:root {
    --bg-page: #f4f7fb;
    --bg-sidebar: #11263c;
    --accent: #006c8f;
    --accent-soft: #0f8aa9;
    --text-main: #1e2b36;
    --text-muted: #6b7f8f;
    --border-soft: #e6edf3;
}

body {
    background: radial-gradient(circle at top right, #eff6ff 0%, #f4f7fb 45%, #eef3f9 100%);
    color: var(--text-main);
}

.full-height {
    min-height: 100vh;
}

.guest-body {
    background: linear-gradient(135deg, #0e2f4a 0%, #124b73 40%, #2c7ca5 100%);
}

.login-column {
    max-width: 500px;
}

.login-card {
    border-radius: 18px !important;
    border: 1px solid #d8e6f2 !important;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%) !important;
    box-shadow: 0 24px 54px rgba(6, 27, 44, 0.26) !important;
}

.login-branding {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.login-brand-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    background: linear-gradient(135deg, #0f8aa9 0%, #0b647e 100%);
    box-shadow: 0 8px 20px rgba(7, 72, 92, 0.34);
}

.login-brand-icon .icon { margin: 0 !important; font-size: 1.2rem; }
.login-title { margin: 0; font-size: 1.42rem; color: #143249; }
.login-subtitle { margin: 0.25rem 0 0; color: #658097; font-size: 0.95rem; }
.login-divider { margin: 1rem 0 1.1rem; border-top: 1px solid #d9e6f0; }
.login-form-subtitle { color: #6c8598; margin-bottom: 1.05rem; }

.guest-theme-toggle {
    position: fixed !important;
    top: 1rem;
    right: 1rem;
    z-index: 30;
    background: rgba(255, 255, 255, 0.18) !important;
    border-color: rgba(255, 255, 255, 0.42) !important;
    color: #ffffff !important;
}

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

.app-sidebar {
    width: 270px;
    background: linear-gradient(180deg, #0d2235 0%, #102c43 65%, #0d2235 100%);
    color: #d8e6f2;
    position: sticky;
    top: 0;
    height: 100vh;
    box-shadow: 8px 0 24px rgba(8, 25, 39, 0.3);
}

.sidebar-brand {
    padding: 1.8rem 1.2rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand span {
    font-size: 0.85rem;
    color: #9fb7ca;
}

.sidebar-menu {
    margin-top: 0 !important;
    border-radius: 0 !important;
    border: 0 !important;
    background: transparent !important;
}

.sidebar-menu .item {
    color: #d7e6f2 !important;
    padding: 0.95rem 1rem !important;
}

.sidebar-menu .item:hover,
.sidebar-menu .item.active {
    background: rgba(16, 138, 169, 0.18) !important;
}

.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-topbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border-soft);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.6rem;
}

.app-topbar .right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-chip {
    margin: 0 !important;
    border-radius: 12px !important;
    border: 1px solid var(--border-soft) !important;
    background: #f8fbff !important;
}

.app-content {
    padding: 1.5rem;
}

.ui.segment,
.ui.raised.segment,
.ui.table {
    border-radius: 12px !important;
    box-shadow: 0 8px 16px rgba(15, 34, 56, 0.06);
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.kpi-card {
    border-radius: 14px;
    box-shadow: 0 12px 20px rgba(13, 38, 58, 0.08);
    border: 1px solid var(--border-soft);
    background: #fff;
    padding: 1rem;
}

.kpi-card h3 {
    font-size: 2rem;
    color: var(--accent);
    margin: .4rem 0 0;
}

.kpi-card p {
    margin: 0;
    color: var(--text-muted);
}

.no-margin { margin: 0 !important; }
.inline-form { margin: 0; }

@media (max-width: 980px) {
    .app-shell { flex-direction: column; }
    .app-sidebar { width: 100%; height: auto; position: relative; }
    .app-topbar { flex-direction: column; gap: 0.8rem; align-items: flex-start; }
    .kpi-grid { grid-template-columns: 1fr; }
}

:root[data-theme='dark'] {
    --bg-page: #0d1624;
    --bg-sidebar: #09111d;
    --accent: #33a3c4;
    --accent-soft: #2d8dab;
    --text-main: #e2edf8;
    --text-muted: #96adc2;
    --border-soft: #26384a;
}

:root[data-theme='dark'] body {
    background: radial-gradient(circle at top right, #162539 0%, #0d1624 50%, #0b131f 100%);
    color: var(--text-main);
}

:root[data-theme='dark'] .guest-body {
    background: linear-gradient(135deg, #0b1727 0%, #12304d 45%, #174264 100%);
}

