/* EXERCISES HERO */
.exercises-hero {
    padding: 80px 60px 50px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.exercises-hero-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background:
        radial-gradient(ellipse at 50% 50%, rgba(0,245,255,0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 80%, rgba(57,255,20,0.03) 0%, transparent 50%);
    pointer-events: none;
}

.exercises-hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.exercises-hero-content h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.exercises-hero-sub {
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.7;
}

/* FILTER SECTION */
.filter-section {
    padding: 0 60px 30px;
    position: sticky;
    top: 60px;
    z-index: 50;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.filter-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* SEARCH BAR */
.search-bar {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: 14px;
    padding: 14px 20px;
    margin-bottom: 18px;
    transition: border-color 0.3s;
}

.search-bar:focus-within {
    border-color: rgba(0,245,255,0.5);
    box-shadow: var(--glow-light);
}

.search-bar i {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-right: 12px;
}

.search-bar input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
}

.search-bar input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.result-count {
    color: var(--neon-cyan);
    font-family: var(--font-ui);
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

/* FILTER ROW */
.filter-row {
    display: flex;
    gap: 14px;
    align-items: flex-end;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
    min-width: 150px;
}

.filter-group label {
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.filter-group select {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.88rem;
    outline: none;
    cursor: pointer;
    transition: border-color 0.3s;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239aaabb' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 35px;
}

.filter-group select:focus {
    border-color: rgba(0,245,255,0.5);
}

.filter-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.clear-btn {
    background: none;
    border: 1.5px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 600;
    transition: all 0.25s;
    white-space: nowrap;
}

.clear-btn:hover {
    border-color: #ff4444;
    color: #ff4444;
}

/* MUSCLE QUICK TAGS */
.muscle-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.muscle-tags .muscle-tag {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 50px;
    cursor: pointer;
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.25s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.muscle-tags .muscle-tag:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.muscle-tags .muscle-tag.active {
    background: rgba(0,245,255,0.08);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

/* EXERCISE GRID */
.exercises-grid-section {
    padding: 30px 60px 60px;
    max-width: 1320px;
    margin: 0 auto;
}

.exercises-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

/* EXERCISE CARD */
.exercise-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 22px;
    cursor: pointer;
    transition: all 0.25s;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exercise-card:hover {
    border-color: rgba(0,245,255,0.4);
    transform: translateY(-3px);
    box-shadow: var(--glow-light);
}

.exercise-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.exercise-card-name {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.exercise-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(0,245,255,0.08);
    border: 1px solid rgba(0,245,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--neon-cyan);
    font-size: 0.9rem;
}

.exercise-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.card-tag {
    padding: 3px 10px;
    border-radius: 20px;
    font-family: var(--font-ui);
    font-size: 0.68rem;
    font-weight: 600;
}

.tag-muscle {
    background: rgba(0,245,255,0.08);
    color: var(--neon-cyan);
    border: 1px solid rgba(0,245,255,0.2);
}

.tag-equipment {
    background: rgba(57,255,20,0.06);
    color: var(--neon-green);
    border: 1px solid rgba(57,255,20,0.2);
}

.tag-difficulty {
    background: rgba(191,0,255,0.06);
    color: #bf00ff;
    border: 1px solid rgba(191,0,255,0.2);
}

.exercise-card-desc {
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.82rem;
    line-height: 1.5;
    font-weight: 300;
}

.exercise-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.04);
}

.view-demo {
    color: var(--neon-cyan);
    font-family: var(--font-ui);
    font-size: 0.78rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

.card-muscles-list {
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.72rem;
}

/* MODAL ENHANCEMENTS */
.modal-meta {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.equipment-tag {
    display: inline-block;
    background: rgba(57,255,20,0.06);
    color: var(--neon-green);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(57,255,20,0.2);
    font-family: var(--font-ui);
}

.difficulty-tag {
    display: inline-block;
    background: rgba(191,0,255,0.06);
    color: #bf00ff;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(191,0,255,0.2);
    font-family: var(--font-ui);
}

/* EMPTY STATE */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    color: var(--border-color);
    margin-bottom: 15px;
}

.empty-state h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-state p {
    font-family: var(--font-body);
    font-size: 0.92rem;
}

/* EXERCISES CTA */
.exercises-cta {
    padding: 80px 60px;
    text-align: center;
    background: rgba(7,17,31,0.8);
    border-top: 1px solid var(--border-color);
}

