/*
 * Shared lesson presentation guardrails.
 *
 * This file is intentionally loaded after lesson-family styles. It keeps the
 * established CodeQuest dark teal/green system consistent and lets content determine
 * card height without replacing the specialist lesson renderers.
 */
.lesson-page {
    --lesson-accent: var(--cq-green, #66d9ad);
    --lesson-accent-soft: rgba(102, 217, 173, 0.1);
    --lesson-panel: var(--cq-surface, #0b1a20);
    --lesson-panel-deep: #071419;
    --lesson-line: var(--cq-border, rgba(132, 183, 190, 0.24));
    --lesson-warm: var(--cq-amber, #edc768);
    --lesson-good: var(--cq-green, #78d39c);
    --lesson-bad: var(--cq-red, #ef8b82);
}

/* One semantic palette across every lesson family. */
.storage-campaign-lesson {
    --storage-cyan: var(--lesson-accent);
    --storage-violet: var(--lesson-accent);
    --storage-amber: var(--lesson-warm);
    --storage-panel: var(--lesson-panel);
    --storage-line: var(--lesson-line);
}

.data-representation-lesson {
    --data-accent: var(--lesson-accent);
    --data-accent-2: var(--lesson-accent);
    --data-panel: var(--lesson-panel);
    --data-line: var(--lesson-line);
}

.compression-decision-lesson {
    --compression-cyan: var(--lesson-accent);
    --compression-lime: var(--lesson-good);
    --compression-amber: var(--lesson-warm);
    --compression-ink: var(--lesson-panel-deep);
    --compression-panel: var(--lesson-panel);
    --compression-line: var(--lesson-line);
}

.cpu-architecture-lesson {
    --cpu-cyan: var(--lesson-accent);
    --cpu-violet: var(--lesson-accent);
    --cpu-lime: var(--lesson-good);
    --cpu-amber: var(--lesson-warm);
    --cpu-panel: var(--lesson-panel);
    --cpu-line: var(--lesson-line);
}

.performance-embedded-lesson {
    --pe-cyan: var(--lesson-accent);
    --pe-violet: var(--lesson-accent);
    --pe-lime: var(--lesson-good);
    --pe-amber: var(--lesson-warm);
    --pe-panel: var(--lesson-panel);
    --pe-line: var(--lesson-line);
}

.networking-lesson {
    --nw-cyan: var(--lesson-accent);
    --nw-violet: var(--lesson-accent);
    --nw-lime: var(--lesson-good);
    --nw-amber: var(--lesson-warm);
    --nw-coral: var(--lesson-bad);
    --nw-panel: var(--lesson-panel);
    --nw-line: var(--lesson-line);
}

.threat-lesson,
.threat-campaign {
    --threat-accent: var(--lesson-accent);
    --threat-warn: var(--lesson-warm);
    --threat-panel: var(--lesson-panel);
    --threat-line: var(--lesson-line);
}

.memory-core,
.memory-core--violet,
.memory-core--amber {
    --mc: var(--lesson-accent);
}

.memory-race {
    --memory-cyan: var(--lesson-accent);
    --memory-green: var(--lesson-good);
    --memory-amber: var(--lesson-warm);
    --memory-red: var(--lesson-bad);
}

.j223-lab,
.j223-lab--file_control,
.j223-lab--record_bay,
.j223-lab--query_vault,
.j223-lab--simulation_core {
    --j223-accent: var(--lesson-accent);
}

.concept-experience,
.signature-experience {
    --concept-accent: var(--lesson-accent);
    --concept-accent-soft: var(--lesson-accent-soft);
    --signature-accent: var(--lesson-accent);
    --signature-soft: var(--lesson-accent-soft);
    --signature-warm: var(--lesson-warm);
    --signature-good: var(--lesson-good);
    --signature-bad: var(--lesson-bad);
}

