/* =========================================================================
   Design Tokens
   ========================================================================= */

:root {
  /* Colour — brand */
  --color-primary: #800020;
  --color-primary-hover: #570013;
  --color-primary-fixed: #ffdada;
  --color-primary-fixed-dim: #ffb3b5;
  --color-on-primary: #ffffff;
  --color-on-primary-container: #ff828a;

  /* Colour — surfaces & text */
  --color-background: #f9f9ff;
  --color-on-background: #151c27;
  --color-surface: #f9f9ff;
  --color-on-surface: #151c27;
  --color-surface-variant: #dce2f3;
  --color-on-surface-variant: #584141;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f0f3ff;
  --color-surface-container: #e7eefe;
  --color-surface-container-high: #e2e8f8;
  --color-surface-container-highest: #dce2f3;
  --color-inverse-surface: #2a313d;
  --color-inverse-on-surface: #ebf1ff;

  /* Colour — outlines & borders */
  --color-outline: #8c7071;
  --color-outline-variant: #e0bfbf;

  /* Colour — state */
  --color-error: #ba1a1a;
  --color-on-error: #ffffff;

  /* Colour — neutrals (used by footer zinc greys) */
  --color-neutral-50: #fafafa;
  --color-neutral-200: #e4e4e7;
  --color-neutral-500: #71717a;
  --color-neutral-800: #27272a;
  --color-neutral-900: #18181b;

  /* Typography — families */
  --font-heading: 'Manrope', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Typography — scale (size / line-height / weight / letter-spacing) */
  --font-size-display-lg: 3rem;       /* 48px */
  --line-height-display-lg: 3.5rem;   /* 56px */
  --letter-spacing-display-lg: -0.02em;

  --font-size-headline-lg: 2rem;      /* 32px */
  --line-height-headline-lg: 2.5rem;  /* 40px */

  --font-size-headline-md: 1.5rem;    /* 24px */
  --line-height-headline-md: 2rem;    /* 32px */

  --font-size-body-lg: 1.125rem;      /* 18px */
  --line-height-body-lg: 1.75rem;     /* 28px */

  --font-size-body-md: 1rem;          /* 16px */
  --line-height-body-md: 1.5rem;      /* 24px */

  --font-size-label-md: 0.875rem;     /* 14px */
  --line-height-label-md: 1.25rem;    /* 20px */
  --letter-spacing-label-md: 0.01em;

  --font-size-label-sm: 0.75rem;      /* 12px */
  --line-height-label-sm: 1rem;       /* 16px */
  --letter-spacing-label-sm: 0.05em;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 6rem;     /* 96px */
  --space-margin: 2rem;  /* 32px */
  --space-gutter: 1.5rem;/* 24px */

  /* Layout */
  --container-max: 80rem; /* 1280px */

  /* Radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.25rem;
  --radius-lg: 0.5rem;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px -5px rgba(26, 28, 30, 0.08);
  --shadow-lg: 0 20px 40px -10px rgba(26, 28, 30, 0.12);
  --shadow-header: 0 1px 2px rgba(0, 0, 0, 0.04);

  /* Effects */
  --header-height: 4rem;
  --header-bg: rgba(255, 255, 255, 0.95);
  --overlay-primary: rgba(128, 0, 32, 0.2);
}

/* =========================================================================
   Dark mode — auto via system preference
   ========================================================================= */

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #ffb3b5;
    --color-primary-hover: #ff828a;
    --color-on-primary: #40000b;

    --color-background: #18181b;
    --color-on-background: #fafafa;
    --color-surface: #18181b;
    --color-on-surface: #fafafa;
    --color-surface-variant: #27272a;
    --color-on-surface-variant: #a1a1aa;
    --color-surface-container-lowest: #0a0a0a;
    --color-surface-container-low: #18181b;
    --color-surface-container: #27272a;
    --color-surface-container-high: #3f3f46;
    --color-surface-container-highest: #52525b;

    --color-outline: #8c7071;
    --color-outline-variant: #3f3f46;

    --header-bg: rgba(24, 24, 27, 0.92);
    --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
    --overlay-primary: rgba(255, 179, 181, 0.22);
  }
}

/* =========================================================================
   Base / Reset
   ========================================================================= */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body-md);
  color: var(--color-on-surface);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  margin: 0;
  color: var(--color-on-surface);
}

p {
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.material-symbols-outlined {
  font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}

main {
  padding-top: var(--header-height);
}

/* =========================================================================
   Layout primitives
   ========================================================================= */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-margin);
  padding-right: var(--space-margin);
}

