/* Modern Reset and Base Styles */
:root {
    /* Modern Color Palette */
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #10B981;
    --secondary-dark: #059669;
    --warning: #F59E0B;
    --warning-dark: #D97706;
    --danger: #EF4444;
    --danger-dark: #DC2626;
    --success: #10B981;
    --dark: #1F2937;
    --light: #F8FAFC;
    --gray-100: #F9FAFB;
    --gray-200: #F3F4F6;
    --gray-300: #E5E7EB;
    --gray-400: #D1D5DB;
    --gray-500: #9CA3AF;
    --gray-600: #6B7280;
    --gray-700: #4B5563;
    --gray-800: #374151;
    --gray-900: #1F2937;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    
    /* Transition */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
}

/* Light/Dark mode variables */
:root, :root.light-mode {
    --bg-body: var(--light);
    --bg-card: #FFFFFF;
    --bg-sidebar: linear-gradient(180deg, var(--gray-800) 0%, var(--gray-900) 100%);
    --bg-sidebar-item-hover: rgba(255, 255, 255, 0.1);
    --bg-sidebar-item-active: rgba(255, 255, 255, 0.15);
    --text-main: var(--gray-900);
    --text-muted: var(--gray-600);
    --text-sidebar: var(--gray-100);
    --text-sidebar-muted: var(--gray-400);
    --border-color: var(--gray-200);
    --header-bg: #FFFFFF;
    --header-border: var(--gray-200);
}

:root.dark-mode {
    --bg-body: var(--gray-900);
    --bg-card: var(--gray-800);
    --bg-sidebar: linear-gradient(180deg, #0F172A 0%, #020617 100%);
    --bg-sidebar-item-hover: rgba(255, 255, 255, 0.05);
    --bg-sidebar-item-active: rgba(255, 255, 255, 0.1);
    --text-main: var(--gray-100);
    --text-muted: var(--gray-400);
    --text-sidebar: var(--gray-100);
    --text-sidebar-muted: var(--gray-400);
    --border-color: var(--gray-700);
    --header-bg: var(--gray-800);
    --header-border: var(--gray-700);
}

/* Base reset and styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header Styles */
header {
    background-color: var(--header-bg);
    color: var(--text-main);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--header-border);
    position: sticky;
    top: 0;
    z-index: 10;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-main);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Modern Navigation */
nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav li {
    position: relative;
}

nav a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    display: inline-block;
    transition: color var(--transition-fast);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width var(--transition-normal);
}

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

nav a:hover::after {
    width: 100%;
}

/* Dark Mode Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--gray-200);
}

.dark-mode .theme-toggle:hover {
    background-color: var(--gray-700);
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem 0;
    min-height: 0;
}

/* Modern Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    line-height: 1.5;
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    cursor: pointer;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease-out, height 0.4s ease-out;
}

.btn:hover::after {
    width: 300%;
    height: 300%;
}

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

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

.btn-secondary {
    color: #fff;
    background-color: var(--gray-600);
    border-color: var(--gray-600);
}

.btn-secondary:hover {
    background-color: var(--gray-700);
    border-color: var(--gray-700);
}

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

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

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

.btn-danger:hover {
    background-color: var(--danger-dark);
    border-color: var(--danger-dark);
}

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

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

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

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-icon {
    padding: 0.625rem;
    border-radius: var(--radius-lg);
}

.btn-icon-only {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
    transition: color var(--transition-normal);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-main);
    background-color: var(--bg-card);
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.dark-mode .form-control {
    background-color: var(--gray-800);
    border-color: var(--gray-700);
}

.dark-mode .form-control:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.form-text {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.form-check-input {
    margin-right: 0.5rem;
    width: 1rem;
    height: 1rem;
}

.form-check-label {
    margin-bottom: 0;
}

/* Card Styles */
.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), 
                background-color var(--transition-normal);
    overflow: hidden;
    height: 100%;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-card);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card);
}

/* Alert Styles */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--radius);
    border-left: 4px solid transparent;
}

.alert-success {
    color: var(--success);
    background-color: rgba(16, 185, 129, 0.1);
    border-left-color: var(--success);
}

.alert-danger {
    color: var(--danger);
    background-color: rgba(239, 68, 68, 0.1);
    border-left-color: var(--danger);
}

.alert-warning {
    color: var(--warning);
    background-color: rgba(245, 158, 11, 0.1);
    border-left-color: var(--warning);
}

