/* ========================================
   BuildFlow Group - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  /* Colors - BuildFlow Brand */
  /* Primary */
  --color-navy: #1F2C40;
  --color-graphite: #394B5A;
  --color-cloud: #F8F9FA;
  /* Secondary */
  --color-mist: #E6E9ED;
  --color-teal: #3BAEA0;
  --color-teal-hover: #2f9a8d;
  --color-sand: #D9CBBF;
  
  /* Semantic mappings */
  --color-ink: var(--color-navy);
  --color-ink-light: var(--color-graphite);
  --color-ink-muted: #6b7a8a;
  --color-cream: var(--color-cloud);
  --color-cream-dark: var(--color-mist);
  --color-white: #ffffff;
  --color-accent: var(--color-teal);
  --color-accent-hover: var(--color-teal-hover);
  --color-accent-light: #e0f4f2;
  
  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 10rem;
  
  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 720px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  --transition-slow: 0.6s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 600;
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

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

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

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

.container--narrow {
  max-width: var(--max-width-narrow);
}

.text-muted {
  color: var(--color-ink-muted);
}

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

.text-center {
  text-align: center;
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ========================================
   Header & Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(248, 249, 250, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(31, 44, 64, 0.08);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.header--hidden {
  transform: translateY(-100%);
}

.header--scrolled {
  box-shadow: 0 4px 20px rgba(31, 44, 64, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
}

.logo__image {
  height: auto;
  width: 140px;
}

@media (min-width: 768px) {
  .logo__image {
    width: 220px;
  }
}

@media (min-width: 1024px) {
  .logo__image {
    width: 280px;
  }
}

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

.nav__list {
  display: none;
  list-style: none;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .nav__list {
    display: flex;
  }
}

.nav__link {
  font-size: 0.9375rem;
  color: var(--color-ink-light);
  text-decoration: none;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

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

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

/* Mobile Menu Toggle */
.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  background: none;
  border: none;
  cursor: pointer;
}

@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }
}

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

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

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

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

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-cream);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.mobile-menu--active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__list {
  list-style: none;
  text-align: center;
}

.mobile-menu__link {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-ink);
  padding: var(--space-sm) var(--space-lg);
  transition: color var(--transition-fast);
}

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

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 174, 160, 0.3);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
}

.btn--secondary:hover {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.btn--large {
  padding: 1.25rem 2.5rem;
  font-size: 1rem;
}

.btn__arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-3xl) 0 var(--space-2xl);
  background-color: var(--color-cream);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse at center, rgba(59, 174, 160, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.hero__title {
  margin-bottom: var(--space-md);
  font-size: 3.25rem;
}

.hero__title span {
  display: block;
  white-space: nowrap;
}

.hero__title .highlight {
  color: var(--color-accent);
  display: inline;
}

/* Hero title responsive sizing */
@media (max-width: 1100px) {
  .hero__title {
    font-size: 2.75rem;
  }
}

@media (max-width: 900px) {
  .hero__title {
    font-size: 2.25rem;
  }
}

@media (max-width: 700px) {
  .hero__title {
    font-size: 1.85rem;
  }
}

@media (max-width: 500px) {
  .hero__title {
    font-size: 1.5rem;
  }
  
  .hero__title span {
    white-space: normal;
  }
}

.hero__description {
  font-size: 1.25rem;
  color: var(--color-ink-light);
  max-width: 540px;
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Decorative Element */
.hero__decoration {
  position: absolute;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 200px;
  height: 200px;
  border: 1px solid rgba(31, 44, 64, 0.1);
  border-radius: 50%;
  display: none;
}

@media (min-width: 1024px) {
  .hero__decoration {
    display: block;
  }
}

.hero__decoration::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 60%;
  height: 60%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(59, 174, 160, 0.2);
  border-radius: 50%;
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: var(--space-2xl) 0;
}

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

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

.section--dark {
  background-color: var(--color-ink);
  color: var(--color-cream);
}

.section--dark .text-muted {
  color: rgba(248, 249, 250, 0.7);
}

.section__header {
  margin-bottom: var(--space-xl);
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-weight: 500;
}

.section__title {
  margin-bottom: var(--space-md);
}

.section__lead {
  font-size: 1.25rem;
  color: var(--color-ink-light);
  max-width: 600px;
}

/* ========================================
   Content Grid
   ======================================== */
.content-grid {
  display: grid;
  gap: var(--space-xl);
}

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

@media (min-width: 1024px) {
  .content-grid--three {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .content-grid--asymmetric {
    grid-template-columns: 1fr 1.5fr;
  }
}

/* ========================================
   Cards
   ======================================== */
.card {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--color-mist);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(31, 44, 64, 0.1);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 8px;
  margin-bottom: var(--space-md);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-ink-light);
  font-size: 1rem;
}

/* ========================================
   Feature List
   ======================================== */
.feature-list {
  list-style: none;
}

.feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-mist);
}

.feature-list__item:last-child {
  border-bottom: none;
}

.feature-list__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  margin-top: 2px;
}

.feature-list__text {
  font-size: 1.0625rem;
}

/* ========================================
   Quote / Highlight Block
   ======================================== */
.highlight-block {
  position: relative;
  padding: var(--space-lg);
  padding-left: var(--space-xl);
  background-color: var(--color-accent-light);
  border-radius: 8px;
}

.highlight-block::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--color-accent);
  border-radius: 4px 0 0 4px;
}

.highlight-block__text {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--color-ink);
  line-height: 1.6;
}

/* ========================================
   Problem/Solution Section
   ======================================== */
.problem-solution {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .problem-solution {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

.problem-box,
.solution-box {
  padding: var(--space-lg);
  border-radius: 8px;
}

