/*
 * IRDA marketing site — nutritionist vertical landing page.
 * Token system ported 1:1 from irda-partner-frontend-v1/src/index.css so this
 * page reads as the front door to the same product, not a separate brand.
 */

 :root {
    --color-bg: #f2f4ee;
    --color-surface: #ffffff;
    --color-surface-alt: #e8ece1;
    --color-border: #dce2d3;
  
    --color-ink: #1c241c;
    --color-ink-soft: #657064;
    --color-ink-faint: #98a392;
  
    --color-accent: #2f6f62;
    --color-accent-soft: #dceae3;
    --color-accent-ink: #ffffff;
  
    --color-data: #b97a2e;
    --color-data-soft: #f2e3cc;
  
    --color-alert: #b14c3e;
    --color-alert-soft: #f3dad4;
  
    --font-ui: "Inter", "Inter Variable", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  
    --radius: 0.625rem;
    --radius-card: 14px;
    --radius-lg: 20px;
    --radius-chip: 999px;
  
    --shadow-btn: 0 1px 2px rgba(28, 36, 28, 0.06), 0 0 0 1px var(--color-border);
    --shadow-card: 0 1px 2px rgba(28, 36, 28, 0.04), 0 4px 16px rgba(28, 36, 28, 0.06);
    --shadow-raised: 0 2px 6px rgba(28, 36, 28, 0.08), 0 8px 24px rgba(28, 36, 28, 0.08);
  
    --container: 1120px;
  }
  
  * {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
      scroll-behavior: auto !important;
    }
  }
  
  body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-ui);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }
  
  img {
    max-width: 100%;
    display: block;
  }
  
  a {
    color: inherit;
  }
  
  .container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
  }
  
  .mono {
    font-family: var(--font-mono);
  }
  
  :focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 4px;
  }
  
  /* ---------- Kickers / chips ---------- */
  
  .kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: var(--color-accent-soft);
    border-radius: var(--radius-chip);
    padding: 6px 14px;
  }
  
  .kicker-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--color-accent);
    animation: pixel-on 1.6s ease-in-out infinite;
  }
  
  @keyframes pixel-on {
    0%,
    100% {
      opacity: 0.25;
    }
    50% {
      opacity: 1;
    }
  }
  
  /* ---------- Header ---------- */
  
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--color-bg) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
  }
  
  .site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    height: 72px;
  }
  
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-ink);
    flex-shrink: 0;
  }
  
  .brand-logo {
    height: 22px;
    aspect-ratio: 576 / 432;
    width: auto;
    background-color: var(--color-ink);
    -webkit-mask: url("logo.svg") no-repeat center / contain;
    mask: url("logo.svg") no-repeat center / contain;
    flex-shrink: 0;
  }
  
  .brand-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-ink-faint);
    border-left: 1px solid var(--color-border);
    padding-left: 10px;
    display: none;
  }
  
  .site-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    margin: 0 auto;
  }
  
  .site-nav a {
    text-decoration: none;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--color-ink-soft);
    transition: color 150ms ease;
  }
  
  .site-nav a:hover {
    color: var(--color-ink);
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
  }
  
  .lang-switch {
    display: flex;
    align-items: center;
    gap: 2px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--color-ink-faint);
  }
  
  .lang-switch a {
    text-decoration: none;
    color: var(--color-ink-faint);
    padding: 4px 6px;
    border-radius: 6px;
    transition: color 150ms ease, background-color 150ms ease;
  }
  
  .lang-switch a:hover {
    color: var(--color-ink);
    background: var(--color-surface-alt);
  }
  
  .lang-switch a[aria-current="true"] {
    color: var(--color-ink);
    font-weight: 600;
  }
  
  .lang-switch span {
    color: var(--color-ink-faint);
  }
  
  .login-group {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    padding: 9px 18px;
    border-radius: var(--radius);
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 150ms ease, background-color 150ms ease, border-color 150ms ease, color 150ms ease;
    white-space: nowrap;
  }
  
  .btn-sm {
    font-size: 13.5px;
    padding: 7px 14px;
  }
  
  .btn-primary {
    background: var(--color-accent);
    color: var(--color-accent-ink);
    box-shadow: var(--shadow-btn);
  }
  
  .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-raised);
  }
  
  .btn-outline {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
  }
  
  .btn-outline:hover {
    background: var(--color-accent-soft);
  }
  
  .btn-ghost {
    background: var(--color-surface);
    color: var(--color-ink);
    border-color: var(--color-border);
    box-shadow: var(--shadow-btn);
  }
  
