:root {
    --blue-900: #010a19;
    --blue-800: #04173a;
    --blue-700: #082863;
    --blue-600: #0f3f94;
    --blue-500: #1f5fde;
    --blue-400: #3a7dff;
    --gold-500: #d4af37;
    --gold-400: #edc85c;
    --white: #ffffff;
    --glass-light: rgba(255, 255, 255, 0.08);
    --glass-strong: rgba(255, 255, 255, 0.16);
    --text-muted: rgba(255, 255, 255, 0.78);
    --divider: rgba(255, 255, 255, 0.12);
    --shadow-strong: rgba(2, 10, 38, 0.55);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 75% 0%, rgba(212, 175, 55, 0.2), transparent 35%),
        radial-gradient(circle at 10% 15%, rgba(58, 125, 255, 0.25), transparent 45%),
        linear-gradient(165deg, var(--blue-900) 0%, var(--blue-800) 40%, var(--blue-700) 100%);
    color: var(--white);
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background: url('https://cdn.jsdelivr.net/gh/creativetimofficial/public-assets/white-dots.svg') repeat;
    opacity: 0.08;
    pointer-events: none;
}

a {
    color: var(--gold-500);
    text-decoration: none;
}

a:hover,
a:focus {
    color: var(--white);
}

#sidenav-main {
    background: rgba(3, 15, 38, 0.9);
    backdrop-filter: blur(18px);
    border-right: 1px solid var(--divider);
    box-shadow: 0 25px 45px var(--shadow-strong);
}

#sidenav-main .navbar-brand-img {
    max-height: 54px;
}

.navbar-vertical {
    width: 270px;
}

.navbar-vertical .navbar-nav .nav-link {
    color: var(--text-muted);
    font-weight: 500;
    padding: 0.65rem 1rem;
    border-radius: 14px;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    white-space: nowrap;
}

.navbar-vertical .navbar-nav .nav-link i {
    width: 24px;
    text-align: center;
    font-size: 1rem;
}

.navbar-vertical .navbar-nav .nav-link:hover,
.navbar-vertical .navbar-nav .nav-link.active {
    background: linear-gradient(135deg, rgba(31, 95, 222, 0.2), rgba(212, 175, 55, 0.25));
    color: var(--white);
    box-shadow: 0 15px 30px rgba(4, 23, 58, 0.45);
    transform: translateY(-2px);
}

.navbar-vertical .navbar-heading {
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.72rem;
    color: var(--text-muted);
}

.navbar-top {
    background: rgba(6, 19, 52, 0.82);
    backdrop-filter: blur(18px);
    border-radius: 20px;
    border: 1px solid var(--divider);
    margin: 1.5rem 1.5rem 0;
    box-shadow: 0 20px 45px rgba(3, 13, 40, 0.6);
}

.navbar-top .navbar-brand span {
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.main-content {
    min-height: 100vh;
    padding: clamp(1.5rem, 2vw, 2.5rem);
}

@media (min-width: 992px) {
    .main-content {
        margin-left: 270px;
    }
}

.header {
    border-radius: 26px;
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.12), rgba(16, 63, 148, 0.3));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
    position: relative;
}

.header .mask {
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(16, 63, 148, 0.9), rgba(31, 95, 222, 0.65));
}

.card {
    border: 0;
    border-radius: 22px;
    background: var(--glass-light);
    backdrop-filter: blur(18px);
    color: var(--white);
    box-shadow: 0 22px 48px rgba(3, 13, 40, 0.55);
}

.card-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: transparent;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gold-500);
}

.table {
    color: var(--white);
    margin-bottom: 0;
}

.table thead {
    background: rgba(255, 255, 255, 0.05);
}

.table thead th {
    border: 0;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85);
}

.table tbody tr {
    background: rgba(4, 23, 58, 0.5);
}

.table tbody tr:nth-of-type(even) {
    background: rgba(4, 23, 58, 0.7);
}

.table tbody tr:hover {
    background: rgba(31, 95, 222, 0.18);
}

.table td,
.table th {
    border-color: rgba(255, 255, 255, 0.06);
    vertical-align: middle;
    font-size: clamp(0.82rem, 1.8vw, 0.95rem);
    word-break: break-word;
}

label {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.74rem;
    color: var(--text-muted);
    font-weight: 600;
}

.form-control,
.form-select,
textarea {
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
    padding: 0.65rem 1rem;
    font-weight: 500;
}

.form-control::placeholder,
textarea::placeholder {
    color: rgba(255, 255, 255, 0.55);
}

.form-control:focus,
.form-select:focus,
textarea:focus {
    border-color: rgba(31, 95, 222, 0.75);
    box-shadow: 0 0 0 0.2rem rgba(31, 95, 222, 0.25);
    background: rgba(255, 255, 255, 0.16);
    color: var(--white);
}

.input-group-text {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--gold-500);
}

.btn {
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.65rem 1.85rem;
    border: 0;
}

.btn-primary,
.btn-success {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
    box-shadow: 0 12px 28px rgba(4, 31, 73, 0.6);
}

.btn-warning,
.btn-outline-warning {
    background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
    color: var(--white) !important;
    box-shadow: 0 12px 24px rgba(212, 175, 55, 0.35);
}

.btn-outline-light {
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: var(--white);
    background: transparent;
}

