/* ----------------------------------------------------------
   ROOT PALETTE — Atmospheric + Medium Vibrancy Earth
---------------------------------------------------------- */

:root {
  /* Earth palette — medium vibrancy */
  --color-ocean-blue: #5dadec;
  --color-ocean-blue-deep: #2a7fba;
  --color-land-green: #7bc47f;
  --color-land-green-soft: #a8d5a2;
  --color-earth-brown: #c8a878;
  --color-earth-brown-soft: #d9c2a3;

  /* Neutrals */
  --color-bg: #f8f5ef;
  --color-white: #ffffff;
  --color-text: #3f3f3f;
  --color-soft-gray: #d8d5cf;
  --color-light-blue: #a9d6e5;

  /* Layout */
  --max-width: 1120px;
  --max-width-narrow: 900px;
  --radius-card: 14px;
  --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.06);
  --shadow-lift: 0 14px 36px rgba(0, 0, 0, 0.10);
}

/* ----------------------------------------------------------
   GLOBAL RESET + TYPOGRAPHY
---------------------------------------------------------- */

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.65;
  letter-spacing: 0.2px;
}

a {
  color: var(--color-ocean-blue-deep);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--color-ocean-blue);
}

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

/* ----------------------------------------------------------
   LAYOUT HELPERS
---------------------------------------------------------- */

.page {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

main {
  flex: 1;
}

section {
  padding: 90px 0;
}

@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }
}

/* ----------------------------------------------------------
   HEADINGS
---------------------------------------------------------- */

h1,
h2,
h3 {
  margin: 0 0 18px;
  font-weight: 600;
  color: var(--color-text);
}

h1 {
  font-size: 2.9rem;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 2.1rem;
}

h3 {
  font-size: 1.35rem;
}

p {
  margin: 0 0 18px;
}

/* ----------------------------------------------------------
   HEADER / NAVIGATION
---------------------------------------------------------- */

header {
  background-color: var(--color-bg);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: radial-gradient(
    circle at 30% 30%,
    var(--color-ocean-blue) 0%,
    var(--color-ocean-blue-deep) 40%,
    var(--color-land-green) 70%,
    var(--color-earth-brown) 100%
  );
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.brand-title {
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-text);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
  font-size: 0.98rem;
}

nav a {
  color: var(--color-text);
  font-weight: 500;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

nav a:hover,
nav a:focus {
  color: var(--color-ocean-blue-deep);
  border-bottom: 2px solid var(--color-ocean-blue);
}

/* ----------------------------------------------------------
   HERO — Atmospheric + Medium Vibrancy Earth Gradient
---------------------------------------------------------- */

.hero {
  padding-top: 150px;
  padding-bottom: 120px;
  text-align: center;
  color: var(--color-ocean-blue-deep); /* UPDATED */
  background: radial-gradient(
      circle at 50% 22%,
      rgba(169, 214, 229, 0.90) 0%,
      rgba(168, 213, 162, 0.70) 36%,
      rgba(217, 194, 163, 0.50) 68%,
      rgba(248, 245, 239, 1) 100%
  );
  box-shadow: inset 0 -40px 60px rgba(0, 0, 0, 0.05);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.28rem;
  max-width: 760px;
  margin: 0 auto 18px;
  color: rgba(0, 0, 0, 0.85);
}

.hero-support {
  font-size: 1.05rem;
  max-width: 660px;
  margin: 0 auto;
  color: rgba(0, 0, 0, 0.80);
}

@media (max-width: 768px) {
  .hero {
    padding-top: 110px;
    padding-bottom: 80px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }
}

/* ----------------------------------------------------------
   SECTION TITLES
---------------------------------------------------------- */

.section-title {
  font-size: 2.15rem;
  color: var(--color-ocean-blue-deep);
  margin-bottom: 32px;
  letter-spacing: -0.3px;
}

/* ----------------------------------------------------------
   CARDS — Earth-Inspired, Soft Gradients, Medium Vibrancy
---------------------------------------------------------- */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px;
}

@media (max-width: 992px) {
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.9) 0%,
    rgba(248, 245, 239, 0.95) 100%
  );
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border-top: 6px solid var(--color-land-green-soft);
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.card-title {
  font-size: 1.18rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.card-description {
  font-size: 1rem;
  margin-bottom: 14px;
  color: rgba(0, 0, 0, 0.80);
}

.card-link {
  margin-top: 10px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-ocean-blue-deep);
}

/* ----------------------------------------------------------
   SECTION: WHY THIS SITE EXISTS — Atmospheric Blue
---------------------------------------------------------- */

.section-why {
  background: linear-gradient(
    180deg,
    rgba(169, 214, 229, 0.55) 0%,
    rgba(248, 245, 239, 1) 100%
  );
  padding-top: 100px;
  padding-bottom: 100px;
}

.section-why .section-title {
  color: var(--color-ocean-blue-deep);
  text-align: left;
}

.why-text {
  max-width: 760px;
  font-size: 1.08rem;
}

.why-list {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  max-width: 760px;
}

.why-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid rgba(216, 213, 207, 0.7);
}

.why-list li:first-child {
  border-top: none;
}

.why-bullet {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 8px;
  background-color: var(--color-land-green);
  flex-shrink: 0;
}

/* ----------------------------------------------------------
   SECTION: LEARN AT YOUR OWN PACE — Soft Green Atmosphere
---------------------------------------------------------- */

.section-learn {
  background: linear-gradient(
    180deg,
    rgba(168, 213, 162, 0.40) 0%,
    rgba(248, 245, 239, 1) 100%
  );
}

.section-learn .section-title {
  color: var(--color-ocean-blue-deep);
}

.section-learn p {
  max-width: 760px;
  font-size: 1.08rem;
}

/* ----------------------------------------------------------
   FOOTER — Warm Earth Gradient
---------------------------------------------------------- */

footer {
  background: linear-gradient(
    180deg,
    rgba(167, 137, 99, 1) 0%,
    rgba(200, 168, 120, 1) 100%
  );
  color: var(--color-bg);
  padding: 70px 0;
  margin-top: 40px;
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.08);
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px;
}

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

.footer-column-title {
  font-weight: 600;
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.98rem;
}

.footer-links li + li {
  margin-top: 8px;
}

.footer-links a {
  color: var(--color-bg);
  opacity: 0.92;
  transition: opacity 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus {
  opacity: 1;
  text-decoration: underline;
}

.footer-note {
  margin-top: 28px;
  font-size: 0.88rem;
  opacity: 0.88;
}
footer {
  text-align: center;
}