/* ─────────────────────────────────────────────────────────────────────────────
   landing.css – ZeroTrace CTF Landing Page
   Dark Cyberpunk Design System
──────────────────────────────────────────────────────────────────────────────── */

/* Override body for landing */
body.landing-page {
  background: #060d1a;
  color: #e2e8f0;
  overflow-x: hidden;
}

/* ── TOKENS ─────────────────────────────────────────────────── */
:root {
  --lp-bg: #060d1a;
  --lp-bg-panel: #0d1b2e;
  --lp-bg-card: #0f2035;
  --lp-primary: #10b981;
  --lp-primary-glow: rgba(16, 185, 129, 0.25);
  --lp-primary-hover: #059669;
  --lp-accent: #06b6d4;
  --lp-text: #e2e8f0;
  --lp-muted: #94a3b8;
  --lp-border: rgba(16, 185, 129, 0.2);
  --lp-border-hover: rgba(16, 185, 129, 0.5);
  --lp-shadow-glow: 0 0 30px rgba(16, 185, 129, 0.2);
  --lp-radius: 12px;
  --lp-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── NAVBAR ─────────────────────────────────────────────────── */
.lp-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0;
  transition: var(--lp-transition);
}

.lp-nav.scrolled {
  background: rgba(6, 13, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--lp-border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.lp-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.lp-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  flex-shrink: 0;
}

.lp-brand-mark {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--lp-primary), var(--lp-accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Orbitron', monospace;
  font-weight: 800;
  font-size: 0.8rem;
  color: #000;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.lp-brand-name {
  font-family: 'Orbitron', monospace;
  font-weight: 700;
  font-size: 1rem;
  color: var(--lp-text);
  letter-spacing: 0.02em;
}

.lp-brand-ctf {
  color: var(--lp-primary);
}

.lp-nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.lp-nav-link {
  color: var(--lp-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.875rem;
  border-radius: 6px;
  text-decoration: none;
  transition: var(--lp-transition);
}

.lp-nav-link:hover {
  color: var(--lp-text);
  background: rgba(255,255,255,0.06);
  text-decoration: none;
}

.lp-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.lp-nav-user {
  color: var(--lp-muted);
  font-size: 0.85rem;
}

/* Nav buttons */
.lp-login-btn {
  background: transparent !important;
  border: 1px solid var(--lp-border);
  color: var(--lp-text) !important;
  padding: 0.5rem 1.125rem !important;
  font-size: 0.875rem !important;
  border-radius: 6px;
}

.lp-login-btn:hover {
  border-color: var(--lp-primary);
  color: var(--lp-primary) !important;
  background: var(--lp-primary-glow) !important;
  text-decoration: none;
}

.lp-register-btn {
  background: var(--lp-primary) !important;
  color: #000 !important;
  padding: 0.5rem 1.125rem !important;
  font-size: 0.875rem !important;
  font-weight: 600 !important;
  border-radius: 6px;
  border: 1px solid transparent;
}

.lp-register-btn:hover {
  background: var(--lp-primary-hover) !important;
  text-decoration: none;
}

/* ── HERO ──────────────────────────────────────────────────── */
.lp-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: url('../images/hero_bg.png');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

.lp-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(6, 13, 26, 0.55) 0%,
    rgba(6, 13, 26, 0.7) 60%,
    rgba(6, 13, 26, 1) 100%
  );
  z-index: 1;
}

.lp-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
  text-align: center;
  width: 100%;
}

.lp-hero-badge {
  display: inline-block;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--lp-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.375rem 1rem;
  border-radius: 999px;
  margin-bottom: 1.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.lp-hero-title {
  font-family: 'Orbitron', monospace;
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  text-shadow: 0 0 60px rgba(16, 185, 129, 0.25);
}

.lp-hero-accent {
  color: var(--lp-primary);
  text-shadow: 0 0 30px rgba(16, 185, 129, 0.5);
}

.lp-hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(226, 232, 240, 0.8);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.lp-hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.lp-cta-primary {
  background: var(--lp-primary) !important;
  color: #000 !important;
  font-weight: 700 !important;
  padding: 0.875rem 2rem !important;
  font-size: 1rem !important;
  border-radius: 8px;
  border: none !important;
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.4);
  transition: var(--lp-transition);
}

.lp-cta-primary:hover {
  background: var(--lp-primary-hover) !important;
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.6);
  transform: translateY(-2px);
  text-decoration: none;
}

.lp-cta-secondary {
  background: transparent !important;
  color: var(--lp-text) !important;
  font-weight: 600 !important;
  padding: 0.875rem 2rem !important;
  font-size: 1rem !important;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.25) !important;
  transition: var(--lp-transition);
}

.lp-cta-secondary:hover {
  border-color: var(--lp-primary) !important;
  color: var(--lp-primary) !important;
  background: var(--lp-primary-glow) !important;
  text-decoration: none;
}

/* ── FLOATING SHIELD ICON ─────────────────────────────────── */
.lp-hero-shield {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.lp-shield-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--lp-primary);
  animation: shieldPulse 3s ease-in-out infinite;
}

