:root {
    color-scheme: light;
    --ink: #1d1d1f;
    --muted: #6e6e73;
    --canvas: #f5f5f7;
    --card: rgba(255, 255, 255, 0.92);
    --line: rgba(60, 60, 67, 0.12);
    --blue: #0071e3;
    --green: #248a3d;
    --red: #d70015;
    --orange: #b25000;
    --radius: 22px;
    --shadow: 0 18px 60px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html { background: var(--canvas); }
body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 15% -10%, rgba(0, 113, 227, 0.10), transparent 30rem),
        var(--canvas);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}
button, input, textarea, select { font: inherit; }

.topbar {
    min-height: 76px;
    padding: 16px max(24px, calc((100vw - 1440px) / 2));
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    background: rgba(245, 245, 247, 0.82);
    backdrop-filter: blur(24px);
    position: sticky;
    top: 0;
    z-index: 20;
}
.topbar p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.pulse-mark { display: flex; align-items: center; gap: 9px; font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.pulse-mark span { width: 11px; height: 11px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 6px rgba(0,113,227,.11); }

.shell { width: min(1440px, calc(100% - 48px)); margin: 38px auto 80px; }
.hero { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 22px; }
.hero h1 { font-size: clamp(46px, 7vw, 84px); line-height: .92; letter-spacing: -.06em; margin: 8px 0 0; }
.hero h1 small { font-size: .32em; color: var(--muted); letter-spacing: -.03em; }
.eyebrow { margin: 0; color: var(--muted); font-size: 12px; font-weight: 750; text-transform: uppercase; letter-spacing: .12em; }
.run-state { display: inline-flex; align-items: center; gap: 9px; padding: 10px 14px; border-radius: 999px; background: #ececee; color: var(--muted); font-size: 13px; font-weight: 700; }
.run-state span { width: 8px; height: 8px; border-radius: 50%; background: #999; }
.run-state.is-on { color: var(--green); background: #eef9f0; }
.run-state.is-on span { background: var(--green); }

.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.stats-grid a, .panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); box-shadow: var(--shadow); }
.stats-grid a { padding: 20px; min-height: 118px; display: flex; flex-direction: column; justify-content: space-between; color: inherit; text-decoration: none; transition: transform .15s, border-color .15s; }
.stats-grid a:hover { transform: translateY(-2px); border-color: rgba(0,113,227,.32); }
.stats-grid span { color: var(--muted); font-size: 13px; }
.stats-grid strong { font-size: 34px; letter-spacing: -.04em; }
.stats-grid small { color: var(--blue); font-size: 11px; font-weight: 700; }

.analytics-panel { margin-bottom: 18px; }
.analytics-panel summary { display: flex; align-items: center; justify-content: space-between; cursor: pointer; list-style: none; }
.analytics-panel summary::-webkit-details-marker { display: none; }
.analytics-panel summary h2 { margin: 5px 0 0; font-size: 25px; letter-spacing: -.035em; }
.analytics-panel summary > span { color: var(--blue); font-size: 13px; font-weight: 750; }
.analytics-panel[open] summary > span { font-size: 0; }
.analytics-panel[open] summary > span::after { content: "Свернуть"; font-size: 13px; }
.analytics-content { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); display: grid; gap: 20px; }
.funnel-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.funnel-grid > div { padding: 16px; border-radius: 16px; background: var(--canvas); display: grid; gap: 6px; }
.funnel-grid span, .funnel-grid small { color: var(--muted); font-size: 12px; }
.funnel-grid strong { font-size: 30px; letter-spacing: -.04em; }
.period-table { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.period-row { display: grid; grid-template-columns: 1.3fr repeat(3, 1fr); gap: 12px; padding: 12px 14px; border-top: 1px solid var(--line); font-size: 13px; }
.period-row:first-child { border-top: 0; }
.period-head { color: var(--muted); background: var(--canvas); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
.sender-analytics h3 { margin: 0 0 12px; font-size: 17px; }
.sender-stat-row { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 12px; padding: 12px 14px; border-top: 1px solid var(--line); font-size: 13px; }
.sender-stat-row:first-child { border-top: 0; }
.sender-stat-head { color: var(--muted); background: var(--canvas); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }

