:root {
    /* Impeccable System Color Roles */
    --bs-primary: #2563EB;
    --bs-primary-rgb: 37, 99, 235;
    --bs-primary-hover: #1D4ED8;
    --bs-primary-bg-subtle: #EFF6FF;
    --bs-primary-border-subtle: #BFDBFE;
    --bs-primary-text-emphasis: #1E40AF;

    --bs-success: #059669;
    --bs-success-rgb: 5, 150, 105;
    --bs-success-hover: #047857;
    --bs-success-bg-subtle: #ECFDF5;
    --bs-success-border-subtle: #A7F3D0;
    --bs-success-text-emphasis: #065F46;

    --bs-warning: #D97706;
    --bs-warning-rgb: 217, 119, 6;
    --bs-warning-hover: #B45309;
    --bs-warning-bg-subtle: #FFFBEB;
    --bs-warning-border-subtle: #FDE68A;
    --bs-warning-text-emphasis: #92400E;

    --bs-danger: #E11D48;
    --bs-danger-rgb: 225, 29, 72;
    --bs-danger-hover: #BE123C;
    --bs-danger-bg-subtle: #FFF1F2;
    --bs-danger-border-subtle: #FECDD3;
    --bs-danger-text-emphasis: #9F1239;

    --bs-info: #0891B2;
    --bs-info-rgb: 8, 145, 178;
    --bs-info-hover: #0E7490;
    --bs-info-bg-subtle: #ECFEFF;
    --bs-info-border-subtle: #A5F3FC;
    --bs-info-text-emphasis: #155E75;

    --bs-dark: #1E293B;
    --bs-dark-rgb: 30, 41, 59;

    --bs-body-bg: #F8FAFC;
    --bs-body-color: #0F172A;
    --bs-border-color: rgba(15, 23, 42, 0.08);

    --card-shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.05), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
    --card-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --card-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
}

[data-bs-theme="dark"] {
    --bs-body-bg: #0B0F19;
    --bs-body-color: #F1F5F9;
    --bs-border-color: rgba(255, 255, 255, 0.08);
    --bs-card-bg: #111827;

    --bs-primary: #3B82F6;
    --bs-primary-rgb: 59, 130, 246;
    --bs-primary-bg-subtle: rgba(59, 130, 246, 0.15);
    --bs-primary-border-subtle: rgba(59, 130, 246, 0.3);
    --bs-primary-text-emphasis: #93C5FD;

    --bs-success: #10B981;
    --bs-success-rgb: 16, 185, 129;
    --bs-success-bg-subtle: rgba(16, 185, 129, 0.15);
    --bs-success-border-subtle: rgba(16, 185, 129, 0.3);
    --bs-success-text-emphasis: #6EE7B7;

    --bs-warning: #F59E0B;
    --bs-warning-rgb: 245, 158, 11;
    --bs-warning-bg-subtle: rgba(245, 158, 11, 0.15);
    --bs-warning-border-subtle: rgba(245, 158, 11, 0.3);
    --bs-warning-text-emphasis: #FCD34D;

    --bs-danger: #F43F5E;
    --bs-danger-rgb: 244, 63, 94;
    --bs-danger-bg-subtle: rgba(244, 63, 94, 0.15);
    --bs-danger-border-subtle: rgba(244, 63, 94, 0.3);
    --bs-danger-text-emphasis: #FDA4AF;

    --bs-info: #06B6D4;
    --bs-info-rgb: 6, 182, 212;
    --bs-info-bg-subtle: rgba(6, 182, 212, 0.15);
    --bs-info-border-subtle: rgba(6, 182, 212, 0.3);
    --bs-info-text-emphasis: #67E8F9;
}

html {
    scroll-behavior: smooth;
    font-family: 'Albert Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    font-family: 'Albert Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: -0.01em;
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
}

h1, h2, h3, h4, h5, h6, .display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
    font-family: 'Albert Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: -0.025em;
    font-weight: 700;
}

main > .container,
main > .container-fluid {
    padding: 75px 15px 20px;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.not-set {
    color: var(--bs-danger);
    font-style: italic;
}

/* add sorting icons to gridview sort links */
a.asc:after, a.desc:after {
    content: '';
    left: 3px;
    display: inline-block;
    width: 0;
    height: 0;
    border: solid 5px transparent;
    margin: 4px 4px 2px 4px;
    background: transparent;
}

a.asc:after {
    border-bottom: solid 7px var(--bs-body-color);
    border-top-width: 0;
}

a.desc:after {
    border-top: solid 7px var(--bs-body-color);
    border-bottom-width: 0;
}

