:root {
    --bp-teal: #0d9488;
    --bp-teal-dark: #0f766e;
    --bp-coral: #ea580c;
    --bp-navy: #0c1222;
    --bp-font: 'Outfit', ui-sans-serif, system-ui, sans-serif;
}

.bp-bg {
    min-height: 100vh;
    background: linear-gradient(145deg, #0c1222 0%, #134e4a 45%, #9a3412 100%);
    font-family: var(--bp-font);
}

.bp-mobile-brand {
    padding: 1rem 1.25rem 0.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.bp-split {
    display: grid;
    min-height: 100vh;
}

@media (min-width: 1024px) {
    .bp-split {
        grid-template-columns: 38% 1fr;
    }
}

.bp-brand {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    padding: 2.5rem;
    color: #fff;
}

@media (min-width: 1024px) {
    .bp-brand {
        display: flex;
    }
}

.bp-brand h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.bp-brand-steps {
    margin-top: 2rem;
    list-style: none;
    padding: 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
}

.bp-brand-steps li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

.bp-brand-steps li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.45rem;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 999px;
    background: var(--bp-teal);
}

.bp-main {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem;
}

.bp-card {
    width: 100%;
    max-width: 28rem;
    background: rgba(255, 255, 255, 0.96);
    border-radius: 1.25rem;
    padding: 2rem;
    box-shadow: 0 25px 60px -12px rgba(0, 0, 0, 0.35);
}

.bp-card-wide {
    max-width: 40rem;
}

.bp-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bp-navy);
    letter-spacing: -0.03em;
}

.bp-sub {
    margin-top: 0.35rem;
    font-size: 0.875rem;
    color: #64748b;
}

.bp-input {
    width: 100%;
    margin-top: 0.35rem;
    border-radius: 0.75rem;
    border: 1px solid #cbd5e1;
    padding: 0.875rem 1rem;
    font-size: 1rem;
}

.bp-input:focus {
    outline: none;
    border-color: var(--bp-teal);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.2);
}

.bp-btn {
    display: inline-flex;
    width: 100%;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.25rem;
    border-radius: 0.75rem;
    padding: 0.875rem 1.25rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--bp-teal), var(--bp-teal-dark));
    box-shadow: 0 4px 14px rgba(13, 148, 136, 0.4);
}

.bp-btn:hover {
    filter: brightness(1.05);
}

.bp-btn-bkash {
    background: linear-gradient(135deg, #e2136e, #c4105e);
    box-shadow: 0 4px 14px rgba(226, 19, 110, 0.35);
}

.bp-alert {
    margin-bottom: 1rem;
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

.bp-alert-ok {
    background: #ecfdf5;
    color: #065f46;
}

.bp-alert-err {
    background: #fff1f2;
    color: #9f1239;
}

.bp-invoice-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    border-radius: 0.75rem;
    border: 1px solid #e2e8f0;
    padding: 1rem;
    margin-top: 0.75rem;
}

.bp-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.bp-stat {
    border-radius: 0.75rem;
    background: #f8fafc;
    padding: 0.875rem;
}

.bp-stat strong {
    display: block;
    font-size: 1.25rem;
    color: var(--bp-teal-dark);
}

.bp-link {
    font-size: 0.875rem;
    color: var(--bp-teal-dark);
    text-decoration: underline;
}

.bp-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 0.5rem;
}

.bp-tab {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #64748b;
    text-decoration: none;
}

.bp-tab:hover {
    background: #f1f5f9;
    color: var(--bp-navy);
}

.bp-tab-active {
    background: rgba(13, 148, 136, 0.12);
    color: var(--bp-teal-dark);
    font-weight: 600;
}

.bp-pay-form {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 10rem;
}

.bp-topbar {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1rem;
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(12px);
    background: rgba(12, 18, 34, 0.75);
}

.bp-topbar-inner {
    max-width: 40rem;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.bp-topbar-kicker {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(45, 212, 191, 0.85);
}

.bp-topbar-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: white;
}

.bp-theme-btn {
    height: 2.25rem;
    width: 2.25rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    cursor: pointer;
}

@media (max-width: 1023px) {
    .bp-main {
        padding: 1.25rem 1rem 2rem;
        align-items: flex-start;
    }

    .bp-card {
        padding: 1.5rem;
    }

    .bp-card-wide {
        max-width: 100%;
    }

    .bp-summary-grid {
        grid-template-columns: 1fr;
    }

    .bp-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .bp-tab {
        white-space: nowrap;
    }
}

html.portal-dark .bp-card {
    background: rgba(15, 23, 42, 0.95);
    color: #f1f5f9;
}

html.portal-dark .bp-title {
    color: #f8fafc;
}

html.portal-dark .bp-sub,
html.portal-dark .bp-stat {
    color: #94a3b8;
    background: rgba(30, 41, 59, 0.8);
}

html.portal-dark .bp-input {
    background: rgb(30 41 59);
    border-color: rgba(148, 163, 184, 0.2);
    color: #f1f5f9;
}

html.portal-dark .bp-invoice-row {
    border-color: rgba(148, 163, 184, 0.15);
}

html.portal-dark .bp-tab {
    color: #94a3b8;
}

html.portal-dark .bp-tab-active {
    background: rgba(13, 148, 136, 0.2);
    color: #5eead4;
}