/* ===========================================================================
   NegotiateHer — Course player
   Layers on top of style.css and reuses its tokens (--primary-color, etc).
   =========================================================================== */

:root {
    --sidebar-width: 340px;
    --course-header-height: 68px;
}

.course-body {
    background-color: var(--light-gray);
}

/* ------------------------------- Header -------------------------------- */

.course-header {
    position: sticky;
    top: 0;
    z-index: 60;
    height: var(--course-header-height);
    background-color: var(--white);
    border-bottom: 1px solid var(--medium-gray);
}

.course-header-inner {
    height: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.course-logo img {
    height: 34px;
    width: auto;
    display: block;
}

.course-progress-meter {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
}

.meter-track {
    width: 160px;
    height: 6px;
    border-radius: 999px;
    background-color: var(--medium-gray);
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background-color: var(--primary-color);
    transition: width 0.4s ease;
}

.meter-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dark-gray);
    min-width: 38px;
    text-align: right;
}

.lessons-toggle {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius);
    background-color: var(--white);
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
}

.lessons-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ------------------------------- Layout -------------------------------- */

.course-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    align-items: start;
    max-width: 1600px;
    margin: 0 auto;
}

/* ------------------------------ Sidebar -------------------------------- */

.course-sidebar {
    position: sticky;
    top: var(--course-header-height);
    height: calc(100vh - var(--course-header-height));
    display: flex;
    flex-direction: column;
    background-color: var(--white);
    border-right: 1px solid var(--medium-gray);
}

.sidebar-head {
    padding: 26px 24px 18px;
    border-bottom: 1px solid var(--medium-gray);
}

.sidebar-head h1 {
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text-color);
}

.sidebar-head p {
    margin-top: 6px;
    font-size: 0.85rem;
    color: #6c757d;
}

.lesson-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0 20px;
}

.nav-module + .nav-module {
    margin-top: 6px;
}

.nav-module-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 14px 24px 8px;
}

.nav-module-number {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-color);
}

.nav-module-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-color);
}

.nav-lesson {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 24px;
    border: 0;
    border-left: 3px solid transparent;
    background: none;
    font-family: var(--font-family);
    font-size: 0.9rem;
    text-align: left;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-lesson:hover {
    background-color: var(--light-gray);
}

.nav-lesson.is-active {
    background-color: var(--light-accent);
    border-left-color: var(--primary-color);
    font-weight: 600;
    color: var(--secondary-color);
}

.nav-lesson.is-locked {
    color: #adb5bd;
    cursor: not-allowed;
}

.nav-lesson.is-locked:hover {
    background: none;
}

.nav-lesson-icon {
    flex-shrink: 0;
    width: 17px;
    font-size: 0.95rem;
    color: #ced4da;
}

.nav-lesson.is-done .nav-lesson-icon {
    color: var(--success-color);
}

.nav-lesson.is-active .nav-lesson-icon {
    color: var(--primary-color);
}

.nav-lesson-text {
    flex: 1;
    min-width: 0;
}

.nav-lesson-duration {
    flex-shrink: 0;
    font-size: 0.76rem;
    color: #adb5bd;
    font-variant-numeric: tabular-nums;
}

.sidebar-foot {
    padding: 16px 24px 20px;
    border-top: 1px solid var(--medium-gray);
}

.sidebar-cert-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 0.87rem;
    font-weight: 600;
    color: var(--primary-color);
}

.sidebar-cert-link:hover {
    color: var(--secondary-color);
}

.link-button {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0;
    border: 0;
    background: none;
    font-family: var(--font-family);
    font-size: 0.84rem;
    color: #6c757d;
    cursor: pointer;
    transition: var(--transition);
}

.link-button:hover {
    color: var(--danger-color);
}

.sidebar-note {
    margin-top: 10px;
    font-size: 0.76rem;
    line-height: 1.5;
    color: #adb5bd;
}