.grid-view th {
    white-space: nowrap;
}

.hint-block {
    display: block;
    margin-top: 5px;
    color: var(--bs-secondary-color);
}

.error-summary {
    color: var(--bs-danger-text-emphasis);
    background: var(--bs-danger-bg-subtle);
    border: 1px solid var(--bs-danger-border-subtle);
    border-radius: 8px;
    padding: 10px 20px;
    margin: 0 0 15px 0;
}

/* align navbar brand baseline with nav links */
.navbar > .container,
.navbar > .container-fluid {
    align-items: center;
}

/* Sleek Navbar and Dropdown Menus */
.navbar {
    min-height: 58px;
}
.navbar-nav {
    flex-wrap: nowrap;
}
.navbar-nav .nav-link {
    font-size: 0.90rem;
    padding: 0.4rem 0.65rem;
    white-space: nowrap !important;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
}
.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.08);
}
.navbar .dropdown-menu {
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    padding: 6px;
    min-width: 220px;
}
.navbar .dropdown-item {
    border-radius: 8px;
    padding: 8px 14px;
    font-size: 0.88rem;
    transition: background-color 0.15s;
}
.navbar .dropdown-item:hover {
    background-color: rgba(13, 110, 253, 0.08);
}
.navbar .dropdown-divider {
    margin: 4px 0;
}

/* align the logout "link" (button in form) of the navbar */
.nav li > form > button.logout {
    color: var(--bs-navbar-color);
}

@media (max-width: 767.98px) {
    .navbar-nav .nav-link.logout {
        display: block;
        text-align: left;
        width: 100%;
        padding: 10px 0;
    }
}

.navbar-nav .nav-link.logout:focus,
.navbar-nav .nav-link.logout:hover {
    color: var(--bs-navbar-hover-color);
}

/* AFR Adaptive Theme Logos */
.afr-logo-for-light {
    display: inline-block;
}
.afr-logo-for-dark {
    display: none !important;
}

[data-bs-theme="dark"] .afr-logo-for-light {
    display: none !important;
}
[data-bs-theme="dark"] .afr-logo-for-dark {
    display: inline-block !important;
}

/* Inherently dark containers (like navbar-dark, bg-dark, bg-primary) always display dark-mode/light-colored logo */
.bg-dark .afr-logo-for-light,
.navbar-dark .afr-logo-for-light,
.bg-primary .afr-logo-for-light {
    display: none !important;
}
.bg-dark .afr-logo-for-dark,
.navbar-dark .afr-logo-for-dark,
.bg-primary .afr-logo-for-dark {
    display: inline-block !important;
}

/* Captcha styling & dark mode protection */
.captcha-img-wrapper {
    background: #ffffff;
    border: 1px solid #ced4da;
    border-radius: 8px;
    padding: 2px 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    transition: transform 0.15s ease;
}
.captcha-img-wrapper:hover {
    transform: scale(1.02);
}
.captcha-img-wrapper img {
    cursor: pointer;
    display: block;
    height: 42px;
    width: auto;
}

/* footer logo: light logo by default (light bg-body-tertiary), dark logo for dark theme */
.footer-logo-dark { display: none; }

[data-bs-theme="dark"] .footer-logo-light { display: none; }
[data-bs-theme="dark"] .footer-logo-dark  { display: inline-block; }

/* login inputs: seamless icon inside input (Volt style) */
.login-split-card .input-group {
    border: var(--bs-border-width) solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    overflow: hidden;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}

.login-split-card .input-group .input-group-text {
    background: transparent;
    border: 0;
    padding-left: 1rem;
    padding-right: .75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-split-card .input-group .form-control {
    border: 0;
    background: transparent;
}

.login-split-card .input-group .form-control:focus {
    box-shadow: none;
}

.login-split-card .input-group:focus-within {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 .25rem rgba(var(--bs-primary-rgb), .25);
}

/* validation styles for login split card (browsers with :has()) */
@supports selector(.input-group:has(.is-invalid)) {
    .login-split-card .input-group:has(.is-invalid) ~ .invalid-feedback {
        display: block;
        margin-top: .35rem;
        margin-bottom: .5rem;
    }

