:root {
    --primary-dark: #1a365d;
    --primary: #2b6cb0;
    --primary-light: #ebf4ff;
    --primary-100: #bee3f8;
    --primary-200: #90cdf4;
    --success: #38a169;
    --success-light: #f0fff4;
    --success-100: #c6f6d5;
    --warning: #d69e2e;
    --warning-light: #fffff0;
    --warning-100: #fefcbf;
    --danger: #e53e3e;
    --danger-light: #fff5f5;
    --danger-100: #fed7d7;
    --info: #2b6cb0;
    --info-light: #ebf8ff;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --font-size-base: 0.9375rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,.05), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg: 0 10px 25px rgba(0,0,0,.08), 0 4px 10px rgba(0,0,0,.04);
    --shadow-xl: 0 20px 40px rgba(0,0,0,.1);
    --transition: 0.2s cubic-bezier(.4,0,.2,1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    transition: color var(--transition);
}

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

::selection {
    background-color: var(--primary-200);
    color: var(--gray-800);
}

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.bg-primary-dark {
    background-color: var(--primary-dark) !important;
}

.navbar {
    min-height: 56px;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,.12);
    backdrop-filter: blur(8px);
    background-color: rgba(26, 54, 93, .97) !important;
}

.navbar-brand {
    font-size: 1.1rem;
    letter-spacing: -0.5px;
    font-weight: 700;
}

.navbar .nav-link {
    position: relative;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    transition: background-color var(--transition), color var(--transition);
}

.navbar .nav-link:hover {
    background-color: rgba(255,255,255,.1);
}

.navbar .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background-color: #fff;
    border-radius: 1px;
}

.navbar .dropdown-menu {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.navbar .dropdown-item {
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    transition: background-color var(--transition);
}

.navbar .dropdown-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

.navbar .dropdown-item i {
    width: 1.25rem;
    text-align: center;
}

.main-content {
    padding-top: 64px;
    min-height: 100vh;
}

.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--gray-100);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

.bg-primary-soft {
    background-color: var(--primary-light);
}

.bg-success-soft {
    background-color: var(--success-light);
}

.bg-warning-soft {
    background-color: var(--warning-light);
}

.bg-danger-soft {
    background-color: var(--danger-light);
}

.bg-info-soft {
    background-color: var(--info-light);
}

.btn {
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    font-weight: 600;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-lg {
    padding: 0.625rem 1.5rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(43, 108, 176, .3);
}

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

.btn-success {
    background-color: var(--success);
    border-color: var(--success);
}

.btn-success:hover {
    background-color: #2f855a;
    border-color: #2f855a;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(56, 161, 105, .3);
}

.btn-outline-primary:hover {
    transform: translateY(-1px);
}

.btn-primary-dark {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}

.btn-primary-dark:hover,
.btn-primary-dark:focus {
    background-color: #142b4a;
    border-color: #142b4a;
    color: #fff;
    transform: translateY(-1px);
}

.btn-check:checked + .btn-outline-secondary {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary);
}

.form-control,
.form-select {
    border-radius: var(--border-radius);
    border: 1.5px solid var(--gray-200);
    font-size: 0.9375rem;
    padding: 0.5rem 0.75rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:hover,
.form-select:hover {
    border-color: var(--gray-300);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, .15);
}

.form-control-lg {
    padding: 0.625rem 1rem;
    font-size: 1rem;
}

.form-label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.375rem;
}

.input-group-text {
    background-color: var(--gray-50);
    border: 1.5px solid var(--gray-200);
    color: var(--gray-500);
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #142b4a 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,.04) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,.03) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(255,255,255,.02) 0%, transparent 50%);
    pointer-events: none;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: radial-gradient(circle, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.badge {
    font-size: 0.65rem;
    padding: 0.2em 0.6em;
    font-weight: 600;
    border-radius: 50px;
}

.badge.bg-primary {
    background-color: var(--primary) !important;
}

.badge.bg-success {
    background-color: var(--success) !important;
}

.badge.bg-warning {
    background-color: var(--warning) !important;
    color: #fff;
}

.badge.bg-danger {
    background-color: var(--danger) !important;
}

#calendarTable td {
    height: 60px;
    vertical-align: top;
    padding: 4px;
    font-size: 0.8125rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: background-color var(--transition);
}

#calendarTable td:hover {
    background-color: var(--gray-100);
}

#calendarTable td.today {
    background-color: var(--primary-light);
    font-weight: 700;
    color: var(--primary);
}

#calendarTable td.has-event {
    font-weight: 600;
}

.event-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin: 1px;
}

.skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
    border-radius: var(--border-radius);
}

@keyframes skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.licitacao-card {
    border-left: 4px solid var(--primary);
    transition: all var(--transition);
    cursor: pointer;
}

.licitacao-card:hover {
    border-left-color: var(--success);
    background-color: var(--gray-50);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.licitacao-card .badge-esfera {
    font-size: 0.7rem;
    padding: 0.2em 0.6em;
    border-radius: 50px;
}

.licitacao-card .valor {
    font-size: 1rem;
    font-weight: 700;
    color: var(--success);
}