/* -------------------------------- Main --------------------------------- */

.course-main {
    padding: 30px 34px 70px;
    min-width: 0;
}

.player-shell {
    max-width: 1100px;
}

.player-frame {
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: #000;
    box-shadow: var(--box-shadow);
}

.player-frame iframe,
.player-frame #player {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Placeholder + end card share the same full-bleed overlay treatment */
.player-placeholder,
.player-endcard {
    position: absolute;
    inset: 0;
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 24px;
    text-align: center;
    color: var(--white);
    background-color: #1a1024;
}

.player-placeholder[hidden],
.player-endcard[hidden] {
    display: none;
}

.player-placeholder i,
.player-endcard i {
    font-size: 2.4rem;
    margin-bottom: 6px;
    color: var(--accent-color);
}

.player-endcard i {
    color: var(--success-color);
}

.player-placeholder h3,
.player-endcard h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.player-placeholder p,
.player-endcard p {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.75);
}

.endcard-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 18px;
}

.player-endcard .btn-outline {
    border-color: rgba(255, 255, 255, 0.45);
    color: var(--white);
}

.player-endcard .btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: var(--white);
    color: var(--white);
}

/* ----------------------------- Lesson meta ----------------------------- */

.lesson-meta {
    max-width: 1100px;
    margin-top: 26px;
}

.lesson-eyebrow {
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--accent-color);
}

.lesson-meta h2 {
    margin-top: 6px;
    font-size: 1.7rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-color);
}

.lesson-module-desc {
    margin-top: 12px;
    max-width: 70ch;
    color: #495057;
}

.lesson-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
    padding-top: 24px;
    border-top: 1px solid var(--medium-gray);
}

.lesson-controls .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.lesson-controls .btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

#toggle-complete.is-done {
    border-color: var(--success-color);
    color: var(--success-color);
}

#toggle-complete.is-done:hover {
    background-color: var(--success-color);
    color: var(--white);
}

/* --------------------------- Completion card --------------------------- */

.course-done {
    max-width: 1100px;
    margin-top: 34px;
    padding: 34px;
    border-radius: var(--border-radius);
    background-color: var(--light-accent);
    text-align: center;
}

.course-done[hidden] {
    display: none;
}

.course-done i {
    font-size: 2.2rem;
    color: var(--primary-color);
}

.course-done h3 {
    margin-top: 12px;
    font-size: 1.4rem;
    font-weight: 600;
}

.course-done p {
    max-width: 55ch;
    margin: 10px auto 22px;
    color: #495057;
}

.course-done-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.course-done-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
}

/* ------------------------------ Responsive ----------------------------- */

.sidebar-scrim {
    position: fixed;
    inset: 0;
    z-index: 70;
    background-color: rgba(0, 0, 0, 0.45);
}

.sidebar-scrim[hidden] {
    display: none;
}

@media (max-width: 1024px) {
    .course-layout {
        grid-template-columns: 1fr;
    }

    .lessons-toggle {
        display: inline-flex;
    }

    .course-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        z-index: 80;
        /* Leave a comfortable strip of scrim to tap-to-close on narrow phones. */
        width: min(var(--sidebar-width), 80vw);
        height: 100vh;
        transform: translateX(-100%);
        transition: transform 0.28s ease;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.16);
    }

    .course-sidebar.is-open {
        transform: translateX(0);
    }

    .course-main {
        padding: 22px 20px 60px;
    }

    .meter-track {
        width: 96px;
    }
}

@media (max-width: 600px) {
    .course-header-inner {
        padding: 0 15px;
        gap: 12px;
    }

    .lessons-toggle span {
        display: none;
    }

    .lesson-meta h2 {
        font-size: 1.35rem;
    }

    .lesson-controls .btn {
        flex: 1 1 100%;
        justify-content: center;
    }
}

/* Respect reduced-motion for the sidebar slide and meter fill */
@media (prefers-reduced-motion: reduce) {
    .course-sidebar,
    .meter-fill {
        transition: none;
    }
}