/* ============================================
   MAIN LAYOUT — Premium SaaS 2026
   ============================================ */

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-bg-glass);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--color-border-subtle);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    padding: 0 var(--space-6);
    max-width: var(--container-max);
    margin: 0 auto;
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.logo-icon {
    font-size: 1.75rem;
    line-height: 1;
}

.logo-text {
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: var(--space-1);
    align-items: center;
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-text-primary);
    background: var(--color-primary-light);
}

.nav-link.active {
    color: var(--color-primary);
}

.burger-menu {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-3);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.burger-menu:hover {
    background: var(--color-primary-light);
}

.burger-menu span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    transform-origin: center;
}

/* Theme switcher */
.theme-switcher {
    cursor: pointer;
    font-size: 1.25rem;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
    line-height: 1;
    user-select: none;
}

.theme-switcher:hover {
    background: var(--color-primary-light);
    transform: scale(1.1);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-24);
    text-align: center;
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-primary);
}

/* Ambient gradient orbs */
.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -10%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.12) 0%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -10%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.08) 0%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 820px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.25rem, 6vw, var(--text-5xl));
    line-height: 1.08;
    margin-bottom: var(--space-6);
    letter-spacing: -0.035em;
    font-weight: var(--font-bold);
    background: linear-gradient(
        160deg,
        var(--color-text-primary) 0%,
        var(--color-text-primary) 40%,
        var(--color-primary) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="light"] .hero-title {
    background: linear-gradient(
        160deg,
        #0f172a 0%,
        #1e293b 40%,
        #6366f1 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(var(--text-base), 2.5vw, var(--text-xl));
    color: var(--color-text-secondary);
    margin-bottom: var(--space-10);
    max-width: 640px;
    line-height: var(--leading-relaxed);
}

.hero-btns {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    justify-content: center;
}

.hero-illustration {
    margin-top: var(--space-16);
    width: 100%;
    max-width: 480px;
    opacity: 0.9;
}

/* ============================================
   SECTIONS COMMON
   ============================================ */

section {
    padding: var(--space-24) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-16);
    position: relative;
    letter-spacing: -0.03em;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    margin: var(--space-4) auto 0;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    opacity: 0.7;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    background: var(--color-bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: var(--space-16);
    align-items: start;
}

.about-image .img-placeholder { display: none; }

.specialist-photo {
    width: 100%;
    height: auto;
    aspect-ratio: 3/4;
    object-fit: cover;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.specialist-photo:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.about-text .bio {
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

.expertise-list {
    margin-bottom: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.expertise-list li {
    padding: var(--space-4) var(--space-5);
    padding-left: var(--space-10);
    position: relative;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-subtle);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}

.expertise-list li:hover {
    border-color: var(--color-border-hover);
    transform: translateX(4px);
}

.expertise-list li::before {
    content: '';
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: var(--color-secondary-light);
    border: 2px solid var(--color-secondary);
}

.expertise-list li::after {
    content: '✓';
    position: absolute;
    left: calc(var(--space-4) + 4px);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-secondary);
    font-size: 11px;
    font-weight: var(--font-bold);
}

.certificates { margin-top: var(--space-8); }

.certificates h3 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4) !important;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--text-xs);
}

.cert-grid {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.cert-item {
    background: var(--color-bg-elevated);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    border: 1px solid var(--color-border-subtle);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.cert-item:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* ============================================
   EXERCISES SECTION
   ============================================ */

.exercise-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.search-bar input {
    width: 100%;
    max-width: 400px;
    padding: var(--space-3) var(--space-5);
    padding-left: var(--space-5);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-subtle);
    font-family: inherit;
    font-size: var(--text-sm);
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.search-bar input::placeholder { color: var(--color-text-muted); }

.search-bar input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light), var(--shadow-sm);
}

.category-filters {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-subtle);
    background: transparent;
    cursor: pointer;
    font-weight: var(--font-medium);
    font-family: inherit;
    color: var(--color-text-secondary);
    font-size: var(--text-xs);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-btn:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
}

.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow-sm);
}

.exercise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-6);
}

/* ============================================
   EXERCISE CARDS
   ============================================ */

.exercise-card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    border: 1px solid var(--color-border-subtle);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.exercise-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, transparent 40%, var(--color-primary-glow));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.exercise-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.exercise-card:hover::before {
    opacity: 1;
}

.exercise-card .category-tag {
    display: inline-block;
    align-self: flex-start;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-4);
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.exercise-card h3 {
    margin-bottom: var(--space-2);
    font-size: var(--text-lg);
    line-height: var(--leading-tight);
    letter-spacing: -0.015em;
}

