/* ==========================================================================
   TAGEBUCH EINES SPANISCHLEHRERS — CATÁLOGO V2
   Ricardo Ruiz · Spanisch Privatunterricht Köln Neumarkt · Clemensstraße 39
   Rejilla compacta, jaula estricta de miniaturas y cintas de nivel
   ========================================================================== */

:root {
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, Cambria, "Times New Roman", Times, serif;

  --color-bg-light: #FAF8F5;
  --color-surface-card: #FFFFFF;
  --color-surface-dark: #18181B;

  --color-text-main: #1D1D1F;
  --color-text-muted: #57534E;
  --color-text-subtle: #A8A29E;

  --color-accent: #C2410C; /* Terracota canónica de autor */
  --color-accent-hover: #9A3412;
  --color-border: #E7E5E4;
  --color-border-light: rgba(0, 0, 0, 0.06);

  --level-a2-b1: #059669; /* Verde esmeralda sutil */
  --level-b1-b2: #C2410C; /* Terracota de autor */

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-light);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
}

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

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

/* ==========================================================================
   1. NAVEGACIÓN SUPERIOR
   ========================================================================== */
.catalogo-nav {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
  padding: 0.85rem 1.25rem;
}

.catalogo-nav-inner {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text-main);
}

.brand-link-rrp {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  transition: color 0.2s ease;
}

.brand-link-rrp:hover {
  color: var(--color-accent-hover);
}

/* ==========================================================================
   2. CABECERA EDITORIAL
   ========================================================================== */
.catalogo-hero {
  padding: 4.5rem 1.25rem 2.5rem;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  background-color: #FFF7ED;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid #FFEDD5;
  margin-bottom: 1.25rem;
}

.hero-main-title {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  line-height: 1.2;
  color: var(--color-text-main);
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .hero-main-title {
    font-size: 3rem;
  }
}

.hero-author-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  font-style: italic;
  max-width: 620px;
  margin: 0 auto 1.75rem;
  line-height: 1.6;
}

.hero-quote-box {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 0 auto 2.5rem;
  max-width: 640px;
  box-shadow: var(--shadow-sm);
}

.hero-quote-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-text-main);
  line-height: 1.65;
  margin-bottom: 0.5rem;
}

.hero-quote-source {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-subtle);
  font-weight: 600;
}

/* ==========================================================================
   3. REJILLA COMPACTA Y JAULA ESTRICTA DE MINIATURAS
   ========================================================================== */
.catalogo-section {
  padding: 1rem 1.25rem 5rem;
  max-width: 820px;
  margin: 0 auto;
}

.section-label-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 760px;
  margin: 0 auto 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.section-label-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-subtle);
}

.section-label-count {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
}

.stories-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 760px;
  margin: 0 auto;
}

/* Tarjeta horizontal compacta */
.story-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.25s ease;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.story-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(194, 65, 12, 0.35);
}

/* Jaula estricta de miniaturas:
   Móvil: 140x95 px
   Escritorio: 180x115 px */
.story-card-thumb-wrap {
  width: 140px;
  height: 95px;
  min-width: 140px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  background-color: #E7E5E4;
}

@media (min-width: 640px) {
  .story-card-thumb-wrap {
    width: 180px;
    height: 115px;
    min-width: 180px;
  }
}

.story-card-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.story-card:hover .story-card-thumb-wrap img {
  transform: scale(1.05);
}

/* Cintas transversales de nivel */
.level-ribbon {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 2;
  font-size: 0.625rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: #FFFFFF;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  user-select: none;
}

.level-ribbon.level-a2-b1 {
  background: var(--level-a2-b1);
}

.level-ribbon.level-b1-b2 {
  background: var(--level-b1-b2);
}

/* Contenido de la tarjeta */
.story-card-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0.85rem 1.15rem;
  flex-grow: 1;
  min-width: 0; /* Previene desbordamiento de texto elástico */
}

@media (min-width: 640px) {
  .story-card-content {
    padding: 1rem 1.35rem;
  }
}

.story-card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
  margin-bottom: 0.4rem;
}

.meta-dot {
  color: var(--color-border);
}

.story-card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-main);
  margin-bottom: 0.3rem;
  transition: color 0.2s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (min-width: 640px) {
  .story-card-title {
    font-size: 1.25rem;
  }
}

.story-card:hover .story-card-title {
  color: var(--color-accent);
}

.story-card-subtitle {
  font-size: 0.8125rem;
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.4rem;
}

.story-card-action {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.2rem;
}

/* ==========================================================================
   4. CIERRE DE AUTOR & FOOTER EDITORIAL
   ========================================================================== */
.autor-abschluss-section {
  padding: 3.5rem 1.25rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.autor-abschluss-section .ort-notiz {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--color-text-main);
  margin-bottom: 0.85rem;
}

.autor-abschluss-section .zitat-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 580px;
  margin: 0 auto 1.25rem;
  font-style: italic;
}

.autor-abschluss-section .kontakt-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.autor-abschluss-section .kontakt-link a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.autor-abschluss-section .kontakt-link a:hover {
  color: var(--color-accent-hover);
}

.footer-catalogo {
  padding: 3rem 1.25rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  background-color: #F8F6F2;
}

.footer-catalogo p {
  color: var(--color-text-subtle);
}