/* Material Design 3 Tokens */
:root {
  /* Primary colors */
  --md-sys-color-primary: #6750a4;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #eaddff;
  --md-sys-color-on-primary-container: #21005e;

  /* Secondary colors */
  --md-sys-color-secondary: #625b71;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #e8def8;
  --md-sys-color-on-secondary-container: #1e192b;

  /* Tertiary colors */
  --md-sys-color-tertiary: #7d5260;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-tertiary-container: #ffd8e4;
  --md-sys-color-on-tertiary-container: #31111d;

  /* Neutral colors */
  --md-sys-color-background: #fffbfe;
  --md-sys-color-on-background: #1c1b1f;
  --md-sys-color-surface: #fffbfe;
  --md-sys-color-on-surface: #1c1b1f;
  --md-sys-color-surface-variant: #e7e0ec;
  --md-sys-color-on-surface-variant: #49454e;
  --md-sys-color-outline: #79747e;
  --md-sys-color-outline-variant: #c4c7c5;

  /* Error colors */
  --md-sys-color-error: #b3261e;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-error-container: #f9dedc;
  --md-sys-color-on-error-container: #410e0b;

  /* Typography */
  --md-sys-typescale-display-large-font-family: 'Roboto', sans-serif;
  --md-sys-typescale-display-large-font-size: 57px;
  --md-sys-typescale-display-large-font-weight: 400;
  --md-sys-typescale-display-large-line-height: 64px;

  --md-sys-typescale-headline-large-font-size: 32px;
  --md-sys-typescale-headline-large-font-weight: 400;
  --md-sys-typescale-headline-large-line-height: 40px;

  --md-sys-typescale-headline-medium-font-size: 28px;
  --md-sys-typescale-headline-medium-font-weight: 400;
  --md-sys-typescale-headline-medium-line-height: 36px;

  --md-sys-typescale-headline-small-font-size: 24px;
  --md-sys-typescale-headline-small-font-weight: 400;
  --md-sys-typescale-headline-small-line-height: 32px;

  --md-sys-typescale-title-large-font-size: 22px;
  --md-sys-typescale-title-large-font-weight: 500;
  --md-sys-typescale-title-large-line-height: 28px;

  --md-sys-typescale-title-medium-font-size: 16px;
  --md-sys-typescale-title-medium-font-weight: 500;
  --md-sys-typescale-title-medium-line-height: 24px;

  --md-sys-typescale-body-large-font-size: 16px;
  --md-sys-typescale-body-large-font-weight: 400;
  --md-sys-typescale-body-large-line-height: 24px;

  --md-sys-typescale-body-medium-font-size: 14px;
  --md-sys-typescale-body-medium-font-weight: 500;
  --md-sys-typescale-body-medium-line-height: 20px;

  --md-sys-typescale-label-large-font-size: 14px;
  --md-sys-typescale-label-large-font-weight: 500;
  --md-sys-typescale-label-large-line-height: 20px;
}

/* Global styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  font-size: var(--md-sys-typescale-body-large-font-size);
  line-height: var(--md-sys-typescale-body-large-line-height);
}

/* Typography */
h1 {
  font-size: var(--md-sys-typescale-display-large-font-size);
  font-weight: var(--md-sys-typescale-display-large-font-weight);
  line-height: var(--md-sys-typescale-display-large-line-height);
  margin: 1em 0 0.5em 0;
}

h2 {
  font-size: var(--md-sys-typescale-headline-large-font-size);
  font-weight: var(--md-sys-typescale-headline-large-font-weight);
  line-height: var(--md-sys-typescale-headline-large-line-height);
  margin: 1em 0 0.5em 0;
}

h3 {
  font-size: var(--md-sys-typescale-headline-medium-font-size);
  font-weight: var(--md-sys-typescale-headline-medium-font-weight);
  line-height: var(--md-sys-typescale-headline-medium-line-height);
  margin: 0.8em 0 0.4em 0;
}

h4, h5, h6 {
  font-size: var(--md-sys-typescale-headline-small-font-size);
  font-weight: var(--md-sys-typescale-headline-small-font-weight);
  line-height: var(--md-sys-typescale-headline-small-line-height);
  margin: 0.8em 0 0.4em 0;
}

p {
  margin-bottom: 1em;
}

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

a:hover {
  color: var(--md-sys-color-on-primary-container);
  text-decoration: underline;
}

/* Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.card {
  background-color: var(--md-sys-color-surface);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--md-sys-color-outline-variant);
  transition: box-shadow 0.2s ease;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 24px;
  border: none;
  border-radius: 24px;
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: var(--md-sys-typescale-label-large-font-weight);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.button--primary {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.button--primary:hover {
  background-color: #5a4799;
}

.button--primary:active {
  background-color: #4f3d8a;
}

.button--secondary {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.button--secondary:hover {
  background-color: #d5cce1;
}

.button--tertiary {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  border: 2px solid var(--md-sys-color-outline);
}

.button--tertiary:hover {
  background-color: var(--md-sys-color-primary-container);
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

label {
  display: block;
  font-size: var(--md-sys-typescale-body-medium-font-size);
  font-weight: var(--md-sys-typescale-body-medium-font-weight);
  margin-bottom: 8px;
  color: var(--md-sys-color-on-background);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: 8px;
  font-size: var(--md-sys-typescale-body-large-font-size);
  font-family: inherit;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 3px rgba(103, 80, 164, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* Header */
.header {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: 24px 0;
  margin-bottom: 40px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.header__logo {
  font-size: var(--md-sys-typescale-headline-large-font-size);
  font-weight: 600;
  color: inherit;
  text-decoration: none;
}

.header__nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.header__nav a {
  color: inherit;
  text-decoration: none;
  font-size: var(--md-sys-typescale-body-large-font-size);
  transition: opacity 0.2s ease;
}

.header__nav a:hover {
  opacity: 0.8;
}

/* Post list */
.post-list {
  list-style: none;
}

.post-item {
  padding: 24px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  transition: background-color 0.2s ease;
}

.post-item:hover {
  background-color: var(--md-sys-color-surface-variant);
}

.post-item:last-child {
  border-bottom: none;
}

.post-title {
  font-size: var(--md-sys-typescale-title-large-font-size);
  font-weight: var(--md-sys-typescale-title-large-font-weight);
  margin-bottom: 8px;
}

.post-meta {
  font-size: var(--md-sys-typescale-body-medium-font-size);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 12px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.post-excerpt {
  margin-bottom: 12px;
  color: var(--md-sys-color-on-background);
}

.post-type {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.post-type--micro {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

/* Tags */
.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  transition: all 0.2s ease;
}

.tag:hover {
  background-color: var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
}

/* Footer */
.footer {
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  padding: 40px 0 24px;
  margin-top: 60px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.footer__content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer__section h4 {
  margin-top: 0;
  color: var(--md-sys-color-on-surface);
}

.footer__section ul {
  list-style: none;
}

.footer__section ul li {
  margin-bottom: 8px;
}

.footer__section a {
  color: var(--md-sys-color-on-surface-variant);
}

.footer__section a:hover {
  color: var(--md-sys-color-primary);
  text-decoration: underline;
}

.footer__bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  font-size: var(--md-sys-typescale-body-medium-font-size);
}

/* Responsive */
@media (max-width: 768px) {
  .header__content {
    flex-direction: column;
    gap: 16px;
  }

  .header__nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 28px;
  }

  .button {
    width: 100%;
  }
}

/* Code highlighting */
pre {
  background-color: var(--md-sys-color-surface-variant);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 16px 0;
}

code {
  font-family: 'Courier New', monospace;
  font-size: 14px;
}

pre code {
  background-color: transparent;
  color: var(--md-sys-color-on-background);
}

/* Utility classes */
.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;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-16 {
  gap: 16px;
}

.gap-32 {
  gap: 32px;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-24 {
  margin-bottom: 24px;
}