.stat-card {
    border-radius: var(--border-radius-lg);
    padding: 1.25rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.8125rem;
    font-weight: 600;
    opacity: .8;
}

.stat-card .stat-trend {
    font-size: 0.75rem;
    font-weight: 600;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    opacity: .05;
    pointer-events: none;
}

.notification-item {
    transition: background-color var(--transition);
    border-radius: var(--border-radius);
}

.notification-item.unread {
    background-color: var(--primary-light);
    border-left: 3px solid var(--primary);
}

.notification-item:hover {
    background-color: var(--gray-100);
}

.page-link {
    border: none;
    padding: 0.375rem 0.75rem;
    color: var(--gray-600);
    border-radius: var(--border-radius) !important;
    margin: 0 2px;
    font-weight: 500;
    transition: all var(--transition);
}

.page-link:hover {
    background-color: var(--gray-100);
    color: var(--primary);
}

.page-item.active .page-link {
    background-color: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(43, 108, 176, .3);
}

.modal-content {
    border: none;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--gray-100);
    padding: 1.25rem 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--gray-100);
    padding: 1rem 1.5rem;
}

#onlineIndicator {
    position: fixed;
    bottom: 16px;
    right: 16px;
    z-index: 9999;
    padding: 8px 16px;
    border-radius: 24px;
    font-size: 0.8rem;
    font-weight: 600;
    display: none;
    box-shadow: var(--shadow-lg);
}

.table {
    font-size: 0.875rem;
}

.table thead th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--gray-500);
    border-bottom-width: 1px;
    padding: 0.75rem;
}

.table tbody td {
    padding: 0.75rem;
    vertical-align: middle;
    border-color: var(--gray-100);
}

.table-hover tbody tr {
    transition: background-color var(--transition);
}

.table-hover tbody tr:hover {
    background-color: var(--gray-50);
}

.alert {
    border: none;
    border-radius: var(--border-radius-lg);
}

.toast {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.toast-header {
    border-bottom: none;
}

.list-group-item {
    border-color: var(--gray-100);
    padding: 0.75rem 1rem;
    transition: background-color var(--transition);
}

.list-group-item:first-child {
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
}

.list-group-item:last-child {
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

.progress {
    border-radius: 50px;
    background-color: var(--gray-100);
}

.dropdown-menu {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    transition: background-color var(--transition);
}

.dropdown-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

.dropdown-item i {
    width: 1.25rem;
    text-align: center;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-switch .form-check-input:checked {
    background-color: var(--primary);
}

.form-switch .form-check-input:focus {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%2380c4f0'/%3e%3c/svg%3e");
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

@media (min-width: 768px) {
    #calendarTable td {
        height: 90px;
        padding: 6px;
    }

    .hero-section {
        min-height: 60vh;
    }
}

@media (min-width: 992px) {
    .main-content {
        padding-top: 72px;
    }

    .hero-section {
        min-height: 70vh;
    }
}

.text-primary-dark {
    color: var(--primary-dark) !important;
}

.border-primary-dark {
    border-color: var(--primary-dark) !important;
}

.cursor-pointer {
    cursor: pointer;
}

.min-width-0 {
    min-width: 0;
}

.fw-500 {
    font-weight: 500;
}

.fw-600 {
    font-weight: 600;
}

.fw-700 {
    font-weight: 700;
}

.fw-800 {
    font-weight: 800;
}

.text-decoration-none {
    text-decoration: none !important;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========================================= */
/* NATIVE MOBILE APP UI EXPERIENCE (PWA)     */
/* ========================================= */
body {
    -webkit-tap-highlight-color: transparent;
}

.mobile-bottom-nav {
    display: none;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
    z-index: 1040;
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

.mobile-bottom-nav .nav-item {
    flex: 1;
    text-align: center;
    padding: 0.6rem 0;
    color: var(--gray-500);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
    transition: color 0.2s, transform 0.1s;
}

.mobile-bottom-nav .nav-item:active {
    transform: scale(0.95);
}

.mobile-bottom-nav .nav-item i {
    font-size: 1.35rem;
    margin-bottom: 2px;
}

.mobile-bottom-nav .nav-item span {
    font-size: 0.65rem;
    font-weight: 600;
}

.mobile-bottom-nav .nav-item.active {
    color: var(--primary);
}

.mobile-bottom-nav .nav-item.active i {
    filter: drop-shadow(0 2px 4px rgba(43, 108, 176, 0.3));
}

@media (max-width: 991px) {
    .mobile-bottom-nav {
        display: flex;
    }
    
    .main-content {
        padding-bottom: 85px !important;
    }
    
    /* Optimize KPI cards for mobile Native Feel */
    .stat-card .stat-value {
        font-size: 1.15rem !important; /* Prevents R$ breaking */
    }
    .stat-card .stat-icon {
        width: 36px !important;
        height: 36px !important;
        font-size: 1.1rem !important;
    }
    .stat-card {
        padding: 0.75rem !important;
    }
    .stat-card .stat-label {
        font-size: 0.7rem !important;
        line-height: 1.1;
    }
    
    .fs-mobile-sm {
        font-size: 0.8rem !important;
    }
}