/* ============================================================
   Branta Labs — styles.css
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

/* --- Custom Properties --- */

:root {
  --black: #0a0a0a;
  --black-soft: #1a1a1a;
  --black-mid: #2a2a2a;
  --white: #f5f5f0;
  --white-pure: #ffffff;
  --brown: #8b6914;
  --brown-light: #a67c00;
  --brown-muted: #c4a35a;
  --brown-subtle: rgba(139, 105, 20, 0.08);
  --gray: #6b6b6b;
  --gray-light: #e0e0dc;
  --gray-rule: #333333;

  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.5rem;
  --fs-xl: 2rem;
  --fs-2xl: 2.75rem;
  --fs-3xl: 3.5rem;
  --fs-4xl: 4.5rem;

  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  --spacing-2xl: 8rem;

  --max-width: 1200px;
  --nav-height: 87px;
  --nav-inline-padding: var(--spacing-sm);
  --nav-inner-padding-y: 0.125rem;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-weight: var(--fw-regular);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--white);
  background-color: var(--black);
}

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

a:hover {
  color: var(--brown-light);
}

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

ul, ol {
  list-style: none;
}

/* --- Utility --- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

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

.text-brown {
  color: var(--brown);
}

.text-gray {
  color: var(--gray);
}

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

.uppercase {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brown);
}

.rule {
  border: none;
  border-top: 1px solid var(--gray-rule);
  margin: var(--spacing-xl) 0;
}

/* --- Navigation --- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-rule);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: var(--nav-inline-padding);
  padding-block: var(--nav-inner-padding-y);
  box-sizing: border-box;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: clamp(1.05rem, 1.925vw, 2.1rem);
  font-weight: var(--fw-bold);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
}

.nav__logo-mark {
  display: block;
  flex-shrink: 0;
  height: 76px;
  width: calc(76px * 915 / 808 * 0.82);
  overflow: hidden;
}

.nav__logo picture {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
}

.nav__logo-mark .nav__logo-img {
  height: 76px;
  width: auto;
  max-width: none;
  object-fit: contain;
  display: block;
  transform: translateX(-22%);
}

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

.nav__link {
  font-size: 0.8125rem;
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--brown);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--white);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

/* --- Mobile Nav --- */

@media (max-width: 768px) {
  :root {
    --nav-height: 40px;
    --nav-inline-padding: var(--spacing-sm);
    --nav-inner-padding-y: 0.0625rem;
  }

  .nav__logo {
    font-size: clamp(0.875rem, 2vw, 1rem);
    gap: 0.2rem;
  }

  .nav__logo-mark {
    height: 22px;
    width: calc(22px * 915 / 808 * 0.82);
  }

  .nav__logo-mark .nav__logo-img {
    height: 22px;
    max-width: none;
    transform: translateX(-20%);
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-lg);
    background: var(--black);
    transform: translateX(100%);
    transition: transform var(--transition);
  }

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

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

  .nav__toggle {
    display: flex;
  }

  .nav__toggle--open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav__toggle--open span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle--open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* --- Hero --- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg svg {
  position: absolute;
  opacity: 0.04;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero__eyebrow {
  margin-bottom: var(--spacing-md);
}

.hero__title {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: var(--fs-lg);
  font-weight: var(--fw-light);
  color: var(--gray);
  line-height: 1.5;
  max-width: 600px;
  margin-bottom: var(--spacing-lg);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brown);
  border: 1px solid var(--brown);
  padding: 0.875rem 2rem;
  transition: all var(--transition);
}

.hero__cta:hover {
  background: var(--brown);
  color: var(--black);
}

.hero__cta svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.hero__cta:hover svg {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .hero__title {
    font-size: var(--fs-2xl);
  }

  .hero__subtitle {
    font-size: var(--fs-md);
  }
}

/* --- Section Headers --- */

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header__label {
  margin-bottom: var(--spacing-sm);
}

.section-header__title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 700px;
}

.section-header__description {
  font-size: var(--fs-md);
  color: var(--gray);
  max-width: 600px;
  margin-top: var(--spacing-sm);
  line-height: 1.6;
}

/* --- Cards Grid --- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

.card {
  background: var(--black-soft);
  border: 1px solid var(--gray-rule);
  padding: var(--spacing-lg);
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--brown);
  transform: translateY(-2px);
}

.card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--spacing-md);
  color: var(--brown);
}

.card__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

.card__text {
  font-size: var(--fs-sm);
  color: var(--gray);
  line-height: 1.7;
}

/* --- Values Grid --- */

.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--gray-rule);
  border: 1px solid var(--gray-rule);
}

.value {
  background: var(--black);
  padding: var(--spacing-lg);
  text-align: center;
}

.value__word {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--white);
}

.value__line {
  width: 24px;
  height: 1px;
  background: var(--brown);
  margin: var(--spacing-sm) auto;
}

