/*
 * style.css — Fistbump main website
 */

html, body { overflow-x: hidden; }

.container { max-width: 1000px; margin: 0 auto; padding: 0 var(--fb-space-lg); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Header ── */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(9, 9, 11, 0.7);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(87, 199, 237, 0.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fb-text); }
.logo:hover { text-decoration: none; }
.logo-icon { border-radius: var(--fb-radius); }
.logo-text { font-size: var(--fb-text-xl); font-weight: 600; letter-spacing: -0.02em; }
.nav { display: flex; gap: var(--fb-space-lg); }
.nav a { font-size: var(--fb-text-base); color: var(--fb-text-muted); text-decoration: none; transition: color 0.15s; }
.nav a:hover { color: var(--fb-text); text-decoration: none; }

.menu-toggle { display: none; background: none; border: none; color: var(--fb-text-muted); padding: var(--fb-space-sm); cursor: pointer; }
.menu-toggle:hover { color: var(--fb-text); opacity: 1; }
.mobile-nav { display: none; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; z-index: 99; background: rgba(9, 9, 11, 0.95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--fb-border); padding: var(--fb-space-sm) var(--fb-space-lg); }
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 10px 0; font-size: var(--fb-text-base); color: var(--fb-text-muted); }
.mobile-nav a:hover { color: var(--fb-text); text-decoration: none; }

/* ── Hero ── */
.hero {
  position: relative;
  padding: 140px 0 100px;
  text-align: center;
  overflow: hidden;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(87, 199, 237, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(87, 199, 237, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
}
.hero-glow {
  position: absolute; top: -300px; left: 50%; transform: translateX(-60%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(87, 199, 237, 0.12) 0%, transparent 60%);
  pointer-events: none;
}
.hero-glow-2 {
  position: absolute; top: -200px; left: 50%; transform: translateX(10%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(87, 199, 237, 0.06) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-block;
  font-size: var(--fb-text-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--fb-accent);
  border: 1px solid var(--fb-accent-dim);
  border-radius: var(--fb-radius-pill);
  padding: 5px 16px;
  margin-bottom: 28px;
}

.hero-title {
  font-size: 64px; font-weight: 700; letter-spacing: -0.04em;
  line-height: 1.05; margin-bottom: 24px;
  background: linear-gradient(135deg, #fafafa 0%, #fafafa 40%, #57c7ed 70%, #3ab4de 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 8s ease infinite;
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-sub {
  font-size: 17px; color: var(--fb-text-muted); max-width: 580px;
  margin: 0 auto 40px; line-height: 1.7;
}

.hero-actions { display: flex; justify-content: center; gap: var(--fb-space-md); flex-wrap: wrap; margin-bottom: 56px; }
.btn { display: inline-flex; align-items: center; padding: 12px 28px; border-radius: var(--fb-radius); font-size: var(--fb-text-base); font-weight: 600; text-decoration: none; transition: all 0.15s; cursor: pointer; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--fb-accent); color: var(--fb-bg); }
.btn-primary:hover { opacity: 0.85; color: var(--fb-bg); }
.btn-outline { background: transparent; color: var(--fb-text-muted); border: 1px solid var(--fb-border-light); }
.btn-outline:hover { background: var(--fb-bg-hover); color: var(--fb-text); }

/* ── Terminal overrides ── */
.terminal-sm .fb-terminal-body code { font-size: 12px; line-height: 1.65; }
.t-cursor::after {
  content: '\2588';
  color: var(--fb-text-muted);
  animation: blink 1.2s step-end infinite;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-terminal {
  max-width: 680px; margin: 0 auto; text-align: left;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 4px 24px rgba(0, 0, 0, 0.3),
    0 0 80px rgba(87, 199, 237, 0.05);
}

/* ── Intro ── */
.intro { padding: 80px 0; border-top: 1px solid var(--fb-border); }
.intro-text {
  font-size: 17px; color: var(--fb-text-muted); line-height: 1.85;
  max-width: 720px; margin: 0 auto 20px;
}
.intro-text:last-child { margin-bottom: 0; }
.intro-text strong { color: var(--fb-text); font-weight: 600; }

/* ── Protocol parameters ── */
.params { padding: 0 0 80px; }
.params-border {
  padding: 1px;
  border-radius: var(--fb-radius-lg);
  background: linear-gradient(135deg, var(--fb-accent-dim), var(--fb-border), var(--fb-accent-dim));
}
.params-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 1px; background: var(--fb-border);
  border-radius: var(--fb-radius-lg); overflow: hidden;
}
.param { background: rgba(24, 24, 27, 0.6); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); padding: 28px 16px; text-align: center; }
.param-value {
  font-size: 16px; font-weight: 700; margin-bottom: 8px;
  letter-spacing: -0.01em; color: var(--fb-text);
}
.param-label { font-size: var(--fb-text-xs); color: var(--fb-text-dim); text-transform: uppercase; letter-spacing: 0.06em; line-height: 1.4; }

