:root {
    --bg: #050815;
    --panel: #0a0e27;
    --card: #111827;
    --line: rgba(255, 255, 255, 0.08);
    --text: #ffffff;
    --muted: #9ca3af;
    --cyan: #00d4ff;
    --green: #00ff88;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
    font-family: Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}
button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--cyan); text-decoration: none; }

.login-screen {
    min-height: 100%;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at 20% 10%, rgba(0, 212, 255, 0.16), transparent 28%),
        radial-gradient(circle at 80% 90%, rgba(0, 255, 136, 0.12), transparent 26%),
        var(--bg);
}
.login-card {
    width: min(440px, 100%);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 32px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
}
.brand i {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: #0a0e27;
    color: var(--cyan);
    border: 1px solid rgba(0, 212, 255, 0.35);
    font-style: normal;
}
.login-card h1 { margin: 22px 0 6px; font-size: 28px; }
.login-card p { margin: 0 0 18px; color: var(--muted); }
label { display: grid; gap: 6px; margin-bottom: 12px; color: var(--muted); font-size: 13px; }
input, textarea, select {
    width: 100%;
    background: #070b1e;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 12px 14px;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--cyan); }
.btn {
    border: 0;
    border-radius: 999px;
    padding: 12px 18px;
    cursor: pointer;
    background: linear-gradient(90deg, var(--green), var(--cyan));
    color: #050815;
    font-weight: 700;
}
.btn.ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--line);
}
.alert {
    background: rgba(239, 68, 68, 0.12);
    color: #fecaca;
    border: 1px solid rgba(239, 68, 68, 0.35);
    border-radius: 10px;
    padding: 10px 12px;
    margin-bottom: 12px;
}
.alert.ok {
    background: rgba(0, 255, 136, 0.1);
    color: #bbf7d0;
    border-color: rgba(0, 255, 136, 0.3);
}

.shell { height: 100%; display: grid; grid-template-columns: 250px 1fr; }
.side {
    background: #070b1c;
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    padding: 16px 12px;
    min-height: 0;
}
.side nav { display: grid; gap: 4px; margin-top: 16px; overflow: auto; }
.side a, .side button.link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--text);
    background: transparent;
    border: 0;
    text-align: left;
    cursor: pointer;
    width: 100%;
}
.side a.active, .side a:hover, .side button.link:hover { background: rgba(0, 212, 255, 0.08); }
.side .badge {
    min-width: 22px;
    text-align: center;
    border-radius: 999px;
    background: rgba(0, 212, 255, 0.15);
    color: var(--cyan);
    font-size: 12px;
    padding: 2px 6px;
}
.compose-btn { width: 100%; margin-top: 16px; }
.quota { margin-top: auto; padding: 12px 4px 0; color: var(--muted); font-size: 12px; }
.quota .bar { height: 6px; border-radius: 99px; background: #111827; margin: 8px 0; overflow: hidden; }
.quota .bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--green), var(--cyan)); }

.main { min-width: 0; min-height: 0; display: flex; flex-direction: column; background: var(--panel); }
.top {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--line);
}
.search { flex: 1; display: flex; }
.search input { border-radius: 999px; }
.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--green), var(--cyan));
    color: #050815;
    font-weight: 700;
}
.toolbar {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    padding: 14px 18px 8px;
}
.toolbar h1 { margin: 0; font-size: 22px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chips a {
    color: var(--muted);
    border-bottom: 2px solid transparent;
    padding: 6px 2px;
}
.chips a.on { color: var(--text); border-color: var(--cyan); }
.list { overflow: auto; }
.row {
    display: grid;
    grid-template-columns: 28px 28px minmax(160px, 240px) 1fr 90px;
    gap: 10px;
    align-items: center;
    padding: 12px 18px;
    border-top: 1px solid var(--line);
    color: var(--text);
}
.row.unread { background: rgba(0, 212, 255, 0.04); }
.row.unread strong { color: var(--text); }
.row span, .row strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .muted, .when { color: var(--muted); font-size: 13px; }
.pager { display: flex; gap: 8px; align-items: center; color: var(--muted); }
.read, .compose, .panel { padding: 18px 22px 32px; overflow: auto; }
.meta { color: var(--muted); display: grid; gap: 4px; margin-bottom: 14px; }
.frame {
    width: 100%;
    min-height: 68vh;
    border: 0;
    border-radius: 12px;
    background: var(--bg);
}
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.contact {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    padding: 12px 0;
    border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
    .shell { grid-template-columns: 1fr; }
    .side { display: none; }
    .side.open { display: flex; position: fixed; inset: 0 auto 0 0; width: min(280px, 86vw); z-index: 5; }
    .row { grid-template-columns: 24px 1fr auto; }
    .row .subject { display: none; }
    .two { grid-template-columns: 1fr; }
}