:root { 
    --primary: #5F28B4; 
    --accent: #fa9632; 
    --dark: #1a1a1a; 
    --light: #f8f9fa; 
    --gray: #6c757d; 
    --gray-light: #e9ecef; 
    --accent-hover: #e68a1c; 
    --text-on-accent: #000000; 
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.1); 
    --shadow-md: 0 8px 24px rgba(0,0,0,0.12); 
}

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

body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 
    line-height: 1.6; 
    color: var(--dark); 
    background: #fff; 
}

p { margin-bottom: 1rem; }

/* Global tricolor focus indicator */
*:focus-visible { 
    outline: 4px solid #FF00FF;
    outline-offset: 4px;
    box-shadow:
        0 0 0 4px #CCFF00,
        inset 0 0 0 4px #000000;
    z-index: 100;
}

/* HEADER & HERO */
header { 
    background: linear-gradient(135deg, var(--primary) 0%, #4a1f8f 100%); 
    color: white; 
    padding: 1rem 0; 
    position: sticky; 
    top: 0; 
    z-index: 100; 
    box-shadow: var(--shadow-sm); 
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

.header-content { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; }

.logo { font-size: 1.5rem; font-weight: bold; }

header nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 0.75rem 1.5rem; }
header nav a { color: white; text-decoration: none; margin-left: 0; font-size: 0.95rem; font-weight: 500; }
header nav a:hover { text-decoration: underline; }

/* Removed specific nav focus to inherit global tricolor style */

.hero { 
    background: linear-gradient(135deg, var(--primary) 0%, #4a1f8f 100%); 
    color: white; 
    padding: 6rem 2rem; 
    text-align: center; 
}

.hero h1 { 
    font-size: 3.5rem; 
    margin-bottom: 1.5rem; 
    line-height: 1.2; 
    text-align: center; 
}

.hero .subtitle { 
    font-size: 1.4rem; 
    opacity: 0.95; 
    max-width: 750px; 
    margin: 0 auto 1.5rem; 
    text-align: center;
}

.hero .course-dates { 
    font-size: 1.2rem; 
    font-weight: 700; 
    margin-bottom: 2.5rem; 
    color: var(--accent); 
    text-align: center;
}

.hero-cta { display: flex; gap: 1rem; justify-content: center; margin-bottom: 3rem; flex-wrap: wrap; }

.hero-stats { 
    display: flex; 
    justify-content: center; 
    gap: 4rem; 
    margin-top: 3rem; 
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 2rem;
}

.stat { text-align: center; } 
.stat-number { font-size: 2.5rem; font-weight: bold; color: var(--accent); display: block; }
.stat-label { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }

/* BUTTONS */
.btn { 
    display: inline-block; 
    padding: 1rem 2rem; 
    border-radius: 8px; 
    font-weight: 700; 
    text-decoration: none; 
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    border: none; 
    cursor: pointer; 
    font-size: 1.1rem; 
    text-align: center; 
    position: relative;
}
.btn:focus-visible { z-index: 3; }

.btn-primary { background: var(--accent); color: var(--text-on-accent); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn-primary:disabled { background: var(--gray); transform: none; cursor: not-allowed; }

.btn-secondary { background: rgba(255,255,255,0.1); color: white; border: 2px solid white; }
.btn-secondary:hover { background: white; color: var(--primary); }

.btn-full-width { width: 100%; }

/* Custom checkout button style (Purple) */
.btn-checkout { background: var(--primary); color: white; }
.btn-checkout:hover { background: #4a1f8f; transform: translateY(-2px); }
.btn-checkout:disabled { background: var(--gray); transform: none; cursor: not-allowed; }
/* FEATURES */
.features { padding: 5rem 2rem; background: var(--light); }
.section-title { font-size: 2.5rem; text-align: center; margin-bottom: 3.5rem; color: var(--dark); font-weight: 800; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }

.feature-card { 
    background: white; 
    padding: 2.5rem; 
    border-radius: 12px; 
    border-left: 5px solid var(--accent); 
    box-shadow: var(--shadow-sm); 
    transition: 0.3s; 
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.feature-icon { font-size: 2.5rem; margin-bottom: 1.5rem; display: block; }
.feature-card h3 { font-size: 1.4rem; margin-bottom: 1rem; color: var(--primary); }
/* UPDATED: Changed from var(--gray) to black */
.feature-card p { color: black; line-height: 1.7; margin-bottom: 0; }

/* FLIP CARDS LAYOUT */
.instructors { padding: 5rem 2rem; background: white; }
.instructors-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); 
    justify-content: center;
    gap: 2.5rem; 
    margin: 3rem auto 0;
    max-width: 980px;
}

.program { padding: 5rem 2rem; background: var(--light); }
.days-container { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); 
    gap: 2rem; 
    margin: 3rem auto 0;
    max-width: 1100px;
}

