:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --border: #e2e8f0;
  --text: #172033;
  --muted: #667085;
  --primary: #315efb;
  --primary-soft: #edf1ff;
  --success: #0f9d72;
  --danger: #d92d20;
  --whatsapp: #16a36b;
  --sidebar: #111827;
  --sidebar-text: #d7dce8;
  --shadow: 0 14px 35px rgba(15, 23, 42, .07);
  --radius: 16px;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body { margin: 0; color: var(--text); background: var(--bg); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 14px; line-height: 1.45; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 256px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: 23px 14px 18px; color: var(--sidebar-text); background: var(--sidebar); }
.brand { display: inline-flex; align-items: center; gap: 10px; margin: 0 9px 26px; color: #fff; font-size: 18px; font-weight: 800; letter-spacing: -.04em; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark { display: inline-grid; place-items: center; width: 25px; height: 25px; color: #111827; background: #fff; border-radius: 8px; font-size: 15px; }
.workspace-card { padding: 12px; margin: 0 4px 18px; border: 1px solid rgba(255,255,255,.11); background: rgba(255,255,255,.06); border-radius: 12px; }
.workspace-card strong { display: block; margin-top: 3px; color: #fff; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.eyebrow { display: block; color: #7b8aa8; font-size: 10px; font-weight: 800; letter-spacing: .12em; line-height: 1.2; }
.nav-list { display: grid; gap: 4px; }
.nav-item { display: flex; align-items: center; gap: 11px; padding: 10px 11px; color: var(--sidebar-text); border-radius: 10px; font-weight: 650; text-decoration: none; }
.nav-item span { width: 16px; color: #9ca9c2; text-align: center; }
.nav-item:hover { color: #fff; background: rgba(255,255,255,.06); text-decoration: none; }
.nav-item.active { color: #fff; background: rgba(255,255,255,.13); }
.nav-item.active span { color: #aebfff; }
.sidebar-bottom { display: grid; gap: 12px; margin-top: auto; padding: 13px 9px 0; border-top: 1px solid rgba(255,255,255,.1); }
.profile-mini { display: flex; gap: 9px; align-items: center; min-width: 0; }
.profile-mini strong, .profile-mini span { display: block; max-width: 170px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.profile-mini strong { color: #fff; font-size: 12px; }
.profile-mini span { color: #9faac0; font-size: 11px; }
.link-button { padding: 0; color: #b4bfd3; background: transparent; border: 0; text-align: left; }
.link-button:hover { color: #fff; }

.main-content { min-width: 0; padding: 32px 38px 42px; }
.page-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.page-header h1 { margin: 4px 0 5px; font-size: 30px; line-height: 1; letter-spacing: -.045em; }
.page-header p { max-width: 680px; margin: 0; color: var(--muted); }
.header-actions { display: flex; gap: 9px; flex-wrap: wrap; align-items: center; }

.flash { max-width: 1150px; margin: 0 auto 18px; padding: 12px 14px; border: 1px solid; border-radius: 11px; }
.flash.success { color: #056849; background: #ecfdf5; border-color: #b6f0d8; }
.flash.error { color: #94251f; background: #fff6f5; border-color: #fecdc9; }
.flash ul { margin: 6px 0 0 18px; padding: 0; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 39px; gap: 7px; padding: 8px 13px; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 9px; font-size: 13px; font-weight: 750; text-decoration: none; transition: .15s ease; }
.button:hover { transform: translateY(-1px); color: var(--text); box-shadow: 0 4px 9px rgba(15,23,42,.08); text-decoration: none; }
.button.primary { color: #fff; background: var(--primary); border-color: var(--primary); }
.button.secondary { background: var(--surface); }
.button.whatsapp-button { color: #fff; background: var(--whatsapp); border-color: var(--whatsapp); }
.button.danger { color: var(--danger); border-color: #fecdc9; background: #fff8f7; }
.button.ghost { background: transparent; }
.button.full { width: 100%; }
.button.tiny { min-height: 31px; padding: 5px 8px; font-size: 11px; border-radius: 7px; }

