:root {
    --primary-color: #2196F3;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.checker-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input {
    flex: 1;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus {
    border-color: var(--primary-color);
    outline: none;
}

button {
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: transform 0.2s, background-color 0.2s;
}

button:hover {
    transform: translateY(-2px);
    background-color: #1976D2;
}

.result-box {
    min-height: 60px;
    margin: 20px 0;
    padding: 20px;
    border-radius: 5px;
    text-align: center;
    display: none;
}

.secure {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning-color);
}

.danger {
    background-color: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
}

.loader {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
    display: none;
}

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

.info-section {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 2px solid #eee;
}

.info-section h2 {
    color: var(--primary-color);
    margin-top: 30px;
}

.info-section ul, .info-section ol {
    line-height: 1.6;
}

.code-example {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    padding: 12px;
    margin: 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-example code {
    font-family: 'Courier New', Courier, monospace;
    color: #1a73e8;
}

.copy-btn {
    padding: 6px 12px;
    font-size: 14px;
    background-color: #e9ecef;
    color: #495057;
}

.copy-btn:hover {
    background-color: #dee2e6;
    transform: translateY(-1px);
}

.example-explanation {
    font-size: 0.9em;
    color: #666;
    margin: 8px 0;
}

.example-output {
    background-color: #f8f9fa;
    padding: 12px;
    border-left: 4px solid var(--primary-color);
    margin: 10px 0;
}

.example-output code {
    display: block;
    margin-top: 8px;
    font-family: 'Courier New', Courier, monospace;
    color: #1a73e8;
    word-break: break-all;
}

.note-box {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: 4px;
    padding: 15px;
    margin-top: 20px;
}

.note-box h4 {
    color: #856404;
    margin: 0 0 10px 0;
}

.note-box p {
    color: #856404;
    margin: 0;
}

input.invalid {
    border-color: var(--danger-color);
    background-color: rgba(244, 67, 54, 0.05);
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    transform: none;
}

button:disabled:hover {
    background-color: #cccccc;
    transform: none;
}

.main-result {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 15px;
}

.details-list {
    margin-top: 15px;
    font-size: 0.9em;
    text-align: center;
    display: block;
    color: inherit;
    opacity: 0.9;
}