:root[data-theme='dark'] .app-sidebar {
    background: linear-gradient(180deg, #070d16 0%, #0c1624 65%, #070d16 100%);
    box-shadow: 8px 0 24px rgba(0, 0, 0, 0.45);
}

:root[data-theme='dark'] .sidebar-brand {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

:root[data-theme='dark'] .sidebar-brand span {
    color: #7d9bb3 !important;
}

:root[data-theme='dark'] .sidebar-menu .item {
    color: #c8dbed !important;
}

:root[data-theme='dark'] .sidebar-menu .item:hover,
:root[data-theme='dark'] .sidebar-menu .item.active {
    background: rgba(51, 163, 196, 0.2) !important;
}

:root[data-theme='dark'] .app-topbar {
    background: #111e2e;
    border-bottom-color: var(--border-soft);
}

:root[data-theme='dark'] .app-topbar .ui.header,
:root[data-theme='dark'] .app-topbar .sub.header,
:root[data-theme='dark'] .app-content h1,
:root[data-theme='dark'] .app-content h2,
:root[data-theme='dark'] .app-content h3,
:root[data-theme='dark'] .app-content h4,
:root[data-theme='dark'] .app-content p,
:root[data-theme='dark'] .app-content label {
    color: var(--text-main) !important;
}

:root[data-theme='dark'] .user-chip,
:root[data-theme='dark'] .ui.segment,
:root[data-theme='dark'] .ui.raised.segment,
:root[data-theme='dark'] .ui.table,
:root[data-theme='dark'] .kpi-card,
:root[data-theme='dark'] .ui.message {
    background: #132334 !important;
    border-color: var(--border-soft) !important;
    color: var(--text-main) !important;
}

:root[data-theme='dark'] .kpi-card h3 {
    color: #57d0f0 !important;
}

:root[data-theme='dark'] .ui.form input,
:root[data-theme='dark'] .ui.form textarea,
:root[data-theme='dark'] .ui.form .ui.selection.dropdown,
:root[data-theme='dark'] .ui.form select,
:root[data-theme='dark'] .ui.dropdown .menu,
:root[data-theme='dark'] .ui.dropdown .menu > .item {
    background: #102133 !important;
    color: #d7e5f3 !important;
    border-color: #294058 !important;
}

:root[data-theme='dark'] .ui.table thead th,
:root[data-theme='dark'] .ui.table tbody td {
    background: transparent !important;
    color: #dbe9f7 !important;
    border-color: #2a3f54 !important;
}

:root[data-theme='dark'] .ui.table thead th {
    background: #16293d !important;
}

.login-form-title {
    margin-bottom: 0.35rem !important;
}

.login-form .field > label {
    color: #234259 !important;
    font-weight: 600 !important;
}

.login-form .ui.left.icon.input > i.icon {
    color: #6f8ca3 !important;
}

.login-form .ui.input > input {
    border-radius: 10px !important;
    border-color: #c8d9e6 !important;
    background: #fbfdff !important;
}

:root[data-theme='dark'] .login-card,
:root[data-theme='dark'] .login-card .ui.header,
:root[data-theme='dark'] .login-title,
:root[data-theme='dark'] .login-subtitle,
:root[data-theme='dark'] .login-form-title,
:root[data-theme='dark'] .login-form-subtitle,
:root[data-theme='dark'] .login-card p,
:root[data-theme='dark'] .login-card label,
:root[data-theme='dark'] .login-card .ui.horizontal.divider,
:root[data-theme='dark'] .login-card .ui.message,
:root[data-theme='dark'] .login-card .ui.message p,
:root[data-theme='dark'] .login-card .content {
    color: #ffffff !important;
}

:root[data-theme='dark'] .login-card {
    background: linear-gradient(180deg, #13283b 0%, #11253a 100%) !important;
    border-color: #2b4258 !important;
}

:root[data-theme='dark'] .login-divider,
:root[data-theme='dark'] .login-card .ui.horizontal.divider:before,
:root[data-theme='dark'] .login-card .ui.horizontal.divider:after {
    border-top-color: #3a556f !important;
    border-color: #3a556f !important;
}

:root[data-theme='dark'] .login-form .ui.input > input,
:root[data-theme='dark'] .login-form .ui.left.icon.input > input {
    background: #102133 !important;
    color: #ffffff !important;
    border-color: #35506a !important;
}

:root[data-theme='dark'] .login-form .ui.input > input::placeholder {
    color: #d1deea !important;
}

:root[data-theme='dark'] .login-form .ui.left.icon.input > i.icon {
    color: #ffffff !important;
}