/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --yellow: #f5c842;
  --yellow-light: #fdf0c4;
  --yellow-dark: #c9a020;
  --gray-900: #1a1a1a;
  --gray-800: #2d2d2d;
  --gray-700: #3d3d3d;
  --gray-500: #6b6b6b;
  --gray-400: #8a8a8a;
  --gray-300: #b0b0b0;
  --gray-200: #d4d4d4;
  --gray-100: #ececec;
  --gray-50: #f5f5f5;
  --white: #fafafa;
}

body {
  font-family: "Lucida Grande", "Segoe UI", Helvetica, Arial, sans-serif;
  background-color: var(--gray-100);
  color: var(--gray-800);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--gray-700);
  text-decoration: none;
}

a:hover {
  color: var(--yellow-dark);
}

/* === Header === */
header {
  background-color: var(--gray-800);
  color: var(--gray-100);
  text-align: center;
  padding: 1.5rem 1rem 1rem;
  border-bottom: 4px solid var(--yellow);
}

header h1 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

header h1 a {
  color: var(--yellow);
  text-decoration: none;
}

header h1 a:hover {
  color: var(--yellow-light);
}

.tagline {
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-top: 0.25rem;
  font-style: italic;
}

.header-nav {
  margin-top: 0.75rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.header-nav a {
  color: var(--gray-300);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.header-nav a:hover {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

/* === Main === */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

/* === Comic === */
#comic-container {
  text-align: center;
  width: 100%;
}

#comic-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

#comic-wrapper {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: 4px;
  padding: 1.5rem;
  display: inline-block;
  max-width: 100%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

#comic-img {
  max-width: 100%;
  height: auto;
  display: block;
  image-rendering: auto;
}

#comic-date {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* === Navigation === */
#comic-nav {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

#comic-nav button {
  background: var(--gray-800);
  color: var(--gray-100);
  border: 2px solid var(--gray-700);
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

#comic-nav button:hover {
  background: var(--yellow);
  border-color: var(--yellow-dark);
  color: var(--gray-900);
}

#comic-nav button:disabled {
  opacity: 0.35;
  cursor: default;
  background: var(--gray-700);
  border-color: var(--gray-700);
  color: var(--gray-500);
}

#comic-nav button:disabled:hover {
  background: var(--gray-700);
  border-color: var(--gray-700);
  color: var(--gray-500);
}

/* === Footer === */
footer {
  text-align: center;
  padding: 1.25rem 1rem;
  font-size: 0.75rem;
  color: var(--gray-500);
  background: var(--gray-200);
  border-top: 2px solid var(--gray-300);
  margin-top: 2rem;
}

/* === Archive page === */
.archive-list {
  list-style: none;
  width: 100%;
  max-width: 600px;
}

.archive-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.archive-list li:last-child {
  border-bottom: none;
}

.archive-list a {
  font-weight: 600;
  color: var(--gray-800);
}

.archive-list a:hover {
  color: var(--yellow-dark);
}

.archive-list .archive-num {
  color: var(--yellow-dark);
  font-weight: 700;
  margin-right: 0.5rem;
  min-width: 2rem;
}

.archive-list .archive-date {
  color: var(--gray-400);
  font-size: 0.8rem;
}

/* === About page === */
.about-content {
  max-width: 600px;
  text-align: left;
  line-height: 1.8;
}

.about-content h2 {
  color: var(--gray-900);
  margin-bottom: 0.75rem;
  border-bottom: 3px solid var(--yellow);
  display: inline-block;
  padding-bottom: 0.2rem;
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--gray-700);
}

/* === Responsive === */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.8rem;
  }

  #comic-wrapper {
    padding: 0.75rem;
  }

  #comic-nav button {
    padding: 0.4rem 0.7rem;
    font-size: 0.8rem;
  }
}