/* ═══════════════════════════════════════════
   Rebreathology — Dark Ocean Blue Theme
   Colors: #0077B6 primary, #00B4D8 highlight, #CAF0F8 light accents
   ═══════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
    --rb-primary: #0077B6;
    --rb-highlight: #00B4D8;
    --rb-light-accent: #CAF0F8;
    --rb-dark: #0a0e17;
    --rb-darker: #060a12;
    --rb-card: #111827;
    --rb-card-hover: #1a2332;
    --rb-border: #1e293b;
    --rb-text: #e2e8f0;
    --rb-text-muted: #94a3b8;
}

/* ── Base ── */
body {
    background-color: var(--rb-dark);
    color: var(--rb-text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

a {
    color: var(--rb-highlight);
    transition: color 0.2s ease;
}

a:hover {
    color: var(--rb-light-accent);
}

::selection {
    background-color: var(--rb-primary);
    color: #fff;
}

/* ── Background Utilities ── */
.bg-dark {
    background-color: var(--rb-dark) !important;
}

.bg-darker {
    background-color: var(--rb-darker) !important;
}

.bg-card {
    background-color: var(--rb-card) !important;
}

/* ── Text Utilities ── */
.text-accent {
    color: var(--rb-highlight) !important;
}

.text-primary-accent {
    color: var(--rb-primary) !important;
}

.text-light-accent {
    color: var(--rb-light-accent) !important;
}

/* ── Button Styles ── */
.btn-primary-accent {
    background-color: var(--rb-primary);
    border-color: var(--rb-primary);
    color: #fff;
}

.btn-primary-accent:hover,
.btn-primary-accent:focus {
    background-color: #006199;
    border-color: #006199;
    color: #fff;
}

.btn-highlight {
    background-color: var(--rb-highlight);
    border-color: var(--rb-highlight);
    color: #000;
}

.btn-highlight:hover,
.btn-highlight:focus {
    background-color: #009db8;
    border-color: #009db8;
    color: #000;
}

.btn-outline-accent {
    border-color: var(--rb-highlight);
    color: var(--rb-highlight);
}

.btn-outline-accent:hover,
.btn-outline-accent:focus {
    background-color: var(--rb-highlight);
    border-color: var(--rb-highlight);
    color: #000;
}

.btn-outline-secondary {
    border-color: var(--rb-border);
    color: var(--rb-text-muted);
}

.btn-outline-secondary:hover {
    background-color: var(--rb-card);
    border-color: var(--rb-highlight);
    color: var(--rb-highlight);
}

.bg-primary-accent {
    background-color: var(--rb-primary) !important;
}

/* ── Navbar ── */
.site-header {
    z-index: 1030;
}

.navbar-dark .navbar-nav .nav-link {
    color: var(--rb-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    transition: color 0.2s ease;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
    color: var(--rb-highlight);
}

.dropdown-menu-dark {
    background-color: var(--rb-card);
    border: 1px solid var(--rb-border);
}

.dropdown-item:hover {
    background-color: var(--rb-card-hover);
}

/* ── Hero Section ── */
.hero-section {
    background: linear-gradient(135deg, var(--rb-darker) 0%, #0a1628 50%, #0d1b30 100%);
    position: relative;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 70% 50%, rgba(0, 119, 182, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 30% 80%, rgba(0, 180, 216, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-graphic {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.min-vh-50 {
    min-height: 50vh;
}

/* ── Cards ── */
.card.bg-card {
    background-color: var(--rb-card);
    border: 1px solid var(--rb-border);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card.bg-card:hover {
    transform: translateY(-4px);
    border-color: var(--rb-primary);
    box-shadow: 0 8px 25px rgba(0, 119, 182, 0.15);
}

.card-img-wrapper {
    overflow: hidden;
    aspect-ratio: 16 / 11;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card.bg-card:hover .card-img-wrapper img {
    transform: scale(1.05);
}

.card-img-placeholder {
    aspect-ratio: 16 / 11;
    background: linear-gradient(135deg, var(--rb-card) 0%, var(--rb-card-hover) 100%);
}

.card-footer {
    border-color: var(--rb-border) !important;
}

/* ── Filter Bar ── */
.filter-bar {
    background-color: var(--rb-dark);
}

.filter-btn {
    border-radius: 20px;
    font-size: 0.8rem;
    padding: 0.35rem 0.9rem;
}

/* ── Section Header ── */
.section-header {
    border-bottom: 1px solid var(--rb-border);
}

/* ── How It Works ── */
.step-icon {
    position: relative;
    display: inline-block;
}

.step-number {
    position: absolute;
    top: -5px;
    right: -10px;
    background-color: var(--rb-primary);
    color: #fff;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ── CTA Section ── */
.cta-section {
    background: linear-gradient(135deg, var(--rb-card) 0%, #0d1b30 100%);
    border: 1px solid var(--rb-border);
}

/* ── Content Body ── */
.content-body {
    line-height: 1.8;
}

.content-body h2,
.content-body h3,
.content-body h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--rb-light-accent);
}

.content-body p {
    margin-bottom: 1.2rem;
    color: var(--rb-text);
}

.content-body img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 1rem 0;
}

.content-body code {
    background-color: var(--rb-card);
    padding: 0.2em 0.4em;
    border-radius: 0.25rem;
    color: var(--rb-highlight);
    font-size: 0.875em;
}

