:root {
  --background-color: #121212;
  --surface-color: #1e1e1e;
  --primary-color: #00aaff;
  --text-color: #e0e0e0;
  --heading-color: #ffffff;
  --border-color: #333333;
  --shadow-color: rgba(0, 0, 0, 0.5);
  --header-height: 70px;

  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
}
:root {
  --background-color: #121212;
  --surface-color: #1e1e1e;
  --primary-color: #00aaff;
  --text-color: #e0e0e0;
  --heading-color: #ffffff;
  --border-color: #333333;
  --shadow-color: rgba(0, 0, 0, 0.5);
  --header-height: 70px;

  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

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

#root {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
  flex-grow: 1;
}

/* Header & Navigation */
.main-header {
  width: 100%;
  height: var(--header-height);
  background-color: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.main-header .logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--heading-color);
}

.main-header nav {
  display: flex;
  gap: 1.5rem;
}

.main-header nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  transition: color 0.3s ease;
  padding: 0.5rem 0;
  position: relative;
}

.main-header nav a:hover {
  color: var(--primary-color);
}

.main-header nav a::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transform-origin: bottom right;
    transition: transform 0.25s ease-out;
}

.main-header nav a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}


/* Main Content Sections */
main > section {
  margin-bottom: 5rem;
  padding-top: 2rem;
}

.hero-section {
  text-align: center;
  padding-top: 4rem;
}

.hero-section h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  color: var(--heading-color);
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.hero-section .subtitle {
  font-size: 1.2rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 2rem;
}

h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--heading-color);
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
}

p {
  margin-bottom: 1rem;
  max-width: 75ch;
}

.hero-section p {
    margin-left: auto;
    margin-right: auto;
}

.thesis-quote {
  background-color: var(--surface-color);
  border-left: 4px solid var(--primary-color);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  font-size: 1.1rem;
  font-style: italic;
  box-shadow: 0 4px 15px var(--shadow-color);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.evidence-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px var(--shadow-color);
  display: flex;
  flex-direction: column;
}

.evidence-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow-color);
}

.evidence-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.evidence-card ul {
  list-style: none;
  padding-left: 0;
  margin-top: auto;
}

.evidence-card li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.evidence-card li:last-child {
  border-bottom: none;
}

.cta-section {
  text-align: center;
  background-color: var(--surface-color);
  padding: 3rem 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 15px var(--shadow-color);
}

/* Specific styling for the CTA section heading to be properly centered */
.cta-section h2 {
  border-left: none;
  padding-left: 0;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--heading-color);
  background-color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.btn svg {
  transition: fill 0.3s ease;
}

.btn:hover, .btn:focus {
  background-color: transparent;
  color: var(--primary-color);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--primary-color);
    color: var(--heading-color);
}

.btn span {
    line-height: 1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Footer */
.main-footer {
  width: 100%;
  max-width: 900px;
  padding: 2rem 1rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.9rem;
  color: #888888;
}

.main-footer p {
  margin-bottom: 0.5rem;
  max-width: 100%;
}

.main-footer a {
  color: #aaaaaa;
  text-decoration: none;
  transition: color 0.3s ease;
}

.main-footer a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

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

#root {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
  flex-grow: 1;
}

/* Header & Navigation */
.main-header {
  width: 100%;
  height: var(--header-height);
  background-color: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.main-header .logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--heading-color);
}

.main-header nav {
  display: flex;
  gap: 1.5rem;
}

.main-header nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  transition: color 0.3s ease;
  padding: 0.5rem 0;
  position: relative;
}

.main-header nav a:hover {
  color: var(--primary-color);
}

.main-header nav a::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transform-origin: bottom right;
    transition: transform 0.25s ease-out;
}

.main-header nav a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}


/* Main Content Sections */
main > section {
  margin-bottom: 5rem;
  padding-top: 2rem;
}

.hero-section {
  text-align: center;
  padding-top: 4rem;
}

.hero-section h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  color: var(--heading-color);
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.hero-section .subtitle {
  font-size: 1.2rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 2rem;
}

h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--heading-color);
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
}

p {
  margin-bottom: 1rem;
  max-width: 75ch;
}

.hero-section p {
    margin-left: auto;
    margin-right: auto;
}

.thesis-quote {
  background-color: var(--surface-color);
  border-left: 4px solid var(--primary-color);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  font-size: 1.1rem;
  font-style: italic;
  box-shadow: 0 4px 15px var(--shadow-color);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.evidence-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px var(--shadow-color);
  display: flex;
  flex-direction: column;
}

.evidence-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow-color);
}

.evidence-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.evidence-card ul {
  list-style: none;
  padding-left: 0;
  margin-top: auto;
}

.evidence-card li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.evidence-card li:last-child {
  border-bottom: none;
}

.cta-section {
  text-align: center;
  background-color: var(--surface-color);
  padding: 3rem 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 15px var(--shadow-color);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--heading-color);
  background-color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.btn svg {
  transition: fill 0.3s ease;
}

.btn:hover, .btn:focus {
  background-color: transparent;
  color: var(--primary-color);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--primary-color);
    color: var(--heading-color);
}

.btn span {
    line-height: 1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Footer */
.main-footer {
  width: 100%;
  max-width: 900px;
  padding: 2rem 1rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.9rem;
  color: #888888;
}

.main-footer p {
  margin-bottom: 0.5rem;
  max-width: 100%;
}

.main-footer a {
  color: #aaaaaa;
  text-decoration: none;
  transition: color 0.3s ease;
}

.main-footer a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}