.inbox-layout { display: grid; grid-template-columns: minmax(300px, 372px) minmax(470px, 1fr); min-height: calc(100vh - 160px); overflow: hidden; background: var(--surface); border: 1px solid var(--border); border-radius: 17px; box-shadow: var(--shadow); }
.conversation-list-panel { display: flex; flex-direction: column; min-width: 0; border-right: 1px solid var(--border); background: #fbfcff; }
.inbox-filters { display: flex; gap: 4px; padding: 14px; border-bottom: 1px solid var(--border); }
.filter { padding: 7px 9px; color: var(--muted); border-radius: 8px; font-size: 12px; font-weight: 700; text-decoration: none; }
.filter.active { color: var(--primary); background: var(--primary-soft); }
.filter:hover { text-decoration: none; }
.conversation-list { flex: 1; min-height: 0; overflow-y: auto; }
.conversation-row { display: flex; gap: 10px; padding: 13px 14px; color: var(--text); border-bottom: 1px solid #eef1f5; text-decoration: none; }
.conversation-row:hover, .conversation-row.selected { background: #f0f4ff; text-decoration: none; }
.conversation-row.selected { box-shadow: inset 3px 0 0 var(--primary); }
.conversation-row-main { min-width: 0; flex: 1; }
.conversation-row-top { display: flex; align-items: center; justify-content: space-between; gap: 9px; }
.conversation-row-top strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.conversation-row time { flex: 0 0 auto; color: #8b95a7; font-size: 10px; }
.conversation-row-meta { display: flex; align-items: center; gap: 6px; margin-top: 3px; }
.conversation-row p { display: -webkit-box; overflow: hidden; margin: 4px 0 0; color: var(--muted); font-size: 12px; line-height: 1.28; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.channel-badge { display: inline-flex; align-items: center; width: fit-content; padding: 2px 6px; border-radius: 999px; font-size: 10px; font-weight: 800; }
.channel-badge.whatsapp { color: #057349; background: #e5f8ef; }
.channel-badge.email { color: #2855d8; background: #e9efff; }
.unread-dot { display: inline-grid; place-items: center; min-width: 17px; height: 17px; padding: 0 5px; color: #fff; background: var(--primary); border-radius: 99px; font-size: 9px; font-weight: 800; }
.empty-list { display: grid; gap: 5px; padding: 40px 25px; color: var(--muted); text-align: center; }
.empty-list strong { color: var(--text); }
.pagination-wrap { padding: 11px 14px; border-top: 1px solid var(--border); }
.pagination { display: flex; gap: 3px; align-items: center; justify-content: center; padding: 0; margin: 0; list-style: none; }
.page-item .page-link { display: grid; min-width: 28px; min-height: 28px; place-items: center; padding: 4px; color: var(--muted); border-radius: 6px; text-decoration: none; }
.page-item.active .page-link { color: #fff; background: var(--primary); }
.page-item.disabled .page-link { color: #c7ced9; }

