:root {
    --brand-primary: #0073cf;
    --brand-secondary: #005a9f;
    --brand-accent: #dceeff;
    --bs-primary: var(--brand-primary);
    --bs-primary-rgb: 0, 115, 207;
    --bs-danger: var(--brand-primary);
    --bs-danger-rgb: 0, 115, 207;
    --bs-info: var(--brand-primary);
    --bs-info-rgb: 0, 115, 207;
    --bs-link-color: var(--brand-primary);
    --bs-link-hover-color: var(--brand-secondary);
}

:root[data-color-theme="azul-suave"] {
    --brand-primary: #236fa3;
    --brand-secondary: #18577f;
    --brand-accent: #e1f1fc;
    --bs-primary-rgb: 35, 111, 163;
    --bs-danger-rgb: 35, 111, 163;
    --bs-info-rgb: 35, 111, 163;
}

body .navbar.fixed-top {
    background-color: var(--brand-primary) !important;
}

.navbar .navbar-brand,
.navbar .navbar-nav .nav-link,
.navbar .navbar-brand.text-danger,
.navbar .navbar-nav .nav-link.text-danger {
    color: #fff !important;
}

.navbar .navbar-brand:hover,
.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-item:hover > .nav-link {
    color: var(--brand-accent) !important;
}

.navbar .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.65);
}

.navbar .navbar-toggler-icon {
    filter: brightness(0) invert(1);
}

.navbar .dropdown-menu {
    background-color: #fff;
}

.navbar .dropdown-item {
    color: var(--brand-secondary);
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
    color: #fff;
    background-color: var(--brand-primary);
}

body .text-danger,
body .text-info {
    color: var(--brand-primary) !important;
}

body .bg-danger,
body .bg-info,
body .btn-danger,
body .btn-info {
    color: #fff !important;
    background-color: var(--brand-primary) !important;
    border-color: var(--brand-primary) !important;
}

body .btn-outline-danger {
    --bs-btn-color: var(--brand-primary);
    --bs-btn-border-color: var(--brand-primary);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--brand-primary);
    --bs-btn-hover-border-color: var(--brand-primary);
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: var(--brand-secondary);
    --bs-btn-active-border-color: var(--brand-secondary);
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}

.navbar .btn-outline-danger {
    color: #fff !important;
    border-color: #fff !important;
}

.navbar .btn-outline-danger:hover,
.navbar .btn-outline-danger:focus {
    color: var(--brand-primary) !important;
    background-color: #fff !important;
    border-color: #fff !important;
}

.theme-toggle {
    margin-left: 0.5rem;
    color: var(--brand-primary);
    background-color: #fff;
    border: 1px solid #fff;
    width: 2rem;
    height: 2rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover,
.theme-toggle:focus {
    color: #fff;
    background-color: var(--brand-secondary);
    border-color: #fff;
}

.navbar .theme-toggle {
    color: var(--brand-primary);
}

.navbar .theme-toggle:hover,
.navbar .theme-toggle:focus {
    color: #fff;
}

body .contact-info h4 {
    color: var(--brand-primary) !important;
}

body .motivational-message {
    color: #fff !important;
    background-color: var(--brand-primary) !important;
}

body [style*="#71C5CF" i] {
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary)) !important;
}

body [style*="#db3e3e" i] {
    background: linear-gradient(135deg, var(--brand-secondary), var(--brand-primary)) !important;
}

body .navbar-nav .nav-link:hover,
body .navbar-nav .nav-item:hover,
body .navbar-brand:hover,
body .dropdown-menu .dropdown-item:hover,
body .btn-outline-danger:hover {
    transition: color 0.2s ease-in-out, background-color 0.2s ease-in-out;
}

@media (max-width: 991.98px) {
    .theme-toggle {
        margin: 0.75rem 0 0;
    }

    .module-viewer {
        position: static;
    }
}

@media (max-width: 575.98px) {
    .course-exam-result {
        align-items: stretch;
        flex-direction: column;
    }
}

body .card:hover {
    box-shadow: 0 4px 8px rgba(0, 90, 159, 0.28);
}

.module-list {
    margin-bottom: 1.5rem;
}

.module-list-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0.25rem 0.25rem 0.75rem;
    border-bottom: 1px solid #e6edf3;
}

.module-list-heading p {
    margin: 0.2rem 0 0;
    color: #617286;
    font-size: 0.9rem;
}

.module-list-eyebrow {
    display: block;
    color: var(--brand-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.module-count {
    flex: 0 0 auto;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    color: var(--brand-secondary);
    background: var(--brand-accent);
    font-size: 0.8rem;
    font-weight: 700;
}

.module-select-card {
    position: relative;
    display: grid;
    grid-template-columns: minmax(5rem, 6rem) minmax(0, 1fr);
    overflow: hidden;
    border: 1px solid #e3eaf0;
    border-radius: 0.9rem;
    background: #fff;
    box-shadow: 0 2px 8px rgba(26, 54, 80, 0.06);
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.module-select-card:hover {
    border-color: var(--brand-primary);
    box-shadow: 0 8px 22px rgba(26, 88, 135, 0.13);
    transform: translateY(-2px);
}

.module-select-card:focus-visible {
    outline: 3px solid rgba(var(--bs-primary-rgb), 0.35);
    outline-offset: 3px;
}

