/* Penco Color Palette */
:root {
  /* Paper backgrounds */
  --penco-paper: #F4F1EA;
  --penco-paper-raised: #FAF8F3;

  /* Ink colors */
  --penco-ink-primary: #1C1C1C;
  --penco-ink-secondary: #5A5A5A;
  --penco-ink-muted: #8C8C8C;

  /* Utility stickers */
  --penco-sticker-green: #2FA24B;
  --penco-sticker-orange: #F26A21;

  /* Cover colors */
  --penco-red-cover: #E5392F;
  --penco-teal-cover: #1E6E73;
  --penco-blue-cover: #3A6FA8;
  --penco-denim-blue: #2F5E7A;
  --penco-dusty-plum: #5B4A6A;
  --penco-aqua: #1F7F86;

  /* Borders */
  --penco-border: #DED9CE;
  --penco-shadow: rgba(0, 0, 0, 0.1);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;

  /* Border radius */
  --radius: 6px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--penco-paper);
  color: var(--penco-ink-primary);
  line-height: 1.6;
  padding: var(--space-md);
}

/* Typography */
h1 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
  font-weight: 600;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  margin-top: var(--space-lg);
  font-weight: 600;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  margin-top: var(--space-md);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-sm);
}

a {
  color: var(--penco-teal-cover);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Navigation */
nav {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--penco-border);
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-md);
}

nav a {
  color: var(--penco-ink-primary);
  font-weight: 500;
}

nav a:hover {
  text-decoration: none;
  color: var(--penco-aqua);
}

nav a.active {
  border-bottom: 2.3px solid var(--penco-aqua);
  padding-bottom: 2px;
}

/* Page subtitle */
.page-subtitle {
  margin-bottom: 2.4rem;
}

/* Container */
.container {
  max-width: 800px;
  margin: 0 auto;
}

/* Cards */
a.card {
  display: block;
  text-decoration: none;
  background-color: var(--penco-paper-raised);
  border: 1px solid var(--penco-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--penco-shadow);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  height: 380px;
}

a.card:hover {
  box-shadow: 0 6px 16px var(--penco-shadow);
  transform: translateY(-2px);
  text-decoration: none;
}

.card-image {
  position: relative;
  height: 70%;
  background-color: var(--penco-border);
  background-size: cover;
  background-position: center;
}

.card-date {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: rgba(255, 255, 255, 0.95);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--penco-ink-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-content {
  height: 30%;
  padding: var(--space-md);
  background-color: var(--penco-paper-raised);
}

.card-content h3 {
  margin: 0 0 8px 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--penco-ink-primary);
  line-height: 1.3;
}

.card-description {
  color: var(--penco-ink-secondary);
  font-size: 0.85rem;
  margin: 0;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* Card list */
.card-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Status badges */
.status-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.status-shipped {
  color: var(--penco-sticker-green);
  border: 1px solid var(--penco-sticker-green);
}

.status-building {
  color: var(--penco-sticker-orange);
  border: 1px solid var(--penco-sticker-orange);
}

.status-ideas {
  color: var(--penco-denim-blue);
  border: 1px solid var(--penco-denim-blue);
}

/* Filter buttons */
.filters {
  margin-bottom: var(--space-lg);
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1rem;
  background-color: var(--penco-paper-raised);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid var(--penco-ink-primary);
  color: var(--penco-ink-primary);
}

.filter-btn:hover {
  opacity: 0.8;
}

.filter-btn.active {
  color: var(--penco-paper-raised);
}

/* All button - default dark */
.filter-btn[data-filter="all"] {
  border-color: var(--penco-ink-primary);
  color: var(--penco-ink-primary);
}

.filter-btn[data-filter="all"].active {
  background-color: var(--penco-ink-primary);
  border-color: var(--penco-ink-primary);
  color: var(--penco-paper-raised);
}

/* Shipped button - green */
.filter-btn[data-filter="shipped"] {
  border-color: var(--penco-sticker-green);
  color: var(--penco-sticker-green);
}

.filter-btn[data-filter="shipped"].active {
  background-color: var(--penco-sticker-green);
  border-color: var(--penco-sticker-green);
  color: var(--penco-paper-raised);
}

/* Building button - orange */
.filter-btn[data-filter="building"] {
  border-color: var(--penco-sticker-orange);
  color: var(--penco-sticker-orange);
}

.filter-btn[data-filter="building"].active {
  background-color: var(--penco-sticker-orange);
  border-color: var(--penco-sticker-orange);
  color: var(--penco-paper-raised);
}

/* Ideas button - denim blue */
.filter-btn[data-filter="ideas"] {
  border-color: var(--penco-denim-blue);
  color: var(--penco-denim-blue);
}

.filter-btn[data-filter="ideas"].active {
  background-color: var(--penco-denim-blue);
  border-color: var(--penco-denim-blue);
  color: var(--penco-paper-raised);
}

/* Banner image */
.banner-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: var(--space-lg);
}

/* Current work section */
.current-work {
  background-color: var(--penco-paper-raised);
  border-left: 3px solid var(--penco-sticker-green);
  padding: var(--space-md);
  margin-bottom: var(--space-xl);
  border-radius: var(--radius);
}

.current-work h2 {
  margin-top: 0;
  font-size: 1.25rem;
}

/* Article content */
.article-content {
  margin-top: var(--space-lg);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: var(--space-md) 0;
}

.article-content code {
  background-color: var(--penco-paper-raised);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

.article-content pre {
  background-color: var(--penco-paper-raised);
  padding: var(--space-md);
  border-radius: var(--radius);
  border: 1px solid var(--penco-border);
  overflow-x: auto;
  margin: var(--space-md) 0;
}

.article-content pre code {
  background-color: transparent;
  padding: 0;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-bottom: var(--space-md);
  color: var(--penco-ink-secondary);
}

.back-link:hover {
  color: var(--penco-teal-cover);
}