canvas {
    border: 1px solid #000;
}

body {
    font-family: "Kanit", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: #f5f7fb;
}

/* ======= HEADER / NAVBAR ======= */
.header-navbar {
    background-color: #ffffff !important;
    border-bottom: 1px solid #e5e7eb !important;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.05);
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.header-navbar .navbar-header {
    background-color: transparent !important;
}

.header-navbar .navbar-brand {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.header-navbar .brand-logo {
    max-height: 30px;
}

.header-navbar .brand-text {
    font-weight: 600;
    font-size: 1rem;
    color: #0f172a;
    letter-spacing: .02em;
}

.header-navbar .nav-item .user-name {
    font-size: .85rem;
    font-weight: 500;
    color: #0f172a;
}

.header-navbar .avatar.avatar-online i {
    background-color: #22c55e;
}

/* ปรับ dropdown user */
.dropdown-menu.dropdown-menu-right {
    border-radius: 12px;
    border-color: #e5e7eb;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .08);
    font-size: .85rem;
}

/* ======= SIDEBAR ======= */
.main-menu.menu-light {
    background-color: #ffffff;
    border-right: 1px solid #e5e7eb;
    box-shadow: 0 0 0 rgba(0,0,0,0); /* ตัดเงาเดิม */
}

.main-menu.menu-light .main-menu-content {
    padding-top: .75rem;
}

.navigation-main {
    padding-top: .5rem;
}

.navigation-main .navigation-header span {
    font-size: .75rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: #9ca3af;
}

.navigation-main .nav-item > a {
    border-radius: 999px;
    margin: .1rem .75rem;
    padding: .4rem .8rem;
    display: flex;
    align-items: center;
    gap: .45rem;
    font-size: .86rem;
    color: #4b5563;
    transition: all .16s ease;
}

.navigation-main .nav-item > a .feather {
    font-size: 1rem;
    color: #22c55e;
}

.navigation-main .nav-item.open > a,
.navigation-main .nav-item > a:hover {
    background: #ecfdf3;
    color: #15803d;
}

.navigation-main .nav-item.open > a .feather,
.navigation-main .nav-item > a:hover .feather {
    color: #16a34a;
}

.navigation-main .menu-content {
    margin-left: .75rem;
    margin-right: .75rem;
    margin-bottom: .25rem;
    border-left: 2px solid #e5e7eb;
}

.navigation-main .menu-content > li > a {
    padding: .25rem .95rem;
    font-size: .82rem;
    color: #6b7280;
    display: flex;
    align-items: center;
    gap: .4rem;
    border-radius: 999px;
    margin: .1rem 0;
    transition: background .15s ease, color .15s ease;
}

.navigation-main .menu-content > li > a .feather {
    font-size: .92rem;
    color: #38bdf8;
}

.navigation-main .menu-content > li.active > a,
.navigation-main .menu-content > li > a:hover {
    background: #e0f2fe;
    color: #0369a1;
}

/* ======= CONTENT AREA ======= */
.app-content {
    background-color: #f5f7fb;
}

.content-wrapper {
    padding: 1.5rem 1.75rem 1.75rem 1.75rem;
}

.content-header-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #0f172a;
}

.content-header-left h3 {
    margin-bottom: .25rem;
}

/* ======= MODERN DASHBOARD CARDS (ใช้ในหน้าลงทะเบียนรับหนังสือได้เลย) ======= */
.es-card-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
}

.es-card {
    background-color: #ffffff;
    border-radius: 18px;
    box-shadow: 0 18px 30px rgba(15, 23, 42, 0.04);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 220px;
    flex: 1 1 220px;
    border: 1px solid #e5e7eb;
}

.es-card-left {
    display: flex;
    flex-direction: column;
    gap: .2rem;
}

.es-card-value {
    font-size: 1.4rem;
    font-weight: 600;
}

.es-card-label {
    font-size: .85rem;
    color: #6b7280;
}

.es-card-bar {
    margin-top: .35rem;
    height: .35rem;
    border-radius: 999px;
    background-color: #e5e7eb;
    overflow: hidden;
}

.es-card-bar span {
    display: block;
    height: 100%;
    border-radius: inherit;
}

.es-card-icon {
    font-size: 2rem;
    opacity: .8;
}

.es-card--orange .es-card-value {
    color: #f97316;
}
.es-card--orange .es-card-icon {
    color: #fdba74;
}
.es-card--orange .es-card-bar span {
    background: #fb923c;
}

.es-card--green .es-card-value {
    color: #16a34a;
}
.es-card--green .es-card-icon {
    color: #4ade80;
}
.es-card--green .es-card-bar span {
    background: #22c55e;
}

.es-card--red .es-card-value {
    color: #ef4444;
}
.es-card--red .es-card-icon {
    color: #fecaca;
}
.es-card--red .es-card-bar span {
    background: #f97373;
}

/* ======= MODALS ======= */
.modal-content {
    border-radius: 16px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 20px 35px rgba(15, 23, 42, 0.18);
}

.modal-header {
    border-bottom: 1px solid #e5e7eb;
    background-color: #f9fafb;
}

.modal-title {
    font-weight: 500;
    color: #111827;
}

/* ======= FOOTER ======= */
.footer.footer-light {
    background-color: #ffffff;
    border-top: 1px solid #e5e7eb;
    font-size: .78rem;
    color: #6b7280;
}

/* ======= RESPONSIVE ======= */
@media (max-width: 991.98px) {
    .content-wrapper {
        padding: 1rem;
    }

    .navigation-main .nav-item > a {
        margin-left: .5rem;
        margin-right: .5rem;
    }
}