:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-primary: #00ff9d;
    --accent-secondary: #00b8ff;
    --accent-warning: #ffaa00;
    --accent-danger: #ff4444;
    --border-color: #2a2a3a;
    --shadow-glow: 0 0 20px rgba(0, 255, 157, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: var(--accent-primary);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--accent-secondary);
    text-shadow: 0 0 10px var(--accent-primary);
}

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

header {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo::before {
    content: '<';
    color: var(--accent-secondary);
}

.logo::after {
    content: '/>';
    color: var(--accent-secondary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-primary);
}

.hero {
    text-align: center;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 255, 157, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 184, 255, 0.05) 0%, transparent 50%);
    z-index: -1;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 5px rgba(0, 255, 157, 0.3)); }
    to { filter: drop-shadow(0 0 20px rgba(0, 255, 157, 0.6)); }
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-box {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.search-box button {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.8rem 1.5rem;
    background: var(--accent-primary);
    border: none;
    border-radius: 50px;
    color: var(--bg-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-box button:hover {
    background: var(--accent-secondary);
    box-shadow: 0 0 20px rgba(0, 184, 255, 0.4);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
}

.tool-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.tool-card h3 {
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.tool-card .btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    border-radius: 5px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.tool-card .btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.page-header {
    text-align: center;
    padding: 3rem 0;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--text-secondary);
}

.tool-form {
    max-width: 700px;
    margin: 0 auto 2rem;
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(0, 255, 157, 0.1);
}

.form-group input::placeholder {
    color: var(--text-secondary);
}

.btn-primary {
    padding: 1rem 2rem;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: 8px;
    color: var(--bg-primary);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 157, 0.3);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.result-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    margin-top: 2rem;
    display: none;
}

.result-section.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-header h3 {
    color: var(--accent-primary);
}

.status-badge {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-success {
    background: rgba(0, 255, 157, 0.2);
    color: var(--accent-primary);
}

.status-error {
    background: rgba(255, 68, 68, 0.2);
    color: var(--accent-danger);
}

.status-warning {
    background: rgba(255, 170, 0, 0.2);
    color: var(--accent-warning);
}

.result-content {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

.result-content table {
    width: 100%;
    border-collapse: collapse;
}

.result-content th,
.result-content td {
    padding: 0.8rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.result-content th {
    color: var(--accent-secondary);
    font-weight: 600;
    width: 200px;
}

.result-content tr:last-child td {
    border-bottom: none;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.about-content,
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.about-content h2,
.contact-content h2 {
    color: var(--accent-primary);
    margin: 2rem 0 1rem;
}

.about-content p,
.contact-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.contact-form {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}

footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

footer p {
    color: var(--text-secondary);
}

footer .social-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

footer .social-links a {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 5px;
    color: var(--text-secondary);
}

footer .social-links a:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.breadcrumb {
    padding: 1rem 0;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
}

.breadcrumb span {
    margin: 0 0.5rem;
}

.info-box {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent-primary);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0 8px 8px 0;
}

.info-box.warning {
    border-left-color: var(--accent-warning);
}

.info-box.error {
    border-left-color: var(--accent-danger);
}

.json-output {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-all;
}

.port-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.port-item {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 5px;
    font-size: 0.9rem;
}

.port-item.open {
    background: rgba(0, 255, 157, 0.2);
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.port-item.closed {
    background: rgba(255, 68, 68, 0.2);
    color: var(--accent-danger);
}

.domain-result {
    display: grid;
    gap: 1rem;
}

.domain-result .result-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
}

.domain-result .result-item h4 {
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
}

.domain-result .result-item p {
    color: var(--text-primary);
    font-family: monospace;
    word-break: break-all;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .nav-links {
        display: none;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .tool-form {
        padding: 1rem;
    }

    .result-content th {
        width: 120px;
    }
}