/* Reset e Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --success: #10b981;
    --success-dark: #059669;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --warning: #f59e0b;
    
    /* Neutrals */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-900);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--gray-200);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-icon {
    font-size: 2rem;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

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

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-success:hover {
    background: var(--success-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-danger:hover {
    background: var(--danger-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Main */
.main {
    padding: var(--spacing-2xl) 0;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.hero-content {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* Input Section */
.input-section {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    margin: 0 auto;
}

/* Input Mode Toggle */
.input-mode-toggle {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    background: var(--gray-100);
    padding: var(--spacing-xs);
    border-radius: var(--radius-lg);
}

.mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}

.mode-btn:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.mode-btn.active {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.mode-btn .icon {
    font-size: 1.25rem;
}

/* Input Modes */
.input-mode {
    animation: fadeIn 0.3s ease-out;
}

/* QR Scanner */
.scanner-container {
    text-align: center;
}

.scanner-header {
    margin-bottom: var(--spacing-lg);
}

.scanner-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.scanner-header p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.qr-reader {
    margin: var(--spacing-lg) auto;
    max-width: 500px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--gray-900);
    min-height: 400px; /* Aumentado para melhor visualização */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.qr-reader video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Overlay de ajuda no scanner */
.qr-reader::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border: 3px dashed rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    pointer-events: none;
    animation: scannerPulse 2s ease-in-out infinite;
}

@keyframes scannerPulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.scanner-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.scanner-controls .btn.active {
    background: var(--warning);
    border-color: var(--warning);
    color: white;
}

.scanner-controls .btn.active:hover {
    background: #e6a800;
    border-color: #e6a800;
}

.scan-result {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 2px solid var(--success);
    animation: slideIn 0.3s ease-out;
}

.result-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.scan-result p {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.scan-result small {
    display: block;
    color: var(--gray-600);
    font-size: 0.75rem;
    word-break: break-all;
}

.nfce-form {
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.form-input {
    flex: 1;
    min-width: 250px;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-help {
    display: block;
    margin-top: var(--spacing-sm);
    color: var(--gray-600);
    font-size: 0.8125rem;
}

/* Alerts */
#alertContainer {
    margin-top: var(--spacing-lg);
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: #d1fae5;
    border: 1px solid var(--success);
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid var(--danger);
    color: #991b1b;
}

.alert-icon {
    font-size: 1.25rem;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.alert-close:hover {
    opacity: 1;
}

/* Info Card */
.info-card {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.info-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.info-list {
    list-style-position: inside;
    color: var(--gray-700);
    line-height: 1.8;
}

.info-list li {
    margin-bottom: var(--spacing-xs);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-400);
    transition: color 0.2s;
    padding: var(--spacing-xs);
    line-height: 1;
}

.modal-close:hover {
    color: var(--gray-600);
}

.modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    flex: 1;
}

/* Table */
.table-container {
    position: relative;
    min-height: 200px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table thead {
    background: var(--gray-50);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-300);
}

.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-800);
}

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

/* Loading & Empty States */
.loading-state,
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.25rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.empty-state p {
    color: var(--gray-500);
}

/* Spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-state .spinner {
    border-color: var(--gray-300);
    border-top-color: var(--primary);
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
}

/* Button Loading State */
.btn-loading {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-loading .spinner {
    width: 16px;
    height: 16px;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-text {
    text-align: center;
    color: white;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .input-wrapper {
        flex-direction: column;
    }
    
    .form-input {
        min-width: 100%;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .nav {
        width: 100%;
        justify-content: center;
    }
    
    .modal-content {
        max-height: 95vh;
        margin: var(--spacing-md);
    }
    
    .modal-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .modal-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .data-table {
        font-size: 0.75rem;
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Animação de pulse para feedback visual */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn-outline {
        border-width: 3px;
    }
    
    .form-input {
        border-width: 3px;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .input-section {
        display: none;
    }
    
    .modal {
        position: static;
    }
    
    .modal-overlay {
        display: none;
    }
    
    .data-table {
        box-shadow: none;
    }
}