/* FLIP CARDS CORE */
.instructor-flip-card { height: 460px; perspective: 1200px; position: relative; width: 100%; min-width: 0; }
.day-card { height: 420px; perspective: 1200px; position: relative; width: 100%; min-width: 0; }

.instructor-flip-card-inner, .day-card-inner { 
    position: relative; 
    width: 100%; 
    height: 100%; 
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1); 
    transform-style: preserve-3d; 
}

.instructor-flip-card-inner.flipped, .day-card-inner.flipped { transform: rotateY(180deg); }

.card-side-hidden { 
    visibility: hidden; 
    pointer-events: none; 
    transition: visibility 0s linear 0.7s; 
}
.card-side-visible { 
    visibility: visible; 
    transition: visibility 0s linear 0s; 
}

/* FLIP CARDS FACES - RESET */
button.instructor-front, button.day-card-front {
    appearance: none; border: none; background: none; padding: 0; margin: 0;
    font-family: inherit; font-size: inherit; width: 100%; height: 100%;
    position: absolute; backface-visibility: hidden; border-radius: 12px; 
    display: flex; flex-direction: column; cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.instructor-back, .day-card-back {
    position: absolute; width: 100%; height: 100%; backface-visibility: hidden; 
    border-radius: 12px; display: flex; flex-direction: column; 
    transform: rotateY(180deg); box-shadow: var(--shadow-md);
}

/* INSTRUCTORS STYLE */
button.instructor-front { 
    background: white; 
    border: 3px solid var(--accent); 
    border-top: 5px solid var(--primary); 
    overflow: hidden; 
}
.instructor-image { 
    width: 100%; 
    height: 60%; 
    object-fit: contain; 
    object-position: center; 
    display: block; 
    background: var(--accent); 
    border-bottom: 3px solid var(--accent); 
}
.instructor-info-front { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; justify-content: center; text-align: left; }
.instructor-info-front h3 { font-size: 1.5rem; color: var(--dark); margin-bottom: 0.3rem; font-weight: 700; }
.instructor-company { color: var(--primary); font-weight: 700; font-size: 0.9rem; margin-bottom: 0.5rem; text-transform: uppercase; }
/* UPDATED: Changed from var(--gray) to black */
.instructor-bio { font-size: 0.95rem; color: black; line-height: 1.5; }

.instructor-back { background: var(--primary); color: white; border-top: 5px solid var(--accent); padding: 2rem; justify-content: space-between; }
.instructor-credentials { list-style: none; text-align: left; }
.instructor-credentials li { padding: 0.6rem 0; font-size: 0.95rem; display: flex; gap: 0.8rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.instructor-credentials li:last-child { border-bottom: none; }
.instructor-credentials li::before { content: '✓'; color: var(--accent); font-weight: bold; }

.instructor-cta-link { 
    display: block; background: var(--accent); color: var(--text-on-accent); 
    padding: 0.8rem 1.5rem; border-radius: 6px; text-decoration: none; 
    font-weight: 700; margin-top: 1rem; transition: 0.3s; text-align: center; 
}

#instructors, #program, #pricing, #faq { scroll-margin-top: 140px; }

body.high-zoom header { position: static; }
body.high-zoom .header-content { flex-direction: column; }
body.high-zoom header nav { justify-content: center; }
body.high-zoom .instructors-grid,
body.high-zoom .days-container,
body.high-zoom .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
}
body.high-zoom .price-card--featured { transform: scale(1); }
body.high-zoom #instructors,
body.high-zoom #program,
body.high-zoom #pricing,
body.high-zoom #faq { scroll-margin-top: 24px; }

/* DAYS STYLE */
button.day-card-front { 
    background: white; 
    border: 3px solid var(--primary); 
    border-top: 5px solid var(--primary); 
    padding: 2.2rem 2.2rem 5rem 2.2rem; 
}

.day-card-back { background: var(--primary); color: white; border-top: 5px solid var(--accent); padding: 2.5rem; justify-content: space-between; }

.day-number { 
    display: flex; align-items: center; justify-content: center; 
    background: var(--primary); color: white; width: 45px; height: 45px; 
    border-radius: 50%; font-size: 1.2rem; font-weight: bold; margin-bottom: 0.8rem; 
}

.day-card-front h3 { font-size: 1.25rem; margin-bottom: 0.2rem; color: var(--dark); text-align: left; font-weight: 800; }

.day-subtitle {
    color: var(--primary); 
    text-transform: uppercase;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    text-align: left;
    letter-spacing: 0.5px;
}

.day-card-front ul { list-style: none; flex: 1; display: flex; flex-direction: column; gap: 0.5rem; }

.day-card-front li { 
    font-size: 0.9rem; 
    color: #000000; 
    display: flex; 
    gap: 0.5rem; 
    text-align: left;
    align-items: flex-start; 
}

