/* ════════════════════════════════════════════════════════════════════════════
   billing.css  —  Billing Module (Modules 4 & 18)
   Extends dashboard.css / controls.css — no framework dependencies.
   ════════════════════════════════════════════════════════════════════════════ */

/* ── Tab bar ────────────────────────────────────────────────────────────────── */

.billing-tab-bar {
    display: flex;
    gap: .25rem;
    border-bottom: 1px solid var(--border-color, #2a2f3a);
    margin-bottom: 1.75rem;
    padding-bottom: 0;
}

.billing-tab {
    padding: .55rem 1.1rem;
    font-size: .875rem;
    font-weight: 500;
    color: var(--text-secondary, #8b95a5);
    border: none;
    background: none;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    border-radius: 4px 4px 0 0;
    transition: color .15s, border-color .15s;
    display: flex;
    align-items: center;
    gap: .35rem;
}

.billing-tab:hover { color: var(--text-primary, #e2e8f0); }

.billing-tab.active {
    color: var(--accent, #6366f1);
    border-bottom-color: var(--accent, #6366f1);
}

.billing-tab .material-symbols-outlined {
    font-size: 1.05rem;
    vertical-align: middle;
}

/* ── Stats row ──────────────────────────────────────────────────────────────── */

.billing-stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.billing-stat-card {
    background: var(--surface, #1a1f2b);
    border: 1px solid var(--border-color, #2a2f3a);
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.billing-stat-icon {
    width: 42px;
    height: 42px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    flex-shrink: 0;
}

.billing-stat-icon.accent   { background: rgba(99,102,241,.15); color: #6366f1; }
.billing-stat-icon.green    { background: rgba(34,197,94,.13);  color: #22c55e; }
.billing-stat-icon.amber    { background: rgba(245,158,11,.13); color: #f59e0b; }
.billing-stat-icon.red      { background: rgba(239,68,68,.13);  color: #ef4444; }

.billing-stat-body { flex: 1; min-width: 0; }
.billing-stat-label { font-size: .75rem; color: var(--text-muted, #64748b); text-transform: uppercase; letter-spacing: .04em; }
.billing-stat-value { font-size: 1.45rem; font-weight: 700; color: var(--text-primary, #e2e8f0); line-height: 1.2; }
.billing-stat-sub   { font-size: .78rem; color: var(--text-secondary, #8b95a5); margin-top: .1rem; }

/* ── Plan grid ──────────────────────────────────────────────────────────────── */

.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.15rem;
    margin-bottom: 2rem;
}

.plan-card {
    background: var(--surface, #1a1f2b);
    border: 1px solid var(--border-color, #2a2f3a);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: .75rem;
    position: relative;
    transition: border-color .2s, box-shadow .2s;
}

.plan-card:hover {
    border-color: var(--accent-dim, #4f4fa8);
    box-shadow: 0 4px 18px rgba(99,102,241,.1);
}

.plan-card.current {
    border-color: var(--accent, #6366f1);
    box-shadow: 0 0 0 1px var(--accent, #6366f1);
}

.plan-card.popular {
    border-color: #22c55e;
}

.plan-badge {
    position: absolute;
    top: -10px;
    right: 16px;
    background: #22c55e;
    color: #fff;
    font-size: .68rem;
    font-weight: 700;
    padding: .2rem .6rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.plan-badge.current-badge {
    background: var(--accent, #6366f1);
}

.plan-name {
    font-size: .82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--text-secondary, #8b95a5);
}

.plan-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary, #e2e8f0);
    line-height: 1;
}

.plan-price span {
    font-size: .95rem;
    font-weight: 400;
    color: var(--text-secondary, #8b95a5);
}

.plan-price-note {
    font-size: .78rem;
    color: var(--text-muted, #64748b);
    margin-top: -.4rem;
}

.plan-credits {
    font-size: .83rem;
    color: #f59e0b;
    font-weight: 600;
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: .4rem;
    flex: 1;
}

.plan-features li {
    font-size: .8rem;
    color: var(--text-secondary, #8b95a5);
    display: flex;
    align-items: center;
    gap: .4rem;
}

.plan-features li .material-symbols-outlined {
    font-size: .95rem;
    color: #22c55e;
}

.plan-divider {
    border: none;
    border-top: 1px solid var(--border-color, #2a2f3a);
    margin: .25rem 0;
}

.plan-cta {
    width: 100%;
    padding: .6rem;
    border-radius: 8px;
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--border-color, #2a2f3a);
    background: transparent;
    color: var(--text-primary, #e2e8f0);
    transition: background .15s, border-color .15s;
}

.plan-cta:hover:not(:disabled) {
    background: rgba(99,102,241,.12);
    border-color: var(--accent, #6366f1);
}

.plan-cta.primary-cta {
    background: var(--accent, #6366f1);
    color: #fff;
    border-color: var(--accent, #6366f1);
}

