.exercises-page,
.exercise-detail-page {
    width: auto;
    max-width: 100%;
    min-width: 0;
}

.exercises-header {
    display: grid;
    gap: 10px;
    max-width: 700px;
    margin-bottom: 32px;
}

.exercises-header > p:last-child,
.exercise-detail__objective {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}

.exercise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
    gap: 18px;
    width: 100%;
    min-width: 0;
}

.exercise-card {
    display: grid;
    gap: 18px;
    min-width: 0;
    padding: 22px;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface);
    color: inherit;
}

.exercise-card:hover {
    border-color: var(--md-sys-color-primary);
    background: var(--md-sys-color-surface-container-low);
}
.exercise-submit[disabled] { cursor: wait; opacity: .65; }
.exercise-status--success { color: var(--md-sys-color-primary); }

.exercise-card__top,
.exercise-card__bottom,
.exercise-meta,
.exercise-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-width: 0;
    flex-wrap: wrap;
}

.exercise-card__top,
.exercise-card__bottom,
.exercise-meta {
    color: var(--md-sys-color-on-surface-variant);
    font: 12px var(--font-components);
}

.exercise-difficulty {
    color: var(--md-sys-color-primary);
    font-weight: 600;
}

.exercise-card h2 {
    font: 600 1.35rem var(--font-main);
    overflow-wrap: anywhere;
}

.exercise-card p {
    min-height: 42px;
    color: var(--md-sys-color-on-surface-variant);
    font: 13px/1.5 var(--font-components);
    overflow-wrap: anywhere;
}

.exercise-back {
    display: inline-flex;
    gap: 8px;
    width: fit-content;
    margin-bottom: 20px;
    color: var(--md-sys-color-primary);
    font: 500 13px var(--font-components);
}

.exercise-detail__header {
    display: grid;
    gap: 12px;
    min-width: 0;
    padding: 24px;
    border: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container-low);
}

.exercise-meta {
    justify-content: flex-start;
}

.exercise-meta span {
    padding: 6px 9px;
    background: var(--md-sys-color-surface-container);
}

.exercise-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
    width: 100%;
    min-width: 0;
    margin-top: 20px;
    overflow: hidden;
    border: 1px solid var(--md-sys-color-outline-variant);
}

.exercise-instructions,
.exercise-side {
    min-width: 0;
    min-height: 0;
}

.exercise-instructions {
    display: grid;
    gap: 16px;
    padding: 24px;
}

.exercise-instructions h2,
.exercise-side h2 {
    font: 600 1.1rem var(--font-main);
}

.exercise-instructions > p,
.exercise-side p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.exercise-instructions label {
    display: grid;
    gap: 7px;
    min-width: 0;
    min-height: 0;
    font: 600 12px var(--font-components);
}

.exercise-instructions select,
.exercise-instructions textarea,
.exercise-editor {
    width: 100%;
    min-width: 0;
    padding: 10px;
    border: 1px solid var(--md-sys-color-outline);
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    font: 13px var(--font-components);
}

.exercise-editor {
    height: clamp(320px, 52vh, 560px);
    min-height: 320px;
    max-height: 560px;
    padding: 0;
    overflow: hidden;
    background: #1e1e1e;
}

.exercise-editor .monaco-editor,
.exercise-editor .monaco-editor-background,
.exercise-editor .overflow-guard {
    max-height: 100%;
}

.exercise-editor--fallback {
    padding: 14px;
    overflow: auto;
    color: #d4d4d4;
    font: 14px/1.5 Consolas, monospace;
    white-space: pre-wrap;
    outline: none;
}

.exercise-timer,
.exercise-status {
    color: var(--md-sys-color-on-surface-variant);
    font: 13px var(--font-components);
}

.exercise-submit {
    padding: 10px 14px;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font: 600 12px var(--font-components);
}

.exercise-side {
    display: grid;
    align-content: start;
    gap: 16px;
    padding: 24px;
    background: var(--md-sys-color-surface-container-low);
    border-left: 1px solid var(--md-sys-color-outline-variant);
}

.exercise-reset {
    background: transparent;
    border: 1px solid var(--md-sys-color-outline);
    color: var(--md-sys-color-on-surface-variant);
    padding: 6px 12px;
    font: 600 12px var(--font-components);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.exercise-reset:hover {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

.exercise-terminal {
    background: #111;
    border: 1px solid var(--md-sys-color-outline);
    padding: 16px;
    margin-top: 10px;
    color: #e0e0e0;
    font: 13px Consolas, monospace;
    overflow-x: auto;
}

.terminal-status {
    font-weight: bold;
    margin-bottom: 8px;
}

.terminal-status--success {
    color: #4caf50;
}

.terminal-status--error {
    color: #f44336;
}

.terminal-output {
    background: #1e1e1e;
    padding: 10px;
    border: 1px solid #333;
    white-space: pre-wrap;
    word-break: break-all;
    margin-top: 6px;
    margin-bottom: 12px;
    font: 13px/1.4 Consolas, monospace;
}

.terminal-output--error {
    color: #ff8a80;
}

.exercise-side ul {
    display: grid;
    gap: 7px;
    padding-left: 18px;
    color: var(--md-sys-color-on-surface-variant);
    font: 13px var(--font-components);
}

.skeleton-card {
    cursor: default;
}

@media (max-width: 1100px) {
    .exercise-workspace {
        grid-template-columns: minmax(0, 1fr);
    }

    .exercise-side {
        border-top: 1px solid var(--md-sys-color-outline-variant);
        border-left: 0;
    }
}

@media (max-width: 600px) {
    .exercise-detail__header,
    .exercise-instructions,
    .exercise-side {
        padding: 18px;
    }
}