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

:root {
  --bg: #0F0F0F;
  --bg-card: #1A1A1A;
  --text: #FFFFFF;
  --text-muted: #A0A0A0;
  --accent: #F59E0B;
  --accent-hover: #D97706;
  --max-width: 800px;
  --section-padding: 60px 20px;
}

@media (min-width: 768px) {
  :root {
    --section-padding: 120px 20px;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-padding);
}

/* ---- HERO ---- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.hero__wordmark {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .hero__wordmark {
    font-size: 80px;
  }
}

.hero__tagline {
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 32px;
  letter-spacing: 0.01em;
}

@media (min-width: 768px) {
  .hero__tagline {
    font-size: 24px;
  }
}

.hero__description {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

.hero__ctas {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

@media (min-width: 480px) {
  .hero__ctas {
    flex-direction: row;
    justify-content: center;
  }
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  border-radius: 4px;
  transition: all 0.2s ease;
  cursor: pointer;
  text-align: center;
  min-width: 180px;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
  border: 2px solid var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--bg);
}

.btn--outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn--outline:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ---- SECTIONS ---- */

.section {
  border-top: 1px solid #1F1F1F;
}

.section__title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section__title {
    font-size: 40px;
    margin-bottom: 64px;
  }
}

/* ---- THE PROBLEM ---- */

.problem__quotes {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.problem__quote {
  padding-left: 24px;
  border-left: 3px solid var(--accent);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.5;
}

@media (min-width: 768px) {
  .problem__quote {
    font-size: 28px;
    padding-left: 32px;
  }
}

/* ---- WHAT WE BELIEVE ---- */

.beliefs {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.belief {
  display: flex;
  gap: 20px;
  align-items: baseline;
}

.belief__number {
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  line-height: 1;
  min-width: 36px;
}

.belief__text {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text);
}

/* ---- IMAGINE ---- */

.imagine__items {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.imagine__item {
  /* stagger animation target */
}

.imagine__statement {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  line-height: 1.4;
}

@media (min-width: 768px) {
  .imagine__statement {
    font-size: 28px;
  }
}

.imagine__proof {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ---- PRINCIPLES ---- */

.principles__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.principles__item {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  padding-left: 16px;
  border-left: 2px solid #2A2A2A;
  transition: border-color 0.2s ease;
}

.principles__item:hover {
  border-left-color: var(--accent);
}

.principles__numeral {
  color: var(--text-muted);
  font-weight: 400;
  margin-right: 8px;
}

/* ---- GET INVOLVED ---- */

.involved__form {
  margin-bottom: 64px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 500px;
}

@media (min-width: 600px) {
  .form__row {
    display: flex;
    gap: 16px;
  }
  .form__row .form__input {
    flex: 1;
  }
}

.form__input {
  padding: 14px 16px;
  font-size: 16px;
  font-family: inherit;
  background: var(--bg-card);
  border: 1px solid #333;
  border-radius: 4px;
  color: var(--text);
  transition: border-color 0.2s ease;
  width: 100%;
}

.form__input:focus {
  outline: none;
  border-color: var(--accent);
}

.form__input::placeholder {
  color: #666;
}

.form__success {
  display: none;
  color: var(--accent);
  font-weight: 600;
  font-size: 18px;
  padding: 20px 0;
}

.form__success.is-visible {
  display: block;
}

.involved__social {
  margin-bottom: 64px;
}

.involved__social h3,
.involved__donate h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.social-link {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid #333;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.involved__donate p {
  color: var(--text-muted);
  font-style: italic;
}

/* ---- FOOTER ---- */

.footer {
  border-top: 1px solid #1F1F1F;
  padding: 48px 20px;
  text-align: center;
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer__tagline {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer__license {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.footer__link {
  font-size: 14px;
  color: var(--text-muted);
}

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

/* ---- ANIMATIONS ---- */

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

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

.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 400ms; }
.stagger-4 { transition-delay: 600ms; }
.stagger-5 { transition-delay: 800ms; }