/* ============================================================
   NetRoute Pro — Landing Page
   Aesthetic: NOC Dashboard / Industrial Terminal
   ============================================================ */

:root {
    --bg:         #0e1117;
    --bg-card:    #161b22;
    --bg-surface: #1c2128;
    --border:     #30363d;
    --border-lit: #484f58;

    --text:       #e6edf3;
    --text-dim:   #8b949e;
    --text-muted: #484f58;

    --accent:     #1a73e8;
    --accent-dim: rgba(26, 115, 232, 0.15);
    --cyan:       #39d5ff;
    --green:      #3fb950;
    --orange:     #f0883e;
    --purple:     #a371f7;
    --red:        #f85149;
    --yellow:     #d29922;

    --font-mono:  'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-body:  'Space Grotesk', -apple-system, sans-serif;

    --max-w:      1200px;
    --section-py: 120px;
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--cyan); }
code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--accent-dim);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--cyan);
}
img { max-width: 100%; display: block; }

/* ---- GRID BACKGROUND ---- */
.grid-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.08;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 20%, transparent 70%);
}

.grid-node {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    animation: nodePulse 4s ease-in-out infinite;
}
.node-1 { top: 15%; left: 20%; animation-delay: 0s; }
.node-2 { top: 25%; left: 60%; animation-delay: 0.7s; }
.node-3 { top: 45%; left: 35%; animation-delay: 1.4s; }
.node-4 { top: 10%; left: 80%; animation-delay: 2.1s; }
.node-5 { top: 55%; left: 75%; animation-delay: 2.8s; }
.node-6 { top: 35%; left: 10%; animation-delay: 3.5s; }
.node-7 { top: 65%; left: 50%; animation-delay: 1s; }
.node-8 { top: 80%; left: 25%; animation-delay: 2.5s; }

@keyframes nodePulse {
    0%, 100% { opacity: 0; transform: scale(1); box-shadow: 0 0 0 0 var(--accent); }
    50% { opacity: 0.7; transform: scale(1.8); box-shadow: 0 0 20px 4px var(--accent); }
}

/* ---- TOPBAR ---- */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(14, 17, 23, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 15px;
}
.logo-icon {
    color: var(--accent);
    font-size: 20px;
}
.logo-pro {
    color: var(--accent);
}
.logo-ver {
    font-size: 11px;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 400;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 13px;
    font-family: var(--font-mono);
}
.nav-links a {
    color: var(--text-dim);
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--text);
}
.nav-cta {
    background: var(--accent);
    color: #fff !important;
    padding: 6px 16px;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s, transform 0.15s !important;
}
.nav-cta:hover {
    background: #2b83f0;
    transform: translateY(-1px);
}

/* ---- HERO ---- */
.hero {
    position: relative;
    z-index: 1;
    padding: 160px 32px var(--section-py);
    max-width: var(--max-w);
    margin: 0 auto;
}
.hero-content {
    max-width: 800px;
}
.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 32px;
    letter-spacing: 0.02em;
    animation: fadeInUp 0.6s ease-out both;
}
.hero h1 {
    font-family: var(--font-body);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}
.hero-line-1 {
    display: block;
    font-size: clamp(42px, 8vw, 80px);
    color: var(--text);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}
.hero-line-2 {
    display: block;
    font-size: clamp(42px, 8vw, 80px);
    background: linear-gradient(135deg, var(--accent) 0%, var(--cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}
.hero-sub {
    font-size: 18px;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 560px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}
.hero-sub strong {
    color: var(--text);
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 64px;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 0 0 0 var(--accent-dim), 0 4px 16px rgba(26, 115, 232, 0.25);
}
.btn-primary:hover {
    background: #2b83f0;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 0 0 4px var(--accent-dim), 0 8px 24px rgba(26, 115, 232, 0.35);
}
.btn-ghost {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    color: var(--text);
    border-color: var(--border-lit);
    background: var(--bg-card);
}