.module-select-card.is-selected {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 2px rgba(var(--bs-primary-rgb), 0.14), 0 8px 22px rgba(26, 88, 135, 0.12);
}

.module-card-image {
    width: 100%;
    height: 100%;
    min-height: 9.5rem;
    object-fit: cover;
    background: #edf4f8;
}

.course-exam-card {
    border-color: rgba(var(--bs-primary-rgb), 0.28);
    background: linear-gradient(120deg, var(--brand-accent), #fff 58%);
}

.module-select-card.course-exam-card::after {
    content: "Iniciar evaluación  →";
}

.course-exam-icon {
    display: grid;
    min-height: 100%;
    place-items: center;
    color: var(--brand-primary);
    background: rgba(var(--bs-primary-rgb), 0.08);
    font-size: 2rem;
}

.course-exam {
    margin-top: 1.25rem;
    text-align: left;
}

.course-exam-instructions {
    margin-bottom: 1rem;
    color: #536477;
}

.course-exam-question {
    margin: 0 0 1rem;
    padding: 1rem;
    border: 1px solid #e3eaf0;
    border-radius: 0.8rem;
    background: #fff;
}

.course-exam-question legend {
    float: none;
    width: auto;
    margin: 0 0 0.75rem;
    color: #20364a;
    font-size: 1rem;
    font-weight: 700;
}

.course-exam-option {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin: 0.45rem 0;
    padding: 0.65rem 0.75rem;
    border: 1px solid #e7edf2;
    border-radius: 0.6rem;
    cursor: pointer;
}

.course-exam-option:has(input:checked) {
    border-color: var(--brand-primary);
    background: var(--brand-accent);
}

.course-exam-option input {
    flex: 0 0 auto;
    margin-top: 0.3rem;
    accent-color: var(--brand-primary);
}

.course-exam-question.is-correct {
    border-color: #198754;
}

.course-exam-question.is-incorrect {
    border-color: #dc3545;
}

.course-exam-feedback {
    margin: 0.75rem 0 0;
    color: #40566a;
    font-size: 0.92rem;
}

.course-exam-result {
    position: sticky;
    bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid #d4e1eb;
    border-radius: 0.8rem;
    background: #f7fafc;
    box-shadow: 0 4px 14px rgba(26, 54, 80, 0.08);
}

.course-exam-result p {
    margin: 0;
    color: #20364a;
    font-weight: 700;
}

.course-exam-submit {
    margin: 0.5rem 0 1rem;
}

.module-select-card .card-body {
    min-width: 0;
    padding: 0.9rem 0.9rem 2.6rem;
}

.module-select-card .card-title {
    margin-bottom: 0.55rem;
    color: var(--brand-secondary);
    font-size: 0.9rem;
    font-weight: 700;
}

.module-select-card .card-text {
    display: -webkit-box;
    overflow: hidden;
    color: #536477;
    font-size: 0.82rem;
    line-height: 1.45;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.module-select-card .card-text b {
    color: #263b4e;
}

.module-select-card::after {
    position: absolute;
    right: 0.9rem;
    bottom: 0.75rem;
    color: var(--brand-primary);
    content: "Abrir módulo  →";
    font-size: 0.78rem;
    font-weight: 700;
}

.module-viewer {
    position: sticky;
    top: 7rem;
    overflow: hidden;
    border: 1px solid #e2eaf1;
    border-radius: 1.1rem;
    box-shadow: 0 10px 32px rgba(24, 55, 82, 0.1);
}

.module-viewer > .card-body {
    padding: clamp(1rem, 2.5vw, 2rem);
}

.module-viewer-heading {
    margin-bottom: 1rem;
    text-align: left;
}

.module-viewer-heading .card-title {
    margin: 0.35rem 0 0;
    color: #20364a;
    font-size: clamp(1.4rem, 2.2vw, 2rem);
    font-weight: 700;
}

.module-viewer > .card-body > .card-text {
    color: #536477;
    line-height: 1.65;
    text-align: left;
}

.module-empty-state {
    display: grid;
    min-height: 18rem;
    align-content: center;
    justify-items: center;
    padding: 2rem;
    border: 1px dashed #cbd9e4;
    border-radius: 0.9rem;
    background: linear-gradient(145deg, #f7fafc, #edf5fa);
    text-align: center;
}

.module-empty-state > i {
    margin-bottom: 1rem;
    color: var(--brand-primary);
    font-size: 3rem;
}

.module-empty-state p {
    max-width: 28rem;
    margin: 0 0 0.5rem;
    color: #263b4e;
    font-size: 1.15rem;
    font-weight: 700;
}

.module-empty-state span {
    color: #617286;
}

#moduleCarousel {
    overflow: hidden;
    border-radius: 0.9rem;
    background: #f1f5f8;
}

#moduleCarousel .carousel-item {
    height: min(68vh, 650px);
    min-height: 19rem;
}

#moduleCarousel .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

#moduleCarousel .carousel-control-prev,
#moduleCarousel .carousel-control-next {
    width: 3.5rem;
    opacity: 1;
}

#moduleCarousel .carousel-control-prev-icon,
#moduleCarousel .carousel-control-next-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: rgba(20, 43, 62, 0.62);
    background-size: 45%;
}

@media (max-width: 767.98px) {
    .module-viewer {
        position: static;
    }

    #moduleCarousel .carousel-item {
        height: min(58vh, 560px);
        min-height: 16rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .module-select-card {
        transition: none;
    }
}