/* ==========================================================================
   CATÁLOGO DE ESTOQUE - DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Modo Claro */
  --bg-canvas: #f0f2f5;
  --bg-surface: #ffffff;
  --bg-input: #f4f6f9;
  --bg-header: #dbeafe; 
  
  --border-color: #e0e0e0;
  --border-subtle: #f1f1f1;
  --border-focus: #3b82f6;

  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-muted: #737373;

  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;

  --whatsapp-color: #25D366; 
  --whatsapp-hover: #1ebd5c;

  --tag-family-bg: #e0f2fe;
  --tag-family-text: #0369a1;
  --tag-um-bg: #f3e8ff;
  --tag-um-text: #7e22ce;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 16px rgba(0, 0, 0, 0.12);
  --shadow-header: 0 2px 10px rgba(0, 0, 0, 0.05);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}

/* Modo Escuro */
[data-theme="dark"],
.dark-mode {
  --bg-canvas: #121212;
  --bg-surface: #1e1e1e;
  --bg-input: #2d2d2d;
  --bg-header: #1a2533; 

  --border-color: #333333;
  --border-subtle: #2a2a2a;
  --border-focus: #3b82f6;

  --text-primary: #e0e0e0;
  --text-secondary: #aaaaaa;
  --text-muted: #777777;

  --whatsapp-color: #25D366;
  --whatsapp-hover: #1ebd5c;

  --tag-family-bg: rgba(56, 189, 248, 0.15);
  --tag-family-text: #38bdf8;
  --tag-um-bg: rgba(192, 132, 252, 0.15);
  --tag-um-text: #c084fc;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.6);
  --shadow-header: 0 4px 15px rgba(0, 0, 0, 0.5);
}

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

html { font-family: var(--font-sans); background-color: var(--bg-canvas); color: var(--text-primary); line-height: 1.5; -webkit-font-smoothing: antialiased; }
body { min-height: 100vh; display: flex; flex-direction: column; transition: background-color 0.25s ease; }

/* HEADER FIXO ESTÁVEL */
.header-sticky {
  position: sticky; top: 0; z-index: 100;
  background-color: var(--bg-header); border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-header); transition: background-color 0.25s ease;
}

.header-container { max-width: 1440px; margin: 0 auto; padding: 10px 24px 8px 24px; transition: padding 0.3s ease; }

/* Desktop Layout */
.header-top { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; transition: all 0.3s ease; }

.brand-icon-wrapper { height: 65px; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; flex-shrink: 0; }
.brand-logo { height: 65px; width: auto; object-fit: contain; border-radius: 8px; }

.header-brand-texts { display: flex; flex-direction: column; justify-content: center; transition: all 0.3s ease; white-space: nowrap; flex-shrink: 0; }
.brand-title { font-size: 1.2rem; font-weight: 800; color: var(--text-primary); line-height: 1.1; }
.brand-subtitle { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; color: var(--text-muted); }

.search-wrapper { flex: 1; margin: 0; position: relative; transition: all 0.3s ease; }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.search-input {
  width: 100%; height: 42px; padding: 0 40px;
  font-size: 0.95rem; color: var(--text-primary);
  background-color: var(--bg-surface); border: 1px solid var(--border-color);
  border-radius: var(--radius-full); outline: none; transition: border 0.15s ease, box-shadow 0.2s ease;
}
.search-input:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); }
.search-clear-btn { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--text-muted); cursor: pointer; display: none; }

.header-actions { display: flex; align-items: center; gap: 12px; transition: all 0.3s ease; flex-shrink: 0; }
.header-actions-icons { display: flex; gap: 8px; }
.items-counter-badge { padding: 6px 12px; background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-full); font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); white-space: nowrap; }
.counter-num { color: var(--accent-color); font-weight: 700; }

.action-icon-btn {
  width: 40px; height: 40px; border-radius: 50%; background-color: var(--bg-surface);
  border: 1px solid var(--border-color); color: var(--text-primary); cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: background 0.2s, transform 0.2s; flex-shrink: 0;
}
.action-icon-btn:hover { background-color: var(--border-color); transform: scale(1.05); }

/* ====================================================
   AJUSTE MOBILE (Apenas para ecrãs pequenos)
   ==================================================== */
@media (max-width: 768px) {
  .header-container { padding: 10px 12px; }

  .header-top {
    display: grid !important;
    grid-template-columns: auto 1fr !important; /* Col 1: Logo, Col 2: Textos */
    grid-template-rows: auto auto auto !important; 
    gap: 12px 8px !important;
  }

