/* Local font (fallback remains Google Fonts). Remove this block to revert. */
@font-face {
    font-family: 'Share Tech Mono';
    src: url('ShareTechMono-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

/* Trace Landing Page Styles */
:root {
    --bg: #000000;
    --fg: #e8e8e8;
    --muted: #b0b0b0;
    --glow: rgba(255,255,255,0.9);
    --glow-soft: rgba(255,255,255,0.35);
    --accent: #f0b43c; /* amber accent from TRACE style */
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    color: var(--fg);
    background: radial-gradient(1200px 1200px at 50% -20%, #0a0a0a 0%, #050505 40%, #000 70%) fixed;
    font-family: 'Share Tech Mono', 'Orbitron', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    overflow-x: hidden;
    padding-top: env(safe-area-inset-top);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

/* Lock scrolling until unlocked */
body.scroll-locked {
    overflow: hidden;
    height: 100vh;
}

body.scroll-locked main {
    overflow: hidden;
    height: 100vh;
}

html.scroll-locked {
    overflow: hidden;
}

/* Global glow utilities */
.glow { text-shadow: 0 0 18px var(--glow), 0 0 36px rgba(255,255,255,0.35); }
.glow-soft { text-shadow: 0 0 10px var(--glow-soft); }
.glow-accent { color: var(--accent); text-shadow: 0 0 12px var(--accent); }
.glow-outline { box-shadow: 0 0 0 1px rgba(255,255,255,0.25), 0 0 24px rgba(255,255,255,0.15) inset, 0 0 28px rgba(255,255,255,0.15); }
.hidden { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* Background canvas and overlay */
#bg {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: -2;
}
.overlay-gradient {
    position: fixed; inset: 0;
    background: radial-gradient(1200px 800px at 50% -10%, rgba(255,255,255,0.06), rgba(0,0,0,0.0) 60%),
                linear-gradient(to bottom, rgba(0,0,0,0.8), rgba(0,0,0,0) 30%, rgba(0,0,0,0) 70%, rgba(0,0,0,0.85));
    pointer-events: none;
    z-index: -1;
}

/* Panels */
main { scroll-snap-type: y mandatory; height: 100vh; overflow-y: auto; }
.panel { scroll-snap-align: start; min-height: 100vh; display: grid; place-items: center; padding: 8vh 6vw; opacity: 0; transform: translateY(24px); transition: opacity 700ms ease, transform 700ms ease; }
.panel.is-visible { opacity: 1; transform: translateY(0); }
.content.narrow { max-width: 900px; text-align: center; }
.content.wide { max-width: 1200px; text-align: center; }

/* Allow How It Works to overflow and scroll internally on mobile */
@media (max-width: 600px) {
    #how-it-works { scroll-snap-align: start; scroll-snap-stop: normal; min-height: fit-content; overflow-y: visible; }
}

/* Section-scoped background for How It Works */
#how-it-works { position: relative; overflow: hidden; }
#how-bg { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: 0.34; }

/* Hero */
.hero-content { display: grid; place-items: center; gap: clamp(26px, 5vw, 36px); text-align: center; }
.logo { font-family: 'Orbitron', 'Share Tech Mono', monospace; letter-spacing: 0.45em; font-weight: 800; font-size: clamp(42px, 9vw, 112px); margin: 0; color: #fff; text-shadow: 0 0 2px rgba(255,255,255,0.08); }
.tagline { margin: 0 auto; font-size: clamp(16px, 2.2vw, 24px); color: var(--fg); opacity: 0.95; max-width: 28ch; text-align: center; }
.cta { display: inline-block; padding: 12px 22px; color: var(--fg); text-decoration: none; border: 1px solid rgba(240,180,60,0.35); border-radius: 4px; transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease, color 200ms ease; }
.cta:hover { transform: translateY(-2px); color: var(--accent); border-color: rgba(240,180,60,0.7); box-shadow: 0 0 22px rgba(240,180,60,0.35), inset 0 0 22px rgba(240,180,60,0.18); }
.unlock-btn { 
    background: transparent; 
    font-family: 'Share Tech Mono', 'Orbitron', monospace; 
    font-size: 1em; 
    cursor: pointer;
    margin-top: 1rem;
    transition: opacity 0.5s ease;
}
.emblem { 
    width: min(22vw, 200px); 
    height: min(22vw, 200px); 
    display: grid; 
    place-items: center; 
    border: clamp(4px, 1.4vw, 8px) solid rgba(255,255,255,0.85); /* Doubled thickness */
    padding: 5%; /* Reduced padding to make image larger */
}
.emblem img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1) drop-shadow(0 0 12px rgba(255,255,255,0.7));
    opacity: 0.9;
}

