/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    /* Default to Light mode (blueprint theme) */
    --bg-color: #F0F4F8;
    --bg-grid: rgba(0, 112, 243, 0.05);
    --text-color: #0F172A;
    --text-muted: #475569;
    --primary-color: #0070F3;
    --primary-hover: #0051B3;
    --accent-cyan: #00B4AD;
    --card-bg: rgba(255, 255, 255, 0.7);
    --border-color: rgba(0, 112, 243, 0.15);
    --header-bg: rgba(240, 244, 248, 0.85);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    /* Dark mode (enterprise navy) */
    --bg-color: #080E1A;
    --bg-grid: rgba(255, 255, 255, 0.04);
    --text-color: #F8FAFC;
    --text-muted: #94A3B8;
    --primary-color: #0070F3;
    --primary-hover: #3291FF;
    --accent-cyan: #00DFD8;
    --card-bg: rgba(8, 14, 26, 0.6);
    --border-color: rgba(0, 112, 243, 0.25);
    --header-bg: rgba(8, 14, 26, 0.85);
    --shadow: 0 8px 32px 0 rgba(0, 112, 243, 0.15);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    background-image: 
        linear-gradient(var(--bg-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.mono { font-family: 'JetBrains Mono', monospace; }
.text-cyan { color: var(--accent-cyan); }

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left { display: flex; align-items: center; gap: 2rem; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--primary-color); letter-spacing: -0.5px; }

.uptime-badge {
    display: none;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    border-radius: 9999px;
    background: rgba(0, 223, 216, 0.05);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 223, 216, 0.2);
}
@media (min-width: 1024px) { .uptime-badge { display: inline-flex; } }

.pulse-dot {
    width: 8px; height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(0, 223, 216, 0.7);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 223, 216, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(0, 223, 216, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 223, 216, 0); }
}

nav { display: flex; align-items: center; gap: 2rem; }
.nav-links { display: flex; gap: 1.5rem; list-style: none; }
.nav-links a { font-weight: 500; font-size: 0.9rem; transition: color 0.3s; color: var(--text-color); }
.nav-links a:hover { color: var(--primary-color); }

/* Theme Toggle */
.theme-toggle-btn {
    background: transparent; border: none; color: var(--text-color); cursor: pointer;
    padding: 0.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    transition: all 0.3s ease;
}
.theme-toggle-btn:hover { background: rgba(0, 112, 243, 0.1); }
.icon-sun { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.75rem 2rem; border-radius: 0.5rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; text-decoration: none; }
.btn-primary { background: var(--primary-color); color: #fff; border: 1px solid var(--primary-hover); box-shadow: 0 4px 14px 0 rgba(0,112,243,0.39); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,112,243,0.23); }

/* Container & Sections */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
section { padding: 6rem 0; }
.section-title { font-size: 2.2rem; font-weight: 700; margin-bottom: 3rem; letter-spacing: -0.5px; }

/* Hero */
.hero { text-align: center; padding: 8rem 2rem; position: relative; overflow: hidden; }
.hero::before {
    content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 60vw; height: 60vw; background: radial-gradient(circle, rgba(0,112,243,0.15) 0%, transparent 70%); z-index: -1; pointer-events: none;
}
.headline { font-size: 3.5rem; line-height: 1.2; margin-bottom: 1.5rem; letter-spacing: -1px; font-weight: 700; text-transform: uppercase;}
.hero p { font-size: 1.25rem; color: var(--text-muted); margin-bottom: 2.5rem; max-width: 700px; margin-inline: auto; }

/* Bento Grid */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}
.bento-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.3s, border-color 0.3s;
    display: flex; flex-direction: column; justify-content: space-between;
}
.bento-item:hover { transform: translateY(-5px); border-color: var(--primary-color); }
.bento-icon { width: 40px; height: 40px; color: var(--primary-color); margin-bottom: 1.5rem; }
.bento-item h3 { font-size: 1.5rem; margin-bottom: 1rem; font-weight: 600; }
.bento-item p { color: var(--text-muted); }

.bento-large { grid-column: span 2; }
.bento-full { grid-column: span 3; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

/* Interactive Components */
.interactive-panel { background: rgba(255,255,255,0.5); border-radius: 0.75rem; padding: 1.5rem; border: 1px solid var(--border-color); }
[data-theme="dark"] .interactive-panel { background: rgba(0,0,0,0.2); }

.protocol-switcher {
    display: flex; position: relative; background: rgba(15,23,42,0.05); border-radius: 99px; padding: 0.25rem; margin-bottom: 1.5rem; width: max-content;
    border: 1px solid var(--border-color);
}
[data-theme="dark"] .protocol-switcher { background: rgba(15,23,42,0.5); }
.pill-bg {
    position: absolute; top: 0.25rem; left: 0.25rem; height: calc(100% - 0.5rem); width: 100px;
    background: var(--primary-color); border-radius: 99px; transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); z-index: 1;
}
.proto-btn {
    position: relative; z-index: 2; background: transparent; border: none; color: var(--text-muted);
    padding: 0.5rem 1rem; width: 100px; font-weight: 600; cursor: pointer; transition: color 0.3s;
}
.proto-btn.active { color: #fff; }