.value__desc {
  font-size: var(--fs-xs);
  color: var(--gray);
}

@media (max-width: 768px) {
  .values {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .values {
    grid-template-columns: 1fr;
  }
}

/* --- About Page --- */

.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.about-intro__text {
  font-size: var(--fs-md);
  color: var(--gray);
  line-height: 1.8;
}

.about-intro__text p + p {
  margin-top: var(--spacing-md);
}

.about-intro__aside {
  border-left: 1px solid var(--gray-rule);
  padding-left: var(--spacing-lg);
}

.about-intro__aside .label {
  margin-bottom: var(--spacing-sm);
}

.stat {
  margin-bottom: var(--spacing-lg);
}

.stat__value {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--brown);
  letter-spacing: -0.02em;
}

.stat__label {
  font-size: var(--fs-sm);
  color: var(--gray);
  margin-top: 0.25rem;
}

@media (max-width: 768px) {
  .about-intro {
    grid-template-columns: 1fr;
  }

  .about-intro__aside {
    border-left: none;
    border-top: 1px solid var(--gray-rule);
    padding-left: 0;
    padding-top: var(--spacing-lg);
  }
}

/* --- Timeline --- */

.timeline {
  position: relative;
  padding-left: var(--spacing-lg);
  border-left: 1px solid var(--gray-rule);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--spacing-xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-lg) - 4px);
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--brown);
  border-radius: 50%;
}

.timeline__year {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brown);
  margin-bottom: 0.5rem;
}

.timeline__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: 0.5rem;
}

.timeline__text {
  font-size: var(--fs-sm);
  color: var(--gray);
  line-height: 1.7;
}

/* --- Contact --- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-info__item {
  margin-bottom: var(--spacing-lg);
}

.contact-info__label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brown);
  margin-bottom: 0.5rem;
}

.contact-info__value {
  font-size: var(--fs-md);
  color: var(--white);
}

.contact-info__value a:hover {
  color: var(--brown-light);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gray);
}

.form-group input,
.form-group textarea {
  background: var(--black-soft);
  border: 1px solid var(--gray-rule);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  padding: 0.875rem 1rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--brown);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.875rem 2rem;
  border: 1px solid var(--brown);
  background: transparent;
  color: var(--brown);
  cursor: pointer;
  transition: all var(--transition);
}

.btn:hover {
  background: var(--brown);
  color: var(--black);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Footer --- */

.footer {
  border-top: 1px solid var(--gray-rule);
  padding: var(--spacing-xl) 0;
}

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

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.footer__logo-mark {
  display: block;
  flex-shrink: 0;
  height: 132px;
  width: calc(132px * 915 / 808 * 0.82);
  overflow: hidden;
}

.footer__logo picture {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
}

.footer__logo-mark .footer__logo-img {
  height: 132px;
  width: auto;
  max-width: none;
  object-fit: contain;
  display: block;
  transform: translateX(-22%);
}

.footer__text {
  font-size: var(--fs-xs);
  color: var(--gray);
}

.footer__links {
  display: flex;
  gap: var(--spacing-md);
}

.footer__link {
  font-size: var(--fs-xs);
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer__link:hover {
  color: var(--white);
}

@media (max-width: 768px) {
  .footer__inner {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .footer__logo {
    font-size: var(--fs-xl);
    justify-content: center;
  }

  .footer__logo-mark {
    height: 56px;
    width: calc(56px * 915 / 808 * 0.82);
  }

  .footer__logo-mark .footer__logo-img {
    height: 56px;
    max-width: none;
    transform: translateX(-18%);
  }
}

/* --- Page Header (for inner pages) --- */

.page-header {
  padding-top: calc(var(--nav-height) + var(--spacing-2xl));
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-rule);
}

.page-header__title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.page-header__subtitle {
  font-size: var(--fs-md);
  color: var(--gray);
  margin-top: var(--spacing-sm);
  max-width: 600px;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .page-header__title {
    font-size: var(--fs-2xl);
  }
}

/* --- V-Formation Decorative Pattern --- */

.v-pattern {
  position: relative;
  overflow: hidden;
}

.v-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  right: -100px;
  width: 400px;
  height: 400px;
  background: linear-gradient(
    135deg,
    transparent 40%,
    rgba(139, 105, 20, 0.03) 40%,
    rgba(139, 105, 20, 0.03) 41%,
    transparent 41%,
    transparent 45%,
    rgba(139, 105, 20, 0.03) 45%,
    rgba(139, 105, 20, 0.03) 46%,
    transparent 46%,
    transparent 50%,
    rgba(139, 105, 20, 0.03) 50%,
    rgba(139, 105, 20, 0.03) 51%,
    transparent 51%
  );
  pointer-events: none;
}

/* --- Fade-in animation --- */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}