/* Section titles */
.section-title { font-family: 'Orbitron', 'Share Tech Mono', monospace; letter-spacing: 0.2em; text-transform: uppercase; color: #fff; margin: 0 0 18px; font-size: clamp(18px, 2.4vw, 28px); opacity: 0.95; }
.lead { font-size: clamp(16px, 2.1vw, 20px); line-height: 1.7; color: var(--muted); margin: 0 auto; }

/* How it works */
.how-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(18px, 3vw, 36px); margin-top: 18px; }
.how-card { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.0)); border: 1px solid rgba(255,255,255,0.12); border-radius: 8px; padding: clamp(16px, 2.5vw, 28px); transition: transform 250ms ease, box-shadow 250ms ease, border-color 250ms ease; opacity: 0; transform: translateY(24px); }
.how-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.28); box-shadow: 0 12px 42px rgba(0,0,0,0.6), inset 0 0 18px rgba(255,255,255,0.06); }
.how-card.revealed { opacity: 1; transform: translateY(0); transition-delay: calc(var(--stagger, 0) * 120ms); }
.icon { color: #fff; margin-bottom: 10px; opacity: 0.9; }
.card-title { margin: 8px 0 8px; font-size: clamp(16px, 2vw, 20px); color: #fff; letter-spacing: 0.12em; text-transform: uppercase; }
.card-text { margin: 0; color: var(--muted); line-height: 1.6; }

/* Contact */
.contact-form { display: grid; gap: 14px; margin-top: 8px; }
.form-row input, .form-row textarea { width: min(680px, 86vw); background: transparent; color: var(--fg); border: none; border-bottom: 1px solid rgba(255,255,255,0.25); padding: 12px 6px; font-size: 16px; outline: none; transition: border-color 200ms ease, box-shadow 200ms ease; }
.form-row input::placeholder, .form-row textarea::placeholder { color: rgba(255,255,255,0.45); }
.form-row input:focus, .form-row textarea:focus { border-bottom-color: rgba(255,255,255,0.65); box-shadow: 0 8px 22px -12px rgba(255,255,255,0.35); }
.btn { display: inline-block; width: fit-content; padding: 12px 22px; color: var(--fg); background: transparent; border: 1px solid rgba(240,180,60,0.35); border-radius: 4px; cursor: pointer; transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease, color 200ms ease; }
.btn:hover { transform: translateY(-2px); color: var(--accent); border-color: rgba(240,180,60,0.7); box-shadow: 0 0 22px rgba(240,180,60,0.35), inset 0 0 22px rgba(240,180,60,0.18); }
.form-status { margin-top: 8px; color: var(--muted); min-height: 20px; }

/* Footer */
.footer { position: relative; padding: 20px 6vw 40px; color: rgba(255,255,255,0.6); }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.footer-nav { display: flex; gap: 18px; }
.foot-link { color: rgba(255,255,255,0.6); text-decoration: none; transition: color 200ms ease, text-shadow 200ms ease; }
.foot-link:hover { color: var(--accent); text-shadow: 0 0 12px rgba(240,180,60,0.35); }

/* Responsive */
@media (max-width: 920px) {
    .how-grid { grid-template-columns: 1fr; }
    .drone-silhouette { width: min(56vw, 440px); }
}

/* Mobile scroll behavior and layout */
@media (max-width: 600px) {
    /* Allow How It Works to be taller than the viewport by removing min-height */
    #how-it-works.panel {
        min-height: auto;
        padding-top: 10vh;
        padding-bottom: 10vh;
    }

    /* Tweak content spacing inside for a better fit */
    .how-grid { gap: 16px; }
    .how-card { padding: 14px; }
    .card-text { font-size: 0.95rem; }
}