.plan-cta.primary-cta:hover:not(:disabled) {
    background: var(--accent-hover, #4f4fa8);
}

.plan-cta:disabled { opacity: .5; cursor: default; }

/* Cancel sub notice */
.cancel-notice {
    background: rgba(239,68,68,.08);
    border: 1px solid rgba(239,68,68,.25);
    border-radius: 8px;
    padding: .75rem 1rem;
    font-size: .83rem;
    color: #ef4444;
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1.25rem;
}

/* Plan interval toggle */
.interval-toggle {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1.5rem;
}

.interval-toggle label { font-size: .85rem; color: var(--text-secondary, #8b95a5); }

.interval-btn {
    padding: .35rem .9rem;
    border-radius: 20px;
    border: 1px solid var(--border-color, #2a2f3a);
    font-size: .82rem;
    font-weight: 500;
    cursor: pointer;
    background: transparent;
    color: var(--text-secondary, #8b95a5);
    transition: all .15s;
}

.interval-btn.active {
    background: var(--accent, #6366f1);
    border-color: var(--accent, #6366f1);
    color: #fff;
}

.interval-btn .save-badge {
    background: #22c55e;
    color: #fff;
    font-size: .65rem;
    padding: .1rem .35rem;
    border-radius: 10px;
    margin-left: .3rem;
    font-weight: 700;
    vertical-align: middle;
}

/* ── Credit packs ───────────────────────────────────────────────────────────── */

.credit-pack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.credit-pack {
    background: var(--surface, #1a1f2b);
    border: 1px solid var(--border-color, #2a2f3a);
    border-radius: 10px;
    padding: 1.25rem;
    text-align: center;
    cursor: pointer;
    transition: border-color .15s, box-shadow .15s;
    position: relative;
}

.credit-pack:hover {
    border-color: #f59e0b;
    box-shadow: 0 4px 16px rgba(245,158,11,.1);
}

.credit-pack .best-value {
    position: absolute;
    top: -9px;
    left: 50%;
    transform: translateX(-50%);
    background: #f59e0b;
    color: #000;
    font-size: .65rem;
    font-weight: 700;
    padding: .15rem .5rem;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: .05em;
    white-space: nowrap;
}

.credit-pack-amount {
    font-size: 1.6rem;
    font-weight: 700;
    color: #f59e0b;
    line-height: 1;
    margin-bottom: .25rem;
}

.credit-pack-label {
    font-size: .78rem;
    color: var(--text-secondary, #8b95a5);
    margin-bottom: .6rem;
}

.credit-pack-price {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary, #e2e8f0);
}

/* Credit transactions table */
.credit-tx-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .85rem;
}

.credit-tx-table th {
    text-align: left;
    padding: .6rem .75rem;
    color: var(--text-muted, #64748b);
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    border-bottom: 1px solid var(--border-color, #2a2f3a);
}

.credit-tx-table td {
    padding: .7rem .75rem;
    color: var(--text-primary, #e2e8f0);
    border-bottom: 1px solid rgba(42,47,58,.5);
    vertical-align: middle;
}

.credit-tx-table tr:last-child td { border-bottom: none; }

.tx-amount-positive { color: #22c55e; font-weight: 600; }
.tx-amount-negative { color: #ef4444; font-weight: 600; }

.tx-type-badge {
    display: inline-block;
    padding: .15rem .55rem;
    border-radius: 12px;
    font-size: .72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.tx-type-badge.purchased  { background: rgba(34,197,94,.15);   color: #22c55e; }
.tx-type-badge.consumed   { background: rgba(239,68,68,.12);   color: #ef4444; }
.tx-type-badge.refunded   { background: rgba(99,102,241,.15);  color: #6366f1; }
.tx-type-badge.bonus      { background: rgba(245,158,11,.15);  color: #f59e0b; }
.tx-type-badge.renewal    { background: rgba(14,165,233,.15);  color: #0ea5e9; }
.tx-type-badge.adjusted   { background: rgba(139,92,246,.15);  color: #8b5cf6; }
.tx-type-badge.expired    { background: rgba(100,116,139,.15); color: #64748b; }

/* ── Payment methods ────────────────────────────────────────────────────────── */

.payment-cards-list {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    margin-bottom: 1.5rem;
}

.payment-card {
    background: var(--surface, #1a1f2b);
    border: 1px solid var(--border-color, #2a2f3a);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.payment-card.is-default {
    border-color: var(--accent, #6366f1);
}

.payment-card-icon {
    width: 44px;
    height: 30px;
    border-radius: 5px;
    background: var(--surface-2, #212736);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.payment-card-body { flex: 1; min-width: 0; }

.payment-card-title {
    font-size: .88rem;
    font-weight: 600;
    color: var(--text-primary, #e2e8f0);
}

.payment-card-sub {
    font-size: .78rem;
    color: var(--text-secondary, #8b95a5);
}

