:root {
    color-scheme: dark;
    --bg: #07111f;
    --bg-soft: #0d1b2e;
    --panel: rgba(16, 31, 52, 0.78);
    --panel-strong: rgba(23, 42, 70, 0.94);
    --line: rgba(148, 163, 184, 0.22);
    --text: #eef6ff;
    --muted: #9fb2c8;
    --emerald: #21c875;
    --cyan: #38c8ff;
    --amber: #ffb84d;
    --rose: #ff6384;
    --violet: #9b7cff;
    --blue: #4e8cff;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background:
        radial-gradient(circle at 16% 10%, rgba(56, 200, 255, .18), transparent 28%),
        radial-gradient(circle at 82% 4%, rgba(33, 200, 117, .16), transparent 26%),
        linear-gradient(135deg, #07111f 0%, #0a1628 46%, #101928 100%);
    color: var(--text);
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

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

.sidebar {
    padding: 22px;
    border-right: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(9, 21, 38, .94), rgba(14, 28, 48, .86));
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.brand-block {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 10px 4px 26px;
}

.brand-cube {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    font-weight: 900;
    color: #06111e;
    background: linear-gradient(145deg, #7ef7b6, #38c8ff 58%, #9b7cff);
    box-shadow: 0 18px 35px rgba(56, 200, 255, .28), inset 0 2px 8px rgba(255,255,255,.55);
    transform: perspective(500px) rotateX(8deg) rotateY(-10deg);
}

.brand-cube.large {
    width: 74px;
    height: 74px;
    margin: 0 auto 14px;
    border-radius: 22px;
    font-size: 24px;
}

.brand-title { font-weight: 800; font-size: 19px; }
.brand-subtitle, .eyebrow, small { color: var(--muted); }

.nav { display: grid; gap: 8px; }
.nav a {
    padding: 13px 14px;
    border-radius: 14px;
    color: #bfd0e3;
    border: 1px solid transparent;
    transition: .18s ease;
}
.nav a:hover, .nav a.active {
    color: var(--text);
    background: linear-gradient(135deg, rgba(33, 200, 117, .18), rgba(56, 200, 255, .16));
    border-color: rgba(126, 247, 182, .25);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
}

.sidebar-footer {
    margin-top: auto;
    padding: 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, .06);
    color: var(--muted);
}
.sidebar-footer a { display: inline-block; color: var(--cyan); margin-top: 6px; }

.main { padding: 26px; min-width: 0; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    margin-bottom: 22px;
}
.topbar h1 { margin: 4px 0 0; font-size: clamp(26px, 4vw, 42px); letter-spacing: 0; }
.top-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.status-pill, .date-pill {
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255,255,255,.07);
    color: var(--muted);
}
.status-pill { color: #9cffcf; }

.metric-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(140px, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}
.metric-grid.compact { grid-template-columns: minmax(260px, 360px); }

.metric-card, .panel-card, .login-card {
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
    border-radius: 22px;
}

.metric-card {
    padding: 20px;
    min-height: 138px;
    transform: perspective(900px) rotateX(1.5deg);
    position: relative;
    overflow: hidden;
}
.metric-card::after {
    content: "";
    position: absolute;
    inset: auto -30px -45px auto;
    width: 110px;
    height: 110px;
    border-radius: 32px;
    background: currentColor;
    opacity: .12;
    transform: rotate(26deg);
}
.metric-card span { color: var(--muted); }
.metric-card strong { display: block; font-size: 32px; margin: 12px 0 8px; }
.emerald { color: var(--emerald); } .cyan { color: var(--cyan); } .amber { color: var(--amber); }
.rose { color: var(--rose); } .violet { color: var(--violet); } .blue { color: var(--blue); }
.metric-card strong, .metric-card small, .metric-card span { color: var(--text); }
.metric-card small { color: var(--muted); }

