/* ========================================
   HAULIV — Styles
   Mobile-first responsive design
   ======================================== */

/* --- Custom Properties --- */
:root {
  --color-primary: #1a3a5c;
  --color-accent: #e88c2a;
  --color-white: #ffffff;
  --color-light: #f5f7fa;
  --color-dark: #1a1a2e;
  --color-gray: #6b7280;
  --color-border: #e5e7eb;

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-size-sm: clamp(0.875rem, 0.85rem + 0.15vw, 0.9375rem);
  --font-size-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --font-size-xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --font-size-2xl: clamp(2rem, 1.5rem + 2.5vw, 3.25rem);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.05);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-dark);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul[role="list"] {
  list-style: none;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

.section--alt {
  background: var(--color-light);
}

.section__title {
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  min-height: 44px;
  min-width: 44px;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background: #d47b1f;
}

.btn--large {
  padding: 1.125rem 2.5rem;
  font-size: var(--font-size-lg);
}

/* ========================================
   NAVIGATION
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xs);
  padding-bottom: var(--space-xs);
  min-height: 70px;
}

.nav__logo img {
  width: 120px;
  height: auto;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__menu {
  list-style: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: var(--space-lg);
  gap: var(--space-md);
  transform: translateX(100%);
  transition: transform var(--transition);
  z-index: 999;
}

.nav__menu.is-open {
  transform: translateX(0);
}

.nav__link {
  font-weight: 500;
  font-size: var(--font-size-lg);
  padding: var(--space-xs) var(--space-sm);
  transition: color var(--transition);
}

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

.nav__cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
}

.nav__cta:hover {
  background: #d47b1f;
  color: var(--color-white);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 58, 92, 0.85) 0%, rgba(26, 26, 46, 0.7) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-xl) 0;
  color: var(--color-white);
}

.hero__content h1 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-md);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero__sub {
  font-size: var(--font-size-lg);
  max-width: 650px;
  margin: 0 auto var(--space-lg);
  opacity: 0.95;
  line-height: 1.7;
}

/* ========================================
   MISSION
   ======================================== */
.mission__grid {
  display: grid;
  gap: var(--space-lg);
}

.mission__image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.mission__content h2 {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.mission__intro {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  margin-bottom: var(--space-md);
}

.mission__cards {
  display: grid;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.mission__card {
  background: var(--color-light);
  border-radius: var(--radius);
  padding: var(--space-md);
  border-left: 4px solid var(--color-accent);
}

.mission__card-icon {
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.mission__card h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.mission__card p {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

.mission__bridge {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  padding: var(--space-md);
  background: var(--color-light);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
}

/* ========================================
   BUSINESS MODEL
   ======================================== */
.business__row {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  align-items: center;
}

.business__image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.business__content h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.business__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.business__list li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: var(--space-sm);
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.section--alt .business__list li {
  background: var(--color-white);
}

.business__list li strong {
  color: var(--color-primary);
  font-weight: 600;
}

.business__list li span {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

/* ========================================
   FOUNDING PARTNERS
   ======================================== */
.partners {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0f2440 100%);
  color: var(--color-white);
  text-align: center;
}

.partners__title {
  font-size: var(--font-size-xl);
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.partners__intro {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--space-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.partners__types {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.partners__type {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: var(--space-md);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.partners__count {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-accent);
}

.partners__label {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.partners__benefits {
  display: grid;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.partners__benefit {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: var(--space-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.partners__benefit h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.partners__benefit p {
  font-size: var(--font-size-sm);
  opacity: 0.85;
}

/* ========================================
   TEAM
   ======================================== */
.team__content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.team__content p {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.team__content strong {
  color: var(--color-primary);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer__grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer__brand img {
  width: 100px;
  height: auto;
  margin-bottom: var(--space-sm);
}

.footer__brand p {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  max-width: 300px;
}

.footer__cta h2,
.footer__links h2 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.footer__cta p {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  margin-bottom: var(--space-sm);
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__links a {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  transition: opacity var(--transition);
}

.footer__links a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  text-align: center;
}

.footer__bottom p {
  font-size: var(--font-size-sm);
  opacity: 0.5;
}

/* ========================================
   RESPONSIVE — Tablet (768px+)
   ======================================== */
@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    flex-direction: row;
    transform: none;
    padding: 0;
    gap: var(--space-sm);
    background: none;
  }

  .nav__link {
    font-size: var(--font-size-sm);
  }

  .mission__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

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

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

  .business__row--reverse {
    direction: rtl;
  }

  .business__row--reverse > * {
    direction: ltr;
  }

  .partners__types {
    grid-template-columns: repeat(4, 1fr);
    max-width: 800px;
  }

  .partners__benefits {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* ========================================
   RESPONSIVE — Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
  .section {
    padding: var(--space-2xl) 0;
  }

  .nav__link {
    font-size: var(--font-size-base);
  }

  .hero {
    min-height: 85vh;
  }
}