/* MTech Balance Module CSS */
:root {
    --mb-bg: #0d141d;
    --mb-panel: #111a24;
    --mb-card: #141f2b;
    --mb-input: #0f1923;
    --mb-border: rgba(255,255,255,0.08);
    --mb-green: #22c55e;
    --mb-green-dim: rgba(34,197,94,0.1);
    --mb-green-border: rgba(34,197,94,0.25);
    --mb-orange: #f59e0b;
    --mb-red: #e64a4a;
    --mb-text: #f2f6fa;
    --mb-muted: #94a3b8;
    --mb-hint: #475569;
}

.mb-wrap {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--mb-text);
}

/* Hero */
.mb-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--mb-panel);
    border: 1px solid var(--mb-border);
    border-radius: 14px;
    padding: 24px 28px;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.mb-hero-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--mb-hint);
    margin-bottom: 6px;
}

.mb-hero-amount {
    font-size: 36px;
    font-weight: 800;
    color: var(--mb-text);
    line-height: 1;
}

.mb-hero-amount span {
    color: var(--mb-green);
}

.mb-hero-stats {
    display: flex;
    gap: 12px;
}

.mb-stat {
    background: var(--mb-input);
    border-radius: 10px;
    padding: 12px 16px;
    text-align: right;
    min-width: 100px;
}

.mb-stat-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mb-hint);
    margin-bottom: 4px;
}

.mb-stat-val {
    font-size: 16px;
    font-weight: 700;
}

.mb-stat-val.green { color: var(--mb-green); }
.mb-stat-val.red   { color: var(--mb-red); }
.mb-stat-val.orange{ color: var(--mb-orange); }

/* Tabs */
.mb-tabs {
    display: flex;
    border-bottom: 1px solid var(--mb-border);
    margin-bottom: 28px;
    gap: 0;
}

.mb-tab {
    padding: 12px 24px;
    font-size: 13px;
    font-weight: 600;
    color: var(--mb-hint);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.2s, border-color 0.2s;
    user-select: none;
}

.mb-tab:hover { color: var(--mb-muted); }
.mb-tab.active {
    color: var(--mb-green);
    border-bottom-color: var(--mb-green);
}

/* Tab content */
.mb-tab-content { display: none; }
.mb-tab-content.active { display: block; }

/* Section title */
.mb-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--mb-hint);
    margin-bottom: 16px;
}

/* Tier cards */
.mb-tiers {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 28px;
}

@media (max-width: 768px) {
    .mb-tiers { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .mb-tiers { grid-template-columns: 1fr; }
    .mb-hero { flex-direction: column; }
    .mb-hero-stats { width: 100%; }
}

.mb-tier {
    background: var(--mb-panel);
    border: 1px solid var(--mb-border);
    border-radius: 12px;
    padding: 20px 14px;
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s;
}

.mb-tier:hover {
    border-color: var(--mb-green-border);
    transform: translateY(-2px);
}

.mb-tier.selected {
    border-color: var(--mb-green);
    box-shadow: 0 0 0 1px var(--mb-green);
    transform: translateY(-2px);
}

.mb-tier-badge {
    position: absolute;
    top: -11px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
}

.mb-badge-green  { background: var(--mb-green); color: #071018; }
.mb-badge-orange { background: var(--mb-orange); color: #071018; }

.mb-tier-price {
    font-size: 22px;
    font-weight: 800;
    color: var(--mb-text);
    margin-bottom: 4px;
}

.mb-tier-cr {
    font-size: 15px;
    font-weight: 700;
    color: var(--mb-green);
    margin-bottom: 4px;
}

.mb-tier-bonus {
    font-size: 11px;
    color: var(--mb-orange);
    font-weight: 600;
}

/* Divider */
.mb-divider {
    border: none;
    border-top: 1px solid var(--mb-border);
    margin: 24px 0;
}

/* Custom amount */
.mb-custom-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--mb-hint);
    margin-bottom: 10px;
}

.mb-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.mb-input {
    background: var(--mb-input);
    border: 1px solid var(--mb-border);
    border-radius: 8px;
    color: var(--mb-text);
    padding: 11px 14px;
    font-size: 15px;
    width: 160px;
    outline: none;
    transition: border-color 0.2s;
}