.exercises-cta h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.exercises-cta p {
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 1rem;
    margin-bottom: 30px;
    font-weight: 300;
}

/* EXERCISE MODAL (shared with result page) */
.exercise-modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(2,6,23,0.9);
    backdrop-filter: blur(12px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.exercise-modal.active { display: flex; }

.modal-container {
    background: var(--bg-card);
    border: 1px solid var(--neon-cyan);
    border-radius: 20px;
    width: 90%;
    max-width: 650px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 30px;
    position: relative;
    box-shadow: var(--glow-medium);
}

.modal-close {
    position: absolute;
    top: 15px; right: 15px;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 32px; height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s;
}

.modal-close:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.modal-header {
    margin-bottom: 20px;
    padding-right: 40px;
}

.modal-header h2 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.modal-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.tab-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 18px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font-ui);
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tab-btn:hover,
.tab-btn.active {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    background: rgba(0,245,255,0.05);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-secondary);
    margin-bottom: 15px;
}

.video-container iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}

.youtube-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #0f0f0f;
    border: 1px solid rgba(255,0,0,0.2);
    border-radius: 12px;
    padding: 40px 20px;
    text-decoration: none;
    margin-bottom: 15px;
    gap: 12px;
    transition: background 0.3s, border-color 0.3s;
    cursor: pointer;
}

.youtube-card:hover {
    background: #1a0000;
    border-color: rgba(255,0,0,0.5);
}

.youtube-card-play {
    color: #ff0000;
    font-size: 3rem;
    line-height: 1;
}

.youtube-card h3 {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
    margin: 0;
}

.youtube-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-body);
    margin: 0;
}

.youtube-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #ff0000;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    font-family: var(--font-ui);
    border: 1px solid #ff0000;
    padding: 8px 18px;
    border-radius: 20px;
    transition: all 0.3s;
}

.youtube-link:hover { background: rgba(255,0,0,0.1); }

.tips-content { display: flex; flex-direction: column; gap: 15px; }

.tip-item {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 15px 20px;
    border-left: 3px solid var(--neon-cyan);
}

.tip-item h4 {
    color: var(--neon-cyan);
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tip-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    font-family: var(--font-body);
    font-weight: 300;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .exercises-hero { padding: 36px 16px 22px; }
    .exercises-hero-content h1 { font-size: 1.8rem; }
    .filter-section { padding: 0 14px 12px; position: relative; top: 0; }
    .search-bar { padding: 10px 14px; margin-bottom: 10px; }
    .result-count { display: none; }
    /* 2 column filter row on mobile */
    .filter-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        margin-bottom: 10px;
    }
    .filter-group { min-width: 0; }
    .filter-group select { padding: 8px 10px; font-size: 0.82rem; }
    .clear-btn { grid-column: 1 / -1; width: 100%; }
    /* horizontal scroll muscle tags */
    .muscle-tags {
        overflow-x: auto; flex-wrap: nowrap;
        padding-bottom: 4px; -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .muscle-tags::-webkit-scrollbar { display: none; }
    .muscle-tags .muscle-tag { white-space: nowrap; flex-shrink: 0; font-size: 0.7rem; padding: 5px 11px; }
    /* 2x2 exercise grid on mobile */
    .exercises-grid-section { padding: 14px 12px 40px; }
    .exercises-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .exercise-card { padding: 12px; gap: 8px; }
    .exercise-card-name { font-size: 0.82rem; }
    .exercise-card-desc { font-size: 0.75rem; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .card-tag { font-size: 0.65rem; padding: 2px 6px; }
    /* modal centered on mobile */
    .exercise-modal { align-items: center; padding: 16px; }
    .modal-container {
        width: 100%; max-width: 100%;
        border-radius: 20px;
        max-height: 88vh; overflow-y: auto;
        padding: 20px 16px;
    }
    /* youtube card centered on mobile */
    .youtube-card {
        padding: 28px 16px;
        align-items: center;
        justify-content: center;
        text-align: center;
    }
    .youtube-card-play { font-size: 2.5rem; }
    .youtube-card h3 { font-size: 1rem; }
    .exercises-cta { padding: 40px 16px; }
    .exercises-cta h2 { font-size: 1.4rem; }
}