:root {
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #707579;
    --tg-theme-link-color: #3390ec;
    --tg-theme-button-color: #3390ec;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #f4f4f5;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--tg-theme-secondary-bg-color, #f4f4f5);
    color: var(--tg-theme-text-color, #000000);
}

header {
    background-color: var(--tg-theme-bg-color, #ffffff);
    padding: 1rem;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--tg-theme-link-color, #3390ec);
}

header p {
    margin: 0.25rem 0 0;
    font-size: 0.9rem;
    color: var(--tg-theme-hint-color, #707579);
}

main {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background-color: var(--tg-theme-bg-color, #ffffff);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.card-content {
    padding: 1rem;
}

.card-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
}

.card-content p {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--tg-theme-hint-color, #707579);
    line-height: 1.4;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-weight: bold;
    color: var(--tg-theme-text-color, #000000);
}

.btn {
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 500;
}

.check-btn {
    background-color: var(--tg-theme-button-color, #3390ec);
    color: var(--tg-theme-button-text-color, #ffffff);
}

/* Modal styling */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--tg-theme-bg-color, #ffffff);
    padding: 1.5rem;
    border-radius: 16px;
    width: 90%;
    max-width: 400px;
    position: relative;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--tg-theme-hint-color, #707579);
}

.modal-content h2 {
    margin-top: 0;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 0.4rem;
    color: var(--tg-theme-hint-color, #707579);
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    box-sizing: border-box;
    background-color: var(--tg-theme-secondary-bg-color, #f4f4f5);
    color: var(--tg-theme-text-color, #000000);
}

.book-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--tg-theme-button-color, #3390ec);
    color: var(--tg-theme-button-text-color, #ffffff);
    font-size: 1rem;
    margin-top: 0.5rem;
}