/* =========================================================================
   Shared button
   ========================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-label-md);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-md) var(--space-xl);
}

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

.btn--sm {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-label-sm);
}

/* =========================================================================
   Site header
   ========================================================================= */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-outline-variant);
  box-shadow: var(--shadow-header);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-lg);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-header__brand:hover {
  color: var(--color-primary-hover);
}

.site-header__logo {
  display: block;
  height: 2rem;
  width: auto;
}

.site-header__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav__link {
  font-family: var(--font-body);
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-on-surface);
  text-decoration: none;
  padding: var(--space-sm) 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.site-header__cta {
  flex-shrink: 0;
}

/* =========================================================================
   Site footer
   ========================================================================= */

.site-footer {
  background-color: var(--color-surface-container-low);
  border-top: 1px solid var(--color-outline-variant);
  padding: var(--space-xl) 0;
  margin-top: var(--space-3xl);
}

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

.site-footer__copy {
  font-family: var(--font-heading);
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
}

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

.site-footer__link {
  font-family: var(--font-heading);
  font-size: var(--font-size-label-md);
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-primary);
  text-underline-offset: 4px;
}

.site-footer__link:hover {
  color: var(--color-on-surface-variant);
}

/* =========================================================================
   Shared section label
   ========================================================================= */

.section-label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--font-size-label-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-label-sm);
  letter-spacing: var(--letter-spacing-label-sm);
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

/* =========================================================================
   Hero
   ========================================================================= */

.hero {
  padding: var(--space-3xl) 0;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero__headline {
  font-size: var(--font-size-display-lg);
  line-height: var(--line-height-display-lg);
  letter-spacing: var(--letter-spacing-display-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.hero__body {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body-lg);
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-xl);
}

.hero__cta {
  font-size: var(--font-size-body-md);
}

.hero__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__image {
  width: 100%;
  height: 37.5rem;
  object-fit: cover;
}

/* =========================================================================
   Pain points
   ========================================================================= */

.pain-points {
  background-color: var(--color-surface-container-low);
  padding: var(--space-3xl) 0;
}

.pain-points__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.pain-points__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.pain-points__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--overlay-primary);
  mix-blend-mode: multiply;
  pointer-events: none;
}

.pain-points__image {
  width: 100%;
  height: 31.25rem;
  object-fit: cover;
  filter: grayscale(1);
  opacity: 0.9;
}

.pain-points__headline {
  font-size: var(--font-size-headline-lg);
  line-height: var(--line-height-headline-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
  margin-bottom: var(--space-xl);
}

.pain-points__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.pain-point {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.pain-point__icon {
  color: var(--color-error);
  flex-shrink: 0;
  font-size: 1.75rem;
}

.pain-point__text {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body-lg);
  color: var(--color-on-surface);
}

.pain-point__text strong {
  font-weight: var(--font-weight-bold);
  color: var(--color-on-surface);
}

/* =========================================================================
   Core values
   ========================================================================= */

.core-values {
  padding: var(--space-3xl) 0;
}

.core-values__header {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto var(--space-2xl);
}

.core-values__headline {
  font-size: var(--font-size-headline-lg);
  line-height: var(--line-height-headline-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
  margin-bottom: var(--space-md);
}

.core-values__intro {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body-lg);
  color: var(--color-on-surface-variant);
}

.core-values__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.value-card {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.value-card__icon {
  color: var(--color-primary);
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.value-card__title {
  font-size: var(--font-size-headline-md);
  line-height: var(--line-height-headline-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
  margin-bottom: var(--space-sm);
}

.value-card__body {
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body-md);
  color: var(--color-on-surface-variant);
}

/* =========================================================================
   Services
   ========================================================================= */

.services {
  background-color: var(--color-surface-container-low);
  padding: var(--space-3xl) 0;
}

.services__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.services__headline {
  font-size: var(--font-size-headline-lg);
  line-height: var(--line-height-headline-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
}

.services__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
}

.service {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.service--reverse .service__content {
  order: 2;
}

.service--reverse .service__media {
  order: 1;
}

.service__title {
  font-size: var(--font-size-headline-md);
  line-height: var(--line-height-headline-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
  margin-bottom: var(--space-md);
}

.service__body {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body-lg);
  color: var(--color-on-surface-variant);
}