.matrix-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.matrix-item { display: flex; flex-direction: column; }
.matrix-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.matrix-val { font-size: 1.25rem; color: var(--accent-cyan); font-weight: 700; }

.slider-container { margin-top: 1.5rem; }
.slider-label { display: flex; justify-content: space-between; font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.5rem; }
input[type=range] { -webkit-appearance: none; width: 100%; background: transparent; }
input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none; height: 16px; width: 16px; border-radius: 50%;
    background: var(--accent-cyan); cursor: pointer; margin-top: -6px; box-shadow: 0 0 10px rgba(0, 223, 216, 0.5);
}
input[type=range]::-webkit-slider-runnable-track {
    width: 100%; height: 4px; cursor: pointer; background: var(--border-color); border-radius: 2px;
}

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.price-card {
    background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 1rem; padding: 3rem 2rem;
    display: flex; flex-direction: column; position: relative; transition: transform 0.3s, box-shadow 0.3s;
}
.price-card.pro { border-color: var(--primary-color); transform: scale(1.05); box-shadow: 0 0 30px rgba(0, 112, 243, 0.15); }
.price-card.pro::before {
    content: 'ENTERPRISE RECOMMENDED'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--primary-color); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 0.25rem 1rem; border-radius: 99px; letter-spacing: 1px;
}
.price-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.price { font-size: 3.5rem; font-weight: 700; margin: 1rem 0; color: var(--primary-color); letter-spacing: -2px; }
.price span { font-size: 1rem; color: var(--text-muted); font-weight: 400; letter-spacing: 0; }
.features-list { margin: 2rem 0; flex-grow: 1; list-style: none; }
.features-list li { margin-bottom: 1rem; display: flex; align-items: center; gap: 0.75rem; color: var(--text-color); font-size: 0.95rem; }
.features-list svg { color: var(--accent-cyan); width: 18px; height: 18px; flex-shrink: 0; }

/* FAQ & Reviews */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { margin-bottom: 1rem; border: 1px solid var(--border-color); border-radius: 0.5rem; overflow: hidden; background: var(--card-bg); }
.faq-question {
    width: 100%; padding: 1.5rem; background: transparent; border: none; text-align: left; font-size: 1.1rem;
    font-weight: 600; color: var(--text-color); cursor: pointer; display: flex; justify-content: space-between; align-items: center;
}
.faq-icon { transition: transform 0.3s ease; color: var(--primary-color); }
.faq-item.active .faq-icon { transform: rotate(180deg); }
.faq-answer { padding: 0 1.5rem; max-height: 0; overflow: hidden; transition: all 0.3s ease; color: var(--text-muted); }
.faq-item.active .faq-answer { padding: 0 1.5rem 1.5rem 1.5rem; max-height: 500px; }

.review-card { font-style: italic; }
.reviewer { display: flex; align-items: center; gap: 1rem; margin-top: 1.5rem; font-style: normal; }
.reviewer-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--border-color); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary-color); }
.stars { color: var(--primary-color); margin-bottom: 1rem; }

/* Footer */
footer { background: var(--card-bg); border-top: 1px solid var(--border-color); padding: 4rem 2rem 2rem; margin-top: 4rem; }
[data-theme="dark"] footer { background: rgba(8, 14, 26, 0.9); }
.footer-content { max-width: 1200px; margin: 0 auto; text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 2.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); transition: color 0.3s; font-size: 0.95rem; font-weight: 500; }
.footer-links a:hover { color: var(--primary-color); }
.copyright { color: var(--text-muted); font-size: 0.875rem; border-top: 1px solid var(--border-color); padding-top: 2rem; font-family: 'JetBrains Mono', monospace; }

/* Subpage */
.page-header { text-align: center; padding: 4rem 2rem; border-bottom: 1px solid var(--border-color); background: var(--card-bg); }
.page-content { max-width: 800px; margin: 4rem auto; padding: 0 2rem; }
.page-content h2 { margin: 2rem 0 1rem; color: var(--primary-color); }
.page-content p, .page-content li { color: var(--text-muted); margin-bottom: 1rem; }
.page-content ul { margin-left: 1.5rem; margin-bottom: 1.5rem; }

/* Responsive */
@media (max-width: 1024px) {
    .bento-grid { grid-template-columns: 1fr; }
    .bento-large, .bento-full { grid-column: span 1; }
    .bento-full { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; gap: 3rem; }
    .price-card.pro { transform: scale(1); }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .header-left { gap: 1rem; }
}