  .btn-ghost:hover {
    background: var(--color-surface-alt);
  }
  
  .btn-lg {
    padding: 13px 26px;
    font-size: 15.5px;
  }
  
  .nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-ink);
  }
  
  .nav-toggle svg {
    width: 18px;
    height: 18px;
  }
  
  /* ---------- Hero ---------- */
  
  .hero {
    padding: 88px 0 96px;
    position: relative;
    overflow: hidden;
  }
  
  .hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
  }
  
  .hero-copy h1 {
    font-size: clamp(2.1rem, 3.4vw + 1rem, 3.35rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 18px 0 20px;
    font-weight: 700;
    color: var(--color-ink);
  }
  
  .hero-copy h1 em {
    font-style: normal;
    color: var(--color-accent);
  }
  
  .hero-copy p {
    font-size: 1.1rem;
    color: var(--color-ink-soft);
    max-width: 46ch;
    margin: 0 0 32px;
  }
  
  .hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 28px;
  }
  
  .hero-meta {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    font-size: 13.5px;
    color: var(--color-ink-faint);
  }
  
  .hero-meta li {
    display: flex;
    align-items: center;
    gap: 7px;
  }
  
  .hero-meta svg {
    width: 14px;
    height: 14px;
    color: var(--color-accent);
    flex-shrink: 0;
  }
  
  .hero-meta ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: contents;
  }
  
  /* ---------- Hero mockup card (echoes the partner workspace UI) ---------- */
  
  .mock-shell {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-raised);
    display: grid;
    grid-template-columns: 148px 1fr;
    overflow: hidden;
    min-height: 360px;
  }
  
  .mock-sidebar {
    background: var(--color-surface-alt);
    border-right: 1px solid var(--color-border);
    padding: 14px 10px;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  
  .mock-sidebar-logo {
    height: 14px;
    aspect-ratio: 576 / 432;
    width: auto;
    background-color: var(--color-ink-faint);
    -webkit-mask: url("logo.svg") no-repeat center / contain;
    mask: url("logo.svg") no-repeat center / contain;
    margin: 2px 6px 4px;
  }
  
  .mock-sidebar-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-ink-faint);
    padding: 0 6px;
  }
  
  .mock-patient {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 6px;
    border-radius: 8px;
    font-size: 12.5px;
    color: var(--color-ink-soft);
  }
  
  .mock-patient.active {
    background: var(--color-surface);
    color: var(--color-ink);
    box-shadow: 0 0 0 1px var(--color-border);
  }
  
  .mock-avatar {
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 9.5px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  
  .mock-patient-name {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
    overflow: hidden;
  }
  
  .mock-patient-name b {
    font-weight: 600;
    font-size: 12.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .mock-patient-name span {
    font-size: 10.5px;
    color: var(--color-ink-faint);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .mock-flag {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--color-alert);
    margin-left: auto;
    flex-shrink: 0;
  }
  
  .mock-chat {
    display: flex;
    flex-direction: column;
    padding: 18px 20px;
    gap: 14px;
  }
  
  .mock-chat-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
  }
  
  .mock-chat-header b {
    font-size: 13.5px;
  }
  
  .mock-chat-header span {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--color-ink-faint);
  }
  
  .bubble {
    max-width: 80%;
    padding: 10px 13px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.45;
  }
  
  .bubble-user {
    align-self: flex-end;
    background: var(--color-accent);
    color: var(--color-accent-ink);
    border-bottom-right-radius: 4px;
  }
  
  .bubble-agent {
    align-self: flex-start;
    background: var(--color-surface-alt);
    color: var(--color-ink);
    border-bottom-left-radius: 4px;
  }
  
  .mock-thinking {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-ink-faint);
    padding: 2px 4px;
  }
  
  .mock-thinking .kicker-dot {
    background: var(--color-ink-faint);
  }
  
  .mock-thinking .kicker-dot:nth-child(2) {
    animation-delay: 0.2s;
  }
  
  .mock-thinking .kicker-dot:nth-child(3) {
    animation-delay: 0.4s;
  }
  
  /* ---------- Section scaffolding ---------- */
  
  section {
    padding: 88px 0;
  }
  
  .section-alt {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }
  
  .section-head {
    max-width: 640px;
    margin: 0 0 48px;
  }
  
  .section-head h2 {
    font-size: clamp(1.7rem, 1.6vw + 1.1rem, 2.3rem);
    letter-spacing: -0.015em;
    margin: 14px 0 12px;
    font-weight: 700;
  }
  
  .section-head p {
    color: var(--color-ink-soft);
    font-size: 1.05rem;
    margin: 0;
  }
  
  .section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }
  
  /* ---------- How it works ---------- */
  
  .steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  
  .step {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 26px 22px;
    position: relative;
  }
  
  .step-number {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-soft);
    width: 32px;
    height: 32px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
  }
  