  /* Linha 1 */
  .brand-icon-wrapper { grid-column: 1 !important; grid-row: 1 !important; height: 44px !important; }
  .brand-logo { height: 44px !important; }
  .header-brand-texts { grid-column: 2 !important; grid-row: 1 !important; text-align: left !important; padding-left: 8px !important; }

  /* Linha 2 (Ações: Esq, Centro, Dir) */
  .header-actions {
    grid-column: 1 / -1 !important; /* Ocupa tudo na horizontal */
    grid-row: 2 !important;
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 100% !important;
    padding: 0 !important;
  }
  
  /* Tamanhos ajustados no mobile */
  .action-icon-btn { width: 36px !important; height: 36px !important; }
  .items-counter-badge { margin: 0 auto !important; } /* Força o contador a ficar ao centro */

  /* Linha 3 (Busca) */
  .search-wrapper { grid-column: 1 / -1 !important; grid-row: 3 !important; margin: 0 !important; max-width: 100% !important; }
}

/* CARROSSEL DE FILTROS */
.filter-carousel-wrapper { 
  display: flex; align-items: center; gap: 8px; border-top: 1px solid var(--border-subtle); 
  padding-top: 6px; position: relative; overflow: hidden;
  max-height: 50px; opacity: 1; transition: max-height 0.25s ease-in-out, opacity 0.25s ease-in-out, padding 0.25s ease-in-out, border-color 0.25s ease-in-out; 
}
.carousel-arrow { width: 28px; height: 28px; border-radius: 50%; background-color: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: opacity 0.2s, background-color 0.2s; flex-shrink: 0; }
.carousel-arrow:hover { background-color: var(--border-color); }

.filter-categories-container { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; padding: 2px 0; flex: 1; scroll-behavior: smooth; }
.filter-categories-container::-webkit-scrollbar { display: none; }
.filter-btn { padding: 6px 16px; font-size: 0.8rem; font-weight: 600; white-space: nowrap; background-color: var(--bg-surface); color: var(--text-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-full); cursor: pointer; transition: all 0.2s, transform 0.2s, box-shadow 0.2s; }
.filter-btn:hover:not(.active) { border-color: var(--accent-color); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.filter-btn.active { background-color: var(--accent-color); color: #fff; border-color: var(--accent-color); }

/* COMPORTAMENTO SMART HEADER AO ROLAR PARA BAIXO */
body.scrolled-down .filter-carousel-wrapper { max-height: 0; opacity: 0; padding-top: 0; padding-bottom: 0; border-color: transparent; }

/* MEDIA QUERY: MOBILE - MUDANÇA TOTAL DE LAYOUT */
@media (max-width: 768px) {
  .header-container { padding: 10px 14px; }
  
  .header-top {
    display: grid;
    grid-template-columns: auto 1fr auto; /* Esquerda(Logo) | Centro(Textos) | Direita(Ações) */
    grid-template-rows: auto auto; /* Linha 1 (Infos) | Linha 2 (Busca) */
    gap: 12px 8px; /* Espaço vertical | horizontal */
    margin-bottom: 0;
  }

  /* Logo na Esquerda */
  .brand-icon-wrapper { grid-column: 1; grid-row: 1; height: 50px; }
  .brand-logo { height: 50px; }
  
  /* Textos no Centro */
  .header-brand-texts { grid-column: 2; grid-row: 1; align-items: center; text-align: center; }
  .brand-title { font-size: 1.15rem; }
  .brand-subtitle { font-size: 0.7rem; }
  
  /* Ações na Direita */
  .header-actions {
    grid-column: 3; grid-row: 1;
    flex-direction: column; align-items: flex-end; gap: 4px;
  }
  .header-actions-icons { gap: 6px; }
  .action-icon-btn { width: 34px; height: 34px; }
  .items-counter-badge { padding: 4px 8px; font-size: 0.75rem; }

  /* Busca ocupando a linha de baixo inteira */
  .search-wrapper { grid-column: 1 / -1; grid-row: 2; margin: 0; }

  /* Recolhimento ao Rolar */
  body.scrolled-down .brand-icon-wrapper,
  body.scrolled-down .header-brand-texts,
  body.scrolled-down .header-actions,
  body.scrolled-down .filter-carousel-wrapper {
    max-height: 0; opacity: 0; margin: 0; padding: 0; border-color: transparent; overflow: hidden;
  }
}

