-copy li {
  margin: 0.3rem 0;
  font-size: 0.98rem;
}

.legal-note {
  color: var(--text-secondary);
}

.legal-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.legal-link {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* === Responsive === */
@media (max-width: 768px) {
  :root {
    --section-gap: 4rem;
  }

  .container {
    padding: 0 1.25rem;
  }

  .hero {
    padding: 7rem 0 3rem;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero .subtitle {
    font-size: 1.05rem;
  }

  section h2 {
    font-size: 1.7rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .steps-container {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .step {
    text-align: left;
    padding: 1.25rem 0;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
  }

  .step-number {
    margin-bottom: 0;
    flex-shrink: 0;
    margin-top: 0.15rem;
  }

  .usecases-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cta-box {
    padding: 3rem 1.5rem;
  }

  .pain-text {
    font-size: 1.1rem;
  }

  .dev-callout {
    padding: 1rem 0;
  }

  .dev-callout-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 0;
  }

  .dev-callout-actions {
    width: 100%;
    justify-content: flex-start;
    gap: 1rem;
  }

  footer .container {
    flex-direction: column;
    gap: 0.75rem;
  }

  .footer-links {
    justify-content: center;
  }

  .demo-phone {
    border-radius: var(--radius-lg);
  }

  .legal-main {
    align-items: flex-start;
    padding: 6.5rem 0 3rem;
  }

  .legal-card {
    padding: 1.5rem;
    border-radius: var(--radius-md);
  }

  .legal-card h1 {
    font-size: 1.85rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero .subtitle {
    font-size: 0.95rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .legal-copy p,
  .legal-lead {
    font-size: 0.95rem;
  }
}