.mb-input:focus { border-color: var(--mb-green-border); }
.mb-input::placeholder { color: var(--mb-hint); }

.mb-currency { font-size: 15px; color: var(--mb-hint); }

/* Preview box */
.mb-preview {
    background: var(--mb-green-dim);
    border: 1px solid var(--mb-green-border);
    border-radius: 10px;
    padding: 14px 18px;
    display: none;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    animation: mbFadeIn 0.2s ease;
}

.mb-preview.visible { display: flex; }

@keyframes mbFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.mb-preview-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mb-hint);
    margin-bottom: 3px;
}

.mb-preview-val {
    font-size: 16px;
    font-weight: 700;
    color: var(--mb-text);
}

.mb-preview-val.green  { color: var(--mb-green); }
.mb-preview-val.orange { color: var(--mb-orange); }

/* Pay button */
.mb-pay-btn {
    background: var(--mb-green);
    color: #071018;
    border: none;
    border-radius: 10px;
    padding: 13px 36px;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: opacity 0.2s, transform 0.15s;
}

.mb-pay-btn:hover { opacity: 0.88; transform: translateY(-1px); }
.mb-pay-btn:active { transform: scale(0.98); }
.mb-pay-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* History */
.mb-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.mb-filter {
    background: var(--mb-panel);
    border: 1px solid var(--mb-border);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 12px;
    color: var(--mb-muted);
    cursor: pointer;
    transition: all 0.15s;
}

.mb-filter:hover { border-color: var(--mb-green-border); color: var(--mb-green); }
.mb-filter.active {
    border-color: var(--mb-green-border);
    color: var(--mb-green);
    background: var(--mb-green-dim);
}

.mb-tx-list { display: flex; flex-direction: column; gap: 6px; }

.mb-tx {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--mb-panel);
    border: 1px solid var(--mb-border);
    border-radius: 10px;
    padding: 14px 18px;
    transition: border-color 0.15s;
    gap: 12px;
}

.mb-tx:hover { border-color: rgba(255,255,255,0.14); }

.mb-tx-left {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1;
}

.mb-tx-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
}

.mb-tx-icon.credit { background: rgba(34,197,94,0.12); color: var(--mb-green); }
.mb-tx-icon.debit  { background: rgba(230,74,74,0.12);  color: var(--mb-red); }

.mb-tx-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--mb-text);
    margin-bottom: 3px;
}

.mb-tx-date { font-size: 11px; color: var(--mb-hint); }

.mb-tx-right { text-align: right; flex-shrink: 0; }

.mb-tx-amount {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.mb-tx-amount.plus  { color: var(--mb-green); }
.mb-tx-amount.minus { color: var(--mb-red); }

.mb-tx-status {
    font-size: 10px;
    padding: 2px 9px;
    border-radius: 20px;
    display: inline-block;
    font-weight: 600;
}

.mb-status-applied  { background: rgba(34,197,94,0.12); color: var(--mb-green); }
.mb-status-pending  { background: rgba(245,158,11,0.12); color: var(--mb-orange); }
.mb-status-cancelled{ background: rgba(230,74,74,0.12);  color: var(--mb-red); }

/* Empty state */
.mb-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--mb-hint);
}

.mb-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.3;
}

/* Pagination */
.mb-pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 20px;
}

.mb-page-btn {
    background: var(--mb-panel);
    border: 1px solid var(--mb-border);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 12px;
    color: var(--mb-muted);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
}

.mb-page-btn:hover, .mb-page-btn.active {
    border-color: var(--mb-green-border);
    color: var(--mb-green);
}

/* Loading spinner */
.mb-loading {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(13,20,29,0.8);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.mb-loading.visible { display: flex; }

.mb-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(34,197,94,0.2);
    border-top-color: var(--mb-green);
    border-radius: 50%;
    animation: mbSpin 0.7s linear infinite;
}

@keyframes mbSpin {
    to { transform: rotate(360deg); }
}

/* Nav hook */
.mb-nav-credits {
    background: var(--mb-green-dim);
    border: 1px solid var(--mb-green-border);
    border-radius: 20px;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 700;
    color: var(--mb-green);
    white-space: nowrap;
    text-decoration: none;
}

.mb-nav-credits:hover { opacity: 0.85; }