:root {
    --exercise-ink: #24332f;
    --exercise-muted: #687873;
    --exercise-green: #1f6b5b;
    --exercise-dark: #174e44;
    --exercise-gold: #b58b45;
    --exercise-paper: #fbfaf6;
    --exercise-line: #dfe5df;
    --exercise-shadow: 0 12px 30px rgba(30, 58, 49, .09);
}

body {
    background: #f1f4f1;
    color: var(--exercise-ink);
}

.exercisePage {
    max-width: 1240px;
    margin: 70px auto 0;
    padding: 30px 24px 60px;
}

.exerciseHero {
    margin-bottom: 22px;
    padding: 28px clamp(18px, 4vw, 48px);
    background: linear-gradient(115deg, #e7f0eb, var(--exercise-paper) 70%);
    border: 1px solid var(--exercise-line);
    border-top: 4px solid var(--exercise-gold);
    box-shadow: var(--exercise-shadow);
}

.exerciseHero h1 {
    margin: 0 0 8px;
    color: var(--exercise-ink);
    font-size: clamp(1.5rem, 3vw, 2.35rem);
    letter-spacing: .06em;
}

.exerciseHero p {
    max-width: 780px;
    margin: 0;
    color: var(--exercise-muted);
    line-height: 1.55;
}

.exerciseLayout {
    display: grid;
    grid-template-columns: minmax(240px, .7fr) minmax(0, 1.8fr);
    gap: 20px;
    align-items: start;
}

.exercisePanel {
    padding: 22px;
    background: var(--exercise-paper);
    border: 1px solid var(--exercise-line);
    border-radius: 6px;
    box-shadow: var(--exercise-shadow);
}

.exercisePanel h2 {
    margin: 0 0 18px;
    color: var(--exercise-dark);
    font-size: 1.05rem;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.filterStack {
    display: grid;
    gap: 14px;
}

.filterLabel {
    display: grid;
    gap: 6px;
    color: var(--exercise-muted);
    font-size: .82rem;
    font-weight: 600;
}

.filterLabel input,
.filterLabel select {
    box-sizing: border-box;
    width: 100%;
    min-height: 42px;
    padding: 0 11px;
    border: 1px solid #b9cbc4;
    border-radius: 4px;
    background: #fff;
    color: var(--exercise-ink);
    font: inherit;
}

.filterLabel input:focus,
.filterLabel select:focus {
    border-color: var(--exercise-green);
    box-shadow: 0 0 0 3px rgba(31, 107, 91, .12);
    outline: none;
}

.muscleTabs {
    display: grid;
    gap: 6px;
}

.muscleTab {
    min-height: 38px;
    padding: 0 11px;
    border: 1px solid var(--exercise-line);
    border-radius: 4px;
    background: #fff;
    color: var(--exercise-muted);
    cursor: pointer;
    font: inherit;
    text-align: left;
}

.muscleTab.active,
.muscleTab:hover {
    border-color: var(--exercise-green);
    background: #eef5f0;
    color: var(--exercise-dark);
}

.resultToolbar {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
}

.resultCount {
    color: var(--exercise-muted);
    font-size: .82rem;
}

.exerciseGrid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.exerciseCard {
    overflow: hidden;
    border: 1px solid var(--exercise-line);
    border-radius: 6px;
    background: #fff;
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.exerciseCard:hover {
    border-color: #9bbcaf;
    box-shadow: 0 9px 20px rgba(31, 107, 91, .1);
    transform: translateY(-2px);
}

.exerciseImagePlaceholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    padding: 18px;
    background: repeating-linear-gradient(135deg, #eef5f0, #eef5f0 10px, #e5f0eb 10px, #e5f0eb 20px);
    color: var(--exercise-muted);
    font-size: .8rem;
    text-align: center;
}

.exerciseBody {
    padding: 15px;
}

.exerciseHeader {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: start;
}

.exerciseName {
    color: var(--exercise-dark);
    font-size: 1rem;
    font-weight: 700;
}

.favoriteExercise {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border: 1px solid var(--exercise-line);
    border-radius: 50%;
    background: #f8fbf9;
    color: var(--exercise-green);
    cursor: pointer;
}

.favoriteExercise.is-favorite {
    background: #f7f1df;
    border-color: #dfc58f;
    color: #986f35;
}

.exerciseMeta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 9px;
}

.metaPill {
    padding: 4px 7px;
    border-radius: 999px;
    background: #eef5f0;
    color: var(--exercise-green);
    font-size: .68rem;
    font-weight: 700;
}

.exerciseDescription {
    margin: 11px 0 0;
    color: var(--exercise-muted);
    font-size: .84rem;
    line-height: 1.5;
}

.exerciseDetails {
    margin-top: 10px;
}

.exerciseDetails summary {
    color: var(--exercise-green);
    cursor: pointer;
    font-size: .8rem;
    font-weight: 700;
}

.exerciseDetails ol {
    margin: 8px 0 0 18px;
    padding: 0;
    color: var(--exercise-muted);
    font-size: .8rem;
    line-height: 1.5;
}

.emptyResults {
    padding: 28px 10px;
    color: var(--exercise-muted);
    text-align: center;
}

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

    .muscleTabs {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .exercisePage {
        padding: 22px 14px 42px;
    }

    .exerciseGrid {
        grid-template-columns: 1fr;
    }

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

    .resultToolbar {
        align-items: flex-start;
        flex-direction: column;
    }
}