:root {
    --admin-primary: #2FA5A0;
    --admin-primary-dark: #0E5C67;
    --admin-secondary: #3FEFEA;
    --admin-bg: #eef5f5;
    --admin-text: #425058;
    --admin-muted: #7a8892;
    --admin-radius-lg: 24px;
    --admin-radius-md: 16px;
    --admin-shadow: 0 20px 60px rgba(14, 92, 103, 0.15);
    --admin-gradient: linear-gradient(135deg, rgba(47, 165, 160, 0.92), rgba(14, 92, 103, 0.88));
    --admin-navbar-height: 72px;
}

body {
    font-family: 'Poppins', 'Segoe UI', sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
}

.admin-guest {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, rgba(63, 239, 234, 0.2), transparent 55%),
                radial-gradient(circle at bottom right, rgba(14, 92, 103, 0.25), transparent 60%),
                var(--admin-bg);
}

.admin-guest__wrapper {
    width: 100%;
    max-width: 420px;
    padding: 2rem 1.5rem;
}

.admin-guest__card {
    background: #fff;
    border-radius: var(--admin-radius-lg);
    padding: 2.5rem;
    border: 1px solid rgba(14, 92, 103, 0.08);
}

.admin-guest__card .form-control {
    border-radius: var(--admin-radius-md);
    padding: 0.9rem 1.05rem;
    border: 1px solid rgba(14, 92, 103, 0.15);
    box-shadow: none;
}

.admin-guest__card .form-control:focus {
    border-color: rgba(47, 165, 160, 0.55);
    box-shadow: 0 0 0 0.15rem rgba(47, 165, 160, 0.15);
}

.admin-guest__card .btn-primary {
    border: none;
    background: var(--admin-gradient);
    box-shadow: 0 18px 40px rgba(47, 165, 160, 0.3);
}

.admin-app {
    background: var(--admin-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(14, 92, 103, 0.12);
    min-height: var(--admin-navbar-height);
}

.admin-navbar .nav-link {
    color: var(--admin-text);
    font-weight: 500;
}

.admin-navbar .nav-link:hover,
.admin-navbar .nav-link:focus {
    color: var(--admin-primary-dark);
}

.admin-navbar .nav-link .badge {
    font-size: 0.7rem;
    padding: 0.25em 0.5em;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.avatar-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(47, 165, 160, 0.15);
    color: var(--admin-primary-dark);
}

.admin-app__content {
    flex: 1;
}

.admin-shell {
    display: flex;
    flex: 1;
    padding: 1.5rem 1.5rem 2.5rem;
    gap: 1.5rem;
}

.admin-shell__content {
    flex: 1;
    min-width: 0;
}

.admin-sidebar__backdrop {
    position: fixed;
    inset: var(--admin-navbar-height) 0 0 0;
    background: rgba(14, 92, 103, 0.25);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 1030;
}

.admin-sidebar {
    width: 270px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--admin-radius-lg);
    border: 1px solid rgba(14, 92, 103, 0.08);
    box-shadow: var(--admin-shadow);
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: sticky;
    top: calc(var(--admin-navbar-height) + 1.5rem);
    height: fit-content;
    max-height: calc(100vh - var(--admin-navbar-height) - 3rem);
    overflow-y: auto;
}

.admin-sidebar__mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-sidebar__profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-sidebar__avatar {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(47, 165, 160, 0.15);
    color: var(--admin-primary-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    box-shadow: inset 0 0 0 1px rgba(47, 165, 160, 0.2);
}

.admin-sidebar__name {
    font-weight: 600;
    color: var(--admin-primary-dark);
}

.admin-sidebar__menu {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.admin-sidebar__menu-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.admin-sidebar__link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
    border-radius: var(--admin-radius-md);
    font-weight: 500;
    color: var(--admin-text);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
    border: 1px solid transparent;
}

.admin-sidebar__link:hover {
    background: rgba(47, 165, 160, 0.08);
    color: var(--admin-primary-dark);
    border-color: rgba(47, 165, 160, 0.15);
    transform: translateX(4px);
}

.admin-sidebar__link.is-active {
    background: rgba(47, 165, 160, 0.12);
    color: var(--admin-primary-dark);
    border-color: rgba(47, 165, 160, 0.3);
    box-shadow: var(--admin-shadow);
}

.admin-sidebar__link.is-disabled {
    opacity: 0.6;
    pointer-events: none;
    border-style: dashed;
}

.admin-sidebar__item.has-children {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.admin-sidebar__link--group {
    gap: 0.75rem;
}

.admin-sidebar__caret {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--admin-muted);
    transition: color 0.2s ease;
}

.admin-sidebar__caret-icon {
    transition: transform 0.2s ease;
    transform: rotate(-90deg);
}

.admin-sidebar__link.is-active .admin-sidebar__caret {
    color: var(--admin-primary-dark);
}

.admin-sidebar__link.is-active .admin-sidebar__caret-icon {
    transform: rotate(0deg);
}