/* MAIN E GRID (4 cards no desktop) */
.main-content { flex: 1; max-width: 1440px; width: 100%; margin: 0 auto; padding: 24px; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }

/* DESIGN DO CARD */
.product-card { background-color: var(--bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--border-color); box-shadow: var(--shadow-card); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; }
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); border-color: var(--accent-color); }
.card-media-wrapper { position: relative; width: 100%; height: 200px; background-color: var(--bg-input); border-bottom: 1px solid var(--border-subtle); overflow: hidden; }
.image-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background-color: var(--bg-input); z-index: 1; }
.spinner-small { width: 28px; height: 28px; border: 3px solid var(--border-color); border-top-color: var(--accent-color); border-radius: 50%; animation: spin 0.8s linear infinite; }
.card-image { width: 100%; height: 100%; object-fit: contain; background-color: #ffffff; display: block; position: relative; z-index: 2; transition: opacity 0.3s; }

.card-body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.card-badges { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.badge { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; padding: 4px 8px; border-radius: 4px; }
.badge-family { background-color: var(--tag-family-bg); color: var(--tag-family-text); }
.badge-um { background-color: var(--tag-um-bg); color: var(--tag-um-text); }

.card-title-desc { font-size: 0.95rem; font-weight: 600; line-height: 1.4; color: var(--text-primary); margin-bottom: 16px; min-height: 2.8em; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* METADADOS */
.card-metadata { display: flex; justify-content: space-between; align-items: center; margin-top: auto; margin-bottom: 16px; gap: 8px; }
.meta-box { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.8rem; font-weight: 700; white-space: nowrap; }
.meta-box-codigo { background-color: #e0f2fe; color: #0284c7; }
.meta-box-local { background-color: #ffedd5; color: #c2410c; }
[data-theme="dark"] .meta-box-codigo { background-color: rgba(2, 132, 199, 0.2); color: #7dd3fc; border: 1px solid rgba(2, 132, 199, 0.3); }
[data-theme="dark"] .meta-box-local { background-color: rgba(194, 65, 12, 0.2); color: #fdba74; border: 1px solid rgba(194, 65, 12, 0.3); }

/* BOTÃO VERDE */
.whatsapp-action-btn { width: 100%; height: 42px; background-color: var(--whatsapp-color); color: #ffffff; border: none; border-radius: var(--radius-md); font-size: 0.9rem; font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; transition: background 0.2s; }
.whatsapp-action-btn:hover:not(:disabled) { background-color: var(--whatsapp-hover); }
.whatsapp-action-btn:disabled { background-color: #555; cursor: wait; opacity: 0.8; }

/* ESTADOS ESPECIAIS */
.loading-state, .empty-state { text-align: center; padding: 60px 20px; }
.spinner { width: 40px; height: 40px; border: 4px solid var(--border-color); border-top-color: var(--accent-color); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 20px auto; }
@keyframes spin { to { transform: rotate(360deg); } }
.state-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.state-desc { font-size: 0.9rem; color: var(--text-muted); }

.cloud-upload-overlay { position: fixed; inset: 0; background-color: rgba(0,0,0,0.8); backdrop-filter: blur(5px); display: flex; align-items: center; justify-content: center; z-index: 9999; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
.cloud-upload-overlay.active { opacity: 1; pointer-events: auto; }
.cloud-upload-card { background-color: var(--bg-surface); padding: 30px; border-radius: var(--radius-lg); text-align: center; max-width: 350px; width: 90%; border: 1px solid var(--border-color); }
.cloud-upload-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.cloud-progress-bar { width: 100%; height: 6px; background-color: var(--bg-input); border-radius: 10px; overflow: hidden; margin-top: 15px; }
.cloud-progress-fill { width: 100%; height: 100%; background: var(--whatsapp-color); animation: progressMove 1.5s infinite linear; }
@keyframes progressMove { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.toast-notification { position: fixed; bottom: 24px; right: 24px; background-color: var(--bg-surface); color: var(--text-primary); border: 1px solid var(--border-color); padding: 12px 20px; border-radius: var(--radius-md); box-shadow: 0 5px 15px rgba(0,0,0,0.3); font-weight: 600; font-size: 0.9rem; transform: translateY(100px); opacity: 0; transition: all 0.3s; z-index: 999; }
.toast-notification.show { transform: translateY(0); opacity: 1; }

@media (max-width: 768px) { .products-grid { grid-template-columns: repeat(auto-fill, minmax(100%, 1fr)); } }