:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --text: #17202a;
    --muted: #667085;
    --border: #e4e7ec;
    --primary: #111827;
    --primary-soft: #1f2937;
    --danger: #b42318;
    --success: #067647;
    --shadow: 0 10px 28px rgba(16, 24, 40, .07);
    --radius: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    min-width: 320px;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: inherit; }

button, input { font: inherit; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ---------- Authentication pages ---------- */

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px;
}

.auth-card {
    width: min(100%, 460px);
    padding: 28px;
}

.brand {
    font-size: 22px;
    font-weight: 800;
}

.subtitle {
    margin: 8px 0 24px;
    color: var(--muted);
}

label {
    display: block;
    margin: 16px 0 7px;
    font-size: 14px;
    font-weight: 700;
}

input {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 11px;
    background: #fff;
    font-size: 16px;
}

input:focus {
    outline: 3px solid rgba(17, 24, 39, .12);
    border-color: #667085;
}

button, .button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 15px;
    border: 0;
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 750;
}

button.primary, .button.primary {
    width: 100%;
    margin-top: 20px;
    background: var(--primary);
    color: #fff;
}

.button.primary.compact {
    width: auto;
    margin: 0;
}

.button.secondary {
    background: #eef2f6;
    color: var(--text);
}

.button.danger-outline {
    background: #fff;
    color: var(--danger);
    border: 1px solid #fda29b;
}

.notice {
    margin: 14px 0;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 14px;
}

.notice.error { background: #fef3f2; color: var(--danger); }
.notice.success { background: #ecfdf3; color: var(--success); }

.secret-box {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface-2);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.secret-key {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 1px;
}

.recovery-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 18px 0;
}

.recovery-grid code {
    display: block;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-2);
    text-align: center;
}

/* ---------- Main application ---------- */

.app-shell {
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    width: 264px;
    display: flex;
    flex-direction: column;
    background: var(--primary);
    color: #fff;
}

.sidebar-head {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 11px;
    text-decoration: none;
}

.brand-link strong {
    display: block;
    font-size: 16px;
}

.brand-link small {
    display: block;
    margin-top: 2px;
    color: #98a2b3;
    font-size: 11px;
}

.brand-mark {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: #fff;
    color: var(--primary);
    font-weight: 900;
}

.nav {
    flex: 1;
    overflow-y: auto;
    padding: 14px 10px;
}

.nav a,
.nav-disabled {
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 11px;
    margin: 3px 0;
    padding: 10px 12px;
    border-radius: 10px;
}

.nav a {
    color: #d0d5dd;
    text-decoration: none;
}

.nav a:hover,
.nav a.active {
    background: var(--primary-soft);
    color: #fff;
}

.nav-disabled {
    color: #667085;
    cursor: default;
}

.nav-disabled small {
    margin-left: auto;
    padding: 2px 6px;
    border-radius: 999px;
    background: rgba(255,255,255,.06);
    font-size: 10px;
}

.nav-icon {
    width: 22px;
    text-align: center;
    font-weight: 800;
}

.sidebar-foot {
    padding: 14px 16px 18px;
    border-top: 1px solid rgba(255,255,255,.08);
}

.session-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: #344054;
    font-weight: 800;
}

.session-user-text {
    min-width: 0;
}

.session-user-text strong,
.session-user-text small {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.session-user-text strong {
    font-size: 13px;
}

.session-user-text small {
    margin-top: 2px;
    color: #98a2b3;
    font-size: 11px;
}

.logout-link {
    display: inline-block;
    margin-top: 12px;
    color: #d0d5dd;
    font-size: 13px;
}

.content-shell {
    min-height: 100vh;
    margin-left: 264px;
}

.mobile-header {
    display: none;
}

.main {
    width: min(100%, 1500px);
    margin: 0 auto;
    padding: 30px;
}

.page-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.page-head h1 {
    margin: 0;
    font-size: clamp(26px, 3vw, 34px);
    line-height: 1.1;
}

.page-head p {
    margin: 6px 0 0;
    color: var(--muted);
}

.desktop-user {
    text-align: right;
}

.desktop-user strong,
.desktop-user a {
    display: block;
}

.desktop-user strong {
    font-size: 13px;
}

.desktop-user a {
    margin-top: 3px;
    color: var(--muted);
    font-size: 12px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.security-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric {
    min-height: 126px;
    padding: 18px;
}

.metric span,
.eyebrow {
    display: block;
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .03em;
    text-transform: uppercase;
}

.metric strong {
    display: block;
    margin-top: 10px;
    font-size: 30px;
    line-height: 1;
}