.split-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 18px;
}
.panel-card { padding: 20px; margin-bottom: 18px; }
.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}
.card-head h2 { margin: 0; font-size: 20px; }
.card-head a, .btn {
    border: 1px solid var(--line);
    background: rgba(255,255,255,.08);
    color: var(--text);
    border-radius: 12px;
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 700;
}
.btn.primary {
    border: 0;
    color: #06111e;
    background: linear-gradient(135deg, #7ef7b6, #38c8ff);
    box-shadow: 0 16px 34px rgba(56,200,255,.22);
}
.btn.small { padding: 7px 10px; border-radius: 10px; font-size: 12px; }
.btn.wide { width: 100%; display: block; text-align: center; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: #cbd9ea; font-size: 12px; text-transform: uppercase; }
td small { display: block; margin-top: 4px; }
code {
    color: #9cffcf;
    background: rgba(33, 200, 117, .12);
    border-radius: 8px;
    padding: 3px 6px;
}

.tag {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(255,255,255,.08);
    color: var(--muted);
    font-weight: 800;
    font-size: 12px;
}
.tag.active, .tag.done { background: rgba(33,200,117,.16); color: #8ff7c4; }
.tag.trial, .tag.pending, .tag.sent { background: rgba(56,200,255,.14); color: #93e4ff; }
.tag.suspended, .tag.blocked, .tag.cancelled { background: rgba(255,99,132,.16); color: #ff9cb2; }
.tag.expired { background: rgba(255,184,77,.16); color: #ffd18c; }

.form-grid {
    display: grid;
    gap: 14px;
}
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.form-grid.five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; }
.span-4 { grid-column: span 4; }
label { display: grid; gap: 7px; color: #cbd9ea; font-weight: 700; }
input, select, textarea {
    width: 100%;
    padding: 12px 13px;
    color: var(--text);
    background: rgba(3, 10, 22, .52);
    border: 1px solid var(--line);
    border-radius: 12px;
    outline: none;
    font: inherit;
}
textarea { min-height: 86px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: rgba(56,200,255,.72); box-shadow: 0 0 0 4px rgba(56,200,255,.11); }
.check { display: flex; align-items: center; gap: 9px; }
.check input { width: auto; }
.search-form, .inline-form { display: flex; gap: 8px; align-items: center; }
.inline-form.wrap { flex-wrap: wrap; }
.search-form input { min-width: 260px; }

.timeline { display: grid; gap: 12px; }
.timeline-item {
    padding: 13px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255,255,255,.045);
}
.timeline-item span, .timeline-item small { display: block; margin-top: 4px; color: var(--muted); }

.alert {
    padding: 13px 15px;
    border-radius: 14px;
    margin-bottom: 16px;
    border: 1px solid var(--line);
    background: rgba(56,200,255,.12);
}
.alert.success { color: #9cffcf; }
.alert.danger { color: #ff9cb2; background: rgba(255,99,132,.13); }

.login-body {
    display: grid;
    place-items: center;
    padding: 24px;
}
.login-card {
    width: min(460px, 100%);
    padding: 30px;
    text-align: center;
}
.install-card { width: min(900px, 100%); text-align: left; }
.login-card h1 { margin: 0 0 8px; }
.login-card p { color: var(--muted); margin-bottom: 22px; }
.login-card form { display: grid; gap: 14px; text-align: left; }
.code-box { display: grid; gap: 10px; }

@media (max-width: 1180px) {
    .metric-grid { grid-template-columns: repeat(3, 1fr); }
    .form-grid.five, .form-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .span-4 { grid-column: span 2; }
}
@media (max-width: 820px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; height: auto; }
    .metric-grid, .split-grid, .form-grid.two, .form-grid.four, .form-grid.five { grid-template-columns: 1fr; }
    .span-2, .span-4 { grid-column: span 1; }
    .topbar, .card-head { align-items: flex-start; flex-direction: column; }
    table { display: block; overflow-x: auto; }
}