:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --success: #4cc9f0;
    --danger: #f72585;
    --dark: #212529;
    --light: #f8f9fa;
    --gray: #6c757d;
    --border-radius: 12px;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--dark);
    min-height: 100vh;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 30px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.app-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }
}

.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 25px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title i {
    font-size: 1.3rem;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
}

.input-group {
    display: flex;
    gap: 10px;
}

input, select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.checkbox-group input {
    width: auto;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: #5a08a0;
}

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

.btn-success:hover {
    background: #3ab3d6;
}

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

.btn-danger:hover {
    background: #e11d74;
}

.btn-block {
    width: 100%;
}

.accounts-list {
    max-height: 400px;
    overflow-y: auto;
    margin-top: 20px;
}

.account-item {
    padding: 15px;
    border-radius: var(--border-radius);
    background: #f8f9fa;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid var(--primary);
}

.account-info {
    flex: 1;
}

.account-username {
    font-weight: 600;
    margin-bottom: 5px;
}

.account-password {
    font-family: monospace;
    color: var(--gray);
    font-size: 0.9rem;
}

.account-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--gray);
    transition: var(--transition);
}

.action-btn:hover {
    color: var(--primary);
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 15px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
    margin-top: 5px;
}

.export-options {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.password-strength {
    height: 6px;
    border-radius: 3px;
    margin-top: 8px;
    background: #e2e8f0;
    overflow: hidden;
}

.strength-meter {
    height: 100%;
    width: 0%;
    transition: var(--transition);
}

.strength-weak {
    background: var(--danger);
    width: 25%;
}

.strength-medium {
    background: #ffb74d;
    width: 50%;
}

.strength-strong {
    background: #4caf50;
    width: 75%;
}

.strength-very-strong {
    background: #2e7d32;
    width: 100%;
}

footer {
    text-align: center;
    color: white;
    padding: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateX(150%);
    transition: transform 0.3s ease;
    z-index: 1000;
}

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

.notification.success {
    border-left: 4px solid #4caf50;
}

.notification.error {
    border-left: 4px solid var(--danger);
}

.notification i {
    font-size: 1.2rem;
}

.notification.success i {
    color: #4caf50;
}

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