:root {
    --bg: #eef2f6;
    --panel: rgba(255, 255, 255, 0.84);
    --panel-border: rgba(112, 133, 158, 0.2);
    --text: #172534;
    --muted: #5f7184;
    --accent: #274c77;
    --accent-soft: #dce8f6;
    --shadow: 0 22px 48px rgba(27, 44, 71, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(39, 76, 119, 0.15), transparent 28%),
        linear-gradient(180deg, #f8fafc 0%, var(--bg) 100%);
}

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

.sidebar {
    padding: 28px 22px;
    background: rgba(16, 28, 43, 0.92);
    color: #f3f7fb;
}

.brand h1,
.page-header h2,
.hero h3,
.panel h3,
.card h4 {
    margin: 0;
}

.brand-kicker,
.eyebrow,
.card-kicker {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.72rem;
    color: #9eb7d6;
}

.brand p,
.panel p,
.card p,
.hero p {
    color: var(--muted);
    line-height: 1.6;
}

.sidebar .brand p {
    color: rgba(243, 247, 251, 0.72);
}

.brand-logo {
    width: 72px;
    height: 72px;
    object-fit: contain;
    margin-bottom: 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px;
}

.nav {
    display: grid;
    gap: 10px;
    margin-top: 28px;
}

.nav a {
    padding: 12px 14px;
    border: 1px solid rgba(158, 183, 214, 0.14);
    border-radius: 12px;
    color: #f3f7fb;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.04);
}

.nav a:hover {
    background: rgba(220, 232, 246, 0.14);
}

.nav a.active {
    background: rgba(220, 232, 246, 0.2);
    border-color: rgba(220, 232, 246, 0.32);
}

.content {
    padding: 30px;
}

.page-header {
    margin-bottom: 20px;
}

.hero,
.panel,
.card {
    border: 1px solid var(--panel-border);
    border-radius: 22px;
    background: var(--panel);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
}

.hero,
.panel {
    padding: 28px;
}

.hero {
    margin-bottom: 24px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.card {
    padding: 22px;
}

.narrow {
    max-width: 560px;
}

.user-summary {
    display: grid;
    gap: 4px;
    margin-top: 24px;
    padding: 16px;
    border-radius: 18px;
    border: 1px solid rgba(158, 183, 214, 0.14);
    background: rgba(255, 255, 255, 0.05);
}

.user-summary span {
    color: rgba(243, 247, 251, 0.76);
    font-size: 0.92rem;
}

.flash-stack {
    display: grid;
    gap: 12px;
    margin-bottom: 20px;
}

.flash-banner {
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(95, 113, 132, 0.2);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow);
}

.flash-banner.success {
    border-color: rgba(44, 122, 85, 0.24);
    color: #1f6b4a;
}

.flash-banner.error {
    border-color: rgba(170, 69, 69, 0.24);
    color: #8e2f2f;
}

.flash-banner.info {
    border-color: rgba(39, 76, 119, 0.22);
    color: #274c77;
}

.module-frame {
    display: grid;
}

.module-frame > *:first-child {
    margin-top: 0;
}

.revamp-login-body {
    background:
        radial-gradient(circle at top left, rgba(39, 76, 119, 0.2), transparent 24%),
        linear-gradient(180deg, #f8fafc 0%, var(--bg) 100%);
}

.login-logo {
    width: 88px;
    height: 88px;
    object-fit: contain;
    display: block;
    margin: 0 auto 14px;
}

.form-grid {
    display: grid;
    gap: 16px;
    margin-top: 18px;
}

.form-grid label {
    display: grid;
    gap: 8px;
    font-weight: 600;
}

.form-grid input {
    padding: 12px 14px;
    border: 1px solid rgba(95, 113, 132, 0.28);
    border-radius: 12px;
    font: inherit;
}

.form-grid button {
    padding: 13px 16px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #274c77 0%, #3d6b9d 100%);
    color: #fff;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

@media (max-width: 960px) {
    .shell {
        grid-template-columns: 1fr;
    }
}