/* ============================================================
   NetLynx - Global Styles
   Dark theme, modern IT/cyber aesthetic
   ============================================================ */

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2234;
    --bg-card-hover: #1f2a40;
    --bg-input: #0f1724;
    --border-color: #2a3654;
    --border-glow: #3b82f6;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.3);
    --green: #10b981;
    --green-glow: rgba(16, 185, 129, 0.3);
    --red: #ef4444;
    --red-glow: rgba(239, 68, 68, 0.3);
    --yellow: #f59e0b;
    --purple: #8b5cf6;
    --cyan: #06b6d4;
    --gradient-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-green: linear-gradient(135deg, #10b981, #06b6d4);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover {
    color: var(--accent-hover);
}

/* ============================================================
   Navigation
   ============================================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo svg {
    width: 36px;
    height: 36px;
}

.nav-logo span.accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}

.nav-links li a {
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
}
.nav-links li a:hover {
    color: var(--text-primary);
    background: rgba(59, 130, 246, 0.1);
}

.nav-dropdown {
    position: relative;
}
.nav-dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    transform: translateY(0);
}
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem;
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.2s;
}
.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.6rem 1rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}
.dropdown-menu a:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}
.dropdown-menu .tool-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.nav-cta {
    background: var(--gradient-primary) !important;
    color: white !important;
    padding: 0.5rem 1.5rem !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
}
.nav-cta:hover {
    opacity: 0.9;
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Mobile nav */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 900px) {
    .nav-toggle { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 1rem;
    }
    .nav-links.active { display: flex; }
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: var(--bg-primary);
        margin-top: 0.5rem;
    }
}

/* ============================================================
   Hero Section
   ============================================================ */

.hero {
    padding: 140px 2rem 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero h1 .gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    font-family: var(--font-main);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
    color: var(--text-primary);
}

.btn-green {
    background: var(--gradient-green);
    color: white;
    box-shadow: 0 4px 15px var(--green-glow);
}
.btn-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--green-glow);
    color: white;
}

/* ============================================================
   Section Containers
   ============================================================ */

.section {
    padding: 80px 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================================
   Cards
   ============================================================ */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all 0.3s;
}
.card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.1);
    transform: translateY(-4px);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ============================================================
   Tool Pages
   ============================================================ */

.tool-page {
    padding: 100px 2rem 60px;
    max-width: 900px;
    margin: 0 auto;
}

.tool-page h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tool-page .subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.tool-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
}

.tool-result {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    white-space: pre-wrap;
    word-break: break-all;
}

.ip-display {
    font-size: 3rem;
    font-weight: 800;
    font-family: var(--font-mono);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    padding: 2rem 0;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}
.result-row:last-child {
    border-bottom: none;
}
.result-row .label {
    color: var(--text-muted);
    font-family: var(--font-main);
    font-size: 0.9rem;
}
.result-row .value {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

/* ============================================================
   Forms & Inputs
   ============================================================ */

.input-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.input-group input, .input-group select {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-main);
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus, .input-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.input-group select {
    flex: 0 0 auto;
    width: auto;
    min-width: 120px;
    cursor: pointer;
}

select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

textarea {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-mono);
    outline: none;
    resize: vertical;
    min-height: 200px;
}

/* ============================================================
   Status Badges
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-open {
    background: rgba(16, 185, 129, 0.15);
    color: var(--green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-closed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-valid {
    background: rgba(16, 185, 129, 0.15);
    color: var(--green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-expired {
    background: rgba(239, 68, 68, 0.15);
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ============================================================
   Features Grid (Landing Page)
   ============================================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 900px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .features-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.5rem; }
    .input-group { flex-direction: column; }
}

/* ============================================================
   Stats Bar
   ============================================================ */

.stats-bar {
    display: flex;
    justify-content: center;
    gap: 4rem;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin: 0 auto;
    max-width: 900px;
}

.stat {
    text-align: center;
}

.stat .number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat .label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* ============================================================
   Footer
   ============================================================ */

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
    max-width: 300px;
}

.footer h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.footer ul {
    list-style: none;
}
.footer ul li {
    margin-bottom: 0.5rem;
}
.footer ul li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.footer ul li a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   Loading spinner
   ============================================================ */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================================
   Password Strength Meter
   ============================================================ */

.strength-meter {
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    margin-top: 1rem;
    overflow: hidden;
}
.strength-meter .fill {
    height: 100%;
    border-radius: 3px;
    transition: all 0.3s;
}

/* ============================================================
   Blog
   ============================================================ */

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}

.blog-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    background: var(--bg-input);
}

.blog-card .meta {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.blog-card h3 {
    margin-bottom: 0.5rem;
}

.blog-card h3 a {
    color: var(--text-primary);
}
.blog-card h3 a:hover {
    color: var(--accent);
}

/* ============================================================
   Table
   ============================================================ */

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

.data-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.data-table tr:hover td {
    background: rgba(59, 130, 246, 0.05);
}

/* ============================================================
   Pricing
   ============================================================ */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 0 40px var(--accent-glow);
}

.pricing-card .badge-popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 800;
    margin: 1rem 0;
}

.pricing-card .price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.pricing-card ul {
    list-style: none;
    text-align: left;
    margin: 1.5rem 0;
}

.pricing-card ul li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.pricing-card ul li::before {
    content: '✓';
    color: var(--green);
    font-weight: bold;
    margin-right: 8px;
}

/* ============================================================
   Animations
   ============================================================ */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Glowing border animation for featured elements */
@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
    50% { box-shadow: 0 0 40px var(--accent-glow); }
}

.glow-pulse {
    animation: glow-pulse 3s ease-in-out infinite;
}

/* Copy button */
.copy-btn {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}
.copy-btn:hover {
    background: rgba(59, 130, 246, 0.2);
}