.exercise-card p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-5);
    font-size: var(--text-sm);
    flex-grow: 1;
    line-height: var(--leading-relaxed);
}

.exercise-meta {
    display: flex;
    gap: var(--space-4);
    align-items: center;
    margin-bottom: var(--space-5);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border-subtle);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.exercise-card .btn {
    width: 100%;
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.online {
    background: var(--color-bg-secondary);
}

.online-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.online-card {
    background: var(--color-bg-elevated);
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.online-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-hover);
}

.online-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
    letter-spacing: -0.015em;
}

.online-card p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    line-height: var(--leading-relaxed);
    font-size: var(--text-sm);
    flex-grow: 1;
}

.service-price {
    font-weight: var(--font-bold);
    font-size: var(--text-2xl);
    color: var(--color-primary);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border-subtle);
}

/* Schedule block */
.schedule-block {
    background: var(--color-bg-elevated);
    padding: var(--space-10);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid var(--color-border-subtle);
    position: relative;
    overflow: hidden;
}

.schedule-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    opacity: 0.5;
    pointer-events: none;
}

.schedule-block h3,
.schedule-block .schedule-placeholder {
    position: relative;
    z-index: 1;
}

.schedule-placeholder {
    margin-top: var(--space-3);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
}

/* ============================================
   CONTACTS SECTION
   ============================================ */

.contacts-grid {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    background: var(--color-bg-elevated);
    padding: var(--space-10);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-subtle);
}

.info-item {
    margin-bottom: var(--space-6);
}

.info-item strong {
    display: block;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}

.info-item a {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    font-weight: var(--font-medium);
    transition: color var(--transition-fast);
}

.info-item a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-subtle);
    flex-wrap: nowrap;
    justify-content: center;
    align-items: stretch;
}

.social-link {
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-subtle);
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    flex: 1;
    white-space: nowrap;
}

.social-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-sm);
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    flex-shrink: 0;
}

.social-icon.whatsapp {
    background-image: url('https://cdn-icons-png.flaticon.com/512/733/733585.png');
}

.social-icon.telegram {
    background-image: url('https://cdn-icons-png.flaticon.com/512/2111/2111646.png');
}

.social-icon-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
    flex-shrink: 0;
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq {
    background: var(--color-bg-secondary);
}

.faq-accordion {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.faq-item {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-subtle);
    transition: all var(--transition-fast);
    overflow: hidden;
}

.faq-item:hover {
    border-color: var(--color-border-hover);
}

.faq-item.active {
    border-color: var(--color-border-active);
    box-shadow: var(--shadow-glow-sm);
}

.faq-question {
    padding: var(--space-5) var(--space-6);
    cursor: pointer;
    font-weight: var(--font-medium);
    font-size: var(--text-base);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    transition: color var(--transition-fast);
    color: var(--color-text-primary);
}

.faq-question span {
    font-size: var(--text-xs);
    transition: transform var(--transition-base);
    color: var(--color-text-muted);
}

.faq-item.active .faq-question span {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--space-6) var(--space-5);
    display: none;
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    font-size: var(--text-sm);
}

.faq-item.active .faq-answer {
    display: block;
}

/* ============================================
   FOOTER
   ============================================ */

.main-footer {
    background: var(--color-bg-primary);
    padding: var(--space-10) 0;
    text-align: center;
    border-top: 1px solid var(--color-border-subtle);
}

.main-footer p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-top: var(--space-4);
}

.footer-links a {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text-primary);
}

/* ============================================
   MODAL
   ============================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: var(--space-4);
}

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

.modal-content {
    background: var(--color-bg-elevated);
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: var(--radius-xl);
    position: relative;
    padding: var(--space-10);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border-subtle);
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-5);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-full);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border-color: var(--color-border-hover);
}

/* Exercise detail in modal */
.ex-detail-header { margin-bottom: var(--space-6); }

.ex-detail-category {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--color-primary-light);
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.ex-detail-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
}

.ex-progress-container {
    width: 100%;
    height: 4px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.ex-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
    width: 0%;
}

.ex-steps-container { margin-bottom: var(--space-6); }

.ex-step {
    display: none;
    animation: fadeIn 0.3s var(--ease-out);
}

.ex-step.active { display: block; }

.ex-step-text {
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
    padding: var(--space-6);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-subtle);
}

.ex-controls {
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    .about-image { max-width: 400px; margin: 0 auto; }
}

