:root {
    --erp-bg: #f3efe6;
    --erp-paper: rgba(255, 253, 248, 0.92);
    --erp-panel: #fffaf1;
    --erp-ink: #1f2a30;
    --erp-muted: #6a7479;
    --erp-line: #dccfb8;
    --erp-accent: #0f766e;
    --erp-accent-2: #b45309;
    --erp-shadow: 0 20px 60px rgba(31, 42, 48, 0.14);
}

body.app-body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 28%),
        radial-gradient(circle at top right, rgba(180, 83, 9, 0.1), transparent 24%),
        linear-gradient(180deg, #efe7d8 0%, var(--erp-bg) 45%, #ece6da 100%);
    color: var(--erp-ink);
    min-height: 100vh;
}

.app-shell {
    min-height: 100vh;
}

.app-topbar {
    background: linear-gradient(135deg, #14303a 0%, #0f766e 62%, #d97706 180%);
    box-shadow: var(--erp-shadow);
}

.app-topbar .navbar-brand,
.app-topbar .nav-link,
.app-topbar .navbar-text,
.app-topbar .btn-link {
    color: #fff7ea;
}

.app-topbar .navbar-brand small {
    display: block;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    opacity: 0.75;
}

.app-topbar .form-control,
.app-topbar .btn {
    border-radius: 0.9rem;
}

.app-layout {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 18px;
    padding: 18px;
}

.app-sidebar {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 106px);
    overflow: auto;
    background: var(--erp-paper);
    border: 1px solid rgba(220, 207, 184, 0.9);
    border-radius: 1.5rem;
    box-shadow: var(--erp-shadow);
    backdrop-filter: blur(6px);
}

.app-sidebar__brand {
    padding: 1.25rem 1.25rem 0.75rem;
}

.app-sidebar__eyebrow {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--erp-muted);
}

.app-sidebar__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #17313a;
}

.app-nav {
    --bs-accordion-border-width: 0;
    --bs-accordion-border-color: transparent;
    --bs-accordion-btn-bg: transparent;
    --bs-accordion-active-bg: rgba(15, 118, 110, 0.08);
    --bs-accordion-active-color: #0f766e;
    --bs-accordion-btn-focus-box-shadow: none;
}

.app-nav__item {
    background: transparent;
    border-bottom: 1px solid rgba(220, 207, 184, 0.75);
}

.app-nav__item:last-child {
    border-bottom: 0;
}

.app-nav .accordion-button {
    font-weight: 700;
    color: #20353e;
    padding: 1rem 1.25rem;
}

.app-nav__link {
    background: transparent;
    border: 0;
    border-top: 1px solid rgba(220, 207, 184, 0.48);
    padding: 0.8rem 1.25rem 0.8rem 1.75rem;
    color: #36515d;
}

.app-nav__link:hover,
.app-nav__link:focus,
.app-nav__link.active {
    background: rgba(15, 118, 110, 0.1);
    color: #0f766e;
}

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

.app-main__hero {
    background: rgba(255, 253, 248, 0.88);
    border: 1px solid rgba(220, 207, 184, 0.9);
    border-radius: 1.5rem;
    box-shadow: var(--erp-shadow);
    padding: 1.4rem 1.5rem;
    margin-bottom: 18px;
}

.app-main__hero p {
    margin: 0;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--erp-muted);
}

.app-main__hero h1 {
    margin: 0.35rem 0 0;
    font-size: 2rem;
    color: #16303a;
}

.app-frame-wrap {
    background: rgba(255, 253, 248, 0.88);
    border: 1px solid rgba(220, 207, 184, 0.9);
    border-radius: 1.5rem;
    box-shadow: var(--erp-shadow);
    overflow: hidden;
}

#content-frame {
    width: 100%;
    border: 0;
    background: #fffdf8;
    display: block;
}

.app-login {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.1), transparent 28%),
        radial-gradient(circle at bottom right, rgba(180, 83, 9, 0.12), transparent 24%),
        linear-gradient(180deg, #efe7d8 0%, var(--erp-bg) 45%, #ece6da 100%);
}

.app-login__card {
    width: 100%;
    max-width: 420px;
    background: rgba(255, 253, 248, 0.95);
    border: 1px solid rgba(220, 207, 184, 0.9);
    border-radius: 1.75rem;
    box-shadow: var(--erp-shadow);
    overflow: hidden;
}

.app-login__hero {
    padding: 1.5rem 1.5rem 1rem;
    background: linear-gradient(135deg, #14303a 0%, #0f766e 62%, #d97706 180%);
    color: #fff7ea;
}

.app-login__hero p {
    margin: 0;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    opacity: 0.78;
}

.app-login__hero h1 {
    margin: 0.45rem 0 0;
    font-size: 1.8rem;
}

.app-login__body {
    padding: 1.5rem;
}

.app-login__body .form-control,
.app-login__body .btn {
    border-radius: 0.9rem;
    min-height: 48px;
}

.app-login__body .btn-primary {
    background: linear-gradient(135deg, var(--erp-accent), #115e59);
    border: 0;
}

.app-login__body .btn-primary:hover {
    background: linear-gradient(135deg, #115e59, #0f766e);
}

@media (max-width: 991.98px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .app-sidebar {
        position: static;
        max-height: none;
    }
}