:root {
  --primary: #0F4C81;
  --primary-hover: #0A365C;
  --secondary: #0284C7;
  --bg-main: #F8FAFC;
  --card-bg: #FFFFFF;
  --border-color: #E2E8F0;
  --text-dark: #0F172A;
  --text-muted: #64748B;
  --success-green: #16A34A;
  --success-bg: #F0FDF4;
  --danger-red: #DC2626;
  --danger-bg: #FEF2F2;
}

body {
  background-color: var(--bg-main);
  color: var(--text-dark);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  letter-spacing: -0.01em;
}

/* Navbar */
.navbar-clean {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
}

.brand-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-link-clean {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.nav-link-clean:hover, .nav-link-clean.active {
  color: var(--primary);
  background-color: #F1F5F9;
}

.nav-divider {
  width: 1px;
  height: 22px;
  background-color: var(--border-color);
  margin: 0 0.35rem;
}

.btn-portal-clean {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.84rem;
  font-weight: 500;
  color: #334155;
  background-color: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 6px;
  padding: 0.35rem 0.75rem;
  text-decoration: none;
  transition: all 0.18s ease-in-out;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.btn-portal-clean i {
  color: var(--primary);
  transition: transform 0.18s ease-in-out;
  line-height: 1;
}

.btn-portal-clean:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 2px 4px rgba(15, 76, 129, 0.15);
}

.btn-portal-clean:hover i {
  color: #FFFFFF !important;
  transform: translateX(-2px);
}

/* Cards & Containers */
.card-clean {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-clean-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title-clean {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  margin: 0;
}

/* Dropzone */
.dropzone-box {
  border: 2px dashed #CBD5E1;
  border-radius: 10px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  background-color: #FAFAFA;
  cursor: pointer;
  transition: all 0.2s ease;
}

.dropzone-box:hover, .dropzone-box.dragover {
  border-color: var(--primary);
  background-color: #F0F7FF;
}

/* Stat Cards */
.stat-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.2rem;
  text-align: center;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 0.25rem;
}

.stat-value-green {
  color: var(--success-green);
}

.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

/* Buttons */
.btn-primary-clean {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  transition: background-color 0.15s ease;
}

.btn-primary-clean:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #FFFFFF;
}

.btn-outline-clean {
  border: 1px solid var(--border-color);
  color: var(--text-dark);
  background: #FFFFFF;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
}

.btn-outline-clean:hover {
  background: #F1F5F9;
  color: var(--primary);
}

/* Badges */
.badge-clean {
  padding: 0.35rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success-clean {
  background-color: var(--success-bg);
  color: var(--success-green);
  border: 1px solid #BBF7D0;
}

.badge-danger-clean {
  background-color: var(--danger-bg);
  color: var(--danger-red);
  border: 1px solid #FECACA;
}

/* Form Controls */
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(15, 76, 129, 0.15);
}

/* Table Minimalist */
.table-clean th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: #F8FAFC;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem;
}

.table-clean td {
  padding: 0.75rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
}