/* Box sizing */
*, *::before, *::after { box-sizing: border-box; }

/* Grid & Containers */
.container { width: 100%; padding-right: 15px; padding-left: 15px; margin-right: auto; margin-left: auto; }
@media (min-width: 576px) { .container { max-width: 540px; } }
@media (min-width: 768px) { .container { max-width: 720px; } }
@media (min-width: 992px) { .container { max-width: 960px; } }
@media (min-width: 1200px) { .container { max-width: 1140px; } }

.row { display: flex; flex-wrap: wrap; margin-right: -15px; margin-left: -15px; }
.col-6, .col-md-4, .col-md-5, .col-md-7 { position: relative; width: 100%; padding-right: 15px; padding-left: 15px; }
.col-6 { flex: 0 0 50%; max-width: 50%; }

@media (min-width: 768px) {
  .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-md-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
  .col-md-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
  .order-md-1 { order: 1; }
  .d-md-none { display: none !important; }
  .d-md-flex { display: flex !important; }
  .py-md-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
  .mb-md-0 { margin-bottom: 0 !important; }
  .text-md-right { text-align: right !important; }
}

/* Flex & Display */
.d-none { display: none !important; }
.d-flex { display: flex !important; }
.flex-column { flex-direction: column !important; }
.align-items-center { align-items: center !important; }

/* Spacing */
.m-0 { margin: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mr-4 { margin-right: 1.5rem !important; }
.px-0 { padding-left: 0 !important; padding-right: 0 !important; }
.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

/* Typography & Lists */
.h5 { font-size: 1.25rem; font-weight: 500; line-height: 1.2; margin-bottom: 0.5rem; }
.list-unstyled { padding-left: 0; list-style: none; }

/* Navbar & Collapse */
.navbar { position: relative; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.navbar-brand { display: inline-block; padding-top: 0.3125rem; padding-bottom: 0.3125rem; white-space: nowrap; }
.navbar-toggler { padding: 0.25rem 0.75rem; font-size: 1.25rem; line-height: 1; background: transparent; border: 1px solid rgba(255,255,255,0.1); border-radius: 0.25rem; cursor: pointer; }
.navbar-toggler-icon { display: inline-block; width: 1.5em; height: 1.5em; vertical-align: middle; content: ""; background: no-repeat center center; background-size: 100% 100%; background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.7%29' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
.navbar-collapse { flex-basis: 100%; flex-grow: 1; align-items: center; }
.collapse:not(.show) { display: none; }

/* Nav Links & Pills */
.nav { display: flex; flex-wrap: wrap; padding-left: 0; margin-bottom: 0; list-style: none; }
.nav-link { display: block; padding: 0.5rem 1rem; text-decoration: none; }

/* Buttons */
.btn { display: inline-block; font-weight: 400; text-align: center; vertical-align: middle; user-select: none; border: 1px solid transparent; padding: 0.375rem 0.75rem; font-size: 1rem; line-height: 1.5; border-radius: 0.25rem; text-decoration: none; cursor: pointer; }

/* Progress bar */
.progress { display: flex; height: 1rem; overflow: hidden; font-size: 0.75rem; background-color: #e9ecef; border-radius: 0.25rem; }
.progress-bar { display: flex; flex-direction: column; justify-content: center; overflow: hidden; color: #fff; text-align: center; white-space: nowrap; background-color: #007bff; transition: width 0.6s ease; }