/* Layout utilities replacing Bootstrap grid, modal, and collapse (no Bootstrap dependency). */

/* Sticky footer: always anchored to the bottom of the viewport on short pages */
html {
    height: 100%;
}

.site-layout {
    min-height: 100%;
    min-height: 100dvh;
}

.site-layout__shell {
    min-height: 0;
}

.site-layout__main {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    overflow-x: hidden;
}

.site-footer {
    flex-shrink: 0;
    margin-top: auto;
}

/* Containers */
.container-xl,
.container-fluid,
.container-wide {
    width: 100%;
    max-width: 100%;
    margin-inline: auto;
    padding-inline: 1rem;
}

.container-xl {
    max-width: 1320px;
}

.container-wide {
    max-width: 1440px;
}

@media (min-width: 640px) {
    .container-xl,
    .container-fluid,
    .container-wide {
        padding-inline: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container-xl,
    .container-fluid,
    .container-wide {
        padding-inline: 2rem;
    }
}

/* Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-inline: -0.75rem;
}

.row > * {
    padding-inline: 0.75rem;
}

.g-2 { --bs-gutter-x: 0.5rem; --bs-gutter-y: 0.5rem; margin-inline: calc(var(--bs-gutter-x) * -0.5); }
.g-3 { --bs-gutter-x: 1rem; --bs-gutter-y: 1rem; margin-inline: calc(var(--bs-gutter-x) * -0.5); }
.g-4 { --bs-gutter-x: 1.5rem; --bs-gutter-y: 1.5rem; margin-inline: calc(var(--bs-gutter-x) * -0.5); }
.g-2 > *, .g-3 > *, .g-4 > * {
    padding-inline: calc(var(--bs-gutter-x) * 0.5);
    margin-block-end: var(--bs-gutter-y);
}

.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

@media (min-width: 576px) {
    .col-sm-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
}

@media (min-width: 768px) {
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-md-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-md-12 { flex: 0 0 100%; max-width: 100%; }
}

@media (min-width: 992px) {
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
    .col-lg-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-lg-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
    .col-lg-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-lg-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-lg-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
}

@media (min-width: 1200px) {
    .col-xl-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-xl-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-xl-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
}

/* Display utilities */
.d-block { display: block !important; }
.d-grid { display: grid !important; }
.d-lg-block { display: none !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-shrink-0 { flex-shrink: 0 !important; }
.justify-content-between { justify-content: space-between !important; }
.ms-auto { margin-inline-start: auto !important; }
.text-decoration-none { text-decoration: none !important; }

@media (min-width: 992px) {
    .d-lg-block { display: block !important; }
}

/* Spacing */
.me-1 { margin-inline-end: 0.25rem !important; }
.me-2 { margin-inline-end: 0.5rem !important; }
.me-3 { margin-inline-end: 1rem !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }
.mb-6 { margin-bottom: 3.5rem !important; }
.mb-8 { margin-bottom: 4rem !important; }
.mb-10 { margin-bottom: 5rem !important; }
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }
.mt-6 { margin-top: 3.5rem !important; }
.px-1 { padding-inline: 0.25rem !important; }
.px-3 { padding-inline: 1rem !important; }
.px-4 { padding-inline: 1.5rem !important; }
.px-5 { padding-inline: 2rem !important; }
.px-6 { padding-inline: 2.5rem !important; }
.px-8 { padding-inline: 3rem !important; }
.px-12 { padding-inline: 4rem !important; }
.py-0 { padding-block: 0 !important; }
.py-3 { padding-block: 1rem !important; }
.py-5 { padding-block: 3rem !important; }
.py-6 { padding-block: 3.5rem !important; }
.py-10 { padding-block: 5rem !important; }

/* Typography */
.lead {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.display-4 { font-size: 2.5rem; font-weight: 700; line-height: 1.2; }
.display-5 { font-size: 2rem; font-weight: 700; line-height: 1.2; }
.display-6 { font-size: 1.75rem; font-weight: 700; line-height: 1.2; }

.small { font-size: 0.875rem; }

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1055;
    display: none;
    overflow-x: hidden;
    overflow-y: auto;
    outline: 0;
}

.modal.show {
    display: block;
}

.modal-open {
    overflow: hidden;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1050;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: 1.75rem auto;
    max-width: 500px;
    pointer-events: none;
}

.modal-dialog-centered {
    display: flex;
    align-items: center;
    min-height: calc(100% - 3.5rem);
}

.modal-lg {
    max-width: 800px;
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    pointer-events: auto;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--modern-card-radius, 1rem);
    box-shadow: var(--modern-shadow);
    outline: 0;
}

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

.modal-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: 1.25rem;
}

.modal-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border-color);
}

/* Collapse */
.collapse:not(.show) {
    display: none;
}

.collapsing {
    height: 0;
    overflow: hidden;
    transition: height 0.35s ease;
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: var(--modern-card-radius, 1rem);
    overflow: hidden;
    background: var(--card-bg);
}

.accordion-button {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: start;
    color: var(--text-primary);
    background: transparent;
    border: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.accordion-button:not(.collapsed) {
    color: var(--accent-primary);
}

.accordion-body {
    padding: 1rem 1.25rem 1.25rem;
}

/* Input group */
.input-group {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    width: 100%;
}

.input-group > .form-control {
    flex: 1 1 auto;
    min-width: 0;
}

.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Progress */
.progress {
    height: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}