    .login-split-card .input-group:has(.is-invalid) {
        border-color: var(--bs-danger);
    }

    .login-split-card .input-group:has(.is-invalid):focus-within {
        box-shadow: 0 0 0 .25rem rgba(var(--bs-danger-rgb), .25);
    }
}

/* fallback validation styles for login split card (browsers without :has()) */
@supports not selector(.input-group:has(.is-invalid)) {
    .login-split-card .invalid-feedback:not(:empty) {
        display: block;
        margin-top: .35rem;
        margin-bottom: .5rem;
    }

    .login-split-card .input-group .form-control.is-invalid {
        border: var(--bs-border-width) solid var(--bs-danger);
    }

    .login-split-card .input-group .form-control.is-invalid:focus {
        box-shadow: 0 0 0 .25rem rgba(var(--bs-danger-rgb), .25);
    }
}

/* login split card */
.login-split-card {
    border-radius: 1rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, .10);
    background-color: var(--bs-gray-100);
    width: 100%;
    max-width: 900px;
}

.login-split-card-wide {
    max-width: 960px;
}

.login-brand-title {
    font-size: 1.75rem;
    line-height: 1.3;
}

.login-brand-text {
    font-size: .9rem;
}

.login-brand-panel {
    background: linear-gradient(135deg, #40B3D8 0%, #3a9cbd 40%, #83C933 100%);
    position: relative;
    min-height: 480px;
}

.login-brand-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(241, 138, 42, .25) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(131, 201, 51, .2) 0%, transparent 40%);
    pointer-events: none;
}

.login-btn {
    background: linear-gradient(135deg, #40B3D8, #3a9cbd);
    border: none;
    font-weight: 600;
    letter-spacing: .02em;
    transition: opacity .2s, transform .1s;
}

.login-btn:hover {
    opacity: .9;
    transform: translateY(-1px);
}

.login-btn:active {
    transform: translateY(0);
}

/* dark mode login card */
[data-bs-theme="dark"] .login-split-card {
    background-color: var(--bs-body-bg);
    box-shadow: 0 0 0 1px var(--bs-border-color), 0 4px 24px rgba(0, 0, 0, .4);
}

[data-bs-theme="dark"] .login-mobile-logo {
    filter: invert(1);
}

/* contact form textarea height */
.site-contact textarea.form-control {
    height: 140px;
}

/* captcha: blend with card background */
.site-contact img[src*="captcha"] {
    border-radius: var(--bs-border-radius);
    mix-blend-mode: multiply;
}

/* dark mode: invert captcha for visibility on dark background */
[data-bs-theme="dark"] .site-contact img[src*="captcha"] {
    mix-blend-mode: screen;
    filter: invert(1) hue-rotate(180deg);
}

/* centered page layout */
.site-login,
.site-contact,
.site-index,
.site-error,
.site-about,
.site-contact-success {
    flex: 1;
}

.site-error .site-error-content,
.site-about .site-about-content,
.site-contact-success .site-contact-success-content {
    width: 100%;
    max-width: 90%;
}

@media (min-width: 576px) {
    .site-error .site-error-content,
    .site-about .site-about-content,
    .site-contact-success .site-contact-success-content {
        max-width: 80%;
    }
}

@media (min-width: 768px) {
    .site-error .site-error-content,
    .site-about .site-about-content,
    .site-contact-success .site-contact-success-content {
        max-width: 60%;
    }
}

@media (min-width: 992px) {
    .site-error .site-error-content,
    .site-about .site-about-content,
    .site-contact-success .site-contact-success-content {
        max-width: 50%;
    }
}

/* hero banner */
.hero-banner {
    background: linear-gradient(135deg, #83C933 0%, #3a9cbd 40%, #40B3D8 100%);
    position: relative;
}

.hero-lead {
    max-width: 520px;
}

.hero-logo {
    height: 120px;
    opacity: .45;
    right: 2.5rem;
    top: 50%;
    transform: translateY(-50%);
}

.hero-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        radial-gradient(circle at 15% 85%, rgba(241, 138, 42, .3) 0%, transparent 45%),
        radial-gradient(circle at 85% 15%, rgba(131, 201, 51, .25) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 50%, rgba(64, 179, 216, .15) 0%, transparent 60%);
    pointer-events: none;
}

