/* Reset e Variáveis CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores Light Mode */
    --primary-color: #667eea;
    --primary-dark: #5a6fd8;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    /* Cores Dark Mode */
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-card: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --border-color: #4b5563;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 2px solid var(--border-color);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header h1 i {
    margin-right: 15px;
    color: var(--primary-color);
}

.header-controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Botões */
.btn-primary, .btn-secondary, .btn-theme, .btn-close {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow);
}

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-theme {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 12px;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    justify-content: center;
}

.btn-close {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    justify-content: center;
}

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

/* Seção de Busca */
.search-section {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.search-container {
    flex: 1;
    position: relative;
    min-width: 300px;
}

.search-container i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-container input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition);
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

.filter-container input {
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 14px;
}

/* Grid de Tarefas */
.tasks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.task-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.task-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.task-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.task-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
}

.task-date {
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.task-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.task-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.btn-edit, .btn-delete {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

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

.btn-edit:hover {
    background: #2563eb;
    transform: scale(1.05);
}

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

.btn-delete:hover {
    background: #dc2626;
    transform: scale(1.05);
}

/* Estado Vazio */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
    position: relative;
    margin: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    color: var(--text-primary);
}

/* Formulário */
.form-group {
    margin-bottom: 20px;
    padding: 0 25px;
}

.form-group:first-of-type {
    padding-top: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    padding: 25px;
    border-top: 1px solid var(--border-color);
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 600;
    z-index: 1001;
    transform: translateX(400px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.toast.show {
    transform: translateX(0);
}

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

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

.toast.info {
    background: var(--info-color);
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.loading {
    animation: pulse 1.5s infinite;
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .search-section {
        flex-direction: column;
    }
    
    .search-container {
        min-width: auto;
    }
    
    .filter-container {
        justify-content: center;
    }
    
    .tasks-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .task-header {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .task-date {
        align-self: flex-start;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .toast {
        right: 15px;
        left: 15px;
        transform: translateY(-100px);
    }
    
    .toast.show {
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.75rem;
    }
    
    .task-card {
        padding: 20px;
    }
    
    .modal-header,
    .form-group,
    .form-actions {
        padding-left: 20px;
        padding-right: 20px;
    }
}

/* Melhorias de Acessibilidade */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus para navegação por teclado */
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Adicionar ao final do arquivo style.css */

/* Estilos para informações do usuário e logout */
.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-right: 15px;
}

.welcome-text {
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    background: var(--danger-color, #e74c3c);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-logout:hover {
    background: #c0392b;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
}

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

/* Responsividade para dispositivos móveis */
@media (max-width: 768px) {
    .header-controls {
        flex-direction: column;
        gap: 10px;
    }
    
    .user-info {
        order: -1;
        justify-content: center;
        margin-right: 0;
    }
    
    .welcome-text {
        font-size: 0.8rem;
    }
    
    .btn-logout {
        font-size: 0.8rem;
        padding: 6px 10px;
    }
}

/* Estilos para Autenticação - Layout Moderno e Responsivo */
.auth-body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    position: relative;
    overflow: hidden;
}

.auth-body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    pointer-events: none;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    margin: 20px;
    position: relative;
    z-index: 1;
}

.auth-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: slideUp 0.6s ease-out;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0%, 100% {
        background-position: 200% 0;
    }
    50% {
        background-position: -200% 0;
    }
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header i {
    font-size: 3rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    display: block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.auth-header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #1f2937, #4b5563);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-header p {
    color: #6b7280;
    font-size: 1rem;
    font-weight: 400;
}

.auth-form {
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group label i {
    color: #667eea;
    font-size: 1rem;
}

.form-group input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #ffffff;
    color: #1f2937;
    position: relative;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.form-group input:hover {
    border-color: #d1d5db;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

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

.btn-full {
    width: 100%;
}

.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 24px;
    font-weight: 500;
    animation: slideDown 0.4s ease-out;
}

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

.alert-error {
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: linear-gradient(135deg, #f0fdf4, #dcfce7);
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.alert i {
    font-size: 1.1rem;
}

.auth-footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #e5e7eb;
}

.auth-footer p {
    color: #6b7280;
    font-size: 0.95rem;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
}

.auth-footer a:hover {
    color: #5a6fd8;
}

.auth-footer a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: width 0.3s ease;
}

.auth-footer a:hover::after {
    width: 100%;
}

/* Responsividade */
@media (max-width: 480px) {
    .auth-container {
        margin: 10px;
        max-width: none;
    }
    
    .auth-card {
        padding: 24px;
        border-radius: 16px;
    }
    
    .auth-header h1 {
        font-size: 1.875rem;
    }
    
    .auth-header i {
        font-size: 2.5rem;
    }
    
    .form-group input {
        padding: 14px 16px;
    }
    
    .btn {
        padding: 14px 20px;
    }
}

@media (max-width: 360px) {
    .auth-card {
        padding: 20px;
    }
    
    .auth-header h1 {
        font-size: 1.625rem;
    }
}

/* Animações de loading para botões */
.btn-primary.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-primary.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Melhorias de acessibilidade */
@media (prefers-reduced-motion: reduce) {
    .auth-card,
    .alert,
    .btn,
    .form-group input,
    .auth-header i {
        animation: none;
        transition: none;
    }
}

/* Focus para navegação por teclado */
.form-group input:focus,
.btn:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .toast {
        right: 15px;
        left: 15px;
        transform: translateY(-100px);
    }
    
    .toast.show {
        transform: translateY(0);
    }
}