.conversation-panel { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: #fff; }
.conversation-header { padding: 16px 20px; border-bottom: 1px solid var(--border); }
.contact-heading { display: flex; align-items: center; gap: 11px; }
.contact-title-line { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.contact-heading h2 { margin: 0; font-size: 16px; letter-spacing: -.02em; }
.contact-heading p { margin: 2px 0 0; color: var(--muted); font-size: 12px; }
.contact-heading small { color: #8a94a6; font-size: 11px; }
.avatar { display: inline-grid; flex: 0 0 auto; place-items: center; width: 29px; height: 29px; color: #31415e; background: #dbe5ff; border-radius: 50%; font-size: 11px; font-weight: 850; }
.avatar.soft { color: #5d6575; background: #edf0f4; }
.avatar.large { width: 39px; height: 39px; font-size: 14px; }
.message-timeline { display: flex; flex: 1; flex-direction: column; gap: 10px; min-height: 280px; padding: 22px; overflow-y: auto; background: linear-gradient(180deg, #fff, #fbfcff); }
.message-bubble { width: fit-content; max-width: min(78%, 690px); padding: 9px 11px; border: 1px solid #e7ebf2; border-radius: 13px; background: #fff; box-shadow: 0 2px 5px rgba(15,23,42,.025); }
.message-bubble.outbound { align-self: flex-end; color: #17347d; background: #eaf0ff; border-color: #d7e2ff; }
.message-label { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 5px; color: #6a758a; font-size: 10px; font-weight: 800; }
.message-body { white-space: pre-wrap; word-break: break-word; font-size: 13px; }
.message-status { display: block; margin-top: 5px; color: #64748b; text-align: right; font-size: 10px; }
.empty-thread { display: grid; place-items: center; align-content: center; gap: 6px; min-height: 100%; padding: 35px; color: var(--muted); text-align: center; }
.empty-thread h2, .empty-thread h3 { margin: 3px 0; color: var(--text); }
.empty-thread p { max-width: 380px; margin: 0; }
.empty-icon { display: grid; width: 45px; height: 45px; margin-bottom: 7px; place-items: center; color: var(--primary); background: var(--primary-soft); border-radius: 14px; font-size: 22px; }
.large-empty { min-height: 500px; }
.composer { padding: 14px; border-top: 1px solid var(--border); background: var(--surface); }
.composer textarea, .subject-input { width: 100%; padding: 10px; color: var(--text); background: #fbfcfe; border: 1px solid #dbe2ee; border-radius: 10px; outline: none; resize: vertical; }
.subject-input { margin-bottom: 8px; }
.composer textarea:focus, .subject-input:focus, input:focus { border-color: #92aaff; box-shadow: 0 0 0 3px #edf1ff; }
.composer-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 8px; color: var(--muted); font-size: 11px; }

.contacts-layout { display: grid; grid-template-columns: minmax(280px, 340px) minmax(500px, 1fr); gap: 20px; align-items: start; }
.contact-form-card, .contacts-table-card, .settings-card { padding: 22px; }
.card h2 { margin: 0 0 16px; font-size: 17px; letter-spacing: -.02em; }
.stack-form { display: grid; gap: 13px; }
.stack-form.compact { gap: 11px; }
.stack-form label { display: grid; gap: 5px; }
.stack-form label > span { color: #465268; font-size: 12px; font-weight: 750; }
.stack-form input, .stack-form textarea, .search-form input { width: 100%; padding: 9px 10px; color: var(--text); background: #fff; border: 1px solid #dbe2ee; border-radius: 9px; outline: none; }
.stack-form textarea { resize: vertical; }
.stack-form small, .integration-footnote { color: var(--muted); font-size: 11px; }
.check-row { display: flex !important; grid-template-columns: auto 1fr; align-items: center; gap: 8px !important; }
.check-row input { width: auto; }
.search-form { display: flex; gap: 9px; margin-bottom: 17px; }
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; min-width: 730px; border-collapse: collapse; }
.data-table th { padding: 0 11px 10px; color: #7a8497; border-bottom: 1px solid var(--border); text-align: left; font-size: 10px; letter-spacing: .06em; text-transform: uppercase; }
.data-table td { padding: 13px 11px; border-bottom: 1px solid #edf0f5; color: #4d5a6f; font-size: 12px; vertical-align: middle; }
.data-table td strong { display: block; color: var(--text); font-size: 13px; }
.data-table td small { display: block; max-width: 180px; margin-top: 2px; overflow: hidden; color: #8490a4; text-overflow: ellipsis; white-space: nowrap; }
.table-actions { display: flex; gap: 5px; justify-content: flex-end; }
.table-empty { padding: 40px !important; color: var(--muted) !important; text-align: center; }