.sender-panel { margin-bottom: 18px; }
.sender-current { display: grid; grid-template-columns: minmax(240px, .7fr) minmax(420px, 1.3fr); gap: 24px; align-items: end; }
.sender-current h2 { margin: 5px 0 4px; font-size: 28px; letter-spacing: -.04em; }
.sender-current p { margin: 0; color: var(--muted); font-size: 13px; }
.sender-select-form { display: grid; grid-template-columns: minmax(260px, 1fr) auto; gap: 10px; align-items: end; }
.sender-warning { margin-top: 18px; padding: 12px 14px; border-radius: 13px; color: var(--orange); background: #fff5e8; font-size: 12px; line-height: 1.5; }
.sender-settings { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 15px; }
.sender-settings summary { color: var(--blue); cursor: pointer; font-size: 13px; font-weight: 750; }
.sender-settings-content { display: grid; gap: 15px; margin-top: 16px; }
.sender-list { display: flex; flex-wrap: wrap; gap: 8px; }
.sender-chip { display: grid; gap: 3px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 13px; background: var(--canvas); }
.sender-chip strong { font-size: 13px; }
.sender-chip span { color: var(--muted); font-size: 11px; }
.sender-chip.is-selected { border-color: rgba(0,113,227,.45); background: #eaf3ff; }
.sender-add-form { display: grid; grid-template-columns: repeat(3, minmax(150px, 1fr)) auto; gap: 10px; align-items: end; }
.muted-value { color: var(--muted); font-size: 12px; }

.workspace-grid { display: grid; grid-template-columns: minmax(320px, .72fr) minmax(440px, 1.28fr); gap: 18px; margin-bottom: 18px; }
.panel { padding: 24px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.panel-heading h2 { margin: 5px 0 0; font-size: 25px; letter-spacing: -.035em; }
.panel-note, .hint { color: var(--muted); font-size: 13px; line-height: 1.5; }
.counter { min-width: 34px; height: 34px; padding: 0 10px; display: inline-grid; place-items: center; border-radius: 999px; color: var(--blue); background: #eaf3ff; font-weight: 700; }

.stack { display: grid; gap: 15px; }
label { display: grid; gap: 7px; }
label > span { color: var(--muted); font-size: 12px; font-weight: 700; }
input, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fff;
    color: var(--ink);
    padding: 12px 13px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fff;
    color: var(--ink);
    padding: 12px 38px 12px 13px;
    outline: none;
}
textarea { resize: vertical; line-height: 1.45; }
input:focus, textarea:focus { border-color: rgba(0,113,227,.65); box-shadow: 0 0 0 4px rgba(0,113,227,.10); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.button { border: 0; border-radius: 999px; padding: 11px 17px; cursor: pointer; font-weight: 700; }
.button-primary { color: #fff; background: var(--blue); }
.button-dark { color: #fff; background: var(--ink); }
.button-ghost { color: var(--ink); background: rgba(60,60,67,.08); }
.text-button { border: 0; padding: 0; background: none; color: var(--blue); cursor: pointer; font-size: 12px; font-weight: 700; white-space: nowrap; }
.text-button.danger { color: var(--red); }
.text-button.success { color: var(--green); }
a.text-button { text-decoration: none; }
.toggle { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle > span { width: 44px; height: 26px; border-radius: 999px; background: #d1d1d6; position: relative; transition: .2s; }
.toggle > span::after { content: ""; width: 22px; height: 22px; border-radius: 50%; background: #fff; position: absolute; left: 2px; top: 2px; box-shadow: 0 1px 4px rgba(0,0,0,.18); transition: .2s; }
.toggle input:checked + span { background: var(--green); }
.toggle input:checked + span::after { transform: translateX(18px); }
.toggle b { font-size: 13px; }

