* {
    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;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    max-width: 700px;
    width: 100%;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    font-size: 48px;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    font-size: 18px;
    margin-bottom: 5px;
}

.version {
    color: #999;
    font-size: 14px;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 10px;
    color: #333;
    font-weight: 600;
    font-size: 16px;
}

input[type="text"] {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s;
}

input[type="text"]:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

button, .btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

button:hover, .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

button:active, .btn:active {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.note {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: 12px;
    padding: 20px;
    margin-top: 30px;
    color: #856404;
    font-size: 14px;
    line-height: 1.6;
}

.note strong {
    display: block;
    margin-bottom: 8px;
    font-size: 16px;
}

.info {
    background: #d1ecf1;
    border-left: 4px solid #17a2b8;
    border-radius: 12px;
    padding: 20px;
    margin-top: 20px;
    color: #0c5460;
    font-size: 14px;
    line-height: 1.6;
}

.author {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    color: #999;
    font-size: 13px;
}

.author a {
    color: #667eea;
    text-decoration: none;
}

.author a:hover {
    text-decoration: underline;
}

.loading {
    display: none;
    text-align: center;
    padding: 20px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Results Page Styles */
.results-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.results-header {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.target-url {
    font-size: 20px;
    color: #333;
    margin-top: 10px;
}

.result-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 24px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #667eea;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.info-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.info-label {
    font-size: 13px;
    color: #666;
    margin-bottom: 5px;
    font-weight: 600;
}

.info-value {
    font-size: 16px;
    color: #333;
    font-weight: bold;
    word-break: break-all;
}

.ip-highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8px 15px;
    border-radius: 8px;
    display: inline-block;
    font-size: 18px;
    margin-top: 5px;
}

.error-card {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.error-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.error-title {
    font-size: 24px;
    color: #856404;
    margin-bottom: 15px;
    font-weight: bold;
}

.error-message {
    color: #856404;
    font-size: 16px;
    line-height: 1.6;
}

.btn-back {
    display: inline-block;
    margin-top: 30px;
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    width: auto;
}

.btn-back:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.cloudflare-section {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.real-ip-section {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.cloudflare-section .info-label,
.real-ip-section .info-label {
    color: rgba(255, 255, 255, 0.9);
}

.cloudflare-section .info-value,
.real-ip-section .info-value {
    color: white;
}

.text-center {
    text-align: center;
}

.mt-30 {
    margin-top: 30px;
}