/* ── Technical deep dives ── */
.technical { padding: 80px 0; border-top: 1px solid var(--fb-border); }

.deep-dive {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: start;
  padding: 64px 0; border-bottom: 1px solid var(--fb-border);
}
.deep-dive:last-child { border-bottom: none; padding-bottom: 0; }
.deep-dive:first-child { padding-top: 0; }

.deep-dive-text, .deep-dive-visual { min-width: 0; }
.deep-dive.reverse .deep-dive-text { order: 2; }
.deep-dive.reverse .deep-dive-visual { order: 1; }

.deep-dive-text h2 {
  font-size: 24px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 16px;
}
.deep-dive-text p {
  font-size: var(--fb-text-base); color: var(--fb-text-muted); line-height: 1.8; margin-bottom: 14px;
}
.deep-dive-text p:last-child { margin-bottom: 0; }

/* Detail card */
.detail-card {
  background: rgba(24, 24, 27, 0.6); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(87, 199, 237, 0.08); border-radius: var(--fb-radius-lg); overflow: hidden;
}
.detail-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 13px 20px; border-bottom: 1px solid var(--fb-border);
  font-size: var(--fb-text-sm);
}
.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--fb-text-dim); }
.detail-value { font-weight: 500; }
.accent { color: var(--fb-accent); font-weight: 600; }

/* Auction flow timeline */
.auction-flow {
  position: relative;
  display: flex;
  justify-content: space-between;
  padding: 0 8px;
  margin-bottom: 20px;
}
.auction-flow::before {
  content: '';
  position: absolute;
  top: 17px; left: 26px; right: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--fb-accent), var(--fb-accent));
  border-radius: 1px;
}
.auction-step { text-align: center; position: relative; z-index: 1; flex: 1; }
.step-node {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--fb-bg);
  border: 2px solid var(--fb-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; color: var(--fb-accent);
  margin: 0 auto 8px;
  box-shadow: 0 0 12px rgba(87, 199, 237, 0.15);
}
.step-node.last {
  border-color: var(--fb-accent);
  color: var(--fb-accent);
  box-shadow: 0 0 12px rgba(87, 199, 237, 0.15);
}
.step-name {
  font-size: 10px; font-weight: 700; font-family: var(--fb-font-mono);
  color: var(--fb-text); letter-spacing: 0.04em; margin-bottom: 3px;
}
.step-time {
  font-size: 10px; color: var(--fb-text-dim); line-height: 1.3;
}

/* Architecture diagram */
.arch-diagram {
  background: rgba(24, 24, 27, 0.6); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(87, 199, 237, 0.08); border-radius: var(--fb-radius-lg); overflow: hidden;
}
.arch-group { border-bottom: 1px solid var(--fb-border); }
.arch-group:last-child { border-bottom: none; }
.arch-group-label {
  font-size: 9px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--fb-accent);
  padding: 8px 20px 0;
}
.arch-layers {}
.arch-layer {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 20px; font-size: var(--fb-text-sm); color: var(--fb-text-muted);
}
.arch-num {
  width: 22px; height: 22px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--fb-accent-bg); color: var(--fb-accent);
  font-size: 9px; font-weight: 700; flex-shrink: 0;
}

/* ── Section headings ── */
.section-title {
  font-size: 32px; font-weight: 700; letter-spacing: -0.03em;
  margin-bottom: 48px; text-align: center;
}

/* ── Software ── */
.software { padding: 100px 0; border-top: 1px solid var(--fb-border); }

.sw-wallet {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 40px; align-items: start; margin-bottom: 20px;
}
.sw-wallet-screenshot img {
  width: 100%; border-radius: var(--fb-radius-lg);
  border: 1px solid var(--fb-border);
}
.sw-wallet-info h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.sw-wallet-info > p { font-size: var(--fb-text-base); color: var(--fb-text-muted); line-height: 1.7; margin-bottom: 24px; }
.sw-downloads { margin-bottom: 16px; }
.sw-downloads-label { display: block; font-size: var(--fb-text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fb-text-dim); margin-bottom: 8px; }
.download-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.sw-coming-soon { font-size: var(--fb-text-sm); color: var(--fb-text-dim); margin-bottom: 20px; }
.sw-source { font-size: var(--fb-text-sm); color: var(--fb-text-dim); }