.alert { margin-bottom: 16px; padding: 13px 16px; border-radius: 14px; font-size: 14px; }
.alert-success { color: var(--green); background: #eef9f0; }
.alert-error { color: var(--red); background: #fff0f0; }
.alert-warning { color: var(--orange); background: #fff5e8; }

.contacts-panel { padding: 0; overflow: hidden; }
.contacts-heading { padding: 24px 24px 0; display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.contacts-heading .panel-heading { padding: 0; }
.filter-tabs { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; border-radius: 18px; background: var(--canvas); margin-bottom: 18px; }
.filter-tabs a { padding: 8px 12px; border-radius: 999px; color: var(--muted); text-decoration: none; font-size: 12px; font-weight: 700; }
.filter-tabs a.is-active { color: var(--ink); background: #fff; box-shadow: 0 1px 5px rgba(0,0,0,.08); }
.copy-explanation { margin: 0; padding: 0 24px 18px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 18px; text-align: left; border-top: 1px solid var(--line); font-size: 13px; vertical-align: top; }
th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; background: rgba(245,245,247,.65); }
td strong, td small { display: block; }
td small { margin-top: 4px; color: var(--muted); }
.error-text { max-width: 270px; color: var(--red); }
.actions { display: grid; justify-items: end; gap: 8px; }
.primary-action { padding: 7px 10px; border-radius: 999px; color: #fff !important; background: var(--blue); }
.telegram-user { color: var(--blue); font-weight: 750; text-decoration: none; }
.telegram-user:hover { text-decoration: underline; }
.status { display: inline-flex; padding: 6px 9px; border-radius: 999px; background: #ececee; color: var(--muted); font-size: 11px; font-weight: 750; white-space: nowrap; }
.status-sent, .status-opened { color: var(--green); background: #eef9f0; }
.status-new, .status-resolving, .status-resolved { color: var(--blue); background: #eaf3ff; }
.status-failed, .status-not_found { color: var(--red); background: #fff0f0; }
.empty { padding: 50px; text-align: center; color: var(--muted); }
.toast { position: fixed; left: 50%; bottom: 28px; z-index: 50; max-width: calc(100vw - 32px); padding: 12px 17px; border-radius: 999px; color: #fff; background: rgba(29,29,31,.94); box-shadow: var(--shadow); font-size: 13px; font-weight: 700; opacity: 0; transform: translate(-50%, 18px); pointer-events: none; transition: .2s; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(430px, 100%); padding: 36px; border: 1px solid var(--line); border-radius: 28px; background: rgba(255,255,255,.94); box-shadow: var(--shadow); }
.login-card h1 { margin: 28px 0 8px; font-size: 34px; letter-spacing: -.045em; }
.login-card > p { margin: 0 0 24px; color: var(--muted); line-height: 1.5; }

@media (max-width: 980px) {
    .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .workspace-grid { grid-template-columns: 1fr; }
    .funnel-grid { grid-template-columns: 1fr; }
    .sender-current { grid-template-columns: 1fr; }
    .sender-add-form { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
    .shell { width: min(100% - 24px, 1440px); margin-top: 24px; }
    .topbar { padding: 14px 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 9px; }
    .stats-grid article { min-height: 100px; padding: 15px; }
    .stats-grid strong { font-size: 27px; }
    .panel { padding: 18px; }
    .hero { align-items: flex-start; gap: 18px; flex-direction: column; }
    .form-grid { grid-template-columns: 1fr; }
    .login-card { padding: 25px; }
    .contacts-heading { align-items: stretch; flex-direction: column; }
    .contacts-heading .panel-heading { margin-bottom: 0; }
    .filter-tabs { align-self: flex-start; margin-bottom: 16px; }
    .period-row { grid-template-columns: 1.2fr repeat(3, .8fr); gap: 7px; font-size: 12px; }
    .sender-select-form, .sender-add-form { grid-template-columns: 1fr; }
    .sender-stat-row { grid-template-columns: 1.3fr repeat(4, .7fr); gap: 7px; font-size: 12px; }
}