/* =========================
   MODAL ROOT
========================= */

.na-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
}

.na-modal.is-open {
    display: block;
}


/* =========================
   MODAL BACKDROP
========================= */

.na-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.62);
    backdrop-filter: blur(4px);
}


/* =========================
   MODAL DIALOG
========================= */

.na-modal__dialog {
    position: relative;
    width: min(980px, 92vw);
    max-height: 85vh;

    margin: 5vh auto 0;
    border-radius: 20px;

    background: #ffffff;
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.30);

    display: flex;
    flex-direction: column;
    overflow: hidden;

    transform: translateY(10px);
    opacity: 0;
    transition: transform 180ms ease, opacity 180ms ease;
}

.na-modal.is-open .na-modal__dialog {
    transform: translateY(0);
    opacity: 1;
}


/* =========================
   MODAL CLOSE BUTTON
========================= */

.na-modal__close {
    position: absolute;
    top: 14px;
    right: 14px;

    width: 40px;
    height: 40px;

    border-radius: 12px;
    border: 2px solid var(--na-icon-color);

    background: transparent;
    color: var(--na-icon-color);

    font-size: 18px;
    font-weight: 900;
    line-height: 1;

    cursor: pointer;

    display: flex;
    align-items: center;
    justify-content: center;

    transition:
        background 0.15s ease,
        color 0.15s ease,
        transform 0.15s ease;
}

.na-modal__close:hover {
    background: var(--na-icon-color);
    color: #ffffff;
    transform: translateY(-1px);
}


/* =========================
   MODAL HEADER
========================= */

.na-modal__header {
    padding: 26px 24px 14px;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.na-modal__title {
    margin: 0 40px 8px 0;
}

.na-modal__subtitle {
    margin: 0;
    color: rgba(15, 23, 42, 0.68);
    line-height: 1.5;
}


/* =========================
   MODAL LEVEL THEMING
========================= */

.modal--beginner .na-modal__header {
    background: var(--level-beginner-bg);
    color: var(--level-beginner);
}

.modal--intermediate .na-modal__header {
    background: var(--level-intermediate-bg);
    color: var(--level-intermediate);
}

.modal--advanced .na-modal__header {
    background: var(--level-advanced-bg);
    color: var(--level-advanced);
}


/* =========================
   MODAL BODY
========================= */

.na-modal__body {
    padding: 20px 24px 24px;
    overflow: auto;
    scroll-behavior: smooth;
}


/* =========================
   MODAL CONTENT WRAPPER
========================= */

.course-modal-content {
    display: flex;
    flex-direction: column;
    gap: 28px;
}


/* =========================
   MODAL INFO GRID
========================= */

.course-modal-info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 16px;
}


/* =========================
   MODAL INFO CARD
========================= */

.course-modal-info-card {
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 16px;
    background: #f8fafc;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.course-modal-info-card__inner {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 88px;
    padding: 16px 18px;
}

.course-modal-info-card__text {
    min-width: 0;
}

.course-modal-info-card__label {
    margin-bottom: 4px;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    text-transform: uppercase;
    color: rgba(15, 23, 42, 0.56);
}

.course-modal-info-card__value {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.35;
    color: #0f172a;
}

.course-modal-info-card {
    transition:
        transform 0.16s ease,
        box-shadow 0.16s ease,
        border-color 0.16s ease;
}

.course-modal-info-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.06);
    border-color: rgba(15, 23, 42, 0.18);
}

.course-modal-info-card:hover .course-modal-info-card__label {
    color: rgba(15, 23, 42, 0.75);
}


/* =========================
   MODAL SECTIONS
========================= */

.course-modal-section {
    padding-bottom: 22px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.course-modal-section:last-child {
    padding-bottom: 0;
    border-bottom: none;
}

.course-modal-section__heading {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.course-modal-section__title {
    margin: 0;
    font-size: 1.02rem;
    font-weight: 800;
    line-height: 1.3;
    color: #0f172a;
}

.course-modal-section p {
    margin: 0 0 10px;
    line-height: 1.65;
    color: rgba(15, 23, 42, 0.88);
}