.lesson-page .eyebrow,
.role-teacher .lesson-page .eyebrow,
.role-school_admin .lesson-page .eyebrow {
    color: var(--lesson-accent);
}

.role-teacher .lesson-page .card-action:not(.is-secondary):not(.is-disabled):not(:disabled),
.role-school_admin .lesson-page .card-action:not(.is-secondary):not(.is-disabled):not(:disabled) {
    border-color: var(--lesson-accent);
    background: var(--lesson-accent);
    color: #041014;
}

.lesson-page :is(button, a, input, select, textarea):focus-visible {
    outline-color: var(--lesson-accent);
}

/* Give every lesson header one deliberate vertical rhythm. */
.lesson-page .lesson-header {
    display: grid;
    gap: clamp(0.7rem, 1vw, 0.9rem);
    padding-block: 0.15rem clamp(1.05rem, 1.5vw, 1.3rem);
}

.lesson-page .lesson-header > * {
    margin-block: 0;
}

.lesson-page .lesson-header h1 {
    max-width: 100%;
    font-size: clamp(2.75rem, 4vw, 4rem);
    line-height: 1.04;
    text-wrap: balance;
}

.lesson-page .lesson-meta {
    gap: 0.55rem;
}

.lesson-page .lesson-meta > span {
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    min-height: 2.25rem;
    margin: 0;
    padding: 0.5rem 0.8rem;
    border-radius: 999px;
    line-height: 1;
}

.lesson-page .lesson-meta-pill {
    color: rgba(224, 233, 235, 0.84);
    background: rgba(102, 217, 173, 0.07);
    border: 1px solid rgba(102, 217, 173, 0.24);
}

.lesson-page .lesson-meta .status-badge {
    margin-left: 0;
}

/* Content-driven stage sizing: hidden or empty regions never reserve space. */
.lesson-page .quest-stage {
    min-height: 0;
    align-content: start;
    grid-auto-rows: max-content;
}

.lesson-page .quest-stage[hidden],
.lesson-page .quest-stage [hidden] {
    display: none !important;
}

.lesson-page .quest-stage > * {
    min-width: 0;
    max-width: 100%;
    align-self: start;
}

.lesson-page :is(
    .theory-feedback,
    .j223-feedback,
    .signature-task__preflight-feedback,
    [data-feedback],
    [data-status-message]
):empty {
    display: none;
}

/* Natural card heights prevent a short sibling being stretched to match a long one. */
.lesson-page :is(
    .concept-card-grid,
    .theory-question-grid,
    .device-classification-grid,
    .device-investigation-grid,
    .visual-grid,
    .data-visual-grid,
    .mission-stage-grid,
    .mission-stage-layout,
    .mission-objective-grid,
    .mission-footer-grid,
    .threat-knowledge,
    .threat-apply-guide,
    .threat-mission-summary,
    .storage-hero,
    .storage-apply-guide,
    .storage-mission-grid,
    .storage-knowledge,
    .nw-model__scene,
    .pe-knowledge,
    .pe-apply-guide,
    .pe-mission-summary
) {
    align-items: start;
    align-content: start;
    grid-auto-rows: max-content;
}

.lesson-page :is(
    .lesson-section,
    .concept-card,
    .exam-tip-panel,
    .exam-question-card,
    .theory-activity-panel,
    .practice-terminal-card,
    .mini-mission-card,
    .mission-objective-card,
    .mission-workspace-card,
    .lesson-visual-card
) {
    height: auto;
    min-height: 0;
    align-self: start;
}

.lesson-page .concept-card-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
}

.lesson-page .threat-evidence-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
}

.lesson-page .threat-family--identity_access_control_centre .threat-evidence-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lesson-page .threat-family--security_exam_operations_room .threat-evidence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.lesson-page .threat-evidence-grid button,
.lesson-page .nw-model__items article,
.lesson-page .performance-room__result > div {
    min-height: 0;
}

