:root {
    color-scheme: light;
    --metta-bg: #f8fafc;
    --metta-bg-strong: #f1f5f9;
    --metta-surface: rgba(255, 255, 255, 0.96);
    --metta-surface-solid: #ffffff;
    --metta-surface-soft: #f1f5f9;
    --metta-border: #e2e8f0;
    --metta-border-strong: #cbd5e1;
    --metta-text: #0f172a;
    --metta-text-soft: #64748b;
    --metta-primary: #3b82f6;
    --metta-primary-strong: #2563eb;
    --metta-primary-soft: #eff6ff;
    --metta-action: #2563eb;
    --metta-action-strong: #1d4ed8;
    --metta-accent: #0ea5e9;
    --metta-danger: #ef4444;
    --metta-warning: #f59e0b;
    --metta-shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
    --metta-shadow-soft: 0 4px 12px rgba(15, 23, 42, 0.05);
    --metta-radius: 8px;
    --metta-radius-sm: 6px;
}

html[data-metta-theme="dark"] {
    color-scheme: dark;
    --metta-bg: #0f172a;
    --metta-bg-strong: #1e293b;
    --metta-surface: rgba(30, 41, 59, 0.96);
    --metta-surface-solid: #1e293b;
    --metta-surface-soft: #334155;
    --metta-border: #475569;
    --metta-border-strong: #64748b;
    --metta-text: #f8fafc;
    --metta-text-soft: #94a3b8;
    --metta-primary: #60a5fa;
    --metta-primary-strong: #93c5fd;
    --metta-primary-soft: #1e3a8a;
    --metta-action: #3b82f6;
    --metta-action-strong: #60a5fa;
    --metta-accent: #38bdf8;
    --metta-danger: #fb7185;
    --metta-warning: #fbbf24;
    --metta-shadow: 0 22px 56px rgba(0, 0, 0, 0.4);
    --metta-shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.25);
}

html,
body {
    min-height: 100%;
}

body {
    background: linear-gradient(180deg, var(--metta-bg-strong), var(--metta-bg) 18rem);
    color: var(--metta-text);
    font-family: "IBM Plex Sans Thai", "Sarabun", "Noto Sans Thai", system-ui, sans-serif;
    letter-spacing: 0;
}

html[data-metta-theme="dark"] body.admin-body {
    --bg: var(--metta-bg);
    --bg-light: var(--metta-bg);
    --bg-dark: var(--metta-surface-soft);
    --surface: var(--metta-surface-solid);
    --surface2: #1e293b;
    --card-bg: var(--metta-surface-solid);
    --border: var(--metta-border);
    --border-color: var(--metta-border);
    --rule: var(--metta-border);
    --text: var(--metta-text);
    --text-main: var(--metta-text);
    --text-muted-theme: var(--metta-text-soft);
    --ink: var(--metta-text);
    --ink2: #cbd5e1;
    --dim: var(--metta-text-soft);
    --accent: var(--metta-primary);
    --accent-light: #fcd34d;
    --accent-rgb: 96, 165, 250;
    --p700: #3b82f6;
    --p600: #60a5fa;
    --p500: #93c5fd;
    --p400: #64748b;
    --p300: #475569;
    --p200: #334155;
    --p100: #1e293b;
    --p50: #0f172a;
    --row-hover: #1e293b;
    --th-bg: #334155;
    --th-text: #ffffff;
    --pill-bg: #1e293b;
    --pill-text: #e2e8f0;
    --shadow: var(--metta-shadow-soft);
    --sh: var(--metta-shadow-soft);
    --sh2: var(--metta-shadow);
}

html[data-metta-theme="light"] body.admin-body {
    --bg: var(--metta-bg);
    --bg-light: var(--metta-bg);
    --bg-dark: var(--metta-surface-soft);
    --surface: var(--metta-surface-solid);
    --surface2: #f8fafc;
    --card-bg: var(--metta-surface-solid);
    --border: var(--metta-border);
    --border-color: var(--metta-border);
    --rule: var(--metta-border);
    --text: var(--metta-text);
    --text-main: var(--metta-text);
    --text-muted-theme: var(--metta-text-soft);
    --ink: var(--metta-text);
    --ink2: #1e293b;
    --dim: var(--metta-text-soft);
    --accent: var(--metta-primary-strong);
    --accent-light: #f59e0b;
    --accent-rgb: 59, 130, 246;
    --p700: #1d4ed8;
    --p600: #2563eb;
    --p500: #3b82f6;
    --p400: #60a5fa;
    --p300: #93c5fd;
    --p200: #bfdbfe;
    --p100: #dbeafe;
    --p50: #eff6ff;
    --row-hover: #f1f5f9;
    --th-bg: #e2e8f0;
    --th-text: #0f172a;
    --pill-bg: #f1f5f9;
    --pill-text: #0f172a;
    --shadow: var(--metta-shadow-soft);
    --sh: var(--metta-shadow-soft);
    --sh2: var(--metta-shadow);
}