.metric strong.metric-word {
    font-size: 22px;
}

.metric small {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 12px;
}

.welcome-card,
.section-card {
    margin-top: 16px;
    padding: 22px;
}

.welcome-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.welcome-card h2,
.section-card h2 {
    margin: 7px 0 6px;
    font-size: 20px;
}

.welcome-card p,
.section-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.status-pill,
.current-label,
.badge-soon {
    white-space: nowrap;
    padding: 7px 10px;
    border-radius: 999px;
    background: #ecfdf3;
    color: var(--success);
    font-size: 12px;
    font-weight: 800;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.quick-card {
    min-height: 86px;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px;
    text-decoration: none;
}

.quick-card:not(.disabled-card):hover {
    border-color: #c8cdd5;
    transform: translateY(-1px);
}

.quick-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: #f2f4f7;
    font-weight: 900;
}

.quick-card strong,
.quick-card small {
    display: block;
}

.quick-card small {
    margin-top: 3px;
    color: var(--muted);
}

.quick-arrow {
    margin-left: auto;
    color: var(--muted);
    font-size: 30px;
}

.disabled-card {
    opacity: .75;
}

.badge-soon {
    margin-left: auto;
    background: #f2f4f7;
    color: var(--muted);
}

.section-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.session-list {
    margin-top: 18px;
    border-top: 1px solid var(--border);
}

.session-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.session-main {
    min-width: 0;
    display: flex;
    align-items: flex-start;
    gap: 11px;
}

.session-icon {
    color: var(--success);
}

.session-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 5px 12px;
    margin-top: 5px;
    color: var(--muted);
    font-size: 12px;
}

.icon-button {
    min-width: 42px;
    min-height: 42px;
    padding: 0;
    border-radius: 10px;
    background: transparent;
    color: inherit;
}

.sidebar-close {
    display: none;
    color: #fff;
    font-size: 28px;
}

.sidebar-backdrop {
    display: none;
}

/* ---------- Helpers ---------- */

.muted { color: var(--muted); }
.small { font-size: 13px; }
.spaced-top { margin-top: 18px; }
.center { text-align: center; }
.break-word { overflow-wrap: anywhere; word-break: break-word; }

/* ---------- Tablet ---------- */

@media (max-width: 1050px) {
    .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .security-metrics {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* ---------- Mobile ---------- */

@media (max-width: 760px) {
    body.sidebar-open {
        overflow: hidden;
    }

    .sidebar {
        width: min(86vw, 310px);
        transform: translateX(-105%);
        transition: transform .2s ease;
        box-shadow: 12px 0 30px rgba(0,0,0,.18);
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .sidebar-close {
        display: inline-grid;
        place-items: center;
    }

    .sidebar-backdrop {
        position: fixed;
        inset: 0;
        z-index: 30;
        background: rgba(15, 23, 42, .45);
    }

    body.sidebar-open .sidebar-backdrop {
        display: block;
    }

    .content-shell {
        margin-left: 0;
    }

    .mobile-header {
        position: sticky;
        top: 0;
        z-index: 20;
        min-height: 60px;
        display: grid;
        grid-template-columns: 44px 1fr 44px;
        align-items: center;
        padding: 8px 12px;
        background: rgba(255,255,255,.96);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(10px);
    }

    .menu-button {
        display: grid;
        place-items: center;
        font-size: 22px;
    }

    .mobile-brand {
        justify-self: center;
        text-decoration: none;
        font-weight: 850;
    }

    .mobile-security {
        justify-self: end;
        width: 40px;
        height: 40px;
        display: grid;
        place-items: center;
        border-radius: 10px;
        text-decoration: none;
        background: #f2f4f7;
    }

    .main {
        padding: 18px 14px 28px;
    }

    .page-head {
        margin-bottom: 16px;
    }

    .desktop-user {
        display: none;
    }

    .metric-grid,
    .security-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .metric {
        min-height: 110px;
        padding: 15px;
    }

    .metric strong {
        font-size: 26px;
    }

    .welcome-card,
    .section-card {
        padding: 17px;
    }

    .welcome-card,
    .section-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .quick-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .session-item {
        align-items: flex-start;
        flex-direction: column;
    }

    .session-item form,
    .session-item .button {
        width: 100%;
    }

    .session-meta {
        flex-direction: column;
        gap: 3px;
    }

    .recovery-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 420px) {
    .metric-grid,
    .security-metrics {
        grid-template-columns: 1fr;
    }

    .page-head h1 {
        font-size: 27px;
    }

    .auth-shell {
        padding: 12px;
    }

    .auth-card {
        padding: 22px 18px;
        border-radius: 14px;
    }
}