.lesson-page .axis-ring button {
    min-height: 44px;
}

.lesson-page .concept-card {
    border-color: var(--lesson-line);
    background: linear-gradient(145deg, var(--lesson-panel), var(--lesson-panel-deep));
}

.lesson-page .concept-card span {
    color: var(--cq-text-secondary, #b8c7c9);
}

.lesson-page .theory-feedback {
    color: var(--lesson-accent);
}

/* Long lesson copy belongs in the page flow, not an unnecessary inner scroller. */
.lesson-page :is(
    .lesson-long-text,
    .lesson-copy-card,
    .lesson-explanation-card,
    .model-answer
) {
    max-height: none;
    overflow-y: visible;
    padding-right: 0;
}

/* Shared navy surfaces replace one-off family panel colours. */
.lesson-page :is(
    .concept-experience,
    .signature-experience,
    .memory-core,
    .memory-race,
    .j223-header,
    .j223-workspace,
    .j223-mastery,
    .j223-support,
    .j223-exam,
    .j223-current-state,
    .j223-diagnose,
    .threat-model,
    .threat-current,
    .threat-console,
    .threat-exam,
    .threat-knowledge > *,
    .threat-apply-guide > *,
    .threat-mission-summary > *,
    .storage-hero,
    .storage-apply-guide,
    .storage-mission-grid,
    .storage-knowledge
) {
    border-color: var(--lesson-line);
    background: linear-gradient(145deg, var(--lesson-panel), var(--lesson-panel-deep));
}

@media (max-width: 768px) {
    .lesson-page .lesson-header {
        gap: 0.65rem;
        padding-block: 0.1rem 1rem;
    }

    .lesson-page .lesson-header h1 {
        font-size: clamp(2rem, 8vw, 2.4rem) !important;
        line-height: 1.06 !important;
        text-wrap: pretty;
    }

    .lesson-page .concept-card-grid,
    .lesson-page .threat-evidence-grid,
    .lesson-page .threat-family--identity_access_control_centre .threat-evidence-grid,
    .lesson-page .threat-family--security_exam_operations_room .threat-evidence-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 430px) {
    .lesson-page .concept-card-grid,
    .lesson-page .threat-evidence-grid,
    .lesson-page .threat-family--identity_access_control_centre .threat-evidence-grid,
    .lesson-page .threat-family--security_exam_operations_room .threat-evidence-grid {
        grid-template-columns: 1fr;
    }
}

/* Shared theory journey: Brief -> Explore -> Practise -> Prove. */
.theory-briefing-board {
    display: grid;
    gap: 1rem;
    padding: clamp(1rem, 2.5vw, 1.65rem);
    overflow: hidden;
    border: 1px solid var(--lesson-line);
    border-radius: 1rem;
    background:
        linear-gradient(rgba(102, 217, 173, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 217, 173, 0.035) 1px, transparent 1px),
        linear-gradient(145deg, rgba(11, 31, 38, 0.98), rgba(5, 17, 22, 0.98));
    background-size: 2.5rem 2.5rem, 2.5rem 2.5rem, auto;
    box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.2);
}

.theory-briefing-board__hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(10rem, 0.28fr);
    gap: clamp(1rem, 3vw, 2rem);
    align-items: start;
}

.theory-briefing-board__hero h2 {
    max-width: 18ch;
    margin: 0.2rem 0 0;
    font-size: clamp(1.55rem, 3vw, 2.25rem);
    line-height: 1.08;
    text-wrap: balance;
}

.theory-briefing-board__summary {
    max-width: 68ch;
    margin: 0.8rem 0 0;
    color: var(--cq-text-secondary, #b8c7c9);
    font-size: clamp(1rem, 1.4vw, 1.08rem);
    line-height: 1.65;
}

.theory-briefing-board__status {
    display: grid;
    gap: 0.2rem;
    min-height: 7rem;
    padding: 1rem;
    align-content: center;
    border: 1px solid rgba(102, 217, 173, 0.42);
    background: rgba(102, 217, 173, 0.075);
}