html[data-metta-theme="dark"] body.admin-body,
html[data-metta-theme="dark"] body.admin-body .content-wrapper {
    background-color: var(--metta-bg);
    color: var(--metta-text);
}

html[data-metta-theme="dark"] body.admin-body .cw {
    background: transparent;
    border: 0;
    box-shadow: none;
}

html[data-metta-theme="dark"] body.admin-body .bg-white,
html[data-metta-theme="dark"] body.admin-body .table-light,
html[data-metta-theme="dark"] body.admin-body .modal-content {
    background-color: var(--metta-surface-solid) !important;
}

html[data-metta-theme="dark"] body.admin-body .text-dark {
    color: var(--metta-text) !important;
}

html[data-metta-theme="dark"] body.admin-body .form-control:disabled,
html[data-metta-theme="dark"] body.admin-body .form-select:disabled {
    background-color: #473956 !important;
    color: #bfb3cd !important;
}

body,
.content-wrapper,
.cw,
.container,
.container-fluid {
    color: var(--metta-text);
}

a {
    color: var(--metta-primary-strong);
}

a:hover {
    color: var(--metta-primary);
}

h1,
h2,
h3,
h4,
h5,
h6,
.card-title,
.modal-title {
    color: var(--metta-text);
}

.text-muted,
.form-text,
small,
.small {
    color: var(--metta-text-soft) !important;
}

.content-wrapper,
.cw,
.report-wrapper,
.report-container,
.main-content,
main > .container,
body > .container:not(.login-container) {
    border-color: var(--metta-border);
}

.content-wrapper,
.cw {
    background: var(--metta-surface);
    border: 1px solid var(--metta-border);
    border-radius: var(--metta-radius);
    box-shadow: var(--metta-shadow);
}

.card,
.panel,
.modal-content,
.dropdown-menu,
.list-group-item,
.accordion-item,
.offcanvas,
.toast {
    background-color: var(--metta-surface-solid);
    border-color: var(--metta-border);
    border-radius: var(--metta-radius);
    box-shadow: var(--metta-shadow-soft);
    color: var(--metta-text);
}

.card-header,
.card-footer,
.modal-header,
.modal-footer,
.accordion-button,
.table > :not(caption) > * > .table-light,
.table-light {
    background-color: var(--metta-surface-soft) !important;
    border-color: var(--metta-border);
    color: var(--metta-text) !important;
}

.accordion-button:not(.collapsed),
.nav-tabs .nav-link.active,
.nav-pills .nav-link.active {
    background-color: var(--metta-primary-soft);
    border-color: var(--metta-border-strong);
    color: var(--metta-text);
}

.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--metta-text);
    --bs-table-border-color: var(--metta-border);
    color: var(--metta-text);
}

.table thead th {
    background-color: var(--metta-surface-soft);
    color: var(--metta-text);
}

.table-hover > tbody > tr:hover > * {
    --bs-table-bg-state: rgba(138, 92, 246, 0.12);
    color: var(--metta-text);
}

html[data-metta-theme="dark"] table:not(.table) {
    background-color: var(--metta-surface-solid);
    border-color: var(--metta-border);
    color: var(--metta-text);
}

html[data-metta-theme="dark"] table:not(.table) th,
html[data-metta-theme="dark"] table:not(.table) td {
    background-color: var(--metta-surface-solid);
    border-color: var(--metta-border);
    color: var(--metta-text);
}

html[data-metta-theme="dark"] table:not(.table) thead th {
    background-color: var(--metta-surface-soft);
}

.form-control,
.form-select,
.input-group-text,
.select2-selection,
.select2-dropdown {
    background-color: var(--metta-surface-solid) !important;
    border-color: var(--metta-border) !important;
    border-radius: var(--metta-radius-sm);
    color: var(--metta-text) !important;
}

.form-control::placeholder {
    color: var(--metta-text-soft);
}

.form-control:focus,
.form-select:focus,
.btn:focus-visible,
.page-link:focus {
    border-color: var(--metta-primary);
    box-shadow: 0 0 0 0.22rem rgba(138, 92, 246, 0.24);
}

.btn {
    border-radius: var(--metta-radius-sm);
    font-weight: 600;
}

.btn-primary,
.bg-primary {
    background: linear-gradient(135deg, var(--metta-action), var(--metta-action-strong)) !important;
    border-color: transparent !important;
    color: #ffffff !important;
}