.problem-box {
  background-color: rgba(217, 203, 191, 0.3);
  border: 1px solid rgba(217, 203, 191, 0.5);
}

.solution-box {
  background-color: var(--color-accent-light);
  border: 1px solid rgba(59, 174, 160, 0.2);
}

.problem-box__title,
.solution-box__title {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.problem-box__title {
  color: var(--color-graphite);
}

.solution-box__title {
  color: var(--color-accent);
}

.problem-box__list,
.solution-box__list {
  list-style: none;
}

.problem-box__item,
.solution-box__item {
  padding: var(--space-xs) 0;
  padding-left: var(--space-md);
  position: relative;
  color: var(--color-ink-light);
}

.problem-box__item::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-graphite);
}

.solution-box__item::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  text-align: center;
  padding: var(--space-2xl) 0;
}

.cta-section__title {
  margin-bottom: var(--space-sm);
}

.cta-section__text {
  font-size: 1.125rem;
  color: var(--color-ink-light);
  margin-bottom: var(--space-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   Story Page - Timeline
   ======================================== */
.timeline {
  position: relative;
  padding-left: var(--space-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-graphite));
}

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

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

.timeline__marker {
  position: absolute;
  left: calc(-1 * var(--space-xl) - 5px);
  top: 8px;
  width: 12px;
  height: 12px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-cream);
}

.timeline__title {
  font-size: 1.375rem;
  margin-bottom: var(--space-sm);
}

.timeline__text {
  color: var(--color-ink-light);
}

/* ========================================
   Contact Form
   ======================================== */
.contact-section {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .contact-section {
    grid-template-columns: 1fr 1.25fr;
  }
}

.contact-info__title {
  margin-bottom: var(--space-md);
}

.contact-info__text {
  color: var(--color-ink-light);
  margin-bottom: var(--space-lg);
}

.contact-info__note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-accent-light);
  border-radius: 8px;
  font-size: 0.9375rem;
}

.contact-info__note-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.form {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--color-mist);
}

.form__group {
  margin-bottom: var(--space-md);
}

.form__label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-ink);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ink);
  background-color: var(--color-cream);
  border: 1px solid var(--color-mist);
  border-radius: 4px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 174, 160, 0.1);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-ink-muted);
}

.form__textarea {
  min-height: 120px;
  resize: vertical;
}

.form__submit {
  width: 100%;
  margin-top: var(--space-sm);
}

.form__success {
  display: none;
  text-align: center;
  padding: var(--space-xl);
}

.form__success.visible {
  display: block;
}

.form__success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.form__success-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.form__success-text {
  color: var(--color-ink-light);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background-color: var(--color-ink);
  color: var(--color-cream);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer__inner {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand {
  max-width: 320px;
}

.footer__logo {
  margin-bottom: var(--space-md);
}

.footer__logo-image {
  height: auto;
  width: 200px;
}

@media (min-width: 768px) {
  .footer__logo-image {
    width: 260px;
  }
}

.footer__tagline {
  font-size: 0.9375rem;
  color: rgba(248, 249, 250, 0.7);
}

.footer__nav-title {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(248, 249, 250, 0.5);
  margin-bottom: var(--space-md);
}

.footer__nav-list {
  list-style: none;
}

.footer__nav-link {
  display: block;
  color: rgba(248, 249, 250, 0.8);
  padding: var(--space-xs) 0;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-cream);
}

.footer__bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(248, 249, 250, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.footer__copyright {
  font-size: 0.875rem;
  color: rgba(248, 249, 250, 0.5);
}

.footer__legal {
  display: flex;
  gap: var(--space-md);
}

.footer__legal-link {
  font-size: 0.875rem;
  color: rgba(248, 249, 250, 0.5);
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--color-cream);
}

/* ========================================
   Page-Specific Styles
   ======================================== */

/* Story Page Hero */
.page-hero {
  padding: calc(var(--space-3xl) + 60px) 0 var(--space-2xl);
  background-color: var(--color-cream);
}

.page-hero__eyebrow {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-weight: 500;
}

.page-hero__title {
  margin-bottom: var(--space-md);
}

.page-hero__lead {
  font-size: 1.25rem;
  color: var(--color-ink-light);
  max-width: 600px;
}

/* Director Section */
.director-section {
  display: grid;
  gap: var(--space-xl);
  align-items: start;
}

@media (min-width: 768px) {
  .director-section {
    grid-template-columns: 1fr 2fr;
  }
}

.director-image {
  aspect-ratio: 1;
  background-color: var(--color-cream-dark);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-muted);
  font-size: 0.875rem;
}

.director-content__quote {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

/* Values Grid */
.values-grid {
  display: grid;
  gap: var(--space-md);
}

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

@media (min-width: 1024px) {
  .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.value-item {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-white);
  border-radius: 8px;
  border: 1px solid var(--color-mist);
}

.value-item__word {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.value-item__description {
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 767px) {
  .section {
    padding: var(--space-xl) 0;
  }
  
  .hero {
    min-height: auto;
    padding: calc(var(--space-2xl) + 80px) 0 var(--space-xl);
  }
  
  .hero__description {
    font-size: 1.125rem;
  }
  
  .btn--large {
    padding: 1rem 2rem;
    font-size: 0.9375rem;
    width: 100%;
  }
  
  .highlight-block {
    padding: var(--space-md);
    padding-left: var(--space-lg);
  }
  
  .highlight-block__text {
    font-size: 1.125rem;
  }
  
  .timeline {
    padding-left: var(--space-lg);
  }
  
  .timeline__marker {
    left: calc(-1 * var(--space-lg) - 5px);
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .header,
  .footer,
  .btn,
  .mobile-menu {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
  
  .section {
    padding: 1cm 0;
  }
}