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

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

:root {
  /* Paleta Minimalista - Azul Escuro */
  --primary: #1e3a5f;        /* Azul escuro principal */
  --primary-light: #2d5a8e;  /* Azul médio */
  --primary-lighter: #4a7ab8; /* Azul mais claro */
  --accent: #3b82f6;         /* Azul vibrante para destaques */
  --success: #059669;        /* Verde sutil */
  --danger: #dc2626;         /* Vermelho sutil */
  --warning: #d97706;        /* Laranja sutil */
  
  /* Neutros */
  --bg: #ffffff;             /* Fundo branco puro */
  --bg-secondary: #f9fafb;   /* Fundo secundário muito claro */
  --bg-blue-light: #f0f7ff;  /* Fundo azul muito claro */
  --bg-blue-soft: #e8f2ff;   /* Fundo azul suave */
  --card-bg: #ffffff;        /* Cards brancos */
  --text: #111827;           /* Texto principal quase preto */
  --text-secondary: #6b7280; /* Texto secundário cinza */
  --text-light: #9ca3af;     /* Texto claro */
  
  /* Bordas */
  --border: #e5e7eb;         /* Borda padrão sutil */
  --border-hover: #d1d5db;   /* Borda hover */
  --border-blue: #bfdbfe;    /* Borda azul suave */
  
  /* Sombras minimalistas */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header Minimalista */
header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: 32px 0;
  margin-bottom: 40px;
  box-shadow: var(--shadow-md);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.2s;
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 500;
}

.back-link:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.3);
}

header h1 {
  font-family: 'Inter', sans-serif;
  font-size: 28px;
  margin-bottom: 4px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: white;
}

header .subtitle {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
}

.header-nav {
  margin-top: 16px;
}

.header-nav .nav-link {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  transition: all 0.2s;
}

.header-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Course Selector */
.course-selector {
  background: var(--card-bg);
  padding: 24px;
  margin-bottom: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.course-selector label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text);
  font-size: 14px;
}

.course-selector select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  cursor: pointer;
  background-color: white;
  transition: all 0.2s ease;
  color: var(--text);
}

.course-selector select:hover {
  border-color: var(--border-hover);
}

.course-selector select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Loading */
.loading {
  text-align: center;
  padding: 64px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

.loading p {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 400;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Overview Stats */
.overview {
  margin-bottom: 40px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.stat-card {
  background: linear-gradient(135deg, white 0%, var(--bg-blue-light) 100%);
  padding: 24px;
  text-align: center;
  border: 2px solid var(--border-blue);
  border-radius: 8px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.stat-card:hover {
  box-shadow: var(--shadow);
}

.stat-card:nth-child(1) {
  border-top: 3px solid var(--primary);
}

.stat-card:nth-child(2) {
  border-top: 3px solid var(--accent);
}

.stat-card:nth-child(3) {
  border-top: 3px solid var(--success);
}

.stat-card h3 {
  font-size: 36px;
  margin-bottom: 8px;
  font-weight: 700;
  line-height: 1;
  color: var(--primary);
}

.stat-card p {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Cursos List */
#cursosEquivalentesSection {
  margin-bottom: 48px;
}

#cursosEquivalentesSection h2 {
  margin-bottom: 24px;
  color: var(--primary);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  padding: 12px 16px;
  background: linear-gradient(to right, var(--bg-blue-light), transparent);
  border-left: 4px solid var(--accent);
  border-radius: 4px;
}

.cursos-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.curso-item {
  background: var(--card-bg);
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  border-left: 4px solid var(--accent);
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.curso-item:hover {
  box-shadow: var(--shadow-md);
  border-left-color: var(--primary);
  background: var(--bg-blue-light);
}

.curso-item h4 {
  color: var(--text);
  font-size: 14px;
  margin-bottom: 12px;
  line-height: 1.5;
  font-weight: 500;
}

.curso-badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
}

/* Filters */
.filters {
  background: var(--card-bg);
  padding: 20px;
  margin-bottom: 32px;
  display: grid;
  grid-template-columns: auto 2fr 1fr;
  gap: 24px;
  align-items: end;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.toggle-container {
  display: flex;
  align-items: center;
}

.btn-toggle {
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.btn-toggle:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-toggle:active {
  transform: translateY(0);
}

.btn-toggle.inverted {
  background: linear-gradient(135deg, var(--success) 0%, #047857 100%);
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.filters label {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 500;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
}

.filters label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text);
  font-size: 14px;
}

.filters select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  cursor: pointer;
  background-color: white;
  transition: all 0.2s ease;
  color: var(--text);
}

.filters select:hover {
  border-color: var(--border-hover);
}

.filters select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Equivalencias Grid */
.equivalencias-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.equivalencia-item {
  background: var(--card-bg);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.equivalencia-item:hover {
  box-shadow: var(--shadow-md);
}

