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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #8b5cf6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

.container {
    /* max-width: 1200px; */
    width: 60%;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.6rem 1.0rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-testing {
    background: #ff6b35;
    color: var(--white);
    border: none;
    padding: 0.6rem 1.0rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-testing:hover {
    background: #e55a2b;
}

.btn-large {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
}

.btn-large:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 25px 0;
    text-align: left;
}

.hero-content h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-container {
    width: 60%;
}

@media (max-width: 768px) {
    .hero-container {
        width: 100%;
    }
    .container {
        width: 100%;
    }
}

.about-section {
    padding: 20px 0;
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image .coach-placeholder {
    /* width: 250px; */
    /* height: 250px; */
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.coach-icon {
    font-size: 8rem;
}

.about-content h2 {
    color: var(--primary-color);
}

.about-content h3 {
    color: orange;
    font-size: 1.8rem;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.credentials {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 8px;
}

.credentials h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.credentials ul {
    list-style: none;
    text-align: left;
}

.credentials li {
    padding: 0.1rem 0;
    color: var(--text-dark);
    text-align: left;
}

#calendar-button button {
    font-size: 28px;       /* increase text size */
    padding: 16px 28px;    /* increase height/width */
    border-radius: 4px;    /* optional: rounder corners */
    color: var(--white);
}

.testimonials-section {
    padding: 80px 0;
}

.testimonials-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.15);
}

.testimonial-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    margin-right: 1rem;
}

.testimonial-info h4 {
    margin-bottom: 0.25rem;
}

.testimonial-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.testimonial-rating {
    color: #fbbf24;
    margin-bottom: 1rem;
}

.testimonial-content {
    color: var(--text-dark);
    line-height: 1.6;
}

.booking-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.booking-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.booking-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

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

.auth-required {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

.dashboard-section {
    padding: 80px 0;
}

.dashboard-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.sessions-list {
    display: grid;
    gap: 1.5rem;
}

.session-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.5rem;
    align-items: center;
}

.session-date {
    text-align: center;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
    min-width: 100px;
}

.session-date .day {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.session-date .month {
    color: var(--text-light);
    text-transform: uppercase;
    font-size: 0.9rem;
}

.session-info h3 {
    margin-bottom: 0.5rem;
}

.session-info p {
    color: var(--text-light);
}

.session-status {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.session-status.scheduled {
    background: #dbeafe;
    color: var(--primary-color);
}

.contact-section {
    padding: 15px 0;
    background: var(--bg-light);
}

.contact-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.contact-item {
    text-align: center;
    padding: 1rem;
    background: var(--white);
    border-radius: 12px;
}

.contact-item .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

footer {
    background: var(--text-dark);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: var(--white);
    margin: 10% auto;
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    position: relative;
}

.close {
    color: var(--text-light);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--text-dark);
}

#authForm input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
}

#authForm input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.toggle-auth {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-light);
}

.toggle-auth a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }

    .nav-menu a {
        display: none;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .lead {
        font-size: 1rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .session-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

.answer-option {
    display: block; 
    width: 100%; 
    padding: 15px; 
    margin: 10px 0; 
    background: white; 
    border: 1px solid lightgray; 
    border-radius: 8px; 
    cursor: pointer; 
    text-align: left;
    transition: all 0.3s ease;
}

.answer-option-selected {
    border: 2px solid var(--primary-color); 
}