:root {
    --bg: #0b1220;
    --panel: #121a2b;
    --panel-soft: #172137;
    --text: #eef2ff;
    --muted: #a7b0c5;
    --line: rgba(255,255,255,0.08);
    --accent: #5b8cff;
    --success: #1fb87a;
    --error: #ff5f7a;
    --warning: #ffb648;
    --shadow: 0 18px 45px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: linear-gradient(180deg, #08101f 0%, #0b1220 100%);
    color: var(--text);
}

.layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    padding: 28px 20px;
    border-right: 1px solid var(--line);
    background: rgba(10, 16, 29, 0.9);
    position: sticky;
    top: 0;
    height: 100vh;
}

.brand {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 30px;
}

.brand-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #5b8cff, #7b5cff);
    font-weight: 700;
    font-size: 1.1rem;
}

.brand h1 {
    margin: 0;
    font-size: 1rem;
}

.brand p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.85rem;
}

nav {
    display: grid;
    gap: 8px;
}

.nav-link {
    padding: 12px 14px;
    border: 1px solid transparent;
    text-decoration: none;
    color: var(--text);
    border-radius: 14px;
    background: transparent;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(91, 140, 255, 0.12);
    border-color: rgba(91, 140, 255, 0.25);
}

.sidebar-note {
    margin-top: 24px;
    padding: 16px;
    border-radius: 18px;
    background: var(--panel);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
}

.main {
    padding: 28px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
}

.topbar h2 {
    margin: 0 0 8px;
    font-size: 1.8rem;
}

.topbar p {
    margin: 0;
    color: var(--muted);
}

.status-pill {
    background: rgba(31, 184, 122, 0.16);
    color: #8affcc;
    border: 1px solid rgba(31, 184, 122, 0.3);
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 0.9rem;
}

.stats-grid,
.grid-two {
    display: grid;
    gap: 18px;
    margin-bottom: 18px;
}

.stats-grid {
    grid-template-columns: repeat(4, 1fr);
}

.grid-two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.stat-card span {
    display: block;
    color: var(--muted);
    margin-bottom: 12px;
}

.stat-card strong {
    font-size: 2rem;
}

.card-head {
    margin-bottom: 18px;
}

.card-head h3 {
    margin: 0 0 8px;
}

.card-head p,
.note-box,
.steps,
code {
    color: var(--muted);
}

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

.form-grid .full-width {
    grid-column: 1 / -1;
}

label {
    display: grid;
    gap: 8px;
    font-size: 0.92rem;
}

input,
textarea,
button {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--panel-soft);
    color: var(--text);
    padding: 13px 14px;
    font: inherit;
}

textarea { resize: vertical; }

button {
    cursor: pointer;
    background: linear-gradient(135deg, #5b8cff, #7b5cff);
    border: 0;
    font-weight: 700;
}

button:hover {
    filter: brightness(1.06);
}

.table-wrap {
    overflow: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 14px 12px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

th {
    color: var(--muted);
    font-weight: 600;
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
    border: 1px solid var(--line);
}

.alert.success { background: rgba(31, 184, 122, 0.12); color: #9df2cd; }
.alert.error { background: rgba(255, 95, 122, 0.12); color: #ffb5c1; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.84rem;
    border: 1px solid var(--line);
}

.badge.sent { background: rgba(31, 184, 122, 0.12); color: #9df2cd; }
.badge.failed { background: rgba(255, 95, 122, 0.12); color: #ffb5c1; }

.note-box {
    margin-top: 14px;
    padding: 14px;
    background: rgba(255,255,255,0.03);
    border-radius: 16px;
    border: 1px solid var(--line);
}

.steps {
    margin: 0;
    padding-left: 20px;
    line-height: 1.8;
}

@media (max-width: 1100px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-two { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .main { padding: 16px; }
    .stats-grid, .form-grid { grid-template-columns: 1fr; }
    .topbar { flex-direction: column; align-items: flex-start; }
}


.overview-grid { margin-bottom: 22px; }
.profile-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap:14px; }
.muted { display:block; font-size:12px; color:#94a3b8; margin-bottom:6px; }
.compact { margin-bottom: 12px; }


input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
    justify-self: start;
}
label > span { color: var(--muted); }
code {
    word-break: break-all;
}