.service__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.service__image {
  width: 100%;
  height: 25rem;
  object-fit: cover;
}

/* =========================================================================
   About
   ========================================================================= */

.about {
  padding: var(--space-3xl) 0;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about__image {
  width: 100%;
  height: 37.5rem;
  object-fit: cover;
}

.about__name {
  font-size: var(--font-size-display-lg);
  line-height: var(--line-height-display-lg);
  letter-spacing: var(--letter-spacing-display-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.about__paragraph {
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body-lg);
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-md);
}

.about__paragraph:last-child {
  margin-bottom: 0;
}

/* =========================================================================
   Testimonials
   ========================================================================= */

.testimonials {
  background-color: var(--color-surface-container-low);
  padding: var(--space-3xl) 0;
}

.testimonials__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.testimonials__headline {
  font-size: var(--font-size-headline-lg);
  line-height: var(--line-height-headline-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.testimonial {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  margin: 0;
}

.testimonial__avatar {
  width: 5rem;
  height: 5rem;
  border-radius: var(--radius-full);
  object-fit: cover;
  margin-bottom: var(--space-md);
}

.testimonial__quote {
  font-family: var(--font-body);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body-lg);
  font-style: italic;
  color: var(--color-on-surface-variant);
  margin: 0 0 var(--space-md);
}

.testimonial__attribution {
  font-family: var(--font-heading);
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-surface);
}

.testimonial__role {
  font-weight: var(--font-weight-regular);
  color: var(--color-on-surface-variant);
}

/* =========================================================================
   Mobile nav — hamburger button and dropdown panel (hidden on desktop)
   ========================================================================= */

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
}

.nav-toggle__bar {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-on-surface);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-outline-variant);
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-margin);
}

.mobile-menu__link {
  display: block;
  font-family: var(--font-body);
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-on-surface);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-outline-variant);
}

.mobile-menu__link:hover {
  color: var(--color-primary);
}

.mobile-menu__link--active {
  color: var(--color-primary);
}

.mobile-menu__cta {
  justify-content: center;
  width: 100%;
  margin-top: var(--space-md);
  padding: var(--space-md) var(--space-xl);
}

/* =========================================================================
   Responsive — tablet (<= 1023px)
   ========================================================================= */

@media (max-width: 1023px) {
  :root {
    --space-3xl: 4rem;
    --space-2xl: 3rem;
    --font-size-display-lg: 2.5rem;
    --line-height-display-lg: 3rem;
  }

  .core-values__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__image,
  .about__image {
    height: 28rem;
  }

  .pain-points__image {
    height: 24rem;
  }

  .service__image {
    height: 20rem;
  }
}

/* =========================================================================
   Responsive — mobile (<= 767px)
   ========================================================================= */

@media (max-width: 767px) {
  :root {
    --space-3xl: 3rem;
    --space-2xl: 2rem;
    --space-xl: 2rem;
    --space-margin: 1rem;
    --font-size-display-lg: 2.25rem;
    --line-height-display-lg: 2.625rem;
    --font-size-headline-lg: 1.625rem;
    --line-height-headline-lg: 2.125rem;
    --font-size-headline-md: 1.25rem;
    --line-height-headline-md: 1.75rem;
    --font-size-body-lg: 1rem;
    --line-height-body-lg: 1.625rem;
  }

  /* Header — hide desktop nav + CTA, show hamburger */
  .site-header__nav,
  .site-header__cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .mobile-menu.is-open {
    display: block;
  }

  .site-header__brand-text {
    font-size: var(--font-size-body-md);
  }

  /* Hero — stack */
  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero__image {
    height: 18rem;
  }

  /* Pain points — stack */
  .pain-points__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .pain-points__image {
    height: 16rem;
  }

  /* Core values — single column */
  .core-values__grid {
    grid-template-columns: 1fr;
  }

  .value-card {
    padding: var(--space-lg);
  }

  /* Services — stack and reset reverse order so content is always above image */
  .service {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .service--reverse .service__content,
  .service--reverse .service__media {
    order: initial;
  }

  .service__image {
    height: 16rem;
  }

  /* About — stack */
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .about__image {
    height: 22rem;
  }

  /* Testimonials — single column */
  .testimonials__grid {
    grid-template-columns: 1fr;
  }

  /* Footer — stack */
  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  /* Primary button — slightly tighter on mobile */
  .btn--primary {
    padding: var(--space-md) var(--space-lg);
  }
}