@media (max-width: 768px) {
    section { padding: var(--space-16) 0; }

    .nav-links { display: none; }
    .burger-menu { display: flex; }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + var(--space-12)) 0 var(--space-16);
    }

    .hero-title { font-size: clamp(1.75rem, 8vw, 2.75rem); }
    .hero-subtitle { font-size: var(--text-base); }

    .section-title { margin-bottom: var(--space-10); }

    .exercise-grid { grid-template-columns: 1fr; }
    .online-grid { grid-template-columns: 1fr; }

    .contacts-grid { max-width: 100%; }
    .contact-info { padding: var(--space-6); }

    /* Horizontal scrolling filters on tablet */
    .category-filters {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: var(--space-2);
        scrollbar-width: none;
    }
    .category-filters::-webkit-scrollbar { display: none; }

    /* Social links wrap */
    .social-links {
        flex-wrap: wrap;
        gap: var(--space-2);
    }
    .social-link {
        flex: unset;
        padding: var(--space-3) var(--space-4);
    }

    /* Modal mobile */
    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }
    .modal-content {
        max-height: 92vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        padding: var(--space-8);
    }

    /* Schedule block */
    .schedule-block {
        padding: var(--space-6);
    }

    /* Online cards */
    .online-card {
        padding: var(--space-6);
    }

    /* FAQ */
    .faq-question {
        padding: var(--space-4) var(--space-5);
        font-size: var(--text-sm);
    }
    .faq-answer {
        padding: 0 var(--space-5) var(--space-4);
    }
}

@media (max-width: 480px) {
    .container { padding: 0 var(--space-4); }

    .navbar { padding: 0 var(--space-4); }

    .logo-text { font-size: var(--text-sm); }

    .hero {
        padding: calc(var(--header-height) + var(--space-8)) 0 var(--space-12);
    }
    .hero-title { font-size: clamp(1.5rem, 7vw, 2rem); }
    .hero-subtitle {
        font-size: var(--text-sm);
        margin-bottom: var(--space-6);
    }
    .hero-btns {
        flex-direction: column;
        width: 100%;
    }
    .hero-btns .btn { width: 100%; justify-content: center; }

    section { padding: var(--space-12) 0; }
    .section-title {
        font-size: var(--text-xl);
        margin-bottom: var(--space-8);
    }

    /* About */
    .about-text .bio { font-size: var(--text-base); }
    .expertise-list li {
        padding: var(--space-3) var(--space-4);
        padding-left: var(--space-8);
        font-size: var(--text-xs);
    }
    .expertise-list li::before {
        width: 16px;
        height: 16px;
        left: var(--space-3);
    }
    .expertise-list li::after {
        left: calc(var(--space-3) + 3px);
        font-size: 9px;
    }

    /* Exercise cards */
    .exercise-card {
        padding: var(--space-5);
    }
    .exercise-card h3 { font-size: var(--text-base); }

    /* Category filters */
    .category-filters { gap: var(--space-1); }
    .filter-btn { padding: var(--space-2) var(--space-3); font-size: 0.6875rem; }

    /* Search */
    .search-bar input {
        max-width: 100%;
        font-size: 16px; /* Prevents iOS zoom on focus */
    }

    /* Services */
    .online-card { padding: var(--space-5); }
    .online-card h3 { font-size: var(--text-lg); }
    .service-price { font-size: var(--text-xl); }

    /* Contacts */
    .contact-info { padding: var(--space-5); }
    .info-item a { font-size: var(--text-base); }
    .social-links {
        flex-direction: column;
        gap: var(--space-2);
    }
    .social-link {
        flex: unset;
        width: 100%;
        justify-content: center;
        padding: var(--space-3) var(--space-4);
    }

    /* Modal */
    .modal-content {
        padding: var(--space-5);
        max-height: 95vh;
    }
    .ex-detail-title { font-size: var(--text-xl); }
    .ex-step-text {
        font-size: var(--text-base);
        padding: var(--space-4);
    }
    .ex-controls { flex-direction: column; }
    .ex-controls .btn { width: 100%; }

    /* FAQ */
    .faq-question { font-size: var(--text-sm); }
}

/* Touch-friendly: larger tap targets on mobile */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 48px;
        padding: var(--space-4) var(--space-6);
    }
    .filter-btn {
        min-height: 40px;
        padding: var(--space-3) var(--space-4);
    }
    .nav-links.active .nav-link {
        min-height: 48px;
        display: flex;
        align-items: center;
    }
    .faq-question {
        min-height: 52px;
    }
    .social-link {
        min-height: 44px;
    }
}