/* -------------------------------------------------------------
   Design System - Guia da Maternidade (Mobile-First)
   ------------------------------------------------------------- */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@500;600;700&display=swap');

:root {
  --bg-main: #FAF8F5;
  --bg-card: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --primary: #0D9488;
  --primary-hover: #0F766E;
  --primary-light: #CCFBF1;
  --accent-rose: #F43F5E;
  --accent-amber: #F59E0B;
  --accent-blue: #3B82F6;
  --accent-green: #10B981;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-main: #0F172A;
  --bg-card: #1E293B;
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --primary: #14B8A6;
  --primary-hover: #2DD4BF;
  --primary-light: rgba(20, 184, 166, 0.15);
  --border: #334155;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  padding-bottom: 90px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.25;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header & Sticky Bar */
.app-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.brand-title {
  font-size: 1.2rem;
  color: var(--text-main);
}

.theme-toggle {
  background: var(--primary-light);
  color: var(--primary);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}

.theme-toggle:hover {
  transform: scale(1.05);
}

/* Progress Tracker */
.progress-bar-container {
  padding: 8px 0 14px 0;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.progress-track {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent-green));
  border-radius: 4px;
  transition: width 0.4s ease-in-out;
}

/* Search Bar */
.search-container {
  margin: 16px 0;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 18px;
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 0 12px 0;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  white-space: nowrap;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  font-weight: 600;
}

/* Content Sections */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.section-icon {
  font-size: 24px;
}

.section-title {
  font-size: 1.25rem;
  color: var(--text-main);
}

/* Alert Boxes */
.callout {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin: 14px 0;
  font-size: 0.9rem;
  border-left: 4px solid;
}

.callout-important {
  background: rgba(13, 148, 136, 0.1);
  border-color: var(--primary);
  color: var(--text-main);
}

.callout-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--accent-amber);
  color: var(--text-main);
}

.callout-danger {
  background: rgba(244, 63, 94, 0.1);
  border-color: var(--accent-rose);
  color: var(--text-main);
}

/* Checklists */
.checklist-group {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-main);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.checklist-item:hover {
  border-color: var(--primary);
}

.checklist-item.checked {
  opacity: 0.65;
  background: rgba(16, 185, 129, 0.05);
  border-color: rgba(16, 185, 129, 0.3);
}

.checklist-item.checked .item-text {
  text-decoration: line-through;
}

.custom-checkbox {
  width: 22px;
  height: 22px;
  border: 2px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  transition: var(--transition);
}

.checklist-item.checked .custom-checkbox {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: #FFFFFF;
}

.item-text {
  font-size: 0.95rem;
  color: var(--text-main);
}

/* Image Card & Lightbox */
.guide-image-container {
  margin: 16px 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
}

.guide-image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.guide-image-container:hover .guide-image {
  transform: scale(1.02);
}

.image-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 8px 12px;
  background: var(--bg-main);
  font-style: italic;
}

/* Modal Lightbox */
.lightbox-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 20px;
  backdrop-filter: blur(5px);
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-content {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.5);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  color: #FFFFFF;
  font-size: 32px;
  cursor: pointer;
  background: none;
  border: none;
}

/* Tables */
.responsive-table {
  width: 100%;
  overflow-x: auto;
  margin: 16px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

/* Floating Emergency FAB */
.fab-emergency {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--accent-rose);
  color: #FFFFFF;
  border: none;
  padding: 12px 20px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 10px 20px rgba(244, 63, 94, 0.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 90;
  transition: var(--transition);
}

.fab-emergency:hover {
  transform: scale(1.05);
}

/* Utility */
.hidden {
  display: none !important;
}

@media (max-width: 600px) {
  .brand-title {
    font-size: 1.05rem;
  }
  .section-card {
    padding: 16px;
  }
  .fab-emergency {
    bottom: 16px;
    right: 16px;
    padding: 10px 16px;
  }
}