.admin-sidebar__submenu {
    display: none;
    flex-direction: column;
    gap: 0.4rem;
    margin: 0.35rem 0 0 3.2rem;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease, margin 0.3s ease;
}

.admin-sidebar__item.is-open .admin-sidebar__submenu {
    display: flex;
    max-height: 1000px;
}

.admin-sidebar__item.is-open .admin-sidebar__caret-icon {
    transform: rotate(0deg);
}

.admin-sidebar__item.is-open > .admin-sidebar__link {
    color: var(--admin-primary-dark);
}

.admin-sidebar__item.is-open > .admin-sidebar__link .admin-sidebar__caret {
    color: var(--admin-primary-dark);
}

.admin-sidebar__submenu li {
    list-style: none;
}

.admin-sidebar__sublink {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.55rem 0.85rem;
    border-radius: calc(var(--admin-radius-md) * 0.75);
    color: var(--admin-muted);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s ease, color 0.2s ease;
}

.admin-sidebar__sublink:hover {
    background: rgba(47, 165, 160, 0.08);
    color: var(--admin-primary-dark);
}

.admin-sidebar__sublink.is-active {
    background: rgba(47, 165, 160, 0.12);
    color: var(--admin-primary-dark);
    box-shadow: 0 8px 24px rgba(14, 92, 103, 0.12);
}

.admin-sidebar__sublink-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    display: inline-flex;
}

.admin-sidebar__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: rgba(47, 165, 160, 0.12);
    color: var(--admin-primary-dark);
    font-size: 1.1rem;
}

.admin-sidebar__badge {
    margin-left: auto;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(14, 92, 103, 0.12);
    color: var(--admin-primary-dark);
    border-radius: 999px;
    padding: 0.25rem 0.6rem;
    font-weight: 600;
}

.admin-sidebar__footer .btn {
    border-width: 1px;
}

body.admin-sidebar-open .admin-sidebar__backdrop {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 1199px) {
    .admin-shell {
        padding: 1.25rem 1.25rem 2rem;
    }
}

@media (max-width: 991px) {
    .admin-shell {
        position: relative;
        padding: 1rem 1rem 2rem;
    }

    .admin-sidebar {
        position: fixed;
        top: var(--admin-navbar-height);
        left: 0;
        height: calc(100vh - var(--admin-navbar-height));
        max-height: none;
        border-radius: 0;
        width: 100%;
        max-width: 320px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1035;
        box-shadow: var(--admin-shadow);
    }

    body.admin-sidebar-open .admin-sidebar {
        transform: translateX(0);
    }

    .admin-shell__content {
        width: 100%;
    }
}

@media (max-width: 575px) {
    .admin-sidebar {
        max-width: 280px;
    }
}

.admin-page-header {
    background: #fff;
    border-radius: var(--admin-radius-lg);
    border: 1px solid rgba(14, 92, 103, 0.08);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 992px) {
    .admin-page-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.admin-stat-card {
    background: #fff;
    border-radius: var(--admin-radius-lg);
    border: 1px solid rgba(14, 92, 103, 0.08);
}

.admin-stat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(47, 165, 160, 0.12);
    color: var(--admin-primary-dark);
    font-size: 1.25rem;
}

.admin-panel-card {
    background: #fff;
    border-radius: var(--admin-radius-lg);
    border: 1px solid rgba(14, 92, 103, 0.08);
}

.admin-panel-card .btn-outline-secondary {
    border-radius: var(--admin-radius-md);
    border: 1px solid rgba(14, 92, 103, 0.12);
    color: var(--admin-text);
    padding: 1rem 1.25rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.admin-panel-card .btn-outline-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--admin-shadow);
    border-color: rgba(47, 165, 160, 0.45);
}

.admin-footer {
    background: rgba(255, 255, 255, 0.75);
    border-top: 1px solid rgba(14, 92, 103, 0.12);
    backdrop-filter: blur(14px);
}

.list-group-item-action {
    border-radius: var(--admin-radius-md);
    border: 1px solid rgba(14, 92, 103, 0.08) !important;
    margin-bottom: 0.75rem;
}

.list-group-item-action:hover {
    border-color: rgba(47, 165, 160, 0.35) !important;
    box-shadow: var(--admin-shadow);
    transform: translateY(-2px);
}

.dropdown-menu {
    border-radius: var(--admin-radius-md);
    border: 1px solid rgba(14, 92, 103, 0.1);
    box-shadow: var(--admin-shadow);
}

.admin-stat-card,
.admin-panel-card,
.admin-page-header,
.list-group-item-action {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.admin-stat-card:hover,
.admin-panel-card:hover,
.admin-page-header:hover {
    transform: translateY(-2px);
    box-shadow: var(--admin-shadow);
}

.admin-stat-card--clickable {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.admin-stat-card--clickable:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(14, 92, 103, 0.15);
    border-color: rgba(47, 165, 160, 0.3);
}

@media (max-width: 576px) {
    .admin-guest__card {
        padding: 2rem;
    }

    .admin-page-header {
        padding: 2rem;
    }
}