.btn-outline-light:hover,
.btn-outline-light:focus {
    border-color: var(--gold-500);
    color: var(--white);
    background: rgba(212, 175, 55, 0.18);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.25);
}

.badge {
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    letter-spacing: 0.05em;
    font-weight: 700;
}

.badge.bg-warning,
.badge.bg-light,
.badge.bg-white,
.bg-warning,
.bg-light {
    background: linear-gradient(135deg, var(--gold-500), var(--gold-400)) !important;
    color: var(--white) !important;
    font-weight: 700;
}

.bg-white.text-white,
.bg-light.text-white,
.bg-white .text-white,
.bg-light .text-white {
    background: linear-gradient(135deg, var(--gold-500), var(--gold-400)) !important;
    color: var(--white) !important;
    font-weight: 700;
}

.badge.bg-success,
.badge.bg-info,
.badge.bg-primary,
.bg-success,
.bg-info,
.bg-primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-400)) !important;
    color: var(--white) !important;
    font-weight: 700;
}

.badge.bg-danger,
.bg-danger {
    background: linear-gradient(135deg, #03102b, #0a2a60) !important;
    color: var(--white) !important;
    font-weight: 700;
}

.text-danger {
    color: var(--gold-400) !important;
}

.dropdown-menu {
    background: rgba(6, 19, 52, 0.94);
    border: 1px solid var(--divider);
    border-radius: 20px;
    padding: 0.85rem;
    box-shadow: 0 20px 45px rgba(1, 6, 25, 0.75);
}

.dropdown-item {
    color: var(--white);
    border-radius: 12px;
    font-weight: 500;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: rgba(212, 175, 55, 0.2);
    color: var(--white);
}

.dropdown-divider {
    border-top-color: var(--divider);
}

footer {
    color: var(--text-muted);
}

.page-loader {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background:
        radial-gradient(circle at 20% 20%, rgba(212, 175, 55, 0.2), transparent 45%),
        linear-gradient(160deg, var(--blue-900) 0%, var(--blue-800) 40%, var(--blue-700) 100%);
    z-index: 1055;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.page-loader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.page-loader .loader-ring {
    width: 74px;
    height: 74px;
    border: 6px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--gold-500);
    border-radius: 50%;
    animation: loader-spin 0.85s linear infinite;
}

.page-loader p {
    margin-top: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.85);
}

@keyframes loader-spin {
    to {
        transform: rotate(360deg);
    }
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: clamp(1rem, 2vw, 1.5rem);
}

.metric-card {
    padding: clamp(1.4rem, 2vw, 1.8rem);
    min-height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    background: rgba(4, 20, 52, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.metric-card .icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.metric-card .icon-wrapper i {
    font-size: clamp(1.2rem, 4vw, 1.6rem);
    color: var(--gold-400);
}

.metric-card h2,
.metric-card .metric-value {
    font-size: clamp(1.35rem, 4.5vw, 2.5rem);
    margin-bottom: 0;
}

.metric-card small {
    color: var(--text-muted);
}

.table-card {
    overflow: hidden;
}

.table-card .table thead {
    background: rgba(255, 255, 255, 0.08);
}

.table-card .table tbody tr {
    background: rgba(6, 23, 58, 0.55);
}

.table-card .table tbody tr:nth-of-type(even) {
    background: rgba(6, 23, 58, 0.7);
}

.table-card .table tbody tr td small {
    color: var(--text-muted);
}

.alert {
    border: 0;
    border-radius: 16px;
    color: var(--white);
    background: rgba(31, 95, 222, 0.15);
}

.alert-warning {
    background: rgba(212, 175, 55, 0.2);
    color: var(--white);
}

.alert-info {
    background: rgba(31, 95, 222, 0.25);
}

.alert-danger {
    background: rgba(6, 23, 58, 0.85);
}

.badge.text-dark,
.text-dark,
.text-muted {
    color: var(--text-muted) !important;
}

.table-responsive {
    border-radius: 0 0 20px 20px;
}

.avatar {
    background: rgba(255, 255, 255, 0.08);
}

.bg-gradient-dark {
    background: linear-gradient(140deg, rgba(4, 15, 50, 0.9), rgba(31, 95, 222, 0.65)) !important;
}

@media (max-width: 1199.98px) {
    .navbar-top {
        margin-left: 1rem;
        margin-right: 1rem;
    }
}

@media (max-width: 991.98px) {
    #sidenav-main {
        position: fixed;
        inset: 0 auto 0 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 260px;
        z-index: 1050;
    }

    #sidenav-main.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding-top: 5.5rem;
    }

    .navbar-top {
        position: sticky;
        top: 1rem;
        z-index: 1040;
    }

    .metrics-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 767.98px) {
    .navbar-vertical .navbar-nav .nav-link {
        font-size: 0.9rem;
    }

    .table td,
    .table th {
        font-size: 0.82rem;
    }

    .card-header {
        font-size: 0.9rem;
    }
}

@media (max-width: 575.98px) {
    .navbar-top {
        margin-left: 0.75rem;
        margin-right: 0.75rem;
    }

    .metric-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .metric-card .icon-wrapper {
        width: 48px;
        height: 48px;
        border-radius: 16px;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .table-responsive {
        margin-bottom: 1rem;
    }
}