.course-modal-section p:last-child {
    margin-bottom: 0;
}

.course-modal-section ul {
    margin: 0;
    padding-left: 22px;
    color: rgba(15, 23, 42, 0.88);
}

.course-modal-section li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.course-modal-section li:last-child {
    margin-bottom: 0;
}

.course-modal-section {
    transition:
        background 0.18s ease,
        transform 0.18s ease;
}

.course-modal-section:hover {
    background: rgba(15, 23, 42, 0.025);
    transform: translateY(-1px);
}

.course-modal-section:hover .course-modal-section__title {
    color: var(--na-icon-color);
}

/* =========================
   MODAL ICONS
========================= */

.course-modal-icon {
    width: 22px;
    height: 22px;
    flex: 0 0 22px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    opacity: 0.92;
    color: var(--na-icon-color);
}

.course-modal-icon img,
.course-modal-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}


/* =========================
   MODAL LEVEL ICON
========================= */

.course-modal-icon--level {
    width: 22px;
    height: 22px;
    flex: 0 0 22px;
}

.course-modal-level-icon {
    width: 100%;
    height: 100%;
    display: block;
    overflow: visible;
}

.course-modal-icon--level.course-modal-icon--beginner {
    color: var(--level-beginner);
}

.course-modal-icon--level.course-modal-icon--intermediate {
    color: var(--level-intermediate);
}

.course-modal-icon--level.course-modal-icon--advanced {
    color: var(--level-advanced);
}

.course-modal-icon--level .bat-bar {
    fill: currentColor;
    opacity: 0.18;
    transition: opacity 0.15s ease;
}

.course-modal-icon--beginner .bat-bar--1 {
    opacity: 1;
}

.course-modal-icon--intermediate .bat-bar--1,
.course-modal-icon--intermediate .bat-bar--2 {
    opacity: 1;
}

.course-modal-icon--advanced .bat-bar--1,
.course-modal-icon--advanced .bat-bar--2,
.course-modal-icon--advanced .bat-bar--3 {
    opacity: 1;
}


/* =========================
   MODAL FOOTER
========================= */

.na-modal__footer {
    padding: 16px 24px 20px;
    border-top: 1px solid rgba(15, 23, 42, 0.08);

    display: flex;
    justify-content: flex-end;
    gap: 10px;
}


/* =========================
   MODAL INTERACTION
========================= */

body.modal-open {
    overflow: hidden;
}


/* =========================
   TABLET
========================= */

@media (max-width: 760px) {
    .na-modal__dialog {
        width: min(94vw, 820px);
    }

    .course-modal-info-grid {
        grid-template-columns: 1fr;
    }

    .course-modal-info-card__inner {
        min-height: 80px;
    }
}


/* =========================
   MOBILE
========================= */

@media (max-width: 520px) {
    .na-modal__dialog {
        width: 94vw;
        max-height: 88vh;
        margin-top: 3vh;
        border-radius: 16px;
    }

    .na-modal__header {
        padding: 22px 18px 12px;
    }

    .na-modal__body {
        padding: 16px 18px 20px;
    }

    .na-modal__footer {
        padding: 14px 18px 18px;
        justify-content: stretch;
        flex-direction: column;
    }

    .na-modal__footer > * {
        width: 100%;
    }

    .na-modal__close {
        top: 10px;
        right: 10px;
    }

    .course-modal-content {
        gap: 24px;
    }

    .course-modal-info-grid {
        gap: 12px;
    }

    .course-modal-info-card__inner {
        padding: 14px 14px;
        gap: 12px;
        min-height: 74px;
    }

    .course-modal-info-card__label {
        font-size: 0.78rem;
    }

    .course-modal-info-card__value {
        font-size: 0.96rem;
    }

    .course-modal-section {
        padding-bottom: 18px;
    }

    .course-modal-section__heading {
        gap: 10px;
        margin-bottom: 10px;
    }

    .course-modal-section__title {
        font-size: 0.98rem;
    }

    .course-modal-section ul {
        padding-left: 20px;
    }
}