/**
 * Guardião Renal - Tema Moderno Premium
 * Design System Avançado
 */

:root {
    /* Paleta de Cores Principal */
    --primary: #2C5282;
    --primary-dark: #1A3A5E;
    --primary-light: #4A7AA8;
    --secondary: #48BB78;
    --accent: #ED8936;
    --danger: #F56565;
    --warning: #ED8936;
    --success: #48BB78;
    --info: #4299E1;
    --dark: #2D3748;
    --light: #F7FAFC;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #2C5282 0%, #4A7AA8 100%);
    --gradient-success: linear-gradient(135deg, #48BB78 0%, #68D391 100%);
    --gradient-warning: linear-gradient(135deg, #ED8936 0%, #F6AD55 100%);
    --gradient-danger: linear-gradient(135deg, #F56565 0%, #FC8181 100%);
    --gradient-info: linear-gradient(135deg, #4299E1 0%, #63B3ED 100%);
    
    /* Sombras Modernas */
    --shadow-xs: 0 1px 2px 0 rgba(0,0,0,0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0,0,0,0.1);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
}

/* ===== IMPROVEMENTS TO EXISTING DESIGN ===== */

/* Sidebar Moderna */
.sidebar {
    background: var(--gradient-primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-xl);
}

.sidebar .brand h3 {
    color: #FFFFFF !important;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.sidebar .brand .subtitle {
    color: rgba(255, 255, 255, 0.9) !important;
}

.sidebar .nav-link {
    position: relative;
    overflow: hidden;
    color: #FFFFFF !important;
}

.sidebar .nav-link span {
    color: #FFFFFF !important;
}

.sidebar .nav-link i {
    color: #FFFFFF !important;
}

.sidebar .nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: white;
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.sidebar .nav-link:hover::before,
.sidebar .nav-link.active::before {
    transform: scaleY(1);
}

.sidebar .nav-link i {
    transform: scale(1);
    transition: transform 0.3s ease;
    color: #FFFFFF !important;
}

.sidebar .nav-link:hover i {
    transform: scale(1.2) rotate(5deg);
    color: #FFFFFF !important;
}

.sidebar .nav-link.active i {
    color: #FFFFFF !important;
}

/* Cards Premium */
.card {
    border: none;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.card-header {
    position: relative;
    overflow: hidden;
}

.card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

/* Stats Cards Premium */
.stat-card {
    position: relative;
    overflow: hidden;
    border: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.03);
}

.stat-value {
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* Botões Premium */
.btn {
    position: relative;
    overflow: hidden;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.875rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn:active {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--gradient-primary);
    box-shadow: var(--shadow);
    color: #FFFFFF !important;
}

.btn-primary *,
.btn-primary i {
    color: #FFFFFF !important;
}

.btn-success {
    background: var(--gradient-success);
    box-shadow: var(--shadow);
}

.btn-warning {
    background: var(--gradient-warning);
    box-shadow: var(--shadow);
}

.btn-danger {
    background: var(--gradient-danger);
    box-shadow: var(--shadow);
}

/* Tabelas Premium */
.table {
    border: none;
}

.table thead {
    background: var(--gradient-primary);
}

.table thead th {
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.75rem;
    border: none;
    padding: 1.25rem 1rem;
}

.table tbody tr {
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--gray-200);
}

.table tbody tr:hover {
    background: linear-gradient(90deg, rgba(44,82,130,0.05) 0%, transparent 100%);
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.table tbody td {
    padding: 1.25rem 1rem;
    vertical-align: middle;
}

/* Formulários Premium */
.form-control,
.form-select {
    border: 2px solid var(--gray-300);
    transition: all 0.3s ease;
    background: white;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(44,82,130,0.1);
    transform: translateY(-2px);
}

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

/* Badges Premium */
.badge {
    padding: 0.5rem 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.75rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.badge:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow);
}

.bg-primary { background: var(--gradient-primary); }
.bg-success { background: var(--gradient-success); }
.bg-warning { background: var(--gradient-warning); }
.bg-danger { background: var(--gradient-danger); }
.bg-info { background: var(--gradient-info); }

/* Page Header Premium */
.page-header {
    background: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
}

.page-header h1 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Alertas Premium */
.alert {
    border: none;
    border-left: 4px solid;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.alert-info {
    border-left-color: var(--info);
    background: linear-gradient(90deg, rgba(66,153,225,0.1) 0%, rgba(66,153,225,0.05) 100%);
}

.alert-success {
    border-left-color: var(--success);
    background: linear-gradient(90deg, rgba(72,187,120,0.1) 0%, rgba(72,187,120,0.05) 100%);
}

.alert-warning {
    border-left-color: var(--warning);
    background: linear-gradient(90deg, rgba(237,137,54,0.1) 0%, rgba(237,137,54,0.05) 100%);
}

.alert-danger {
    border-left-color: var(--danger);
    background: linear-gradient(90deg, rgba(245,101,101,0.1) 0%, rgba(245,101,101,0.05) 100%);
}

/* Modal Premium */
.modal-content {
    border: none;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.modal-header .btn-close {
    filter: invert(1);
}

.modal-body {
    padding: 2rem;
}

/* Loading Spinner Premium */
.spinner-border {
    border-width: 3px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dropdown Premium */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.dropdown-item {
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    margin-bottom: 0.25rem;
}

.dropdown-item:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateX(5px);
}

.dropdown-divider {
    margin: 0.5rem 0;
    border-color: var(--gray-200);
}

/* Breadcrumb Premium */
.breadcrumb {
    background: transparent;
    padding: 0;
}

.breadcrumb-item a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.breadcrumb-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--gray-600);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '→';
    color: var(--gray-400);
}

/* Progress Bars Premium */
.progress {
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--gray-200);
    overflow: hidden;
}

.progress-bar {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Cards Especiais */
.card-gradient {
    background: var(--gradient-primary);
    color: white;
}

.card-gradient .card-header {
    background: rgba(255,255,255,0.1);
    color: white;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.card-glass {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.card-hover-lift:hover {
    transform: translateY(-10px);
}

/* QR Code Cards */
.border-primary {
    border-width: 3px !important;
    border-style: solid !important;
}

/* Alertas Count Badge */
.position-relative .badge {
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* Video Cards */
.card-hover-scale:hover {
    transform: scale(1.05);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .stat-card {
        margin-bottom: 1rem;
    }
    
    .card:hover {
        transform: translateY(-4px);
    }
    
    .btn:hover {
        transform: none;
    }
}

/* Animações Premium */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

/* Light Mode (Default) */
body {
    background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 100%);
    min-height: 100vh;
}

/* Dark Mode Support (Future) */
@media (prefers-color-scheme: dark) {
    /* Preparado para dark mode */
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: var(--primary);
    color: white;
}

::-moz-selection {
    background: var(--primary);
    color: white;
}

/* Focus Visible */
*:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .sidebar,
    .btn,
    .dropdown {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* Glass Morphism Effects */
.glass {
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.3);
}

/* Utility Classes */
.text-gradient-primary {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: var(--gradient-primary);
}

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.shadow-elegant {
    box-shadow: 0 10px 40px rgba(44,82,130,0.15);
}

.border-gradient {
    border: 3px solid;
    border-image: var(--gradient-primary) 1;
}

/* Animations Premium */
@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px var(--primary); }
    50% { box-shadow: 0 0 20px var(--primary), 0 0 30px var(--primary); }
}

.glow-animation {
    animation: glow 2s ease-in-out infinite;
}