/* ---- TERMINAL ---- */
.hero-terminal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    max-width: 640px;
    animation: fadeInUp 0.8s ease-out 0.5s both;
    box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.terminal-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}
.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.dot-r { background: var(--red); opacity: 0.8; }
.dot-y { background: var(--yellow); opacity: 0.8; }
.dot-g { background: var(--green); opacity: 0.8; }
.terminal-title {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    margin-left: 8px;
}
.terminal-body {
    padding: 20px 24px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.8;
    overflow-x: auto;
    color: var(--text-dim);
}
.terminal-body code {
    background: none;
    padding: 0;
    font-size: inherit;
    color: inherit;
}
.t-comment { color: var(--text-muted); }
.t-cmd     { color: var(--green); }
.t-ip      { color: var(--cyan); }
.t-gw      { color: var(--orange); }

/* ---- SECTIONS COMMON ---- */
.section-header {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
    margin-bottom: 64px;
}
.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}
.section-header h2 {
    font-family: var(--font-body);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.section-header p {
    font-size: 17px;
    color: var(--text-dim);
    max-width: 500px;
}

/* ---- FEATURES ---- */
.features {
    position: relative;
    z-index: 1;
    padding: var(--section-py) 0;
    border-top: 1px solid var(--border);
}
.features-grid {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px 24px;
    transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.feature-card:hover {
    border-color: var(--border-lit);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}
.feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}
.feature-card p {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6;
}

/* ---- HOW IT WORKS ---- */
.how-it-works {
    position: relative;
    z-index: 1;
    padding: var(--section-py) 0;
    border-top: 1px solid var(--border);
}
.steps {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}
.step {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    gap: 32px;
    align-items: center;
    width: 100%;
    max-width: 860px;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}
.step-connector {
    display: flex;
    justify-content: center;
    padding: 0 32px;
}
.step-number {
    font-family: var(--font-mono);
    font-size: 48px;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.3;
    line-height: 1;
    min-width: 72px;
    text-align: center;
}
.step-content h3 {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}
.step-content p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.6;
}
.step-visual pre {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 20px;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.7;
    overflow-x: auto;
}
.step-visual code {
    background: none;
    padding: 0;
    font-size: inherit;
    color: var(--text-dim);
}

/* ---- PLATFORMS ---- */
.platforms {
    position: relative;
    z-index: 1;
    padding: var(--section-py) 0;
    border-top: 1px solid var(--border);
}
.platform-table-wrap {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
    overflow-x: auto;
}
.platform-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.platform-table th {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}
.platform-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.platform-table tbody tr {
    transition: background 0.15s;
}
.platform-table tbody tr:hover {
    background: var(--bg-card);
}
.platform-table td code {
    font-size: 12px;
    white-space: nowrap;
}
.platform-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    white-space: nowrap;
}
.badge-os {
    background: rgba(26, 115, 232, 0.12);
    color: var(--accent);
    border: 1px solid rgba(26, 115, 232, 0.25);
}
.badge-hw {
    background: rgba(63, 185, 80, 0.1);
    color: var(--green);
    border: 1px solid rgba(63, 185, 80, 0.25);
}
.badge-vpn {
    background: rgba(163, 113, 247, 0.1);
    color: var(--purple);
    border: 1px solid rgba(163, 113, 247, 0.25);
}

/* ---- STATS BAR ---- */
.stats-bar {
    position: relative;
    z-index: 1;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 48px 32px;
    display: flex;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex: 1;
}
.stat-value {
    font-family: var(--font-mono);
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}
.stat-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ---- FOOTER ---- */
.footer {
    position: relative;
    z-index: 1;
    padding: 80px 0 0;
}
.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px 60px;
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 64px;
}
.footer-brand .logo-icon {
    font-size: 24px;
}
.footer-brand .logo-text {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 600;
}
.footer-desc {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}
.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-dim);
    padding: 4px 0;
    transition: color 0.2s;
}
.footer-col a:hover {
    color: var(--text);
}
.donate-link {
    background: linear-gradient(135deg, var(--orange), #f0c040);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    position: relative;
}
.donate-link::before {
    content: '♥';
    margin-right: 6px;
    -webkit-text-fill-color: var(--orange);
}
.donate-link:hover {
    filter: brightness(1.3);
}
.footer-bottom {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 20px 32px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
}

