/* ==========================================================================
   QUINA RIBEIRO — GUIA DE ESTILOS & SISTEMA CSS UNIFICADO
   Soluções Digitais & Consultoria para a Indústria Alimentar
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS (Variáveis Globais)
   -------------------------------------------------------------------------- */
:root {
  /* Cores Principais */
  --color-bg: #F5F2EC;
  --color-bg-alt: #EAE6DC;
  --color-surface: #FFFFFF;
  --color-text: #16160F;
  --color-text-muted: #4C4B41;
  --color-text-subtle: #8A8875;
  --color-accent: #2F4A3C;
  --color-accent-hover: #1E3127;

  /* Bordas e Linhas de Separação */
  --color-border: rgba(22, 22, 15, 0.14);
  --color-border-light: rgba(22, 22, 15, 0.08);
  --color-tag-bg: rgba(22, 22, 15, 0.04);
  --color-hover-bg: rgba(22, 22, 15, 0.02);

  /* Tipografia */
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;

  /* Espaçamento e Layout */
  --container-max: 1200px;
  --container-pad: 1.5rem;
  --radius-sm: 2px;
  --radius-md: 6px;
  --radius-lg: 12px;

  /* Transições */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-smooth: 0.8s cubic-bezier(.16, .8, .24, 1);
}

/* --------------------------------------------------------------------------
   2. RESET CSS & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-text);
}

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

/* --------------------------------------------------------------------------
   3. TIPOGRAFIA & HIERARQUIA
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 1rem 0;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
}

h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.4rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

h4 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1.25rem 0;
  color: var(--color-text-muted);
}

.kicker {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 0.75rem;
  display: block;
}

.accent-serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   4. LAYOUT & UTILITY CLASSES
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.section-padding {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 900px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

.grid-texture {
  background-image: 
    linear-gradient(var(--color-border-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-light) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* Animações e Revelo */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Marquee / Carrossel Contínuo */
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee-scroll 26s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

/* --------------------------------------------------------------------------
   5. COMPONENTES UI
   -------------------------------------------------------------------------- */

/* --- Botões --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.4rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
  border: 1px solid transparent;
  line-height: 1.3;
  letter-spacing: 0;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary,
a.btn-primary {
  background-color: var(--color-text);
  color: #F5F2EC !important;
  border-color: var(--color-text);
}

.btn-primary:hover,
a.btn-primary:hover {
  background-color: #2D2D24;
  color: #F5F2EC !important;
  border-color: #2D2D24;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-bg);
}

.btn-sm {
  padding: 0.5rem 0.9rem;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 0.9rem 1.8rem;
  font-size: 1rem;
}

/* --- Linha de Solução / Lista Interativa (.sol-row) --- */
.sol-row {
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
  display: grid;
  grid-template-columns: 70px 1fr 1.4fr;
  gap: 1.5rem;
  align-items: flex-start;
  transition: padding-left var(--transition-base), background-color var(--transition-base);
}

.sol-row:hover {
  padding-left: 0.75rem;
  background-color: var(--color-hover-bg);
}

.sol-row:last-child {
  border-bottom: 1px solid var(--color-border);
}

.sol-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: rgba(22, 22, 15, 0.16);
  font-weight: 600;
  line-height: 1.15;
}

.sol-row h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #16160F;
  margin: 0;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Sol-row: tablet (2 colunas compactas) */
@media (max-width: 900px) {
  .sol-row {
    grid-template-columns: 42px 1fr;
    gap: 0.6rem 0.85rem;
    align-items: flex-start;
  }
  .sol-row p,
  .sol-row > :nth-child(3) {
    grid-column: 1 / -1;
  }
}

/* Sol-row: mobile (compacto com títulos limitados a no máximo 2 linhas) */
@media (max-width: 560px) {
  .sol-row {
    grid-template-columns: 32px 1fr;
    gap: 0.4rem 0.6rem;
    padding: 1.2rem 0;
    align-items: flex-start;
  }
  .sol-row:hover {
    padding-left: 0;
  }
  .sol-num {
    font-size: 1.35rem;
    line-height: 1.2;
  }
  .sol-row h3 {
    font-size: 0.98rem !important;
    line-height: 1.25 !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
  }
  .sol-row p {
    font-size: 0.86rem !important;
  }
}

/* --- FAQ Item --- */
.faq-item {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
}

.faq-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.faq-answer {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* --- Cards e Superfícies --- */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  border-color: rgba(22, 22, 15, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(22, 22, 15, 0.04);
}

.card-tag {
  display: inline-block;
  background-color: var(--color-tag-bg);
  color: var(--color-text-subtle);
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

/* --- Seletor de Idioma em Dropdown --- */
.lang-dropdown {
  position: relative;
  display: inline-block;
}

.lang-dropdown-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}

.lang-dropdown-btn:hover,
.lang-dropdown-btn:focus {
  background-color: var(--color-tag-bg);
  border-color: rgba(22, 22, 15, 0.25);
}

.lang-dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.4rem;
  background-color: var(--color-surface);
  min-width: 140px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(22, 22, 15, 0.12);
  z-index: 120;
  padding: 0.35rem 0;
}

.lang-dropdown:hover .lang-dropdown-content,
.lang-dropdown:focus-within .lang-dropdown-content,
.lang-dropdown.is-open .lang-dropdown-content {
  display: block;
}

.lang-dropdown-content a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.lang-dropdown-content a:hover,
.lang-dropdown-content a.active {
  background-color: var(--color-hover-bg);
  color: var(--color-text);
  font-weight: 600;
}

