:root {
    --bg: #eaf5ff;
    --panel: #ffffff;
    --panel-2: #f4f9ff;
    --text: #12304a;
    --muted: #5c7288;
    --accent: #4fa6d9;
    --accent-2: #2563eb;
    --danger: #d94f4f;
    --border: rgba(37, 99, 235, 0.14);
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #f6fbff, #dceeff);
    color: var(--text);
}
.app-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}
.sidebar {
    background: rgba(255, 255, 255, 0.78);
    border-right: 1px solid var(--border);
    padding: 22px 18px;
    position: sticky;
    top: 0;
    height: 100vh;
}
.brand-rail { font-size: 1.15rem; margin-bottom: 22px; }
.sidebar-user {
    padding: 14px;
    border-radius: 14px;
    background: var(--panel);
    border: 1px solid var(--border);
    margin-bottom: 16px;
}
.sidebar-label { font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.sidebar-name { font-weight: 700; margin-bottom: 4px; }
.sidebar-role { color: var(--accent-2); font-size: .95rem; }
.side-nav { display: grid; gap: 8px; }
.side-nav a {
    padding: 11px 12px;
    border-radius: 10px;
    border: 1px solid transparent;
    color: var(--text);
    font-weight: 600;
}
.side-nav a:hover { background: rgba(37,99,235,.08); border-color: var(--border); }
.main-panel { min-width: 0; }
a { color: var(--accent-2); text-decoration: none; }
.topbar, .container { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
.topbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 18px 0 0;
}
.brand { font-weight: 700; letter-spacing: .4px; color: var(--text); }
.container { padding: 24px 0 48px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 16px; }
.card, .auth-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 18px 40px rgba(37, 99, 235, .08);
}
.section-head { margin: 8px 0 16px; }
.section-head h1, .section-head h2, .card h3 { margin-top: 0; }
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}
textarea, select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--panel-2);
    color: var(--text);
}
.table-card { overflow-x: auto; margin-top: 16px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.inline-form { display: inline; }
.metric { font-size: 2rem; margin: 8px 0 0; }
.auth-shell { min-height: 75vh; display: grid; place-items: center; }
.auth-card { width: min(420px, 100%); }
label { display: block; margin-top: 12px; margin-bottom: 6px; color: var(--muted); }
input, button {
    width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid rgba(255,255,255,.1);
    background: var(--panel-2); color: var(--text);
}
button { margin-top: 16px; background: var(--accent); color: #ffffff; font-weight: 700; cursor: pointer; border: 1px solid transparent; }
button:hover { filter: brightness(0.96); }
.alert { background: rgba(217,79,79,.12); border: 1px solid rgba(217,79,79,.3); padding: 10px 12px; border-radius: 10px; margin-top: 12px; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 14px; justify-content: flex-end; }
.topbar a { color: var(--accent-2); font-weight: 600; }
.filter-bar {
    display: flex;
    gap: 12px;
    align-items: end;
    flex-wrap: wrap;
    margin: 14px 0 18px;
}
.filter-bar form { display: flex; gap: 12px; flex-wrap: wrap; align-items: end; }
.filter-bar .field { min-width: 240px; }
.summary-box { display: grid; gap: 8px; }
.lead-list { display: grid; gap: 10px; margin-top: 10px; }
.lead-item {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel-2);
}
.chart-canvas { width: 100%; }
.upload-row { display: grid; gap: 10px; }
.page-title { font-weight: 700; color: var(--text); font-size: 1.1rem; }
.chart-list { display: grid; gap: 10px; }
.chart-row { display: grid; grid-template-columns: 120px 1fr 48px; gap: 10px; align-items: center; }
.chart-label, .chart-count { font-size: .95rem; }
.chart-track {
    height: 12px;
    border-radius: 999px;
    background: rgba(37,99,235,.10);
    overflow: hidden;
}
.chart-fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #4fa6d9, #2563eb);
}
@media (max-width: 900px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar {
        position: relative;
        height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }
    .topbar, .container { width: min(1100px, calc(100% - 24px)); }
    .chart-row { grid-template-columns: 1fr; }
}