/* Custom Bootstrap Build - Only Used Components */

/* Bootstrap Variables */
:root {
  --bs-gutter-x: 1.5rem;
  --bs-gutter-y: 0;
}

/* Container System */
.container,
.container-fluid {
  width: 100%;
  padding-right: calc(var(--bs-gutter-x) * 0.5);
  padding-left: calc(var(--bs-gutter-x) * 0.5);
  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; }
}

@media (min-width: 1400px) {
  .container { max-width: 1320px; }
}

/* Grid System */
.row {
  --bs-gutter-x: 1.5rem;
  --bs-gutter-y: 0;
  display: flex;
  flex-wrap: wrap;
  margin-top: calc(-1 * var(--bs-gutter-y));
  margin-right: calc(-0.5 * var(--bs-gutter-x));
  margin-left: calc(-0.5 * var(--bs-gutter-x));
}

.row > * {
  flex-shrink: 0;
  width: 100%;
  max-width: 100%;
  padding-right: calc(var(--bs-gutter-x) * 0.5);
  padding-left: calc(var(--bs-gutter-x) * 0.5);
  margin-top: var(--bs-gutter-y);
}

.col {
  flex: 1 0 0%;
}

.col-12 {
  flex: 0 0 auto;
  width: 100%;
}

@media (min-width: 768px) {
  .col-md-2 { flex: 0 0 auto; width: 16.66666667%; }
  .col-md-3 { flex: 0 0 auto; width: 25%; }
  .col-md-6 { flex: 0 0 auto; width: 50%; }
  .col-md-7 { flex: 0 0 auto; width: 58.33333333%; }
}

@media (min-width: 992px) {
  .col-lg-3 { flex: 0 0 auto; width: 25%; }
  .col-lg-4 { flex: 0 0 auto; width: 33.33333333%; }
  .col-lg-8 { flex: 0 0 auto; width: 66.66666667%; }
}

/* Display Utilities */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }

@media (min-width: 768px) {
  .d-md-block { display: block !important; }
  .d-md-flex { display: flex !important; }
}

/* Gap Utilities */
.g-3 > * {
  padding-right: calc(1rem * 0.5);
  padding-left: calc(1rem * 0.5);
  margin-top: 1rem;
}

.g-4 > * {
  padding-right: calc(1.5rem * 0.5);
  padding-left: calc(1.5rem * 0.5);
  margin-top: 1.5rem;
}

/* Spacing */
.mb-3 { margin-bottom: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

/* Text Utilities */
.text-center { text-align: center !important; }
.text-muted { color: #6c757d !important; }

/* Background */
.bg-light { background-color: #f8f9fa !important; }

/* Button Base */
.btn {
  display: inline-block;
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  background-color: transparent;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  border-radius: 0.375rem;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

/* Form Controls */
.form-control, .form-select {
  display: block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: #212529;
  background-color: #fff;
  background-image: none;
  border: 1px solid #ced4da;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border-radius: 0.375rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus, .form-select:focus {
  color: #212529;
  background-color: #fff;
  border-color: #86b7fe;
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Tab Navigation */
.nav {
  display: flex;
  flex-wrap: wrap;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 0.5rem 1rem;
  color: #0d6efd;
  text-decoration: none;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

.nav-tabs {
  border-bottom: 1px solid #dee2e6;
}

.nav-tabs .nav-link {
  margin-bottom: -1px;
  background: none;
  border: 1px solid transparent;
  border-top-left-radius: 0.375rem;
  border-top-right-radius: 0.375rem;
}

.nav-tabs .nav-link.active {
  color: #495057;
  background-color: #fff;
  border-color: #dee2e6 #dee2e6 #fff;
}

/* Tab Content */
.tab-content > .tab-pane {
  display: none;
}

.tab-content > .active {
  display: block;
}

.fade {
  transition: opacity 0.15s linear;
}

.fade:not(.show) {
  opacity: 0;
}

.fade.show {
  opacity: 1;
}

/* Animation */
.fade-in {
  opacity: 1;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}