.content-body pre {
    background-color: var(--rb-card);
    border: 1px solid var(--rb-border);
    border-radius: 0.5rem;
    padding: 1.25rem;
    overflow-x: auto;
}

.content-body pre code {
    background: none;
    padding: 0;
}

.content-body blockquote {
    border-left: 4px solid var(--rb-primary);
    padding-left: 1.25rem;
    margin: 1.5rem 0;
    color: var(--rb-text-muted);
    font-style: italic;
}

.content-body ul,
.content-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.2rem;
}

.content-body li {
    margin-bottom: 0.5rem;
}

.content-body table {
    width: 100%;
    margin-bottom: 1.5rem;
}

.content-body table th,
.content-body table td {
    padding: 0.75rem;
    border: 1px solid var(--rb-border);
}

.content-body table th {
    background-color: var(--rb-card);
    color: var(--rb-light-accent);
}

/* ── Tables ── */
.table-dark {
    --bs-table-bg: transparent;
    --bs-table-border-color: var(--rb-border);
}

/* ── Part Preview ── */
.part-preview {
    border: 1px solid var(--rb-border);
}

.part-preview img {
    display: block;
}

/* ── Specs Table ── */
.specs-table .table {
    margin-bottom: 0;
}

.specs-table .table td {
    padding: 0.6rem 0.75rem;
    vertical-align: middle;
}

/* ── Download Section ── */
.download-section {
    border: 1px solid var(--rb-border);
}

/* ── Footer ── */
.site-footer {
    border-top: 1px solid var(--rb-border);
}

.footer-link:hover {
    color: var(--rb-highlight) !important;
}

/* ── Pagination ── */
.pagination {
    --bs-pagination-bg: var(--rb-card);
    --bs-pagination-border-color: var(--rb-border);
    --bs-pagination-color: var(--rb-text-muted);
    --bs-pagination-hover-bg: var(--rb-card-hover);
    --bs-pagination-hover-border-color: var(--rb-primary);
    --bs-pagination-hover-color: var(--rb-highlight);
    --bs-pagination-active-bg: var(--rb-primary);
    --bs-pagination-active-border-color: var(--rb-primary);
    --bs-pagination-active-color: #fff;
    --bs-pagination-disabled-bg: var(--rb-darker);
    --bs-pagination-disabled-border-color: var(--rb-border);
    --bs-pagination-disabled-color: var(--rb-text-muted);
}

.page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem 0.75rem;
    margin: 0 0.15rem;
    border-radius: 0.375rem;
    background-color: var(--rb-card);
    border: 1px solid var(--rb-border);
    color: var(--rb-text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
}

.page-numbers:hover {
    background-color: var(--rb-card-hover);
    border-color: var(--rb-primary);
    color: var(--rb-highlight);
}

.page-numbers.current {
    background-color: var(--rb-primary);
    border-color: var(--rb-primary);
    color: #fff;
}

/* ── Breadcrumbs ── */
.breadcrumb-item + .breadcrumb-item::before {
    color: var(--rb-text-muted);
}

/* ── Forms (Search) ── */
.form-control.bg-card {
    background-color: var(--rb-card);
    border-color: var(--rb-border);
    color: var(--rb-text);
}

.form-control.bg-card::placeholder {
    color: var(--rb-text-muted);
}

.form-control.bg-card:focus {
    background-color: var(--rb-card-hover);
    border-color: var(--rb-primary);
    color: var(--rb-text);
    box-shadow: 0 0 0 0.2rem rgba(0, 119, 182, 0.25);
}

/* ── Badges ── */
.badge {
    font-weight: 500;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--rb-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--rb-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--rb-primary);
}

/* ── Responsive ── */
@media (max-width: 991.98px) {
    .hero-section .display-3 {
        font-size: 2.5rem;
    }

    .filter-bar .d-flex {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }

    .filter-btn {
        white-space: nowrap;
    }
}

@media (max-width: 767.98px) {
    .hero-section .display-3 {
        font-size: 2rem;
    }

    .hero-section .lead {
        font-size: 1rem;
    }

    .card-img-wrapper {
        aspect-ratio: 16 / 9;
    }
}

/* ── WordPress-specific overrides ── */
.wp-block-image img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
}

.wp-block-quote {
    border-left: 4px solid var(--rb-primary);
    padding-left: 1.25rem;
    color: var(--rb-text-muted);
}

.wp-block-code {
    background-color: var(--rb-card);
    border: 1px solid var(--rb-border);
    border-radius: 0.5rem;
    padding: 1.25rem;
}

/* ── Widget Styles ── */
.widget {
    color: var(--rb-text-muted);
}

.widget a {
    color: var(--rb-text-muted);
    text-decoration: none;
}

.widget a:hover {
    color: var(--rb-highlight);
}

.widget ul {
    list-style: none;
    padding-left: 0;
}

.widget li {
    padding: 0.35rem 0;
}

/* ── Post Navigation Links ── */
.post-navigation a,
.posts-navigation a {
    color: var(--rb-highlight);
    text-decoration: none;
}

.post-navigation a:hover,
.posts-navigation a:hover {
    color: var(--rb-light-accent);
}