.payment-card-actions {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.pm-badge {
    font-size: .7rem;
    padding: .15rem .55rem;
    border-radius: 10px;
    font-weight: 600;
    background: rgba(99,102,241,.15);
    color: var(--accent, #6366f1);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.pm-action-btn {
    padding: .3rem .65rem;
    font-size: .78rem;
    border-radius: 6px;
    border: 1px solid var(--border-color, #2a2f3a);
    background: transparent;
    color: var(--text-secondary, #8b95a5);
    cursor: pointer;
    transition: all .15s;
}

.pm-action-btn:hover:not(:disabled) {
    border-color: var(--accent, #6366f1);
    color: var(--text-primary, #e2e8f0);
}

.pm-action-btn.danger:hover:not(:disabled) {
    border-color: #ef4444;
    color: #ef4444;
}

/* Add card form */
.add-card-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .85rem;
}

.add-card-form .full-row { grid-column: 1 / -1; }

/* ── Invoices table ─────────────────────────────────────────────────────────── */

.invoice-table-wrap {
    background: var(--surface, #1a1f2b);
    border: 1px solid var(--border-color, #2a2f3a);
    border-radius: 10px;
    overflow: hidden;
}

.invoice-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .85rem;
}

.invoice-table th {
    text-align: left;
    padding: .7rem 1rem;
    color: var(--text-muted, #64748b);
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    background: var(--surface-2, #212736);
    border-bottom: 1px solid var(--border-color, #2a2f3a);
}

.invoice-table td {
    padding: .8rem 1rem;
    color: var(--text-primary, #e2e8f0);
    border-bottom: 1px solid rgba(42,47,58,.5);
    vertical-align: middle;
}

.invoice-table tr:last-child td { border-bottom: none; }

.invoice-table tr:hover td { background: rgba(255,255,255,.02); }

.invoice-status {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .2rem .6rem;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.invoice-status.paid         { background: rgba(34,197,94,.13);  color: #22c55e; }
.invoice-status.open         { background: rgba(245,158,11,.13); color: #f59e0b; }
.invoice-status.void         { background: rgba(100,116,139,.13);color: #64748b; }
.invoice-status.draft        { background: rgba(99,102,241,.12); color: #6366f1; }
.invoice-status.uncollectible{ background: rgba(239,68,68,.12);  color: #ef4444; }

/* ── Billing section header ─────────────────────────────────────────────────── */

.billing-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary, #e2e8f0);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.billing-section-title .material-symbols-outlined {
    font-size: 1.1rem;
    color: var(--accent, #6366f1);
}

/* ── Pagination ─────────────────────────────────────────────────────────────── */

.billing-pagination {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: .35rem;
    padding: .85rem 1rem;
    border-top: 1px solid var(--border-color, #2a2f3a);
}

.billing-page-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border-color, #2a2f3a);
    background: transparent;
    color: var(--text-secondary, #8b95a5);
    font-size: .82rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .15s;
}

.billing-page-btn:hover:not(:disabled) {
    border-color: var(--accent, #6366f1);
    color: var(--text-primary, #e2e8f0);
}

.billing-page-btn.active {
    background: var(--accent, #6366f1);
    border-color: var(--accent, #6366f1);
    color: #fff;
}

.billing-page-btn:disabled { opacity: .4; cursor: default; }

/* ── Error / empty states ───────────────────────────────────────────────────── */

.billing-error {
    background: rgba(239,68,68,.08);
    border: 1px solid rgba(239,68,68,.25);
    border-radius: 8px;
    padding: .8rem 1rem;
    color: #ef4444;
    font-size: .85rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1.25rem;
}

.billing-empty {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--text-muted, #64748b);
    font-size: .87rem;
}

.billing-empty .material-symbols-outlined {
    font-size: 2.5rem;
    display: block;
    margin-bottom: .5rem;
    color: var(--border-color, #2a2f3a);
}

/* ── Confirm purchase modal body ────────────────────────────────────────────── */

.purchase-confirm-body {
    display: flex;
    flex-direction: column;
    gap: .6rem;
}

.purchase-confirm-row {
    display: flex;
    justify-content: space-between;
    font-size: .88rem;
    color: var(--text-secondary, #8b95a5);
    border-bottom: 1px solid var(--border-color, #2a2f3a);
    padding-bottom: .5rem;
}

.purchase-confirm-row:last-child { border-bottom: none; }

.purchase-confirm-row .val {
    font-weight: 600;
    color: var(--text-primary, #e2e8f0);
}

/* ── Responsive ─────────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
    .plan-grid  { grid-template-columns: 1fr; }
    .credit-pack-grid { grid-template-columns: 1fr 1fr; }
    .add-card-form { grid-template-columns: 1fr; }
    .billing-stats-row { grid-template-columns: 1fr 1fr; }
}