:root {
    --clr-bg: #f4f1ec; --clr-surface: #ffffff; --clr-surface-alt: #faf9f7;
    --clr-border: #e2ded6; --clr-text: #1a1a18; --clr-text-muted: #7a756b;
    --clr-accent: #dbae3a; --clr-accent-soft: #fdf6e8;
    --clr-success: #2a9d5c; --clr-success-soft: #eaf7ef;
    --clr-warning: #d4940a; --clr-warning-soft: #fef9eb;
    --clr-danger: #c93b3b; --clr-danger-soft: #fceaea;
    --font-display: 'IBM Plex Mono', monospace; --font-body: 'DM Sans', sans-serif;
    --radius: 10px;
}
* { box-sizing: border-box; }
body { font-family: var(--font-body); background: var(--clr-bg); color: var(--clr-text); min-height: 100vh; }

.page-header { background: var(--clr-surface); border-bottom: 1px solid var(--clr-border); padding: 1.25rem 0; }
.page-header h1 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; margin: 0; letter-spacing: -0.02em; }
.page-header .mailbox-addr { color: var(--clr-accent); }
.page-header .meta { font-size: 0.78rem; color: var(--clr-text-muted); }
.page-logo { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; background: linear-gradient(135deg, var(--clr-accent) 0%, #e8c55a 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; white-space: nowrap; border-right: 1px solid var(--clr-border); padding-right: 1rem; }
.settings-icon { color: var(--clr-text-muted); transition: color 0.2s, transform 0.3s; display: flex; }
.settings-icon:hover { color: var(--clr-accent); transform: rotate(45deg); }
.header-icon { color: var(--clr-text-muted); transition: color 0.2s; display: flex; }
.header-icon:hover { color: var(--clr-accent); }

.btn-copy { background: none; border: 1px solid var(--clr-border); border-radius: 3px; padding: 0 .3em; font-size: .6rem; cursor: pointer; color: var(--clr-text-muted); vertical-align: middle; transition: all 0.2s; }
.btn-copy:hover { border-color: var(--clr-accent); color: var(--clr-accent); }
.btn-copy.copied { border-color: var(--clr-success); color: var(--clr-success); }

.nav-tabs { border-bottom: 2px solid var(--clr-border); }
.nav-tabs .nav-link { font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--clr-text-muted); border: none; padding: 0.6rem 1.2rem; border-bottom: 2px solid transparent; margin-bottom: -2px; }
.nav-tabs .nav-link:hover { color: var(--clr-text); border-color: var(--clr-border); }
.nav-tabs .nav-link.active { color: var(--clr-accent); border-color: var(--clr-accent); background: transparent; }

.stat-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius); padding: 1.15rem 1.35rem; height: 100%; transition: box-shadow 0.2s; }
.stat-card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.stat-card.kpi-link { cursor: pointer; }
.stat-card.kpi-link:hover { box-shadow: 0 2px 16px rgba(0,0,0,0.1); border-color: var(--clr-accent); }
.stat-card.kpi-link .sub::after { content: ' →'; opacity: 0; transition: opacity 0.2s; }
.stat-card.kpi-link:hover .sub::after { opacity: 0.6; }
.stat-card .label { font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--clr-text-muted); font-family: var(--font-display); }
.stat-card .value { font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; line-height: 1.2; margin-top: 0.3rem; }
.stat-card .sub { font-size: 0.78rem; color: var(--clr-text-muted); margin-top: 0.2rem; }

.chart-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius); padding: 1.35rem; }
.chart-card h3 { font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--clr-text-muted); margin-bottom: 0.9rem; }
.chart-wrap { position: relative; height: 250px; width: 100%; }
.chart-wrap-sm { height: 200px; }

.usage-bar-track { height: 10px; background: var(--clr-surface-alt); border-radius: 5px; overflow: hidden; border: 1px solid var(--clr-border); }
.usage-bar-fill { height: 100%; border-radius: 5px; transition: width 1s cubic-bezier(0.22,1,0.36,1); background: var(--clr-accent); }
.usage-bar-fill.warning { background: var(--clr-warning); }
.usage-bar-fill.danger { background: var(--clr-danger); }

.badge-status { display: inline-block; padding: 0.18em 0.6em; font-size: 0.68rem; font-weight: 600; font-family: var(--font-display); border-radius: 4px; text-transform: uppercase; letter-spacing: 0.04em; }
.badge-enabled { background: var(--clr-success-soft); color: var(--clr-success); }
.badge-disabled { background: var(--clr-danger-soft); color: var(--clr-danger); }
.badge-warning { background: var(--clr-warning-soft); color: var(--clr-warning); }
.badge-muted { background: var(--clr-surface-alt); color: var(--clr-text-muted); }

.table-stats { font-size: 0.82rem; }
.table-stats th { font-family: var(--font-display); font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--clr-text-muted); border-bottom-width: 1px; }
.table-stats td { vertical-align: middle; }

.domain-bar { height: 6px; background: var(--clr-surface-alt); border-radius: 3px; overflow: hidden; min-width: 80px; }
.domain-bar-fill { height: 100%; background: var(--clr-accent); border-radius: 3px; }

