:root {
    --sm-primary: #176b87;
    --sm-primary-dark: #0f4c5c;
    --sm-accent: #f2a65a;
    --sm-ink: #15252d;
    --sm-muted: #647780;
    --sm-canvas: #f3f6f5;
    --sm-surface: #ffffff;
    --sm-border: #dfe7e5;
    font-family: Inter, "Segoe UI", sans-serif;
}

html, body {
    margin: 0;
    min-height: 100%;
    background: var(--sm-canvas);
    color: var(--sm-ink);
}

a { color: inherit; }

.maintenance-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
}

.maintenance-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 24px 18px;
    color: #eef8f6;
    background:
        radial-gradient(circle at 12% 12%, rgba(88, 180, 160, .24), transparent 30%),
        linear-gradient(160deg, #102f38 0%, #0d2530 58%, #081c24 100%);
}

.maintenance-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 5px 7px 28px;
    color: #fff;
    text-decoration: none;
}

.maintenance-brand strong, .login-brand strong {
    display: block;
    font-size: 1.05rem;
    letter-spacing: -.02em;
}

.maintenance-brand small, .login-brand small {
    display: block;
    color: #a9c8c3;
    font-size: .72rem;
}

.brand-symbol {
    width: 42px;
    height: 42px;
    display: inline-grid;
    place-items: center;
    border-radius: 12px;
    background: linear-gradient(135deg, #36a58b, #176b87);
    color: white;
    box-shadow: 0 8px 20px rgba(20, 133, 128, .28);
}

.brand-symbol.large { width: 52px; height: 52px; font-size: 1.25rem; }

.maintenance-nav { display: grid; gap: 6px; }

.maintenance-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 13px;
    border-radius: 10px;
    color: #b9d0cf;
    text-decoration: none;
    transition: .18s ease;
}

.maintenance-nav a:hover {
    color: white;
    background: rgba(255, 255, 255, .07);
}

.maintenance-nav a.active {
    color: white;
    background: linear-gradient(90deg, rgba(48, 164, 139, .32), rgba(23, 107, 135, .24));
    box-shadow: inset 3px 0 #50c2a5;
}

.maintenance-nav i { width: 20px; text-align: center; }

.nav-label {
    margin: 20px 12px 5px;
    color: #6f918e;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.maintenance-main { min-width: 0; }

.maintenance-header {
    min-height: 72px;
    padding: 13px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--sm-border);
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(10px);
}

.maintenance-header strong { display: block; }
.context-caption { display: block; color: var(--sm-muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; }
.user-chip { color: var(--sm-muted); font-size: .9rem; }
.maintenance-content { padding: 28px; }

.page-title { margin: 0; font-size: 1.8rem; font-weight: 700; letter-spacing: -.035em; }
.page-subtitle { margin: 5px 0 0; }

.btn-primary {
    --bs-btn-bg: var(--sm-primary);
    --bs-btn-border-color: var(--sm-primary);
    --bs-btn-hover-bg: var(--sm-primary-dark);
    --bs-btn-hover-border-color: var(--sm-primary-dark);
}

.card, .table-card, .search-filters-card {
    border: 1px solid var(--sm-border) !important;
    box-shadow: 0 10px 26px rgba(25, 58, 65, .06) !important;
}

.metric-card {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 112px;
    padding: 20px;
    border: 1px solid var(--sm-border);
    border-radius: 14px;
    background: var(--sm-surface);
    box-shadow: 0 10px 26px rgba(25, 58, 65, .06);
}

.metric-card strong { display: block; font-size: 1.9rem; line-height: 1; }
.metric-card span:last-child { display: block; margin-top: 7px; color: var(--sm-muted); }
.metric-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 13px; font-size: 1.2rem; }

.welcome-card {
    min-height: 230px;
    position: relative;
    overflow: hidden;
    padding: 38px;
    border-radius: 18px;
    color: white;
    background:
        radial-gradient(circle at 80% 25%, rgba(242, 166, 90, .32), transparent 30%),
        linear-gradient(130deg, #123a46, #176b87);
}

.welcome-card h2 { margin: 8px 0; font-size: 2rem; letter-spacing: -.04em; }
.welcome-card p { max-width: 570px; color: #cbe2df; }
.welcome-icon { position: absolute; right: 7%; bottom: -20px; font-size: 10rem; color: rgba(255,255,255,.08); transform: rotate(-10deg); }
.eyebrow { font-size: .7rem; font-weight: 800; letter-spacing: .16em; color: var(--sm-accent); }

.login-page { min-height: 100vh; display: grid; grid-template-columns: 1.1fr .9fr; background: white; }
.login-presentation {
    position: relative;
    overflow: hidden;
    padding: 42px 7vw;
    display: flex;
    flex-direction: column;
    color: white;
    background:
        radial-gradient(circle at 15% 20%, rgba(50, 169, 143, .3), transparent 27%),
        linear-gradient(145deg, #0b2530, #123f4c);
}
.login-brand { display: flex; align-items: center; gap: 12px; }
.presentation-copy { z-index: 1; margin: auto 0; }
.presentation-copy h1 { max-width: 680px; margin: 12px 0 16px; font-size: clamp(2.5rem, 4.3vw, 4.8rem); line-height: .98; letter-spacing: -.06em; }
.presentation-copy p { max-width: 520px; color: #bbd5d1; font-size: 1.05rem; }
.presentation-art i { position: absolute; color: rgba(255,255,255,.07); }
.gear-one { right: -80px; bottom: -90px; font-size: 24rem; }
.gear-two { right: 29%; bottom: 5%; font-size: 8rem; }
.wrench { left: 5%; bottom: -25px; font-size: 9rem; transform: rotate(-25deg); }
.login-form-panel { display: grid; place-items: center; padding: 38px; background: #fbfdfc; }
.login-form-box { width: min(430px, 100%); }
.login-form-box h2 { margin: 9px 0 5px; font-size: 2rem; letter-spacing: -.04em; }
.login-form-box form { margin-top: 30px; }
.login-form-box .form-control { border-color: var(--sm-border); }
.login-form-box .form-control:focus { border-color: #3a9f91; box-shadow: 0 0 0 .2rem rgba(58,159,145,.14); }
.validation-message { color: #b42318; font-size: .8rem; }
.empty-layout { min-height: 100vh; }

@media (max-width: 900px) {
    .maintenance-shell { grid-template-columns: 82px minmax(0, 1fr); }
    .maintenance-sidebar { padding: 18px 10px; }
    .maintenance-brand > span:last-child, .maintenance-nav span, .nav-label { display: none; }
    .maintenance-brand { justify-content: center; }
    .maintenance-nav a { justify-content: center; }
    .maintenance-content { padding: 18px; }
    .login-page { grid-template-columns: 1fr; }
    .login-presentation { display: none; }
}