* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #141b2d;
    --bg-tertiary: #1f2937;
    --bg-hover: #2d3748;
    --text-primary: #f7fafc;
    --text-secondary: #cbd5e0;
    --text-muted: #a0aec0;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-hover: #7c3aed;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --warning: #f59e0b;
    --border-color: #374151;
    --shadow-sm: rgba(0, 0, 0, 0.2);
    --shadow-md: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.5);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.1) 0px, transparent 50%);
}

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

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 25px 30px;
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-md);
    border: 1px solid var(--border-color);
}

.header h1 {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

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

.mes-input {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mes-input:hover {
    border-color: var(--accent-primary);
}

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

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-icon {
    font-size: 1.2rem;
    line-height: 1;
}

/* Cards de Resumo */
.resumo-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 4px 20px var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-lg);
}

.resumo-card {
    display: flex;
    align-items: center;
    gap: 20px;
}

.card-icon {
    font-size: 3rem;
    filter: drop-shadow(0 4px 8px var(--shadow-sm));
}

.card-content h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.card-content .valor {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.resumo-card.receita .valor {
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.resumo-card.despesa .valor {
    background: var(--gradient-danger);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.resumo-card.saldo .valor {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.resumo-card.saldo.negativo .valor {
    background: var(--gradient-danger);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Filtros */
.filtros {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.filtro-btn {
    padding: 10px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
}

.filtro-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.filtro-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Container de Transações */
.transacoes-container {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px var(--shadow-md);
    border: 1px solid var(--border-color);
}

.transacoes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.transacoes-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.transacoes-stats {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.lista-transacoes {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Item de Transação */
.transacao-item {
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.transacao-item:hover {
    background: var(--bg-hover);
    transform: translateX(5px);
    box-shadow: 0 4px 12px var(--shadow-md);
}

.transacao-item.receita {
    border-left-color: var(--success);
}

.transacao-item.despesa {
    border-left-color: var(--danger);
}

.transacao-info {
    flex: 1;
}

.transacao-descricao {
    font-weight: 600;
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.transacao-detalhes {
    display: flex;
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.categoria-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-primary);
}

.transacao-valor {
    font-size: 1.4rem;
    font-weight: 700;
    margin-right: 20px;
}

.transacao-item.receita .transacao-valor {
    color: var(--success);
}

.transacao-item.despesa .transacao-valor {
    color: var(--danger);
}

.transacao-acoes {
    display: flex;
    gap: 8px;
}

.btn-icon-action {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon-action:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--accent-primary);
    transform: scale(1.1);
}

.btn-icon-action.delete:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    color: var(--danger);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
    overflow-y: auto;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    width: 100%;
    max-width: 550px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: slideUp 0.3s ease;
}

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

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

.close-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

/* Form */
form {
    padding: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

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

.empty-state p {
    font-size: 1rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 6px;
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* Responsividade */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    .header {
        flex-direction: column;
        gap: 20px;
        align-items: stretch;
        padding: 20px;
    }

    .header h1 {
        font-size: 1.5rem;
        text-align: center;
    }

    .header-controls {
        flex-direction: column;
    }

    .mes-input,
    .btn {
        width: 100%;
        justify-content: center;
    }

    .resumo-cards {
        grid-template-columns: 1fr;
    }

    .transacoes-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .transacao-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .transacao-valor {
        margin-right: 0;
        margin-bottom: 10px;
    }

    .transacao-acoes {
        width: 100%;
        justify-content: flex-end;
    }

    .modal-content {
        margin: 10px;
        max-height: 95vh;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .card-content .valor {
        font-size: 1.5rem;
    }

    .card-icon {
        font-size: 2.5rem;
    }
}