  .step h3 {
    font-size: 1.02rem;
    margin: 0 0 8px;
    font-weight: 600;
  }
  
  .step p {
    font-size: 0.92rem;
    color: var(--color-ink-soft);
    margin: 0;
  }
  
  /* ---------- Who it's for ---------- */
  
  .audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  
  .audience-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    box-shadow: var(--shadow-card);
  }
  
  .audience-card svg {
    width: 22px;
    height: 22px;
    color: var(--color-data);
    margin-bottom: 16px;
  }
  
  .audience-card h3 {
    font-size: 1.05rem;
    margin: 0 0 10px;
    font-weight: 600;
  }
  
  .audience-card p {
    font-size: 0.93rem;
    color: var(--color-ink-soft);
    margin: 0;
  }
  
  /* ---------- Feature cards ---------- */
  
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  
  .feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 26px 22px;
    transition: box-shadow 180ms ease, transform 180ms ease;
  }
  
  .feature-card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
  }
  
  .feature-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
  }
  
  .feature-icon svg {
    width: 19px;
    height: 19px;
  }
  
  .feature-card h3 {
    font-size: 1rem;
    margin: 0 0 8px;
    font-weight: 600;
  }
  
  .feature-card p {
    font-size: 0.92rem;
    color: var(--color-ink-soft);
    margin: 0;
  }
  
  /* ---------- CTA band ---------- */
  
  .cta-band {
    background: var(--color-ink);
    color: var(--color-bg);
    border-radius: var(--radius-lg);
    margin: 0 auto;
    max-width: var(--container);
    padding: 56px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
  
  .cta-band h2 {
    font-size: 1.7rem;
    margin: 0 0 8px;
    letter-spacing: -0.01em;
  }
  
  .cta-band p {
    margin: 0;
    color: color-mix(in srgb, var(--color-bg) 65%, transparent);
    max-width: 44ch;
  }
  
  .cta-band .btn-primary {
    background: var(--color-accent);
  }
  
  .cta-band-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
  }
  
  /* ---------- Footer ---------- */
  
  .site-footer {
    padding: 48px 0 40px;
  }
  
  .footer-grid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
  }
  
  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  .footer-brand .brand-logo {
    height: 16px;
    background-color: var(--color-ink-faint);
  }
  
  .footer-links {
    display: flex;
    gap: 24px;
    font-size: 13.5px;
    color: var(--color-ink-soft);
  }
  
  .footer-links a {
    text-decoration: none;
    color: var(--color-ink-soft);
  }
  
  .footer-links a:hover {
    color: var(--color-ink);
  }
  
  .footer-meta {
    font-size: 12.5px;
    color: var(--color-ink-faint);
    font-family: var(--font-mono);
  }
  
  /* ---------- Responsive ---------- */
  
  @media (max-width: 980px) {
    .hero-grid {
      grid-template-columns: 1fr;
    }
    .mock-shell {
      max-width: 480px;
    }
    .steps,
    .feature-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .audience-grid {
      grid-template-columns: 1fr;
    }
    .cta-band {
      flex-direction: column;
      align-items: flex-start;
    }
  }
  
  @media (max-width: 760px) {
    .site-nav {
      display: none;
    }
    .nav-toggle {
      display: flex;
    }
    section {
      padding: 64px 0;
    }
    .hero {
      padding: 48px 0 64px;
    }
    .cta-band {
      padding: 40px 28px;
      border-radius: var(--radius-card);
    }
  }
  
  @media (max-width: 620px) {
    .steps,
    .feature-grid {
      grid-template-columns: 1fr;
    }
    .mock-shell {
      grid-template-columns: 110px 1fr;
    }
    .header-actions {
      gap: 8px;
    }
    .lang-switch {
      display: none;
    }
    .btn-sm {
      padding: 7px 11px;
    }
    .footer-grid {
      flex-direction: column;
      align-items: flex-start;
    }
  }
  
  @media (max-width: 400px) {
    .container {
      padding: 0 16px;
    }
    .btn-sm {
      padding: 7px 9px;
      font-size: 12.5px;
    }
    .login-group {
      gap: 6px;
    }
  }
  
  /* ---------- Mobile nav drawer ---------- */
  
  .mobile-nav {
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 10px 24px 18px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
  }
  
  .mobile-nav.open {
    display: flex;
  }
  
  .mobile-nav a {
    padding: 10px 6px;
    text-decoration: none;
    color: var(--color-ink-soft);
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
  }
  
  .mobile-nav a:hover {
    background: var(--color-surface-alt);
    color: var(--color-ink);
  }
  
  .mobile-nav .lang-switch {
    display: flex;
    margin-top: 8px;
    padding-top: 10px;
    border-top: 1px solid var(--color-border);
  }