/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px 30px;
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.header h1 {
    color: #4a5568;
    font-size: 1.8rem;
    font-weight: 600;
}

.header h1 i {
    color: #667eea;
    margin-right: 10px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    color: #4a5568;
    font-weight: 500;
}

.logout-btn {
    background: #e53e3e;
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: #c53030;
    transform: translateY(-2px);
}

/* Conteúdo principal */
.main-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Barra de ações */
.actions-bar {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

/* Botões */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.btn-secondary {
    background: #e2e8f0;
    color: #4a5568;
}

.btn-secondary:hover {
    background: #cbd5e0;
    transform: translateY(-2px);
}

.btn-danger {
    background: #e53e3e;
    color: white;
}

.btn-danger:hover {
    background: #c53030;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Container de contas */
.accounts-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* Card de conta */
.account-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.account-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.account-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.account-info h3 {
    color: #2d3748;
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.account-info .issuer {
    color: #718096;
    font-size: 0.9rem;
}

.delete-btn {
    background: none;
    border: none;
    color: #e53e3e;
    cursor: pointer;
    padding: 5px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.delete-btn:hover {
    background: #fed7d7;
}

/* Código TOTP */
.totp-code {
    text-align: center;
    margin-bottom: 20px;
}

.totp-code .code {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    font-family: 'Courier New', monospace;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

.totp-code .time {
    color: #718096;
    font-size: 0.9rem;
}

/* Barra de progresso */
.progress-container {
    margin-bottom: 15px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #48bb78, #38a169);
    border-radius: 3px;
    transition: width 1s linear;
}

.progress-fill.warning {
    background: linear-gradient(90deg, #ed8936, #dd6b20);
}

.progress-fill.danger {
    background: linear-gradient(90deg, #e53e3e, #c53030);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    color: #2d3748;
    font-size: 1.3rem;
}

.close {
    color: #a0aec0;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #2d3748;
}

.modal-body {
    padding: 30px;
}

/* Abas */
.tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 2px solid #e2e8f0;
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 24px;
    cursor: pointer;
    color: #718096;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* QR Scanner */
.qr-container {
    position: relative;
    width: 100%;
    height: 300px;
    background: #f7fafc;
    border-radius: 10px;
    margin-bottom: 20px;
    overflow: hidden;
}

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

.qr-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-frame {
    width: 200px;
    height: 200px;
    border: 3px solid #667eea;
    border-radius: 10px;
    position: relative;
}

.qr-frame::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    width: 30px;
    height: 30px;
    border-top: 3px solid #667eea;
    border-left: 3px solid #667eea;
    border-top-left-radius: 10px;
}

.qr-frame::after {
    content: '';
    position: absolute;
    bottom: -3px;
    right: -3px;
    width: 30px;
    height: 30px;
    border-bottom: 3px solid #667eea;
    border-right: 3px solid #667eea;
    border-bottom-right-radius: 10px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #2d3748;
    font-weight: 500;
}

.form-group label i {
    margin-right: 8px;
    color: #667eea;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

/* Alertas */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-error {
    background: #fed7d7;
    color: #c53030;
    border: 1px solid #feb2b2;
}

.alert-success {
    background: #c6f6d5;
    color: #2f855a;
    border: 1px solid #9ae6b4;
}

/* Página de autenticação */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: #2d3748;
    font-size: 2rem;
    margin-bottom: 10px;
}

.auth-header p {
    color: #718096;
    font-size: 1rem;
}

.auth-tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 2px solid #e2e8f0;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

/* Estados de carregamento */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .actions-bar {
        justify-content: center;
    }
    
    .accounts-container {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .auth-box {
        padding: 30px 20px;
    }
    
    .totp-code .code {
        font-size: 2rem;
        letter-spacing: 2px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5rem;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .account-card {
        padding: 20px;
    }
    
    .totp-code .code {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }
}