:root {
    --bg-base: #0b0d10;
    --bg-surface: #13171d;
    --bg-card: #181d24;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(168, 199, 250, 0.35);
    --accent: #a8c7fa;
    --accent-glow: rgba(168, 199, 250, 0.15);
    --accent-purple: #c58af9;
    --text-primary: #e6edf3;
    --text-muted: #8b949e;
    --success: #81c995;
    --warning: #fdd663;
    --error: #f28b82;
    --terminal-bg: #090c10;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Google Sans", sans-serif;
    background-color: var(--bg-base);
    background-image: 
        radial-gradient(circle at 50% -10%, rgba(66, 133, 244, 0.14) 0%, rgba(155, 114, 207, 0.08) 35%, transparent 70%),
        radial-gradient(circle at 100% 100%, rgba(129, 201, 149, 0.04) 0%, transparent 40%),
        var(--bg-base);
    color: var(--text-primary); line-height: 1.6; overflow-x: hidden; min-height: 100vh;
}
header {
    display: flex; justify-content: space-between; align-items: center; padding: 18px 6%;
    border-bottom: 1px solid var(--border); backdrop-filter: blur(20px);
    position: sticky; top: 0; z-index: 50; background: rgba(11, 13, 16, 0.82);
}
.brand { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; color: #fff; letter-spacing: -0.4px; }
.btn {
    background: var(--bg-card); border: 1px solid var(--border); color: var(--text-primary);
    padding: 10px 22px; border-radius: 999px; font-size: 14px; font-weight: 600; cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1); display: inline-flex; align-items: center; gap: 8px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2); user-select: none;
}
.btn:hover { transform: translateY(-1px); border-color: var(--border-hover); background: #202630; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4); }
.btn:active { transform: translateY(0); }
.btn-primary { background: #1f3a60; border-color: #388bfd; color: #fff; }
.btn-primary:hover { background: #264a7a; border-color: #58a6ff; }
.hero-split {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center;
    max-width: 1240px; margin: 40px auto; padding: 40px 6%;
}
@media (max-width: 900px) { .hero-split { grid-template-columns: 1fr; text-align: center; } }
.hero-text h1 { font-size: clamp(34px, 4.5vw, 52px); font-weight: 700; line-height: 1.15; margin-bottom: 20px; letter-spacing: -0.8px; }
.hero-text p { font-size: 17px; color: var(--text-muted); line-height: 1.65; margin-bottom: 30px; }
.badge {
    display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; background: var(--bg-card);
    border: 1px solid var(--border); border-radius: 999px; font-size: 13px; font-weight: 500; color: var(--accent); margin-bottom: 20px;
}
.badge-dot { width: 7px; height: 7px; background: var(--success); border-radius: 50%; box-shadow: 0 0 8px var(--success); }
.canvas-wrapper {
    position: relative; width: 100%; aspect-ratio: 1; max-width: 480px; margin: 0 auto;
    display: flex; align-items: center; justify-content: center;
}
#sphereCanvas { width: 100%; height: 100%; border-radius: 50%; filter: drop-shadow(0 0 35px rgba(56, 139, 253, 0.2)); }
.stats-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; max-width: 1140px; margin: 0 auto 50px; padding: 0 6%; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); padding: 22px; border-radius: 18px; text-align: center; }
.stat-card h3 { font-size: 28px; font-weight: 700; color: #fff; }
.stat-card p { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; max-width: 1140px; margin: 0 auto 60px; padding: 0 6%; }
.feature-card {
    background: var(--bg-card); border: 1px solid var(--border); padding: 30px 24px; border-radius: 20px;
    cursor: pointer; transition: all 0.25s ease; display: flex; flex-direction: column; justify-content: space-between;
}
.feature-card:hover { transform: translateY(-3px); border-color: var(--border-hover); background: #1c222b; }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: #fff; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.55; }
.card-action { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--accent); margin-top: 16px; }
.telemetry-section { max-width: 1140px; margin: 0 auto 80px; padding: 0 6%; }
.terminal-card {
    background: var(--terminal-bg); border: 1px solid var(--border); border-radius: 20px; overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}
.terminal-header {
    background: #161b22; padding: 12px 18px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--border);
}
.term-dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.term-dot.r { background: #ff5f56; } .term-dot.y { background: #ffbd2e; } .term-dot.g { background: #27c93f; }
.term-title { font-size: 12px; font-family: monospace; color: var(--text-muted); margin-left: 8px; }
.terminal-body { padding: 20px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 13px; color: #c9d1d9; }
.telemetry-canvas-wrap { width: 100%; height: 160px; margin-bottom: 18px; position: relative; }
#chartCanvas { width: 100%; height: 100%; }
.terminal-logs { max-height: 180px; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.log-line { line-height: 1.4; color: #8b949e; word-break: break-all; }
.log-line span.ts { color: #58a6ff; }
.log-line span.hl { color: #7ee787; font-weight: 600; }
.cli-prompt { display: flex; align-items: center; gap: 8px; margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(255, 255, 255, 0.05); }
.cli-prompt input {
    background: transparent; border: none; outline: none; color: #fff; font-family: inherit; font-size: 13px; flex: 1;
}
.modal-overlay {
    position: fixed; inset: 0; background: rgba(5, 7, 10, 0.85); backdrop-filter: blur(16px);
    display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 100;
    opacity: 0; visibility: hidden; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-card {
    background: var(--bg-surface); border: 1px solid var(--border); border-radius: 24px; width: 100%; max-width: 480px;
    padding: 32px; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7); transform: translateY(20px); transition: transform 0.3s ease;
}
.modal-overlay.active .modal-card { transform: translateY(0); }
.modal-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 18px; }
.modal-header h2 { font-size: 20px; font-weight: 700; color: #fff; }
.modal-header p { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.modal-close { background: transparent; border: none; color: var(--text-muted); cursor: pointer; padding: 4px; display: flex; }
.modal-close:hover { color: #fff; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: #c4c7c5; margin-bottom: 6px; }
.form-control {
    width: 100%; padding: 12px 14px; background: #090c10; border: 1px solid var(--border); border-radius: 12px;
    color: #fff; font-size: 14px; outline: none; transition: all 0.2s ease;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(168, 199, 250, 0.2); }
.alert-box {
    background: rgba(239, 68, 68, 0.12); border: 1px solid rgba(239, 68, 68, 0.3); color: #fca5a5;
    padding: 12px 14px; border-radius: 12px; font-size: 13px; margin-bottom: 18px; display: none; align-items: center; gap: 10px;
}
.toast-hud {
    position: fixed; bottom: 30px; right: 30px; background: var(--bg-card); border: 1px solid var(--border-hover);
    border-radius: 16px; padding: 16px 20px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6); display: flex; align-items: flex-start; gap: 12px;
    z-index: 200; max-width: 360px; transform: translateY(100px); opacity: 0; visibility: hidden; transition: all 0.3s ease;
}
.toast-hud.active { transform: translateY(0); opacity: 1; visibility: visible; }
.spinner { width: 16px; height: 16px; border: 2px solid rgba(255, 255, 255, 0.3); border-top: 2px solid #fff; border-radius: 50%; animation: spin 0.8s linear infinite; }
footer { text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 13px; border-top: 1px solid var(--border); }
@keyframes spin { 100% { transform: rotate(360deg); } }