.theory-briefing-board__status span,
.theory-briefing-board__status small {
    color: var(--cq-text-secondary, #b8c7c9);
}

.theory-briefing-board__status span {
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.theory-briefing-board__status strong {
    color: var(--lesson-accent);
    font-size: 1.25rem;
}

.theory-mission-path {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.55rem;
    padding-block: 0.2rem;
}

.theory-mission-path > div {
    position: relative;
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.6rem;
    min-height: 4.75rem;
    padding: 0.75rem;
    align-items: center;
    border: 1px solid var(--lesson-line);
    background: rgba(255, 255, 255, 0.025);
}

.theory-mission-path > div:not(:last-child)::after {
    position: absolute;
    z-index: 1;
    top: 50%;
    right: -0.55rem;
    width: 0.55rem;
    height: 1px;
    content: "";
    background: rgba(102, 217, 173, 0.5);
}

.theory-mission-path > div > span {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border: 1px solid rgba(102, 217, 173, 0.35);
    border-radius: 50%;
    color: var(--lesson-accent);
    font-size: 0.72rem;
    font-weight: 900;
}

.theory-mission-path > div > div {
    display: grid;
    gap: 0.1rem;
}

.theory-mission-path small {
    color: var(--cq-text-secondary, #b8c7c9);
}

.theory-mission-path .is-current {
    border-color: var(--lesson-accent);
    background: var(--lesson-accent-soft);
    box-shadow: inset 0 -0.2rem 0 var(--lesson-accent);
}

.theory-mission-path .is-current > span {
    color: #061317;
    background: var(--lesson-accent);
}

.theory-targets {
    display: grid;
    gap: 0.8rem;
    padding: clamp(0.9rem, 2vw, 1.25rem);
    border: 1px solid var(--lesson-line);
    background: rgba(2, 13, 17, 0.76);
}

.theory-targets > header {
    display: flex;
    gap: 1rem;
    align-items: end;
    justify-content: space-between;
}

.theory-targets h3 {
    margin: 0.15rem 0 0;
    font-size: clamp(1.15rem, 2vw, 1.35rem);
}

.theory-targets > header > span {
    flex: 0 0 auto;
    padding: 0.4rem 0.65rem;
    border: 1px solid var(--lesson-line);
    color: var(--lesson-accent);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.theory-targets__grid,
.theory-targets__more > div {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
    gap: 0.7rem;
}

.theory-targets article {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.7rem;
    min-height: 5.25rem;
    padding: 0.9rem;
    align-items: start;
    border: 1px solid var(--lesson-line);
    border-top-color: rgba(102, 217, 173, 0.55);
    background: linear-gradient(145deg, rgba(17, 37, 44, 0.94), rgba(8, 23, 29, 0.94));
}

.theory-targets article > span {
    color: var(--lesson-accent);
    font-family: var(--font-mono, monospace);
    font-size: 0.76rem;
    font-weight: 900;
}

.theory-targets article p {
    margin: 0;
    line-height: 1.5;
}

.theory-targets__more,
.theory-briefing-notes {
    border: 1px solid var(--lesson-line);
    background: rgba(3, 14, 18, 0.72);
}

.theory-targets__more > summary,
.theory-briefing-notes > summary {
    min-height: 44px;
    cursor: pointer;
    list-style: none;
}

.theory-targets__more > summary::-webkit-details-marker,
.theory-briefing-notes > summary::-webkit-details-marker {
    display: none;
}

.theory-targets__more > summary {
    display: flex;
    padding: 0.75rem 0.9rem;
    align-items: center;
    justify-content: space-between;
    color: var(--lesson-accent);
    font-weight: 850;
}

.theory-targets__more > summary::after {
    content: "+";
    font-size: 1.35rem;
}