/* --- Header Global & Navegação Responsiva --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 242, 236, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: nowrap;
}

.site-logo-link {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo {
  height: 30px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.88rem;
  flex-shrink: 1;
  min-width: 0;
}

.site-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

/* Checkbox invisível para alternar menu mobile (Pure CSS Toggle) */
.menu-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* Botão Hamburger Mobile — oculto em desktop */
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  color: var(--color-text);
  font-size: 1.2rem;
  line-height: 1;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
  user-select: none;
}

.menu-toggle:hover {
  background-color: var(--color-tag-bg);
}

/* ==========================================================================
   MOBILE NAV (max-width: 880px)
   ========================================================================== */
@media (max-width: 880px) {
  .menu-toggle {
    display: inline-flex;
  }

  /* Header bar: logo à esquerda, ações à direita — SEMPRE em 1 linha */
  .header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }

  /* Logo e ações fixos na primeira linha */
  .site-logo-link {
    flex: 0 0 auto;
  }

  .header-actions {
    flex: 0 0 auto;
    margin-left: auto;
  }

  /* Nav expande para largura total na segunda linha */
  .site-nav {
    display: none;
    flex-basis: 100%;
    width: 100%;
    order: 10;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border-light);
    margin-top: 0.5rem;
  }

  .menu-checkbox:checked ~ .site-nav,
  .site-nav.is-active {
    display: flex !important;
  }

  .site-nav a {
    width: 100%;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.95rem;
    white-space: normal;
  }

  .site-nav a:last-child {
    border-bottom: none;
  }

  .mobile-cta {
    width: 100%;
    margin-top: 0.75rem;
    text-align: center;
    justify-content: center;
  }
}

/* --- Footer Global --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 3rem;
  background-color: var(--color-bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 850px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-bottom {
  border-top: 1px solid var(--color-border-light);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-subtle);
}

/* ==========================================================================
   6. REGRAS DE RESPONSIVIDADE PARA TODAS AS SECÇÕES DA HOMEPAGE
   ========================================================================== */

/* Breakpoint: Laptops & Tablets Landscape (<= 1024px) */
@media (max-width: 1024px) {
  :root {
    --container-pad: 1.25rem;
  }
  .section-padding {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
}

/* Breakpoint: Tablets Portrait & Telemóveis Grandes (<= 768px) */
@media (max-width: 768px) {
  :root {
    --container-pad: 1rem;
  }

  .section-padding {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  /* Ajustes de Layout para classes utilitárias */
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .sol-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 1.5rem 0;
  }

  .sol-num {
    font-size: 1.8rem;
  }

  /* ——— Homepage: Secções com inline grid que precisam de colapsar ——— */

  /* Hero: grid 1.1fr 0.9fr → coluna única */
  [style*="grid-template-columns:1.1fr 0.9fr"],
  [style*="grid-template-columns: 1.1fr 0.9fr"] {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  /* Contexto: grid 0.9fr 1.1fr → coluna única */
  [style*="grid-template-columns:0.9fr 1.1fr"],
  [style*="grid-template-columns: 0.9fr 1.1fr"] {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  /* Fundadores + Blog: grid repeat(2, 1fr) → coluna única */
  [style*="grid-template-columns:repeat(2, 1fr)"],
  [style*="grid-template-columns: repeat(2, 1fr)"] {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  /* Método: grid repeat(3, 1fr) → coluna única */
  [style*="grid-template-columns:repeat(3, 1fr)"],
  [style*="grid-template-columns: repeat(3, 1fr)"] {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  /* Hero banner: reduzir aspect-ratio em mobile */
  [style*="aspect-ratio:16/7"],
  [style*="aspect-ratio: 16/7"] {
    aspect-ratio: 16/9 !important;
  }

  /* Reduzir paddings nas secções inline */
  [style*="padding:6rem 1.5rem 4rem"],
  [style*="padding: 6rem 1.5rem 4rem"] {
    padding: 3.5rem 1rem 2.5rem !important;
  }

  [style*="padding:4.5rem 1.5rem"],
  [style*="padding: 4.5rem 1.5rem"] {
    padding: 3rem 1rem !important;
  }

  [style*="padding:5rem 1.5rem"],
  [style*="padding: 5rem 1.5rem"] {
    padding: 3rem 1rem !important;
  }

  /* CTA section escura: ajustar padding */
  [style*="padding:6rem 1.5rem; text-align:center"],
  [style*="padding: 6rem 1.5rem; text-align:center"] {
    padding: 3.5rem 1rem !important;
  }

  /* Botões do hero: alinhar ao início em mobile */
  [style*="justify-content:flex-end"],
  [style*="justify-content: flex-end"] {
    justify-content: flex-start !important;
  }

  /* Utilitários Visuais Mobile */
  .hide-mobile {
    display: none !important;
  }

  .show-mobile-only {
    display: block !important;
  }
}

/* Breakpoint: Telemóveis (<= 480px) */
@media (max-width: 480px) {
  .btn {
    width: 100%;
    min-height: 44px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Footer inline do index.html: empilhar */
  footer [style*="display:flex"][style*="justify-content:space-between"] {
    flex-direction: column !important;
    gap: 1.25rem !important;
    text-align: center !important;
  }
}

/* Visibilidade: garantir que show-mobile-only fica oculto em desktop */
@media (min-width: 769px) {
  .show-mobile-only {
    display: none !important;
  }
}