:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --accent: #c8f560;
    --accent-hover: #d4f97a;
    --accent-dim: rgba(200, 245, 96, 0.1);
    --border: #2a2a2a;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.site-nav.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--accent-dim);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(200, 245, 96, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(200, 245, 96, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 24px;
    padding: 8px 20px;
    border: 1px solid rgba(200, 245, 96, 0.3);
    border-radius: 100px;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.hero h1 span {
    color: var(--accent);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 100px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: #0a0a0a;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(200, 245, 96, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1rem;
}

.section {
    padding: 100px 24px;
}

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.service-card:hover {
    border-color: rgba(200, 245, 96, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.service-card-img {
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.service-card-body {
    padding: 28px;
}

.service-card-body h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.service-card-body .service-subtitle {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 12px;
}

.service-card-body p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

a.service-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

.service-cta {
    display: inline-block;
    margin-top: 16px;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.service-card:hover .service-cta {
    letter-spacing: 0.5px;
}

.service-detail-hero {
    padding-top: 140px;
    padding-bottom: 60px;
    text-align: center;
}

.service-detail-hero h1 {
    font-size: 2.6rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-detail-hero .service-detail-subtitle {
    color: var(--accent);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.service-detail-hero p {
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.7;
    font-size: 1.05rem;
}

.service-detail-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 24px;
}

.detail-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent);
}

.detail-card p, .detail-card li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.detail-card ul {
    list-style: none;
    padding: 0;
}

.detail-card ul li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.detail-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.detail-highlight {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 0;
}

.detail-highlight .highlight-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    min-width: 100px;
}

.detail-highlight .highlight-value {
    color: #fff;
    font-weight: 600;
    font-size: 1.05rem;
}

.price-tag {
    display: inline-block;
    background: rgba(200, 245, 96, 0.1);
    border: 1px solid rgba(200, 245, 96, 0.3);
    color: var(--accent);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 700;
    margin: 16px 0;
}

.service-detail-cta {
    text-align: center;
    padding: 60px 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: 60px;
}

.service-detail-cta h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.service-detail-cta p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 24px;
    line-height: 1.6;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.assessment-promo {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(200, 245, 96, 0.05) 100%);
    border: 1px solid rgba(200, 245, 96, 0.2);
    border-radius: var(--radius-lg);
    padding: 60px;
    text-align: center;
}

.assessment-promo h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.assessment-promo p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 32px;
}

.assessment-page {
    padding-top: 100px;
    min-height: 100vh;
}

.assessment-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

.assessment-progress {
    display: flex;
    gap: 8px;
    margin-bottom: 48px;
}

.progress-step {
    flex: 1;
    height: 4px;
    background: var(--border);
    border-radius: 100px;
    transition: var(--transition);
}

.progress-step.active {
    background: var(--accent);
}

.progress-step.completed {
    background: var(--accent);
    opacity: 0.5;
}

.step-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-header {
    margin-bottom: 40px;
}

.step-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.goal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.goal-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.goal-card:hover {
    border-color: rgba(200, 245, 96, 0.4);
    background: var(--bg-card-hover);
}

.goal-card.selected {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.goal-card .goal-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    width: 80px;
    height: 80px;
    margin-left: auto;
    margin-right: auto;
}

.goal-card .goal-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.goal-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.goal-card p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.video-upload-area {
    background: #1a1a2e;
    border: 2px dashed #374151;
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
    transition: border-color 0.3s;
}

.video-upload-area:hover,
.video-upload-area.drag-over {
    border-color: var(--accent);
}

.video-upload-area #videoPlaceholder {
    color: var(--text-secondary);
}

.video-upload-progress {
    margin-top: 16px;
}

.video-upload-progress .progress-bar-track {
    width: 100%;
    height: 6px;
    background: #374151;
    border-radius: 3px;
    overflow: hidden;
}

.video-upload-progress .progress-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s;
}

.question-group {
    margin-bottom: 32px;
}

.question-group label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.question-group .question-hint {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 4px;
}

.rating-options {
    display: flex;
    gap: 8px;
}

.rating-option {
    flex: 1;
    padding: 14px 8px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.rating-option:hover {
    border-color: rgba(200, 245, 96, 0.4);
    color: var(--text-primary);
}

.rating-option.selected {
    border-color: var(--accent);
    background: var(--accent-dim);
    color: var(--accent);
}

.injury-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

.injury-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.injury-chip:hover {
    border-color: rgba(239, 68, 68, 0.4);
    color: var(--text-primary);
}

.injury-chip.selected {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.injury-chip .chip-icon {
    font-size: 1.1rem;
}

.equipment-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.equipment-chip:hover {
    border-color: rgba(200, 245, 96, 0.4);
    color: var(--text-primary);
}

.equipment-chip.selected {
    border-color: var(--accent);
    background: var(--accent-dim);
    color: var(--accent);
}

.equipment-chip .chip-icon {
    font-size: 1.1rem;
}

.step-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 48px;
    gap: 16px;
}

.results-section {
    margin-top: 32px;
}

.score-display {
    text-align: center;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
}

.score-ring {
    width: 160px;
    height: 160px;
    margin: 0 auto 24px;
    position: relative;
}

.score-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-ring .ring-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 8;
}

.score-ring .ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 1.5s ease;
}

.score-ring .score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.5rem;
    font-weight: 800;
}

.score-ring .score-label {
    position: absolute;
    top: 65%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.score-breakdown {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 24px;
}

.score-breakdown-item {
    text-align: center;
}

.score-breakdown-item .breakdown-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.score-breakdown-item .breakdown-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.level-badge {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 16px;
}

.level-beginner { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.level-intermediate { background: rgba(234, 179, 8, 0.15); color: #eab308; }
.level-advanced { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

.workout-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 32px;
}

.workout-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.workout-card-header {
    padding: 24px 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.workout-card-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.workout-tag {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: 100px;
    background: var(--accent-dim);
    color: var(--accent);
}

.workout-card-body {
    padding: 20px 24px 24px;
}

.workout-exercise {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.workout-exercise:last-child {
    border-bottom: none;
}

.workout-exercise .exercise-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.workout-exercise .exercise-detail {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.workout-exercise .exercise-category {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.injury-notice {
    margin-top: 24px;
    padding: 16px 20px;
    background: rgba(234, 179, 8, 0.1);
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: #eab308;
}

.cta-section {
    text-align: center;
    margin-top: 48px;
    padding: 40px;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(200, 245, 96, 0.05) 100%);
    border: 1px solid rgba(200, 245, 96, 0.2);
    border-radius: var(--radius-lg);
}

.cta-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.contact-section {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 32px;
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 1rem;
    color: var(--text-secondary);
}

.contact-detail a {
    color: var(--accent);
    text-decoration: none;
}

.contact-detail a:hover {
    text-decoration: underline;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 60px 24px 24px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-col h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    color: var(--text-muted);
}

.footer-col p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-col a {
    color: var(--accent);
    text-decoration: none;
}

.footer-col a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open {
        display: flex;
    }

    .hero h1 {
        letter-spacing: -1px;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-image img {
        height: 300px;
    }

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

    .workout-cards {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .assessment-promo {
        padding: 40px 24px;
    }

    .score-breakdown {
        gap: 24px;
    }

    .rating-options {
        flex-wrap: wrap;
    }

    .rating-option {
        min-width: calc(50% - 4px);
    }
}