.equivalencia-header {
  background: linear-gradient(to right, var(--bg-blue-soft), var(--bg-blue-light));
  color: var(--primary);
  padding: 20px;
  border-bottom: 2px solid var(--border-blue);
}

.equivalencia-header h3 {
  font-size: 16px;
  margin-bottom: 12px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--primary);
}

.equivalencia-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid;
}

.badge-credits {
  background: #eff6ff;
  color: var(--accent);
  border-color: #bfdbfe;
}

.badge-language {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-color: var(--border);
}

.badge-mini {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 3px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  margin-left: 8px;
}

.badges-inline {
  display: inline-flex;
  gap: 6px;
  margin-top: 4px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 16px;
  margin: 0;
}

.equivalencia-body {
  padding: 24px;
}

.equivalencia-row {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.equivalencia-row:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.curso-instituicao-title {
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
  padding: 12px 16px;
  background: linear-gradient(to right, var(--bg-blue-light), var(--bg-secondary));
  font-size: 14px;
  border-radius: 6px;
  border-left: 4px solid var(--accent);
}

.disciplinas-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.disciplina-instituicao {
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--success);
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.6;
  transition: all 0.2s ease;
  color: var(--text);
}

.disciplina-instituicao:hover {
  background: var(--bg-secondary);
  border-left-width: 3px;
  box-shadow: var(--shadow-sm);
}

.sem-equivalentes {
  padding: 32px;
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
  font-style: italic;
}

.badge-no-equiv {
  background: #fef2f2;
  color: var(--danger);
  border-color: #fecaca;
}

/* ======================================
   UPLOAD SECTION
   ====================================== */
.upload-section {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
  border: 1px solid var(--border);
}

.upload-section h2 {
  color: var(--primary);
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: 600;
}

.upload-area {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.upload-area:hover {
  border-color: var(--accent);
  background: #eff6ff;
}

.upload-area.drag-over {
  border-color: var(--success);
  background: #f0fdf4;
}

.upload-content svg {
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.upload-content p {
  margin: 8px 0;
  color: var(--text);
  font-size: 14px;
}

.upload-content p strong {
  color: var(--primary);
  font-weight: 600;
}

.upload-hint {
  font-size: 13px;
  color: var(--text-light);
}

/* ======================================
   ACTION BUTTONS (Editar, Salvar, Cancelar)
   ====================================== */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-header h2 {
  margin: 0;
  flex: 1;
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  padding: 12px 16px;
  background: linear-gradient(to right, var(--bg-blue-light), transparent);
  border-left: 4px solid var(--accent);
  border-radius: 4px;
}

.action-buttons {
  display: flex;
  gap: 8px;
}

.btn {
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-edit {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-edit:hover {
  background: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.btn-save {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.btn-save:hover {
  background: #047857;
  box-shadow: var(--shadow-sm);
}

.btn-cancel {
  background: white;
  color: var(--text);
  border-color: var(--border);
}

.btn-cancel:hover {
  background: var(--bg-secondary);
  border-color: var(--border-hover);
}

/* ======================================
   MODO DE EDIÇÃO
   ====================================== */
.editing-mode .disciplina-instituicao.editable {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-right: 0.75rem;
  position: relative;
}

.disciplina-instituicao .disc-text {
  flex: 1;
}

.btn-remove {
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 4px;
  width: 24px;
  height: 24px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-remove:hover {
  background: #b91c1c;
}

.btn-add-disc {
  width: 100%;
  padding: 12px;
  background: var(--bg-secondary);
  border: 1px dashed var(--border);
  border-radius: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 8px;
}

.btn-add-disc:hover {
  background: #eff6ff;
  border-color: var(--accent);
  color: var(--accent);
}

/* Footer */
footer {
  margin-top: 64px;
  padding: 32px 0;
  text-align: center;
  background: var(--bg);
  color: var(--text-light);
  border-top: 1px solid var(--border);
}

footer p {
  font-size: 13px;
  font-weight: 400;
}

/* Responsive */
@media (max-width: 768px) {
  body {
    font-size: 14px;
  }
  
  .container {
    padding: 0 16px;
  }
  
  .filters {
    grid-template-columns: 1fr;
  }
  
  .stats {
    grid-template-columns: 1fr;
  }
  
  .cursos-list {
    grid-template-columns: 1fr;
  }
  
  header {
    padding: 24px 0;
  }
  
  header h1 {
    font-size: 24px;
  }
  
  header .subtitle {
    font-size: 13px;
  }
  
  .stat-card h3 {
    font-size: 32px;
  }
  
  .equivalencia-header h3 {
    font-size: 15px;
  }
  
  #cursosEquivalentesSection h2 {
    font-size: 18px;
  }
}
}