:root {
    --bg: #f4f6f9;
    --card: #ffffff;
    --text: #1b2430;
    --muted: #667085;
    --border: #e1e5eb;
    --accent: #0067c0;
    --accent-text: #ffffff;
    --danger: #c42b1c;
    --ok-bg: #e6f4ea;  --ok-text: #14602b;
    --err-bg: #fdeceb; --err-text: #8f1d12;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14181d;
        --card: #1e242c;
        --text: #e8ecf1;
        --muted: #98a2b3;
        --border: #2f3743;
        --accent: #4cc2ff;
        --accent-text: #00263d;
        --danger: #ff6b5e;
        --ok-bg: #12301c;  --ok-text: #8fdca5;
        --err-bg: #3a1a17; --err-text: #ffaaa2;
    }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
.icon { width: 1.25em; height: 1.25em; flex: none; vertical-align: -.25em; }
.logo-mark { display: inline-block; width: 22px; height: 22px; margin-right: .5rem; vertical-align: -5px;
             background: url(icons/logo-mark.png) center / contain no-repeat; }
.tabbar { display: none; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.5 "Segoe UI", system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
a { color: var(--accent); }
h1 { font-size: 1.6rem; margin: 0 0 .5rem; }
h2 { font-size: 1.15rem; margin: 0 0 .75rem; }

.topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: .75rem 1rem; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
.topbar nav { display: flex; align-items: center; gap: 1rem; }
.topbar nav a { color: var(--muted); text-decoration: none; }
.topbar nav a.active, .topbar nav a:hover { color: var(--accent); }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 1.5rem 1rem; flex: 1; }
.footer { text-align: center; color: var(--muted); padding: 1rem; font-size: .85rem; }

.card {
    background: var(--card); border: 1px solid var(--border); border-radius: 8px;
    padding: 1.25rem; margin: 1rem 0;
}
.card.narrow { max-width: 420px; margin: 2rem auto; }
.card.empty { text-align: center; padding: 2rem 1rem; }
.danger-zone { border-color: var(--danger); }
.muted { color: var(--muted); }
.center { text-align: center; }

label { display: block; margin-bottom: .9rem; font-weight: 600; font-size: .92rem; }
input[type=text], input[type=email], input[type=password], input[type=tel], input[type=number], select {
    display: block; width: 100%; margin-top: .3rem; padding: .6rem .7rem;
    font: inherit; color: var(--text); background: var(--bg);
    border: 1px solid var(--border); border-radius: 6px;
}
textarea {
    display: block; width: 100%; margin-top: .3rem; padding: .6rem .7rem; resize: vertical;
    font: inherit; color: var(--text); background: var(--bg);
    border: 1px solid var(--border); border-radius: 6px;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.btn, button.link { font: inherit; cursor: pointer; }
.btn {
    display: inline-block; padding: .55rem 1.1rem; border-radius: 6px;
    border: 1px solid var(--border); background: var(--card); color: var(--text);
}
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
.btn.danger  { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: var(--danger); color: #fff; }
.btn.small { padding: .3rem .7rem; font-size: .88rem; }
.btn.full { width: 100%; }
button.link { background: none; border: 0; padding: 0; color: var(--muted); }
button.link:hover { color: var(--accent); }
form.inline { display: inline; margin: 0; }
a.btn { text-decoration: none; }

.alert { padding: .7rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.alert.success { background: var(--ok-bg);  color: var(--ok-text); }
.alert.error   { background: var(--err-bg); color: var(--err-text); }

.table-wrap { padding: 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .75rem 1rem; border-bottom: 1px solid var(--border); }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
tbody tr:last-child td { border-bottom: 0; }
td.actions { text-align: right; }
td.actions form { margin: 0; }
.dot { display: inline-block; width: .6rem; height: .6rem; border-radius: 50%; background: var(--muted); margin-right: .5rem; }
.dot.on { background: #2ea043; }

/* Phones: turn table rows into stacked cards */
@media (max-width: 720px) {
    thead { display: none; }
    tr { display: block; padding: .5rem 0; border-bottom: 1px solid var(--border); }
    tbody tr:last-child { border-bottom: 0; }
    td { display: flex; justify-content: space-between; border: 0; padding: .3rem 1rem; }
    td::before { content: attr(data-label); color: var(--muted); font-size: .85rem; }
    td.actions { justify-content: flex-end; }
    td.actions::before { content: none; }
}

/* Online / Offline label on the devices page */
.badge { display: inline-block; padding: .15rem .6rem; border-radius: 999px; font-size: .8rem; font-weight: 600; background: rgba(128,128,128,.18); color: var(--muted); }
.badge.on { background: rgba(46,160,67,.18); color: #2ea043; }
.badge.on::before { content: ''; display: inline-block; width: .5rem; height: .5rem; border-radius: 50%; background: #2ea043; margin-right: .4rem; }

/* "Your plan" panel and the header chip */
.topbar nav a.plan-chip { padding: .2rem .7rem; border: 1px solid var(--border); border-radius: 999px; font-size: .85rem; color: var(--text); }
.topbar nav a.plan-chip strong { color: var(--accent); }
.plan-upgrade { border-top: 1px solid var(--border); padding-top: .6rem; margin-top: .6rem; }
.plan-row { margin: .35rem 0; }
.plan-row .btn { margin-left: .5rem; }
/* the tick and cross icons in the plan panel (the home page sizes its own in landing.css, which these pages do not load) */
#plan .icon { width: 1.1em; height: 1.1em; flex: none; margin-top: .15em; }
#plan .plan-list { list-style: none; padding: 0; margin: .6rem 0 1rem; display: grid; gap: .4rem; }
#plan .plan-list li { display: flex; gap: .55rem; align-items: flex-start; }
#plan .plan-list li.on .icon { color: #2ea043; }
#plan .plan-list li.off { color: var(--muted); }
#plan .plan-list li.off .icon { color: var(--danger); opacity: .7; }

