/* ==========================================================================
   V4 Design: "Modern & Minimalist"
   ========================================================================== */

/* -------------------------------------------------------------------------- */
/*                                  Variables                                 */
/* -------------------------------------------------------------------------- */

:root {
  /* Colors */
  --color-background: #FFFFFF;
  --color-subtle: #f5f5f5;
  --color-text: #1a1a1a;
  --color-accent: #005f73;
  --color-accent-light: #e0f7fa;
  --color-border: #eeeeee;
  --color-white: #FFFFFF;

  /* Typography */
  --font-family: 'Source Sans Pro', sans-serif;

  /* Type Scale */
  --text-sm: 0.875rem;
  --text-base: 1.125rem; /* 18px for better readability */
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --space-8: 6rem;

  /* Layout */
  --max-width: 1100px;
  --header-height: 80px;
  --border-radius: 4px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-4);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
  margin: 0 0 var(--space-4);
}
p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #004c5c; /* Darker accent */
}

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

ul, ol {
    margin: 0 0 var(--space-4);
    padding-left: var(--space-4);
}

/* -------------------------------------------------------------------------- */
/*                                  Layout                                    */
/* -------------------------------------------------------------------------- */

.container {
  width: 90%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding: var(--space-7) 0;
}

.section--subtle {
  background-color: var(--color-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.grid {
  display: grid;
  gap: var(--space-5);
}

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

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

.grid--4-cols {
  grid-template-columns: repeat(4, 1fr);
}

@media(max-width: 800px) {
  .grid--2-cols, .grid--3-cols, .grid--4-cols {
    grid-template-columns: 1fr;
  }
}

.text-center {
  text-align: center;
}
.section-header {
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--space-6);
    text-align: center;
}

.eyebrow {
    display: block;
    margin-bottom: var(--space-3);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-accent);
    letter-spacing: 1px;
}

/* -------------------------------------------------------------------------- */
/*                                  Header                                    */
/* -------------------------------------------------------------------------- */

.main-header {
  height: var(--header-height);
  background-color: var(--color-background);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.main-header.scrolled {
    border-bottom-color: var(--color-border);
}
.header__container {
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}
.main-nav__list {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav__link {
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  color: var(--color-text);
}
.main-nav__link--button {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius);
    transition: background-color 0.2s;
}
.main-nav__link--button:hover {
    background-color: #004c5c;
    color: var(--color-white);
}

/* -------------------------------------------------------------------------- */
/*                                    Hero                                    */
/* -------------------------------------------------------------------------- */

.hero {
  padding: var(--space-7) 0;
  text-align: center;
}
.hero__content {
    max-width: 800px;
    margin: 0 auto;
}
.hero__buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-5);
}

/* -------------------------------------------------------------------------- */
/*                                Components                                  */
/* -------------------------------------------------------------------------- */

.button {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-family);
    font-size: var(--text-sm);
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}
.button--primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}
.button--primary:hover {
    background-color: #004c5c;
    border-color: #004c5c;
    color: var(--color-white);
}
.button--secondary {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.button--secondary:hover {
    background-color: var(--color-accent-light);
}

.card {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-background);
    overflow: hidden;
    transition: border-color 0.2s;
}
.card:hover {
    border-color: var(--color-accent);
}
.card__image {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-bottom: 1px solid var(--color-border);
}
.card__content {
    padding: var(--space-5);
}
.card__title {
    font-size: var(--text-lg);
}

.video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}
.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* -------------------------------------------------------------------------- */
/*                                   Footer                                   */
/* -------------------------------------------------------------------------- */

.main-footer {
  padding: var(--space-6) 0;
  background-color: var(--color-subtle);
  border-top: 1px solid var(--color-border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
}
.footer-column h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-3);
}
.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-column li {
    margin-bottom: var(--space-2);
}
.footer-column a {
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--text-sm);
}
.footer-column a:hover {
    color: var(--color-accent);
}
.footer-bottom {
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: var(--text-sm);
}

@media(max-width: 800px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media(max-width: 500px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}