.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(320px, 1fr)); gap: 20px; align-items: start; }
.settings-card { min-width: 0; }
.settings-card:nth-child(3) { grid-column: span 2; }
.integration-title { display: grid; grid-template-columns: auto 1fr auto; align-items: start; gap: 11px; margin-bottom: 17px; }
.integration-title h2 { margin: 0 0 2px; }
.integration-title p { margin: 0; color: var(--muted); font-size: 12px; }
.integration-icon { display: grid; width: 34px; height: 34px; place-items: center; color: #fff; border-radius: 10px; font-size: 16px; font-weight: 900; }
.integration-icon.gmail { background: #e74b3c; }
.integration-icon.whatsapp { background: var(--whatsapp); }
.integration-icon.zadarma { background: #6d51d9; }
.status-dot { display: inline-flex; align-items: center; gap: 4px; padding: 4px 7px; color: #68748a; background: #eff2f6; border-radius: 999px; font-size: 10px; font-weight: 800; white-space: nowrap; }
.status-dot.ok { color: #0c714e; background: #e4f9ef; }
.notice { display: grid; gap: 5px; margin-bottom: 15px; padding: 10px; color: #58657a; background: #f7f9fe; border: 1px solid #e4eaf8; border-radius: 10px; font-size: 11px; }
.notice strong { color: #33415a; }
.notice code { display: block; padding: 5px; overflow: auto; color: #2655bd; background: #edf2ff; border-radius: 6px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.integration-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 15px; }
.connected-email { color: #0b7653; font-size: 12px; font-weight: 700; }
.integration-footnote { margin: 14px 0 0; }
.narrow-card { max-width: 650px; }
.settings-card hr { width: 100%; margin: 7px 0; border: 0; border-top: 1px solid var(--border); }
.settings-card h3 { margin: 0; color: #3d4b62; font-size: 13px; }
.settings-card h3 small { color: var(--muted); font-weight: 500; }

.auth-body { min-height: 100vh; background: #101827; }
.auth-shell { display: grid; min-height: 100vh; grid-template-columns: minmax(300px, 1.05fr) minmax(390px, .95fr); }
.auth-intro { display: flex; flex-direction: column; justify-content: space-between; padding: 52px clamp(34px, 7vw, 116px); color: #f8fbff; background: radial-gradient(circle at 10% 12%, #355fff, transparent 34%), radial-gradient(circle at 90% 80%, #1d9f7a, transparent 42%), #111827; }
.auth-intro .brand { margin: 0; }
.auth-intro .eyebrow { color: #b7c8ff; }
.auth-intro h1 { max-width: 570px; margin: 9px 0 16px; font-size: clamp(35px, 4vw, 59px); line-height: .98; letter-spacing: -.06em; }
.auth-intro p { max-width: 510px; margin: 0; color: #c8d0df; font-size: 16px; }
.auth-intro small { color: #aab6cc; }
.auth-card-wrap { display: grid; place-items: center; padding: 30px; background: #f6f8fc; }
.auth-card { width: min(100%, 450px); padding: 34px; background: #fff; border: 1px solid #e5eaf3; border-radius: 19px; box-shadow: 0 20px 55px rgba(15,23,42,.15); }
.auth-card h2 { margin: 6px 0 6px; font-size: 27px; letter-spacing: -.04em; }
.muted { margin: 0 0 24px; color: var(--muted); }
.auth-switch { margin: 20px 0 0; color: var(--muted); font-size: 12px; text-align: center; }

@media (max-width: 1050px) {
  .main-content { padding: 25px; }
  .inbox-layout { grid-template-columns: 330px minmax(400px, 1fr); }
  .settings-grid { grid-template-columns: 1fr; }
  .settings-card:nth-child(3) { grid-column: auto; }
}
@media (max-width: 780px) {
  .app-shell { display: block; }
  .sidebar { position: static; height: auto; padding: 14px; }
  .brand { margin: 0 5px 10px; }
  .workspace-card, .profile-mini, .sidebar-bottom { display: none; }
  .nav-list { display: flex; overflow-x: auto; }
  .nav-item { flex: 0 0 auto; padding: 8px 9px; }
  .main-content { padding: 18px 14px; }
  .page-header { align-items: flex-start; flex-direction: column; margin-bottom: 18px; }
  .inbox-layout { display: block; min-height: 0; }
  .conversation-list-panel { max-height: 380px; border-right: 0; border-bottom: 1px solid var(--border); }
  .conversation-panel { min-height: 560px; }
  .contacts-layout { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-intro { min-height: 330px; padding: 32px; }
  .auth-card-wrap { padding: 22px 14px; }
  .auth-card { padding: 25px; }
}