.sw-dev-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.sw-dev-card {
  padding: 28px; background: rgba(24, 24, 27, 0.6); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(87, 199, 237, 0.08); border-radius: var(--fb-radius-lg);
  min-width: 0; overflow: hidden;
}
.sw-dev-card h3 { font-size: 16px; font-weight: 600; font-family: var(--fb-font-mono); margin-bottom: 10px; }
.sw-dev-tag { font-family: var(--fb-font-sans); font-size: var(--fb-text-xs); font-weight: 500; color: var(--fb-text-dim); margin-left: 6px; }
.sw-dev-card > p { font-size: var(--fb-text-sm); color: var(--fb-text-muted); line-height: 1.7; margin-bottom: 16px; }
.sw-dev-card .fb-terminal { margin-bottom: 16px; }
.sw-dev-links { display: flex; flex-wrap: wrap; gap: 16px; }
.sw-dev-links a { font-size: var(--fb-text-sm); font-weight: 500; }

.sw-node {
  background: var(--fb-surface);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius-lg);
  padding: 32px;
  margin-top: 32px;
}
.sw-node h3 { margin: 0 0 12px; font-size: var(--fb-text-lg); }
.sw-node p { color: var(--fb-text-muted); margin: 0 0 20px; }
.sw-node .sw-downloads { margin-bottom: 20px; }
.sw-node .fb-terminal { margin-bottom: 20px; }

/* ── Resources ── */
.resources { padding: 80px 0; border-top: 1px solid var(--fb-border); }
.resources-grid { display: grid; grid-template-columns: 1fr; gap: 8px; max-width: 640px; margin: 0 auto; }
.resource-card {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 24px; background: rgba(24, 24, 27, 0.6); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(87, 199, 237, 0.08); border-radius: var(--fb-radius-lg);
  text-decoration: none; transition: border-color 0.15s, background 0.15s;
}
.resource-card:hover { border-color: var(--fb-border-light); background: var(--fb-bg-hover); text-decoration: none; }
.resource-featured { border-color: var(--fb-accent-dim); }
.resource-featured:hover { border-color: var(--fb-accent); }
.resource-card h3 { font-size: 14px; font-weight: 600; color: var(--fb-text); margin-bottom: 2px; }
.resource-card p { font-size: var(--fb-text-sm); color: var(--fb-text-dim); line-height: 1.5; }
.resource-arrow { margin-left: auto; color: var(--fb-text-dim); font-size: 18px; flex-shrink: 0; transition: color 0.15s; }
.resource-card:hover .resource-arrow { color: var(--fb-accent); }

/* ── Footer ── */
.footer { border-top: 1px solid var(--fb-border); padding: 60px 0 48px; }
.footer-grid { display: grid; grid-template-columns: 1fr auto auto; gap: 80px; }
.footer-brand { max-width: 280px; }
.footer-logo-row { display: flex; align-items: center; gap: 10px; font-size: var(--fb-text-xl); font-weight: 600; color: var(--fb-text); margin-bottom: 10px; }
.footer-logo-row svg { border-radius: var(--fb-radius); }
.footer-tagline { font-size: var(--fb-text-sm); color: var(--fb-text-dim); line-height: 1.6; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: var(--fb-text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fb-text-dim); margin-bottom: 4px; }
.footer-col a { font-size: var(--fb-text-sm); color: var(--fb-text-muted); }
.footer-col a:hover { color: var(--fb-text); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav { display: none; }
  .menu-toggle { display: block; }

  .hero { padding: 100px 0 72px; }
  .hero-title { font-size: 40px; }
  .hero-sub { font-size: 15px; }
  .hero-terminal { max-width: 100%; }

  .intro { padding: 64px 0; }
  .intro-text { font-size: 16px; }

  .params-grid { grid-template-columns: repeat(3, 1fr); }

  .technical { padding: 64px 0; }
  .deep-dive { grid-template-columns: 1fr; gap: 24px; padding: 48px 0; }
  .deep-dive.reverse .deep-dive-text { order: 1; }
  .deep-dive.reverse .deep-dive-visual { order: 2; }
  .deep-dive-text h2 { font-size: 20px; }

  .auction-flow { flex-wrap: wrap; gap: 4px; justify-content: center; }
  .auction-flow::before { display: none; }
  .auction-step { flex: 0 0 auto; min-width: 60px; }

  .software { padding: 64px 0; }
  .section-title { font-size: 26px; }
  .sw-wallet { grid-template-columns: 1fr; gap: 28px; }

  .resources { padding: 64px 0; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 32px; }
  .container { padding: 0 var(--fb-space-base); }
  .params-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
}