/* account area */
.account-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 1rem; align-items: stretch; margin-bottom: 1rem; }
.account-grid > .card { margin: 0; }
.big-number { font-size: 1.7rem; font-weight: 700; }
.steps { padding-left: 1.2rem; line-height: 1.6; }
.topbar nav a .nav-tier { margin-left: .3rem; padding: .05rem .5rem; border-radius: 999px; font-size: .75rem; background: rgba(128,128,128,.18); }
.topbar nav a .nav-tier:not(.top) { background: rgba(0,103,192,.15); color: var(--accent); }

.group-title { margin: 1.5rem 0 .6rem; font-size: 1.15rem; }
.group-title .muted { font-weight: 400; }

/* the eye button inside password boxes (assets/app.js) */
.pw-wrap { display: block; position: relative; margin-top: .3rem; }
.pw-wrap input { margin-top: 0; padding-right: 2.7rem; }
.pw-eye { position: absolute; right: .35rem; top: 50%; transform: translateY(-50%); display: flex; align-items: center; justify-content: center;
          width: 2rem; height: 2rem; padding: 0; background: none; border: 0; border-radius: 6px; color: var(--muted); cursor: pointer; }
.pw-eye:hover { color: var(--text); background: var(--border); }
.pw-eye:focus-visible { outline: 2px solid var(--accent); }

/* ---------- Phone web app ---------- */
/* Narrow screens get an app layout: a slim top bar, a bottom tab bar (thumb reach), roomy tap targets, and room for the notch and gesture bar. */
@media (max-width: 720px) {
    body.app { padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right); -webkit-tap-highlight-color: transparent; }
    body.app.signed-in { padding-bottom: calc(64px + env(safe-area-inset-bottom)); }

    .topbar { position: sticky; top: 0; z-index: 30; padding: calc(.55rem + env(safe-area-inset-top)) 1rem .55rem; }
    .brand { font-size: 1.05rem; }
    .signed-in .top-links > a { display: none; }          /* the tab bar carries these */
    .signed-in .top-links { gap: 0; }
    .top-links { gap: .75rem; }
    .top-links a { padding: .45rem .2rem; }

    .container { padding: 1rem 1rem 1.25rem; }
    h1 { font-size: 1.4rem; }
    .group-title { margin-top: 1.25rem; }

    .card { border-radius: 14px; padding: 1rem; margin: .75rem 0; }
    .card.narrow { margin: .75rem auto; max-width: none; }
    .card.empty { padding: 1.5rem 1rem; }
    .account-grid { gap: .75rem; }
    .account-grid > .card { margin: 0; }
    .card > .btn:not(.small), .card > form > .btn:not(.small):not(.full) { width: 100%; text-align: center; }
    .plan-row { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem .5rem; }
    .plan-row .btn { margin-left: auto; }

    /* 16px text stops iPhones from zooming into a box when it is tapped */
    input[type=text], input[type=email], input[type=password], input[type=tel], input[type=number], select { font-size: 16px; min-height: 46px; padding: .65rem .8rem; border-radius: 10px; }
    textarea { font-size: 16px; padding: .65rem .8rem; border-radius: 10px; }
    .pw-eye { width: 2.4rem; height: 2.4rem; }
    .pw-wrap input { padding-right: 3rem; }
    .btn { min-height: 46px; padding: .7rem 1.1rem; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; }
    .btn.small { min-height: 40px; padding: .45rem .9rem; }

    /* devices: each row is its own card inside the group */
    .card.table-wrap { background: none; border: 0; padding: 0; }
    .table-wrap tr { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: .6rem 0; margin-bottom: .6rem; }
    .table-wrap tbody tr:last-child { border-bottom: 1px solid var(--border); }
    .table-wrap td { padding: .25rem 1rem; align-items: center; }
    .table-wrap td.actions { padding-top: .5rem; }
    .table-wrap td.actions form, .table-wrap td.actions .btn { width: 100%; }

    .footer { display: none; }

    .tabbar {
        display: grid; grid-template-columns: repeat(4, 1fr);
        position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
        padding: .3rem env(safe-area-inset-right) calc(.3rem + env(safe-area-inset-bottom)) env(safe-area-inset-left);
        background: color-mix(in srgb, var(--card) 94%, transparent); backdrop-filter: blur(12px);
        border-top: 1px solid var(--border);
    }
    .tabbar a {
        display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .15rem;
        min-height: 54px; border-radius: 12px; color: var(--muted); text-decoration: none; font-size: .72rem; font-weight: 600;
    }
    .tabbar a .icon { width: 1.5rem; height: 1.5rem; }
    .tabbar a.active { color: var(--accent); }
    .tabbar a.active .icon { stroke-width: 2.3; }
    .tabbar a:active { background: var(--border); }
}
/* Installed to the home screen: no browser bars, so the app owns the whole screen */
@media (display-mode: standalone) {
    body.app { overscroll-behavior-y: none; }
    .footer { display: none; }
}