.day-card-front li span {
    flex: 1; 
}

.day-card-front li strong {
    color: inherit; 
}

.day-card-front li::before { 
    content: '•'; 
    color: var(--primary); 
    font-weight: bold; 
    font-size: 1.5em; 
    line-height: 1;   
    flex-shrink: 0;   
    margin-top: -3px; 
}

.card-footer-info {
    position: absolute;
    bottom: 2rem;
    left: 0;
    width: 100%;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    pointer-events: none;
}

.day-price { font-size: 1.8rem; font-weight: 800; color: var(--accent); margin: 0.5rem 0; }

.checkbox-wrapper { background: rgba(255,255,255,0.1); padding: 1rem; border-radius: 8px; transition: 0.2s; }
.checkbox-wrapper:hover { background: rgba(255,255,255,0.2); }
.day-checkbox { width: 22px; height: 22px; accent-color: var(--accent); cursor: pointer; }

/* PRICING */
.pricing { padding: 5rem 2rem; background: white; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; max-width: 1000px; margin: 0 auto; overflow: visible; }
.price-card { 
    background: white; border: 2px solid var(--gray-light); border-radius: 16px; 
    padding: 3rem 2rem; text-align: center; position: relative; display: flex; flex-direction: column; 
    transition: 0.3s; overflow: visible; scroll-margin-top: 120px;
}
.price-card--featured { border: 4px solid var(--primary); transform: scale(1.05); box-shadow: 0 20px 40px rgba(95, 40, 180, 0.12); }
.price-card__badge { 
    position: absolute; top: -18px; left: 50%; transform: translateX(-50%); 
    background: var(--accent); color: black; padding: 0.6rem 1.5rem; 
    border-radius: 30px; font-weight: 800; font-size: 0.9rem; text-transform: uppercase;
}
.price { font-size: 3.5rem; font-weight: 900; color: var(--primary); margin: 1rem 0; }

/* UPDATED: Explicitly set price-period to black */
.price-period { font-size: 0.95rem; color: black; margin-bottom: 1.5rem; }

.price-features { list-style: none; margin: 1.5rem 0 2.5rem 0; text-align: left; flex: 1; }
.price-features li { padding: 0.8rem 0; border-bottom: 1px solid var(--gray-light); color: black; font-size: 1rem; }
.price-features li:last-child { border-bottom: none; }
.price-features li::before { content: '✓'; color: var(--accent); font-weight: bold; margin-right: 0.8rem; }

/* DROPDOWN IN PRICING */
.pricing-dropdown {
    margin-top: 1rem;
    background: var(--light);
    border: 1px solid var(--gray-light);
    border-radius: 8px;
    text-align: left;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* UPDATED: Removed padding from item, now on label */
.pricing-dropdown-item {
    padding: 0;
    border-bottom: 1px solid var(--gray-light);
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s;
}

.pricing-dropdown-item:last-child { border-bottom: none; }

.pricing-dropdown-item:hover {
    background: #f0f0f0;
}
.pricing-dropdown-item:focus-within {
    background: #fff;
    box-shadow: inset 0 0 0 3px #193146, inset 0 0 0 6px #F9F9F9;
}

/* UPDATED: Label fills the entire row, larger hit area */
.pricing-dropdown-item label {
    width: 100%;
    height: 100%;
    padding: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: black;
    font-weight: 500;
}

.pricing-dropdown-item input {
    width: 20px;
    height: 20px;
    accent-color: var(--accent);
    margin-right: 12px;
    cursor: pointer;
}
.pricing-dropdown-item input:focus-visible {
    outline: 2px #F9F9F9 solid;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px #193146;
}