/* ---- ANIMATIONS ---- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- GUIDES HUB ---- */
.hub { max-width: 1100px; margin: 0 auto; padding: 120px 32px 80px; position: relative; z-index: 1; }
.hub-header { text-align: center; margin-bottom: 56px; }
.hub-header h1 { font-size: clamp(32px, 5vw, 48px); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 12px; }
.hub-header p { font-size: 17px; color: var(--text-dim); max-width: 640px; margin: 0 auto; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.hub-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; transition: border-color 0.2s, transform 0.2s; position: relative; display: block; color: inherit; }
.hub-card:hover { border-color: var(--border-lit); transform: translateY(-2px); color: inherit; }
.hub-card.coming-soon { opacity: 0.5; pointer-events: none; }
.hub-card-badge { display: inline-block; font-family: var(--font-mono); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; padding: 3px 8px; border-radius: 4px; margin-bottom: 12px; }
.hub-card-badge.router { background: rgba(63, 185, 80, 0.12); color: var(--green); border: 1px solid rgba(63, 185, 80, 0.25); }
.hub-card-badge.os { background: rgba(26, 115, 232, 0.12); color: var(--accent); border: 1px solid rgba(26, 115, 232, 0.25); }
.hub-card-badge.vpn { background: rgba(163, 113, 247, 0.12); color: var(--purple); border: 1px solid rgba(163, 113, 247, 0.25); }
.hub-card-badge.soon { background: var(--bg-surface); color: var(--text-muted); border: 1px solid var(--border); }
.hub-card h3 { font-family: var(--font-mono); font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.hub-card p { font-size: 14px; color: var(--text-dim); line-height: 1.6; }

/* ---- FAQ SECTION ---- */
.faq {
    position: relative;
    z-index: 1;
    padding: var(--section-py) 0;
    border-top: 1px solid var(--border);
}
.faq-list {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color 0.2s;
}
.faq-item[open] {
    border-color: var(--border-lit);
}
.faq-item summary {
    padding: 20px 24px;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '+';
    font-family: var(--font-mono);
    font-size: 22px;
    color: var(--text-dim);
    font-weight: 300;
    transition: transform 0.2s;
    flex-shrink: 0;
}
.faq-item[open] summary::after {
    content: '−';
    color: var(--accent);
}
.faq-item summary:hover {
    color: var(--accent);
}
.faq-item .faq-answer {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--text-dim);
    line-height: 1.7;
}

/* ---- LANGUAGE SWITCHER ---- */
.lang-switch {
    position: relative;
    cursor: pointer;
    padding: 8px 0;
}
.lang-current {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 6px;
    transition: color 0.2s, border-color 0.2s;
}
.lang-switch:hover .lang-current {
    color: var(--text);
    border-color: var(--border-lit);
}
.lang-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 0;
    min-width: 140px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    z-index: 200;
}
.lang-switch:hover .lang-dropdown {
    display: block;
}
.lang-dropdown a {
    display: block;
    padding: 8px 16px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-dim);
    transition: background 0.15s, color 0.15s;
}
.lang-dropdown a:hover {
    background: var(--bg-surface);
    color: var(--text);
}
.lang-dropdown a.lang-active {
    color: var(--accent);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-py: 80px;
    }
    .nav-links a:not(.nav-cta) {
        display: none;
    }
    .nav-links .lang-switch {
        display: block;
    }
    .hero {
        padding-top: 120px;
    }
    .hero-actions {
        flex-direction: column;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .step {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .step-number {
        font-size: 32px;
        min-width: auto;
        text-align: left;
    }
    .step-visual {
        display: none;
    }
    .stats-bar {
        flex-wrap: wrap;
        gap: 32px;
    }
    .stat {
        flex: 0 0 calc(33% - 16px);
    }
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .features-grid {
        gap: 12px;
    }
    .feature-card {
        padding: 20px 18px;
    }
    .stats-bar {
        padding: 32px 24px;
    }
    .stat-value {
        font-size: 24px;
    }
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}