.alert-info {
    color: var(--primary);
    background-color: rgba(59, 130, 246, 0.1);
    border-left-color: var(--primary);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--radius-full);
    transition: color var(--transition-fast) ease-in-out, background-color var(--transition-fast) ease-in-out;
}

.badge-primary {
    color: #fff;
    background-color: var(--primary);
}

.badge-secondary {
    color: #fff;
    background-color: var(--secondary);
}

.badge-success {
    color: #fff;
    background-color: var(--success);
}

.badge-danger {
    color: #fff;
    background-color: var(--danger);
}

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

/* Utilities */
.text-center {
    text-align: center;
}

.d-flex {
    display: flex;
}

.align-items-center {
    align-items: center;
}

.justify-content-between {
    justify-content: space-between;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

/* Status indicator */
.status-indicator {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.status-label {
    font-weight: 600;
    margin-right: 0.5rem;
}

.status-value {
    padding: 0.35em 0.65em;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.875rem;
}

.status-value.active {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.status-value.inactive {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* Footer */
footer {
    padding: 1.5rem 0;
    background-color: var(--bg-card);
    text-align: center;
    margin-top: auto;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Responsive Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -0.75rem;
    margin-left: -0.75rem;
}

.col-md-6 {
    position: relative;
    width: 100%;
    padding-right: 0.75rem;
    padding-left: 0.75rem;
}

/* Responsive Adjustments */
@media (min-width: 768px) {
    .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 767px) {
    header .container {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    nav ul {
        margin-top: 1rem;
        justify-content: center;
        gap: 1rem;
    }
    
    .row {
        margin-right: -0.5rem;
        margin-left: -0.5rem;
    }
    
    .col-md-6 {
        padding-right: 0.5rem;
        padding-left: 0.5rem;
        margin-bottom: 1.5rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .card-header .btn {
        width: 100%;
    }
}

/* Header */
header {
    background-color: var(--bg-card);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--text-main);
}

.header-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.header-logo img {
    max-height: 40px;
    max-width: 180px;
}

header h1, 
header a, 
header .header-logo,
header .header-logo img {
    color: #FFFFFF;
}

header nav ul li a {
    color: #FFFFFF;
}

/* Regras para tema claro - header links */
:root.light-mode header,
html:not(.dark-mode) header {
    background-color: var(--dark);
}

:root.light-mode header h1,
:root.light-mode header a,
:root.light-mode header .header-logo,
:root.light-mode header .header-logo img,
html:not(.dark-mode) header h1,
html:not(.dark-mode) header a,
html:not(.dark-mode) header .header-logo,
html:not(.dark-mode) header .header-logo img {
    color: #FFFFFF;
}

:root.light-mode header nav ul li a,
html:not(.dark-mode) header nav ul li a {
    color: #FFFFFF;
}

:root.light-mode .theme-toggle,
html:not(.dark-mode) .theme-toggle {
    color: #FFFFFF;
}

:root.light-mode .theme-toggle:hover,
html:not(.dark-mode) .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Material Design 3 Components */
.md3-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 1rem;
    margin-bottom: 1rem;
    transition: box-shadow var(--transition-normal);
}

.md3-card:hover {
    box-shadow: var(--shadow-md);
}

.md3-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.md3-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.md3-card-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.md3-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--primary);
    color: white;
    min-height: 40px;
}

.md3-button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.md3-button-outlined {
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.md3-button-outlined:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.md3-button-text {
    background-color: transparent;
    color: var(--primary);
    padding: 0.5rem 1rem;
}

.md3-button-text:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.md3-button-filled {
    background-color: var(--primary);
    color: white;
}

.md3-button-filled:hover {
    background-color: var(--primary-dark);
}

.md3-icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: none;
    background-color: transparent;
    color: var(--text-main);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.md3-icon-button:hover {
    background-color: var(--gray-200);
}

.dark-mode .md3-icon-button:hover {
    background-color: var(--gray-700);
}

.md3-form-field {
    margin-bottom: 1rem;
}

.md3-form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.md3-form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-body);
    color: var(--text-main);
    transition: border-color var(--transition-fast);
}

.md3-form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 350px;
    padding: 12px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    opacity: 0;
    transform: translateX(100%);
    transition: all var(--transition-normal);
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-error {
    background-color: var(--danger);
    color: white;
}

.notification-success {
    background-color: var(--success);
    color: white;
}

.notification-warning {
    background-color: var(--warning);
    color: white;
}

.notification-info {
    background-color: var(--primary);
    color: white;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 8px;
}