.checkout-summary { 
    margin-top: 4rem; padding: 2.5rem; background: var(--light); 
    border-radius: 16px; border: 2px dashed var(--gray-light);
    max-width: 900px; margin-left: auto; margin-right: auto; 
}
.checkout-summary h3 { text-align: center; }
.checkout-overview {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    align-items: center;
}
.checkout-step {
    margin: 2rem auto 0;
    max-width: 700px;
    text-align: left;
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    background: white;
    padding: 1.5rem;
}
.checkout-step[hidden] { display: none; }
.checkout-step-title {
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
}
.checkout-step-note {
    color: var(--gray);
    margin-top: 1rem;
    font-size: 0.9rem;
    text-align: center;
}
.checkout-actions {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}
.checkout-helper {
    color: var(--gray);
    margin-top: 1rem;
    font-size: 0.95rem;
    text-align: center;
}
.checkout-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}
.checkout-field {
    display: flex;
    flex-direction: column;
}
.checkout-input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--gray);
    border-radius: 4px;
    font-size: 1rem;
}
.checkout-textarea {
    min-height: 8rem;
    resize: vertical;
}
.confirmation-selection {
    color: var(--dark);
    font-weight: 600;
    margin-bottom: 1.5rem;
}
.required-note {
    color: var(--dark);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}
.checkout-error-summary {
    border: 2px solid #b00020;
    border-radius: 8px;
    background: #fff4f6;
    color: #7a0018;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}
.checkout-error-summary[hidden] { display: none; }
.field-error {
    display: none;
    color: #b00020;
    font-size: 0.9rem;
    margin-top: 0.35rem;
}
.field-error.active { display: block; }
.transfer-list {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}
.transfer-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--gray-light);
}
.transfer-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.transfer-value {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: center;
    justify-content: flex-end;
    text-align: right;
}
.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--primary);
    background: white;
    color: var(--primary);
    border-radius: 999px;
    padding: 0.35rem 0.8rem;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
}
.copy-btn:hover {
    background: var(--primary);
    color: white;
}
.summary-flex { display: flex; justify-content: center; gap: 4rem; flex-wrap: wrap; margin: 2rem 0; }
.summary-item { text-align: center; }
.summary-label { color: black; text-transform: uppercase; font-size: 0.8rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.5rem; }
.summary-value { font-size: 1.8rem; font-weight: 800; color: var(--dark); }

/* FAQ */
.faq { padding: 5rem 2rem; background: var(--light); }
.faq-container { max-width: 850px; margin: 3rem auto 0; }
.faq-item { background: white; border-radius: 12px; margin-bottom: 1.5rem; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-light); }
.faq-question { 
    width: 100%; padding: 1.5rem 2rem; text-align: left; background: none; border: none; 
    font-weight: 700; display: flex; justify-content: space-between; align-items: center; 
    cursor: pointer; color: var(--dark); font-size: 1.1rem; 
}
.faq-question:hover { color: var(--primary); }

/* UPDATED: Changed from var(--gray) to black */
.faq-answer { padding: 0 2rem 2rem 2rem; display: none; line-height: 1.8; color: black; border-top: 1px solid var(--gray-light); padding-top: 1.5rem; }
.faq-answer.active { display: block; }
.faq-icon { transition: 0.3s; color: var(--accent); font-size: 0.8rem; }
.faq-item.active .faq-icon { transform: rotate(180deg); }

/* FOOTER */
footer { background: var(--dark); color: white; padding: 4rem 2rem; text-align: center; }
.footer-contact a { color: var(--accent); text-decoration: none; font-weight: 700; }
.footer-bottom { margin-top: 3rem; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 2rem; font-size: 0.9rem; opacity: 0.7; }

/* ACCESSIBILITY UTILS */
.skip-link { position: absolute; top: -100px; left: 0; background: var(--accent); color: black; padding: 1rem; z-index: 1000; font-weight: bold; }
.skip-link:focus { top: 0; }

.aria-alert-region { 
    position: fixed; bottom: 30px; right: 30px; background: var(--primary); color: white; 
    padding: 1.2rem 2rem; border-radius: 12px; z-index: 1000; box-shadow: var(--shadow-md);
    display: none; border-left: 5px solid var(--accent);
}
.aria-alert-region.show { display: block; animation: slideIn 0.4s ease-out; }

@keyframes slideIn { from { transform: translateY(100px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

@media (max-width: 992px) {
    header { position: static; }
    .container { padding: 0 1.25rem; }
    .header-content { flex-direction: column; }
    header nav { justify-content: center; }
    .instructors-grid { max-width: 560px; }
    .days-container { max-width: 560px; }
    .hero h1 { font-size: 2.5rem; }
    .hero-stats { gap: 2rem; flex-wrap: wrap; }
    .price-card--featured { transform: scale(1); }
    #instructors, #program, #pricing, #faq { scroll-margin-top: 24px; }
}

@media (max-width: 900px) {
    .pricing-grid { grid-template-columns: 1fr; max-width: 560px; }
}

@media (max-width: 640px) {
    header { position: static; }
    .container { padding: 0 1rem; }
    .hero { padding: 4rem 1rem; }
    .hero h1 { font-size: 2rem; }
    .hero .subtitle { font-size: 1.1rem; }
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; }
    .hero-stats { flex-direction: column; gap: 1.25rem; }
    .section-title { font-size: 2rem; }
    .pricing { padding: 4rem 1rem; }
    .pricing-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .price-card { padding: 2rem 1.25rem; }
    .price { font-size: 2.75rem; }
    .checkout-summary { padding: 1.5rem 1rem; }
    .checkout-overview { gap: 1rem; }
    .checkout-form-grid { grid-template-columns: 1fr; }
    .transfer-row { flex-direction: column; }
    .transfer-value { justify-content: flex-start; text-align: left; }
    .checkout-actions .btn,
    #orderConfirmation .btn { width: 100%; }
    .aria-alert-region { left: 1rem; right: 1rem; bottom: 1rem; }
}