/* BASE STYLES */

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

html {
  font-size: 16px;
  color-scheme: light;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-base);
  transition: background-color var(--transition-slow), color var(--transition-slow);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: var(--space-3);
  top: var(--space-3);
  width: auto;
  height: auto;
  padding: var(--space-2) var(--space-4);
  background: var(--color-text-primary);
  color: var(--color-bg-surface);
  border-radius: var(--radius-md);
  z-index: 10000;
  font-size: var(--text-sm);
  outline: var(--focus-ring-width) solid var(--color-text-link);
  outline-offset: var(--focus-ring-offset);
}

/* Landing + shared content helpers (Phase 1) */
.landing-wrap {
  width: 100%;
  max-width: var(--landing-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.landing-hero {
  text-align: center;
  padding: var(--space-16) 0 var(--space-12);
}

.landing-kicker {
  margin: 0 0 var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-text-muted);
}

.landing-display {
  margin: 0 auto;
  max-width: 48rem;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.landing-lead {
  margin: var(--space-6) auto 0;
  max-width: 42rem;
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
  color: var(--color-text-secondary);
}

.landing-actions {
  margin-top: var(--space-10);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

@media (min-width: 640px) {
  .landing-actions {
    flex-direction: row;
    justify-content: center;
  }
}

.landing-section {
  padding: var(--space-16) 0;
}

.landing-section--band {
  background: color-mix(in srgb, var(--color-bg-surface) 45%, var(--color-bg-base));
  border-top: 0.5px solid var(--color-border-subtle);
}

.section-heading {
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.section-sub {
  text-align: center;
  margin-top: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.landing-grid-3 {
  list-style: none;
  display: grid;
  margin-top: var(--space-12);
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .landing-grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.marketing-card {
  border-radius: var(--radius-xl);
  border: 0.5px solid var(--color-border-subtle);
  background: var(--color-bg-surface);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base), transform var(--transition-base),
    border-color var(--transition-base);
}

.marketing-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
  border-color: var(--color-border-default);
}

.marketing-card--step {
  background: color-mix(in srgb, var(--color-bg-subtle) 70%, var(--color-bg-surface));
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-text-primary);
  color: var(--color-bg-surface);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

html[data-theme="dark"] .step-num {
  background: var(--color-text-primary);
  color: var(--color-bg-inverse);
}

.marketing-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
}

.marketing-card p {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

.marketing-card .card-icon {
  margin: 0 auto var(--space-4);
  display: flex;
  width: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--color-bg-subtle);
  font-size: var(--text-xl);
}

.cta-panel {
  max-width: 42rem;
  margin: 0 auto;
  border-radius: var(--radius-2xl);
  border: 0.5px solid var(--color-border-subtle);
  background: var(--color-bg-subtle);
  padding: var(--space-12) var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-xs);
}

.site-footer {
  border-top: 0.5px solid var(--color-border-subtle);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.site-footer strong {
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
}

/* Feed page shell (Phase 1) */
.feed-page {
  background: var(--color-bg-base);
}

.feed-main-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-16);
}

.feed-hero-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.feed-hero-desc {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  max-width: 36rem;
}

.date-heading {
  margin: var(--space-8) 0 var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 0.5px solid var(--color-border-subtle);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.feed-footer {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  border-top: 0.5px solid var(--color-border-subtle);
}

.feed-footer a {
  color: var(--color-text-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* List-style feed row ( bridges Phase 1 → Phase 2 ) */
.feed-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-bottom: 0.5px solid var(--color-border-subtle);
  color: inherit;
  transition: background var(--transition-fast);
}

.feed-row:hover {
  background: var(--color-bg-subtle);
}

.feed-row__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.feed-row__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
}

.feed-row__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feed-row--thumb {
  flex-direction: row;
  align-items: stretch;
  gap: 0;
  padding: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 0.5px solid var(--color-border-subtle);
  margin-bottom: var(--space-3);
  background: var(--color-bg-surface);
}

.feed-row--thumb:hover {
  box-shadow: var(--shadow-sm);
}

.feed-row__thumb {
  flex: 0 0 6.5rem;
  min-height: 5.5rem;
  background: var(--color-bg-subtle);
}

.feed-row__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feed-row--thumb .feed-row__body {
  flex: 1;
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

@media (max-width: 640px) {
  .feed-row--thumb {
    flex-direction: column;
  }
  .feed-row__thumb {
    width: 100%;
    flex: none;
    min-height: 9rem;
  }
}

.preview-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-10);
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.preview-card {
  opacity: 0;
  transform: translateY(12px);
  animation: preview-in 0.55s ease forwards;
}

.preview-card:nth-child(1) {
  animation-delay: 0.05s;
}
.preview-card:nth-child(2) {
  animation-delay: 0.1s;
}
.preview-card:nth-child(3) {
  animation-delay: 0.15s;
}
.preview-card:nth-child(4) {
  animation-delay: 0.2s;
}
.preview-card:nth-child(5) {
  animation-delay: 0.25s;
}

@keyframes preview-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .preview-card {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .marketing-card:hover {
    transform: none;
  }
}