:root {
    --color-dark: #0D0D0D;
    --color-dark-medium: #262626;
    --color-medium: #595959;
    --color-light-medium: #A6A6A6;
    --color-light: #F2F2F2;
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-danger: #F44336;
    --color-info: #2196F3;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--color-light);
    background-image: 
        radial-gradient(circle at 1px 1px, var(--color-light-medium) 1px, transparent 0);
    background-size: 20px 20px;
    color: var(--color-dark);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 80px;
}

.app-header {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-medium) 100%);
    color: var(--color-light);
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.header-content h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.header-content p {
    opacity: 0.9;
    font-size: 0.9rem;
}

.app-main {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
}

.section {
    display: none;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
    overflow: hidden;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.section-header {
    background: var(--color-dark-medium);
    color: var(--color-light);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    font-size: 1.2rem;
    font-weight: 500;
}

.section-header i {
    margin-right: 0.5rem;
}

/* Gerador de Senhas */
.generator-container,
.analyzer-container,
.vault-container {
    padding: 1.5rem;
}

.password-display {
    display: flex;
    margin-bottom: 1rem;
    gap: 0.5rem;
}

.password-display input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--color-light-medium);
    border-radius: var(--border-radius);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    background: var(--color-light);
}

.copy-btn {
    padding: 0.75rem;
    background: var(--color-info);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    min-width: 50px;
}

.copy-btn:hover {
    background: #1976D2;
    transform: translateY(-1px);
}

.copy-btn:disabled {
    background: var(--color-light-medium);
    cursor: not-allowed;
    transform: none;
}

.strength-meter {
    margin-bottom: 1.5rem;
}

.strength-bar {
    width: 100%;
    height: 8px;
    background: var(--color-light-medium);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.strength-fill {
    height: 100%;
    transition: var(--transition);
    border-radius: 4px;
}

.strength-text {
    font-size: 0.9rem;
    font-weight: 500;
}

.generator-options {
    margin-bottom: 1.5rem;
}

.option-group {
    margin-bottom: 1rem;
}

.option-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.option-group input[type="range"] {
    width: 100%;
    margin-bottom: 0.5rem;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    position: relative;
    padding-left: 2rem;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 18px;
    width: 18px;
    background-color: var(--color-light);
    border: 2px solid var(--color-light-medium);
    border-radius: 3px;
    transition: var(--transition);
}

.checkbox-label input:checked ~ .checkmark {
    background-color: var(--color-info);
    border-color: var(--color-info);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label input:checked ~ .checkmark:after {
    display: block;
}

.action-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    text-align: center;
    justify-content: center;
    min-height: 44px;
}

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

.btn-primary:hover:not(:disabled) {
    background: #1976D2;
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--color-dark-medium);
    transform: translateY(-1px);
}

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

.btn-warning:hover:not(:disabled) {
    background: #F57C00;
    transform: translateY(-1px);
}

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

.btn-danger:hover:not(:disabled) {
    background: #D32F2F;
    transform: translateY(-1px);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn:disabled {
    background: var(--color-light-medium);
    color: var(--color-medium);
    cursor: not-allowed;
    transform: none;
}

/* Análise de Força */
.password-input-group {
    position: relative;
    margin-bottom: 1rem;
}

.password-input-group input {
    width: 100%;
    padding: 0.75rem;
    padding-right: 3rem;
    border: 2px solid var(--color-light-medium);
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.visibility-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--color-medium);
    transition: var(--transition);
}

.visibility-btn:hover {
    color: var(--color-dark);
}

.analysis-feedback {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--color-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-info);
}

.feedback-item {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.feedback-item.positive {
    color: var(--color-success);
}

.feedback-item.negative {
    color: var(--color-danger);
}

.breach-check {
    margin-top: 1.5rem;
}

.breach-result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
}

.breach-result.safe {
    background: #E8F5E8;
    color: var(--color-success);
    border-left: 4px solid var(--color-success);
}

.breach-result.danger {
    background: #FFEBEE;
    color: var(--color-danger);
    border-left: 4px solid var(--color-danger);
}

/* Cofre */
.vault-list {
    min-height: 200px;
}

.empty-vault {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-medium);
}

.empty-vault i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.vault-item {
    background: var(--color-light);
    border: 1px solid #E0E0E0;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.vault-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.vault-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.vault-item-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-dark);
}

.vault-item-actions {
    display: flex;
    gap: 0.25rem;
}

.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
    font-size: 0.9rem;
}

.action-btn:hover {
    background: var(--color-light-medium);
}

.action-btn.copy {
    color: var(--color-info);
}

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

.vault-item-info {
    font-size: 0.85rem;
    color: var(--color-medium);
    margin-bottom: 0.25rem;
}

.vault-item-password {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    background: white;
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid #E0E0E0;
    margin: 0.5rem 0;
    word-break: break-all;
}

.vault-item-notes {
    font-size: 0.8rem;
    color: var(--color-medium);
    font-style: italic;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--color-dark-medium);
    color: var(--color-light);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-light);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-light-medium);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-info);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* FAQ */
.faq-container {
    padding: 0;
}

.faq-item {
    border-bottom: 1px solid #E0E0E0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--color-light);
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1rem;
    color: var(--color-medium);
    line-height: 1.6;
    animation: slideDown 0.3s ease;
}

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

/* Navegação inferior */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #E0E0E0;
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    z-index: 100;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--color-medium);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

.nav-item:hover,
.nav-item.active {
    color: var(--color-info);
    background: rgba(33, 150, 243, 0.1);
}

/* Footer */
footer {
    text-align: center;
    padding: 1rem;
    color: var(--color-medium);
    font-size: 0.8rem;
    background: var(--color-light);
    border-top: 1px solid #E0E0E0;
    margin-top: 2rem;
}

/* Animações de força */
.strength-very-weak { background: var(--color-danger); }
.strength-weak { background: #FF7043; }
.strength-fair { background: var(--color-warning); }
.strength-good { background: #8BC34A; }
.strength-strong { background: var(--color-success); }

/* Responsividade */
@media (max-width: 480px) {
    .app-main {
        padding: 0.5rem;
    }
    
    .generator-container,
    .analyzer-container,
    .vault-container {
        padding: 1rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .vault-item-actions {
        flex-direction: column;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .nav-item span {
        font-size: 0.6rem;
    }
}

@media (min-width: 768px) {
    .app-main {
        padding: 2rem;
    }
    
    .header-content h1 {
        font-size: 2.2rem;
    }
    
    .section-header h2 {
        font-size: 1.4rem;
    }
    
    .bottom-nav {
        max-width: 600px;
        left: 50%;
        transform: translateX(-50%);
        border-radius: var(--border-radius) var(--border-radius) 0 0;
    }
}

/* Estados especiais */
.copying {
    animation: pulse 0.6s ease-in-out;
}

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

.saving {
    animation: lockSecure 0.8s ease-in-out;
}

@keyframes lockSecure {
    0% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.1) rotate(-5deg); }
    50% { transform: scale(1.1) rotate(5deg); }
    75% { transform: scale(1.1) rotate(-2deg); }
    100% { transform: scale(1) rotate(0deg); }
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--color-success);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    z-index: 1001;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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