.section-gap { margin-top: 1.25rem; }
.filter-input { font-family: var(--font-display); font-size: 0.78rem; }
.filter-btn { font-family: var(--font-display); font-size: 0.72rem; }
.filter-count { font-family: var(--font-display); font-size: 0.72rem; color: var(--clr-text-muted); }
.pagination-wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.pagination-wrap .page-btns { display: flex; gap: 2px; }
.pagination-wrap .page-btns button { background: var(--clr-surface-alt); border: 1px solid var(--clr-border); border-radius: 4px; padding: .2rem .5rem; font-size: .7rem; font-family: var(--font-display); cursor: pointer; color: var(--clr-text); min-width: 28px; }
.pagination-wrap .page-btns button:hover { border-color: var(--clr-accent); color: var(--clr-accent); }
.pagination-wrap .page-btns button.active { background: var(--clr-accent); color: #fff; border-color: var(--clr-accent); }
.pagination-wrap .page-btns button:disabled { opacity: .4; cursor: default; }
.pagination-wrap .page-info { font-size: .7rem; color: var(--clr-text-muted); font-family: var(--font-display); }
.search-spinner { display: inline-flex; align-items: center; gap: .4rem; font-family: var(--font-display); font-size: .72rem; color: var(--clr-text-muted); }
.search-spinner::before { content: ''; width: 14px; height: 14px; border: 2px solid var(--clr-border); border-top-color: var(--clr-accent); border-radius: 50%; animation: searchSpin .6s linear infinite; }
@keyframes searchSpin { to { transform: rotate(360deg); } }
.text-ellipsis { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.rej-arrow { transition: transform 0.2s; font-size: 0.55rem; width: 1rem; text-align: center; color: var(--clr-text-muted); }
.rej-summary.expanded .rej-arrow { transform: rotate(90deg); color: var(--clr-accent); }

.activity-arrow { transition: transform 0.2s; }
.activity-row:hover { background: var(--clr-surface-alt); }
.activity-row.expanded { background: var(--clr-accent-soft); }

@media (max-width: 991px) {
    .stat-card .value { font-size: 1.3rem; }
    .nav-tabs { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .nav-tabs .nav-link { white-space: nowrap; padding: 0.5rem 0.8rem; font-size: .7rem; }
    .d-flex.gap-2.align-items-center { flex-wrap: wrap; }
    .filter-input { max-width: 100% !important; width: 100%; }
    .table-stats { font-size: .78rem; }
    .table-stats th, .table-stats td { padding: .3rem .5rem; white-space: nowrap; }
    .table-stats code { word-break: keep-all; white-space: nowrap; }
    .rej-arrow { min-width: 1.2rem; max-width: 1.2rem; }
    .rej-summary td:nth-child(2) { font-size: .72rem; }
    .rej-detail > td > div,
    .activity-detail > td > div { margin-left: 0 !important; }
    .chart-card { padding: 1rem; }
    .chart-wrap { height: 200px; }
    .page-header h1 { font-size: .9rem; }
    .page-header .meta { font-size: .7rem; }
    .page-logo { font-size: 1.2rem; padding-right: .7rem; }
    .filter-btn { font-size: .65rem; padding: .2rem .5rem; }
}

.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; overflow-y: visible; }
.table-responsive .table-stats { min-width: 600px; }
.rej-table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.rej-table-wrap .table-stats { min-width: 700px; }
.chart-card { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.chart-card > .table-stats,
.chart-card .table-stats { min-width: 500px; }

.back-link { font-family: var(--font-display); font-size: .78rem; color: var(--clr-text-muted); text-decoration: none; transition: color .2s; }
.back-link:hover { color: var(--clr-accent); }

.btn-2mail { background: var(--clr-accent); color: #fff; font-family: var(--font-display); font-size: .75rem; font-weight: 600; border: none; border-radius: .25rem; padding: .4rem 1rem; cursor: pointer; transition: opacity .2s; }
.btn-2mail:hover { opacity: .85; color: #fff; }
.btn-2mail-outline { background: transparent; color: var(--clr-accent); font-family: var(--font-display); font-size: .75rem; font-weight: 600; border: 1px solid var(--clr-accent); border-radius: .25rem; padding: .4rem 1rem; cursor: pointer; transition: all .2s; }
.btn-2mail-outline:hover { background: var(--clr-accent-soft); }

.mailing-btn {
    display: inline-flex; align-items: center; gap: .4rem;
    background: linear-gradient(135deg, var(--clr-accent) 0%, #e8c55a 100%);
    color: #fff; text-decoration: none;
    font-family: var(--font-display); font-size: .72rem; font-weight: 600; letter-spacing: .03em;
    padding: .35rem .85rem; border-radius: .25rem;
    transition: transform .2s, box-shadow .2s;
    box-shadow: 0 2px 8px rgba(219,174,58,0.25);
}
.mailing-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(219,174,58,0.35);
    color: #fff;
}
.mailing-btn svg { flex-shrink: 0; }