/* ==========================================================================
   Chris Kohlhardt - Personal Website
   Design: Warm/organic, earth tones + blue
   Typography: Lora (Google Fonts)
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-primary: #7ba4bd;
  --color-primary-dark: #5d8aa8;
  --color-cream: #FAF8F5;
  --color-cream-dark: #F0EDE8;
  --color-earth-brown: #5C4A3D;
  --color-slate-blue: #4A6B8A;
  --color-slate-blue-dark: #3A5570;
  --color-charcoal: #333333;
  --color-white: #FFFFFF;

  /* Typography */
  --font-family: 'Lora', Georgia, serif;
  --font-weight-regular: 400;
  --font-weight-bold: 700;

  /* Font Sizes */
  --text-xs: 0.875rem;
  --text-sm: 1rem;
  --text-base: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3.5rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

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

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-charcoal);
  background-color: var(--color-cream);
}

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

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

a:hover {
  color: var(--color-slate-blue-dark);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-charcoal);
}

h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

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

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

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

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

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

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

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

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-cream-dark);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header__logo {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-charcoal);
}

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

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

.nav__link {
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  padding: var(--space-xs) 0;
  position: relative;
}

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

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

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-charcoal);
  margin: 5px 0;
  transition: var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero--with-image {
  min-height: 70vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}

.hero--with-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(123, 164, 189, 0.55) 0%,
    rgba(123, 164, 189, 0.3) 50%,
    rgba(123, 164, 189, 0.1) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

.hero__tagline {
  font-size: var(--text-xl);
  opacity: 0.95;
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.hero__tagline strong {
  font-weight: var(--font-weight-bold);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-regular);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

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

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

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

.btn--white:hover {
  background-color: var(--color-cream);
  border-color: var(--color-cream);
  color: var(--color-primary);
}

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

.card-grid--centered {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
}

.card-grid--centered .card {
  flex: 0 1 350px;
  max-width: 400px;
}

.card {
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-cream-dark);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.card:hover .card__image img {
  transform: scale(1.05);
}

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

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

.card__text {
  color: var(--color-earth-brown);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
}

.card__link {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

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

.card__link::after {
  content: '\2192';
  transition: transform var(--transition-fast);
}

.card__link:hover::after {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--color-earth-brown);
  font-size: var(--text-lg);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-charcoal);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
}

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

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  display: block;
}

.footer__tagline {
  font-size: var(--text-sm);
  opacity: 0.8;
  line-height: 1.6;
}

.footer__nav {
  display: flex;
  gap: var(--space-xl);
}

.footer__nav-group h4 {
  font-size: var(--text-sm);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

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

.footer__nav-group li {
  margin-bottom: var(--space-xs);
}

.footer__nav-group a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
}

.footer__nav-group a:hover {
  color: var(--color-white);
}

.footer__bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--text-xs);
  opacity: 0.6;
}

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

.footer__social a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-lg);
}

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

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 968px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__inner {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  :root {
    --text-4xl: 2.5rem;
    --text-3xl: 2rem;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-cream-dark);
    gap: var(--space-sm);
  }

  .nav--open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

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

  .hero {
    padding: var(--space-2xl) 0;
  }

  .hero--with-image {
    min-height: 60vh;
  }

  .footer__nav {
    flex-direction: column;
    gap: var(--space-lg);
  }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-center {
  text-align: center;
}

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

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* --------------------------------------------------------------------------
   Page Header (Interior Pages)
   -------------------------------------------------------------------------- */
.page-header {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.page-header__subtitle {
  font-size: var(--text-lg);
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Organization List (Philanthropy Page)
   -------------------------------------------------------------------------- */
.org-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-sm);
  max-width: 900px;
  margin: 0 auto;
}

.org-list__item {
  background-color: var(--color-white);
  padding: var(--space-md) var(--space-lg);
  border-radius: 4px;
  border-left: 3px solid var(--color-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.org-list__item:hover {
  transform: translateX(4px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* --------------------------------------------------------------------------
   Logo Grid (Philanthropy Page)
   -------------------------------------------------------------------------- */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-xl);
  align-items: center;
  justify-items: center;
}

.logo-grid__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 120px;
}

.logo-grid__item:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.logo-grid__item img {
  max-width: 160px;
  max-height: 90px;
  width: auto;
  height: auto;
  object-fit: contain;
}

@media (max-width: 768px) {
  .logo-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-md);
  }

  .logo-grid__item img {
    max-width: 110px;
    max-height: 75px;
  }
}

/* --------------------------------------------------------------------------
   About Page Layout
   -------------------------------------------------------------------------- */
.about-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about-layout__image {
  position: sticky;
  top: calc(80px + var(--space-lg));
}

.about-photo-placeholder {
  aspect-ratio: 1;
  background-color: var(--color-cream-dark);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-earth-brown);
  font-size: var(--text-sm);
}

.about-photo {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.about-layout__content h1 {
  margin-bottom: var(--space-lg);
}

.about-layout__content h2 {
  font-size: var(--text-xl);
}

.contact-links {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

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

  .about-layout__image {
    position: static;
    max-width: 250px;
    margin: 0 auto;
  }
}