.btn-outline-primary {
    border-color: var(--metta-border-strong);
    color: var(--metta-primary-strong);
}

.btn-outline-primary:hover {
    background-color: var(--metta-primary);
    border-color: var(--metta-primary);
    color: #ffffff;
}

.btn-secondary,
.btn-light,
.page-link {
    background-color: var(--metta-surface-soft);
    border-color: var(--metta-border);
    color: var(--metta-text);
}

.btn-secondary:hover,
.btn-light:hover,
.page-link:hover {
    background-color: var(--metta-primary-soft);
    border-color: var(--metta-border-strong);
    color: var(--metta-text);
}

.btn-danger,
.bg-danger {
    background-color: var(--metta-danger) !important;
    border-color: transparent !important;
}

.btn-warning,
.bg-warning {
    background-color: var(--metta-warning) !important;
    border-color: transparent !important;
    color: #281905 !important;
}

.badge.bg-light,
.alert-light {
    background-color: var(--metta-surface-soft) !important;
    border-color: var(--metta-border) !important;
    color: var(--metta-text) !important;
}

.pagination .page-item.active .page-link {
    background-color: var(--metta-primary);
    border-color: var(--metta-primary);
    color: #ffffff;
}

.navbar,
.bottom-nav-modern,
.fixed-bottom.navbar {
    border-color: var(--metta-border) !important;
}

.navbar.d-lg-none,
.bottom-nav-modern,
.fixed-bottom.navbar {
    background: rgba(255, 255, 255, 0.88) !important;
    box-shadow: var(--metta-shadow-soft);
    backdrop-filter: blur(18px);
}

html[data-metta-theme="dark"] .navbar.d-lg-none,
html[data-metta-theme="dark"] .bottom-nav-modern,
html[data-metta-theme="dark"] .fixed-bottom.navbar {
    background: rgba(34, 25, 49, 0.92) !important;
}

.bottom-nav-modern .nav-link,
.fixed-bottom .navbar-nav .nav-link {
    color: var(--metta-text-soft) !important;
}

.bottom-nav-modern .nav-link:hover,
.bottom-nav-modern .nav-link.active,
.fixed-bottom .navbar-nav .nav-link:hover {
    background-color: var(--metta-primary-soft);
    color: var(--metta-primary-strong) !important;
}

.login-container {
    background: var(--metta-surface);
    border: 1px solid var(--metta-border);
    border-radius: var(--metta-radius);
    box-shadow: var(--metta-shadow);
    color: var(--metta-text);
}

.login-page,
.academic-index-page {
    background: linear-gradient(-45deg, #eff6ff, #dbeafe, #f3e8ff, #ffffff);
    background-size: 400% 400%;
    animation: mettaGradientBG 15s ease infinite;
    position: relative;
    overflow-x: hidden;
}

@keyframes mettaGradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

html[data-metta-theme="dark"] .login-page,
html[data-metta-theme="dark"] .academic-index-page {
    background: linear-gradient(145deg, #1e293b, #0f172a 58%, #1e293b);
}

/* Drifting Background Blobs */
.bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: 1;
    pointer-events: none;
}

.bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(110px);
    opacity: 0.55;
    mix-blend-mode: multiply;
    pointer-events: none;
    will-change: transform;
}

.bg-blob-1 {
    width: 450px;
    height: 450px;
    background: #dbeafe; /* Soft Light Blue */
    top: -120px;
    left: -120px;
    animation: mettaDrift 28s ease-in-out infinite alternate;
}

.bg-blob-2 {
    width: 550px;
    height: 550px;
    background: #f3e8ff; /* Soft Light Purple */
    bottom: -180px;
    right: -180px;
    animation: mettaDrift 35s ease-in-out infinite alternate-reverse;
}

.bg-blob-3 {
    width: 380px;
    height: 380px;
    background: #eff6ff; /* Soft Pastel Blue */
    top: 35%;
    right: 12%;
    animation: mettaDrift 24s ease-in-out infinite alternate;
}

@keyframes mettaDrift {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    50% {
        transform: translate(60px, 90px) scale(1.15) rotate(180deg);
    }
    100% {
        transform: translate(-40px, 50px) scale(0.9) rotate(360deg);
    }
}

/* Shared Entry Animations & Micro-interactions */
@keyframes containerFadeIn {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

.login-page .login-container,
.academic-index-page .main-container {
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 32px 70px rgba(59, 130, 246, 0.12), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    border-radius: 20px;
    position: relative;
    z-index: 10;
    animation: containerFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

html[data-metta-theme="dark"] .login-page .login-container,
html[data-metta-theme="dark"] .academic-index-page .main-container {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(100, 116, 139, 0.36);
    box-shadow: 0 24px 58px rgba(0, 0, 0, 0.28);
}

