:root {
    --bk-gold-primary: #bc9252;
    --bk-gold-light:   #d4aa6e;
    --bk-gold-glow:    rgba(188, 146, 82, 0.25);
    --bk-dark-bg:      #0b0e17;
    --bk-card-bg:      rgba(18, 24, 38, 0.85);
    --bk-input-bg:     #131a2a;
    --bk-border:       rgba(255, 255, 255, 0.08);
    --bk-text-main:    #f8fafc;
    --bk-text-sub:     #94a3b8;
    --bk-radius:       20px;
}

body {
    background: var(--bk-dark-bg);
    color: var(--bk-text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

.bk-page-wrapper {
    min-height: 100vh;
    padding-top: 100px;
    padding-bottom: 80px;
    background: radial-gradient(circle at 50% 0%, rgba(188, 146, 82, 0.12) 0%, transparent 60%),
                var(--bk-dark-bg);
}

.bk-container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 20px;
}


.bk-header-center {
    text-align: center;
    margin-bottom: 32px;
}

.bk-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(188, 146, 82, 0.12);
    border: 1px solid rgba(188, 146, 82, 0.3);
    border-radius: 30px;
    color: var(--bk-gold-light);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.bk-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 10px;
    background: linear-gradient(135deg, #ffffff 0%, var(--bk-gold-light) 50%, var(--bk-gold-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bk-subtitle {
    color: var(--bk-text-sub);
    font-size: 0.95rem;
    margin: 0;
}


.bk-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 30px;
    align-items: start;
}


.bk-card {
    background: var(--bk-card-bg);
    border: 1px solid var(--bk-border);
    border-radius: var(--bk-radius);
    padding: 32px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    backdrop-filter: blur(12px);
}

.bk-section-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--bk-gold-light);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--bk-border);
}

.bk-form-group {
    margin-bottom: 20px;
}

.bk-form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--bk-text-sub);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bk-form-group label span.req {
    color: var(--bk-gold-light);
}

.bk-input, .bk-select, .bk-textarea {
    width: 100%;
    background: var(--bk-input-bg);
    border: 1px solid var(--bk-border);
    border-radius: 12px;
    padding: 14px 16px;
    color: var(--bk-text-main);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.25s ease;
    box-sizing: border-box;
}

.bk-input:focus, .bk-select:focus, .bk-textarea:focus {
    border-color: var(--bk-gold-primary);
    box-shadow: 0 0 0 4px var(--bk-gold-glow);
}

.bk-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.76rem;
    color: #64748b;
    margin-top: 6px;
}

.bk-hint i {
    color: var(--bk-gold-light);
}

.bk-hint.whatsapp i {
    color: #25D366;
}


.bk-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--bk-input-bg);
    padding: 5px;
    border-radius: 14px;
    gap: 5px;
    margin-bottom: 22px;
}

.bk-tab {
    padding: 12px;
    text-align: center;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--bk-text-sub);
    transition: all 0.25s;
    user-select: none;
}

.bk-tab.active {
    background: linear-gradient(135deg, var(--bk-gold-light), var(--bk-gold-primary));
    color: #0b0e17;
    box-shadow: 0 4px 15px var(--bk-gold-glow);
}


.bk-steppers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.bk-stepper-box {
    background: var(--bk-input-bg);
    border: 1px solid var(--bk-border);
    border-radius: 14px;
    padding: 14px 10px;
    text-align: center;
}

.bk-stepper-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--bk-text-sub);
    display: block;
    margin-bottom: 2px;
}

.bk-stepper-sub {
    font-size: 0.68rem;
    color: #64748b;
    display: block;
    margin-bottom: 10px;
}

.bk-stepper-ctrl {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.bk-step-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--bk-border);
    color: #ffffff;
    font-weight: 800;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.bk-step-btn:hover {
    background: rgba(188, 146, 82, 0.2);
    border-color: var(--bk-gold-primary);
}

.bk-step-val {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--bk-gold-light);
    min-width: 20px;
}


.bk-checkbox-wrap {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--bk-border);
    border-radius: 12px;
    padding: 14px;
    cursor: pointer;
    margin-bottom: 26px;
}

.bk-checkbox-wrap input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--bk-gold-primary);
    cursor: pointer;
    margin-top: 2px;
}

.bk-checkbox-text {
    font-size: 0.83rem;
    color: var(--bk-text-sub);
    line-height: 1.4;
}

.bk-checkbox-text strong {
    color: var(--bk-text-main);
}


.bk-submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--bk-gold-light), var(--bk-gold-primary));
    color: #0b0e17;
    font-size: 1.05rem;
    font-weight: 800;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 30px rgba(188, 146, 82, 0.35);
    transition: all 0.25s;
}

.bk-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(188, 146, 82, 0.5);
}


.bk-summary-card {
    position: sticky;
    top: 100px;
    background: var(--bk-card-bg);
    border: 1px solid var(--bk-border);
    border-radius: var(--bk-radius);
    padding: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    backdrop-filter: blur(12px);
}

.bk-tour-thumb {
    width: 100%;
    height: 170px;
    border-radius: 14px;
    object-fit: cover;
    margin-bottom: 16px;
    border: 1px solid var(--bk-border);
}

.bk-tour-name {
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0 0 8px;
    color: #ffffff;
}

.bk-tour-meta {
    font-size: 0.8rem;
    color: var(--bk-text-sub);
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
}

.bk-price-breakdown {
    background: var(--bk-input-bg);
    border-radius: 14px;
    padding: 16px;
    margin-top: 16px;
}

.bk-price-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--bk-text-sub);
    margin-bottom: 8px;
}

.bk-price-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--bk-border);
    font-size: 1rem;
    font-weight: 700;
    color: #ffffff;
}

.bk-total-num {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--bk-gold-light);
}


@media (max-width: 991px) {
    .bk-grid {
        grid-template-columns: 1fr;
    }

    .bk-summary-card {
        order: -1; 
        position: static;
        margin-bottom: 24px;
    }
}

@media (max-width: 576px) {
    .bk-page-wrapper {
        padding-top: 80px;
        padding-bottom: 50px;
    }

    .bk-card, .bk-summary-card {
        padding: 20px 16px;
        border-radius: 16px;
    }

    .bk-title {
        font-size: 1.65rem;
    }

    .bk-steppers-grid {
        grid-template-columns: 1fr; 
        gap: 10px;
    }

    .bk-stepper-box {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 16px;
        text-align: left;
    }

    .bk-stepper-sub {
        margin-bottom: 0;
    }
}