.theory-targets__more[open] > summary::after {
    content: "−";
}

.theory-targets__more > div {
    padding: 0 0.8rem 0.8rem;
}

.theory-briefing-notes > summary {
    display: flex;
    gap: 1rem;
    padding: 0.85rem 1rem;
    align-items: center;
    justify-content: space-between;
}

.theory-briefing-notes > summary > span:first-child {
    display: grid;
    gap: 0.1rem;
}

.theory-briefing-notes > summary small {
    color: var(--cq-text-secondary, #b8c7c9);
}

.theory-briefing-notes > summary > span:last-child {
    color: var(--lesson-accent);
    font-size: 1.5rem;
    transition: transform 180ms ease;
}

.theory-briefing-notes[open] > summary > span:last-child {
    transform: rotate(45deg);
}

.theory-briefing-notes__copy {
    max-width: 76ch;
    padding: 0 1rem 1rem;
    color: var(--cq-text-secondary, #b8c7c9);
    line-height: 1.65;
}

.theory-stage-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.15rem 1rem;
    padding: 0.9rem 0 1rem;
    align-items: center;
    border-bottom: 1px solid var(--lesson-line);
}

.theory-stage-heading .eyebrow,
.theory-stage-heading h2,
.theory-stage-heading__summary {
    grid-column: 1;
}

.theory-stage-heading h2 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 2.65rem);
}

.theory-stage-heading__summary {
    max-width: 62ch;
    margin: 0.35rem 0 0;
    color: var(--cq-text-secondary, #b8c7c9);
    line-height: 1.55;
}

.theory-stage-heading__badge {
    grid-column: 2;
    grid-row: 1 / span 3;
    min-width: 6.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(102, 217, 173, 0.52);
    color: var(--lesson-accent);
    background: var(--lesson-accent-soft);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-align: center;
    text-transform: uppercase;
}

.theory-showcase-lesson .quest-step-tab {
    min-height: 44px;
}

.theory-showcase-lesson .quest-step-tab.is-active {
    border-color: rgba(102, 217, 173, 0.62);
    background: rgba(102, 217, 173, 0.12);
    box-shadow: inset 0 -0.18rem 0 var(--lesson-accent), 0 0 1.5rem rgba(102, 217, 173, 0.08);
}

.theory-showcase-lesson :is(button, select, summary, [role="button"]):focus-visible {
    outline: 3px solid var(--lesson-accent);
    outline-offset: 3px;
}

.theory-showcase-lesson :is(button, select, summary, [role="button"]) {
    min-height: 44px;
}

.theory-showcase-lesson .quest-stage:not([hidden]) > * {
    animation: theory-panel-in 240ms ease-out both;
}

@keyframes theory-panel-in {
    from {
        opacity: 0;
        transform: translateY(0.45rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    .theory-briefing-board__hero {
        grid-template-columns: 1fr;
    }

    .theory-briefing-board__status {
        min-height: 0;
    }

    .theory-mission-path {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .theory-mission-path > div:nth-child(2)::after {
        display: none;
    }
}

@media (max-width: 600px) {
    .theory-briefing-board {
        padding: 0.85rem;
        border-radius: 0.75rem;
    }

    .theory-mission-path,
    .theory-targets__grid,
    .theory-targets__more > div {
        grid-template-columns: 1fr;
    }

    .theory-mission-path > div::after {
        display: none;
    }

    .theory-targets > header {
        align-items: start;
    }

    .theory-stage-heading {
        grid-template-columns: 1fr;
    }

    .theory-stage-heading__badge {
        grid-column: 1;
        grid-row: auto;
        width: fit-content;
        min-width: 0;
        margin-top: 0.45rem;
        padding: 0.55rem 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .theory-showcase-lesson .quest-stage:not([hidden]) > *,
    .theory-briefing-notes > summary > span:last-child {
        animation: none;
        transition: none;
    }
}