/* CSS variables */
:root {
    --color-primary: #0d6efd;
    --color-primary-dark: #0b5ed7;
    --color-secondary: #198754;
    --color-secondary-dark: #157347;
    --color-text: #212529;
    --color-text-light: #6c757d;
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-border: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --radius: 0.5rem;
    --spacing: 1rem;
    --container-width: 1200px;
    --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

/* Reset & base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: 1.5;
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing);
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 100;
}
.skip-link:focus {
    top: 0;
}

/* Header */
.header {
    background-color: var(--color-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 10;
}
.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.header__logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary);
    text-decoration: none;
}
.burger-toggle {
    display: none;
}
.burger-icon {
    display: none;
    cursor: pointer;
    color: var(--color-text);
}
.nav__list {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}
.nav__link {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}
.nav__link:hover,
.nav__link:focus-visible {
    border-bottom-color: var(--color-primary);
    outline: none;
}

/* Mobile menu */
@media (max-width: 768px) {
    .burger-icon {
        display: block;
    }
    .nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        box-shadow: var(--shadow-md);
        padding: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s, opacity 0.3s;
        z-index: 9;
    }
    .burger-toggle:checked ~ .nav {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav__list {
        flex-direction: column;
        gap: 0.5rem;
    }
    .nav__item {
        width: 100%;
    }
    .nav__link {
        display: block;
        padding: 0.75rem;
        border-bottom: 1px solid var(--color-border);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}
.btn--primary {
    background-color: var(--color-primary);
    color: white;
}
.btn--primary:hover,
.btn--primary:focus-visible {
    background-color: var(--color-primary-dark);
}
.btn--secondary {
    background-color: var(--color-secondary);
    color: white;
}
.btn--secondary:hover,
.btn--secondary:focus-visible {
    background-color: var(--color-secondary-dark);
}
.btn:active {
    transform: scale(0.98);
}

/* Sections */
section {
    padding: 4rem 0;
}
.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--color-text);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--color-bg-light) 0%, #e9ecef 100%);
    text-align: center;
}
.hero__title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}
.hero__subtitle {
    font-size: 1.2rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto 2rem;
}
.hero__actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Advantages grid */
.advantages__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.advantage-card {
    background: var(--color-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform 0.2s;
}
.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.advantage-card__icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.advantage-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}
.advantage-card__text {
    color: var(--color-text-light);
}

/* How to play steps */
.howto__steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    counter-reset: step-counter;
}
.step {
    text-align: center;
    position: relative;
    padding: 1.5rem;
    background: var(--color-bg-light);
    border-radius: var(--radius);
}
.step__number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    line-height: 40px;
    font-weight: bold;
    margin-bottom: 1rem;
}
.step__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}
.step__text {
    color: var(--color-text-light);
}

/* Strategies grid */
.strategies__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.strategy-card {
    background: var(--color-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-primary);
}
.strategy-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}
.strategy-card__desc {
    color: var(--color-text-light);
}

/* Withdrawal */
.withdrawal__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}
.withdrawal__info {
    background: var(--color-bg-light);
    padding: 1.5rem;
    border-radius: var(--radius);
}
.withdrawal__subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-primary);
}
.withdrawal__list {
    list-style: none;
}
.withdrawal__list li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}
.withdrawal__list li::before {
    content: "✓";
    color: var(--color-secondary);
    position: absolute;
    left: 0;
}

/* Bets */
.bets__cards {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 2rem;
}
.bet-card {
    background: var(--color-bg-light);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    min-width: 200px;
    box-shadow: var(--shadow-sm);
}
.bet-card--full {
    flex-basis: 100%;
    max-width: 400px;
}
.bet-card__label {
    display: block;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}
.bet-card__value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--color-primary);
}
.bets__note {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* Reviews */
.reviews__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}
.review-card {
    background: var(--color-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}
.review-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}
.review-card__name {
    font-weight: bold;
    font-size: 1.1rem;
}
.review-card__rating {
    color: #ffc107;
    letter-spacing: 2px;
}
.review-card__date {
    display: block;
    color: var(--color-text-light);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}
.review-card__text {
    font-style: italic;
}

/* FAQ */
.faq__list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
}
.faq-item__question {
    padding: 1rem;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    position: relative;
}
.faq-item__question::-webkit-details-marker {
    display: none;
}
.faq-item__question::after {
    content: "+";
    position: absolute;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--color-primary);
}
details[open] .faq-item__question::after {
    content: "−";
}
.faq-item__answer {
    padding: 0 1rem 1rem 1rem;
    color: var(--color-text-light);
}

/* Contacts */
.contacts__grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}
.contacts__info p {
    margin-bottom: 0.5rem;
}
.contacts__info a {
    color: var(--color-primary);
    text-decoration: none;
}
.contacts__info a:hover {
    text-decoration: underline;
}
.contacts__note {
    margin-top: 1rem;
    color: var(--color-text-light);
}
.contacts__form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: 0.25rem;
    font-weight: 500;
}
.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Footer */
.footer {
    background: var(--color-text);
    color: white;
    padding: 2rem 0;
    margin-top: 2rem;
}
.footer__info {
    text-align: center;
    opacity: 0.9;
    font-size: 0.9rem;
}
.footer__info p {
    margin-bottom: 0.5rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero__title {
        font-size: 2rem;
    }
    .section-title {
        font-size: 1.75rem;
    }
    .withdrawal__content {
        grid-template-columns: 1fr;
    }
    .contacts__grid {
        grid-template-columns: 1fr;
    }
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
    }
    .advantages__grid {
        grid-template-columns: 1fr;
    }
}

/* Safe additions (do not break existing logic) */
.nav__link.is-active {
    border-bottom-color: var(--color-primary);
}
.burger-icon:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}
.burger-icon__text {
    display: inline-block;
    font-weight: 600;
}
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}