/* extension cards */
.extension-card {
    transition: transform .15s ease-in-out, box-shadow .15s ease-in-out;
}

.extension-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .12) !important;
}

.extension-icon {
    font-size: 1.5rem;
    line-height: 1;
}

/* dark mode: extension cards */
[data-bs-theme="dark"] .extension-card {
    background-color: var(--bs-body-bg);
    box-shadow: 0 0 0 1px var(--bs-border-color), 0 2px 8px rgba(0, 0, 0, .3);
}

[data-bs-theme="dark"] .extension-card:hover {
    box-shadow: 0 0 0 1px var(--bs-border-color), 0 8px 24px rgba(0, 0, 0, .4) !important;
}

/* ==========================================================================
   Impeccable Landing Page System
   ========================================================================== */
.site-landing {
    --landing-accent: #2563EB;
    --landing-border: rgba(15, 23, 42, 0.08);
}

.landing-hero {
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    color: #0F172A;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    padding: 3.5rem 2.5rem;
    margin-bottom: 3.5rem;
    box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.06);
}

.landing-hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, rgba(16, 185, 129, 0.04) 50%, transparent 70%);
    pointer-events: none;
    border-radius: 50%;
}

.landing-hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.04) 0%, transparent 70%);
    pointer-events: none;
    border-radius: 50%;
}

[data-bs-theme="dark"] .landing-hero {
    background: #111827;
    color: #F8FAFC;
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.4);
}

.landing-bento-card {
    background: #FFFFFF;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 18px;
    padding: 2rem;
    height: 100%;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
}

.landing-bento-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.08);
    border-color: rgba(15, 23, 42, 0.16);
}

[data-bs-theme="dark"] .landing-bento-card {
    background: #111827;
    border-color: rgba(255, 255, 255, 0.08);
}

[data-bs-theme="dark"] .landing-bento-card:hover {
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.4);
}

.role-switcher-btn {
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: #FFFFFF;
    border-radius: 12px;
    padding: 0.85rem 1.25rem;
    font-weight: 600;
    font-size: 0.92rem;
    color: #334155;
    transition: all 0.2s ease;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.role-switcher-btn:hover {
    background: #F8FAFC;
    border-color: #94A3B8;
    color: #0F172A;
}

.role-switcher-btn.active {
    background: #2563EB;
    color: #FFFFFF;
    border-color: #2563EB;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

[data-bs-theme="dark"] .role-switcher-btn {
    background: #1E293B;
    border-color: rgba(255, 255, 255, 0.1);
    color: #CBD5E1;
}

[data-bs-theme="dark"] .role-switcher-btn:hover {
    background: #334155;
    color: #FFFFFF;
}

[data-bs-theme="dark"] .role-switcher-btn.active {
    background: #3B82F6;
    border-color: #3B82F6;
    color: #FFFFFF;
}

.pricing-card-pro {
    position: relative;
    border: 2px solid #2563EB !important;
    box-shadow: 0 16px 36px -8px rgba(37, 99, 235, 0.12);
}

[data-bs-theme="dark"] .pricing-card-pro {
    border: 2px solid #3B82F6 !important;
    box-shadow: 0 20px 40px -10px rgba(59, 130, 246, 0.2);
}

.pos-mini-table {
    border-radius: 12px;
    padding: 0.75rem;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    transition: transform 0.15s ease;
}

.pos-mini-table.occupied {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.pos-mini-table.vacant {
    background: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.pos-mini-table.billed {
    background: #FEF3C7;
    color: #92400E;
    border: 1px solid #FDE68A;
}

/* Systemic UI Enhancements (Impeccable Color System) */
.navbar.bg-dark {
    background-color: #1E293B !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar .nav-link {
    color: #94A3B8 !important;
    font-weight: 500;
}

.navbar .nav-link:hover, .navbar .nav-link.active {
    color: #FFFFFF !important;
}

.btn {
    font-weight: 600;
    border-radius: 9px;
    letter-spacing: -0.01em;
    transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--bs-primary-hover);
    border-color: var(--bs-primary-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

.card {
    border-color: var(--bs-border-color);
    box-shadow: var(--card-shadow-sm);
}

.form-control, .form-select {
    border-color: var(--bs-border-color);
    border-radius: 9px;
    font-size: 0.92rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.badge {
    font-weight: 600;
    letter-spacing: 0.01em;
}