.academic-index-page .main-container p,
.academic-index-page .credit {
    color: var(--metta-text-soft);
}

.academic-index-page .id-input {
    background: rgba(255, 255, 255, 0.9) !important;
    border: 2px solid rgba(59, 130, 246, 0.2) !important;
    color: #0f172a !important;
    transition: all 0.3s ease;
}

.academic-index-page .id-input:focus {
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15) !important;
}



.login-page .particles {
    display: none;
}

.login-container h2,
.login-container .subtitle,
.login-container .footer-text {
    color: var(--metta-text);
}

.login-container .subtitle,
.login-container .footer-text {
    color: var(--metta-text-soft);
}

.login-container .btn-outline-secondary {
    border-color: var(--metta-border);
    color: var(--metta-text-soft);
}

.login-container .btn-outline-secondary:hover {
    background-color: var(--metta-primary-soft);
    color: var(--metta-text);
}

html[data-metta-theme="light"] .particles {
    opacity: 0.24;
}

html[data-metta-theme="dark"] .tab-btn:not(.text-white) {
    background-color: var(--metta-surface-soft) !important;
    color: var(--metta-text) !important;
}

html[data-metta-theme="dark"] .no-print.text-blue-800 {
    color: var(--metta-primary-strong) !important;
}

.metta-theme-toggle {
    align-items: center;
    backdrop-filter: blur(18px);
    background: var(--metta-surface);
    border: 1px solid var(--metta-border);
    border-radius: 999px;
    box-shadow: var(--metta-shadow-soft);
    color: var(--metta-primary-strong);
    display: inline-flex;
    height: 42px;
    justify-content: center;
    padding: 0;
    position: fixed;
    right: 18px;
    top: 18px;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    width: 42px;
    z-index: 1100;
}

.metta-theme-toggle:hover {
    background: var(--metta-primary-soft);
    border-color: var(--metta-border-strong);
    transform: translateY(-1px);
}

.metta-theme-toggle svg {
    height: 20px;
    width: 20px;
}

.metta-theme-toggle .metta-sun {
    display: none;
}

html[data-metta-theme="dark"] .metta-theme-toggle .metta-moon {
    display: none;
}

html[data-metta-theme="dark"] .metta-theme-toggle .metta-sun {
    display: block;
}

@media (max-width: 767.98px) {
    .content-wrapper,
    .cw {
        border-radius: var(--metta-radius);
        box-shadow: var(--metta-shadow-soft);
    }

    .metta-theme-toggle {
        right: 12px;
        top: 12px;
    }
}

@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
    }

    .metta-theme-toggle {
        display: none !important;
    }
}

/* Dark Mode Soft Buttons Override */
html[data-metta-theme="dark"] .btn-primary {
    background: rgba(99, 102, 241, 0.2) !important;
    color: #818cf8 !important;
    border: 1px solid rgba(99, 102, 241, 0.3) !important;
    box-shadow: none !important;
}
html[data-metta-theme="dark"] .btn-primary:hover {
    background: rgba(99, 102, 241, 0.3) !important;
}

html[data-metta-theme="dark"] .btn-info {
    background: rgba(14, 165, 233, 0.2) !important;
    color: #38bdf8 !important;
    border: 1px solid rgba(14, 165, 233, 0.3) !important;
}
html[data-metta-theme="dark"] .btn-info:hover {
    background: rgba(14, 165, 233, 0.3) !important;
}

html[data-metta-theme="dark"] .btn-secondary,
html[data-metta-theme="dark"] .btn-light {
    background: rgba(100, 116, 139, 0.2) !important;
    color: #cbd5e1 !important;
    border: 1px solid rgba(100, 116, 139, 0.3) !important;
}
html[data-metta-theme="dark"] .btn-secondary:hover,
html[data-metta-theme="dark"] .btn-light:hover {
    background: rgba(100, 116, 139, 0.3) !important;
}

html[data-metta-theme="dark"] .btn-warning {
    background: rgba(245, 158, 11, 0.2) !important;
    color: #fcd34d !important;
    border: 1px solid rgba(245, 158, 11, 0.3) !important;
}
html[data-metta-theme="dark"] .btn-warning:hover {
    background: rgba(245, 158, 11, 0.3) !important;
}

html[data-metta-theme="dark"] .btn-danger {
    background: rgba(225, 29, 72, 0.2) !important;
    color: #fda4af !important;
    border: 1px solid rgba(225, 29, 72, 0.3) !important;
}
html[data-metta-theme="dark"] .btn-danger:hover {
    background: rgba(225, 29, 72, 0.3) !important;
}