.lp-shield-ring-1 { width: 200px; height: 200px; opacity: 0.15; animation-delay: 0s; }
.lp-shield-ring-2 { width: 150px; height: 150px; opacity: 0.25; animation-delay: 0.5s; }
.lp-shield-ring-3 { width: 100px; height: 100px; opacity: 0.4;  animation-delay: 1s; }

@keyframes shieldPulse {
  0%, 100% { transform: scale(1); opacity: inherit; }
  50% { transform: scale(1.06); opacity: 0.6; }
}

.lp-shield-icon {
  font-family: 'Orbitron', monospace;
  font-weight: 800;
  font-size: 2rem;
  color: var(--lp-primary);
  text-shadow: 0 0 20px var(--lp-primary);
  z-index: 3;
  position: relative;
}

/* ── STATS BAR ──────────────────────────────────────────────── */
.lp-stats {
  background: var(--lp-bg-panel);
  border-top: 1px solid var(--lp-border);
  border-bottom: 1px solid var(--lp-border);
}

.lp-stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.lp-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  text-align: center;
}

.lp-stat-value {
  font-family: 'Orbitron', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--lp-primary);
  line-height: 1;
}

.lp-stat-plus {
  color: var(--lp-primary);
  font-size: 1.4rem;
}

.lp-stat-label {
  font-size: 0.8rem;
  color: var(--lp-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lp-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--lp-border);
}

/* ── TAGLINE ──────────────────────────────────────────────── */
.lp-tagline {
  background: var(--lp-bg);
  padding: 5rem 1.5rem;
  text-align: center;
}

.lp-tagline-h {
  font-family: 'Orbitron', monospace;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--lp-text);
  margin-bottom: 1.25rem;
  line-height: 1.25;
}

.lp-tagline-sub {
  max-width: 600px;
  margin: 0 auto;
  color: var(--lp-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ── CATEGORY GRID ─────────────────────────────────────────── */
.lp-categories {
  background: var(--lp-bg);
  padding: 0 1.5rem 5rem;
}

.lp-cat-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.lp-cat-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  padding: 2rem 1.5rem;
  text-align: left;
  transition: var(--lp-transition);
  cursor: default;
}

.lp-cat-card:hover {
  border-color: var(--lp-border-hover);
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.12);
  transform: translateY(-4px);
}

.lp-cat-icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  display: block;
}

.lp-cat-title {
  font-family: 'Orbitron', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--lp-text);
  margin-bottom: 0.625rem;
}

.lp-cat-desc {
  color: var(--lp-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0;
}

.lp-cat-cta {
  text-align: center;
}

/* ── HOW IT WORKS ───────────────────────────────────────────── */
.lp-hiw {
  background: var(--lp-bg-panel);
  border-top: 1px solid var(--lp-border);
  padding: 5rem 1.5rem;
  text-align: center;
}

.lp-section-title {
  font-family: 'Orbitron', monospace;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--lp-text);
  margin-bottom: 3rem;
}

.lp-hiw-steps {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.lp-hiw-step {
  flex: 1;
  min-width: 180px;
  max-width: 220px;
  padding: 1.75rem 1.25rem;
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  text-align: center;
}

.lp-hiw-step h3 {
  font-family: 'Orbitron', monospace;
  font-size: 0.9rem;
  color: var(--lp-text);
  margin-bottom: 0.625rem;
}

.lp-hiw-step p {
  font-size: 0.8rem;
  color: var(--lp-muted);
  line-height: 1.6;
  margin: 0;
}

.lp-hiw-num {
  font-family: 'Orbitron', monospace;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--lp-primary);
  margin-bottom: 0.875rem;
}

.lp-hiw-arrow {
  font-size: 1.5rem;
  color: var(--lp-primary);
  opacity: 0.5;
  padding-top: 3.5rem;
  flex-shrink: 0;
}

/* ── DASHBOARD SECTION (logged in) ──────────────────────────── */
.lp-dashboard-section {
  background: var(--lp-bg);
  padding: 4rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.lp-section-header {
  margin-bottom: 2.5rem;
}

.lp-dashboard-kpis {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.lp-kpi-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  padding: 1.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 150px;
}

.lp-kpi-label {
  font-size: 0.75rem;
  color: var(--lp-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.lp-kpi-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--lp-primary);
  line-height: 1;
}

.lp-dashboard-msg {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ── FOOTER ─────────────────────────────────────────────────── */
.lp-footer {
  background: var(--lp-bg-panel);
  border-top: 1px solid var(--lp-border);
  padding: 2.5rem 1.5rem;
}

.lp-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.lp-footer-copy {
  font-size: 0.8rem;
  color: var(--lp-muted);
  margin: 0;
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .lp-nav-links { display: none; }
  .lp-hero-shield { display: none; }
  .lp-stat-divider { display: none; }
  .lp-stats-inner { gap: 2rem; }
  .lp-hiw-arrow { display: none; }
  .lp-footer-inner { flex-direction: column; align-items: flex-start; }
  .lp-hero-title { font-size: 3rem; }
}

/* ── Override challenge card colors for dark theme ──────────── */
body.landing-page .challenge-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  color: var(--lp-text);
}

body.landing-page .panel, 
body.landing-page .panel-advanced-track {
  background: var(--lp-bg-panel);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
}

body.landing-page h2,
body.landing-page h3 {
  color: var(--lp-text);
}

body.landing-page .meta-label {
  color: var(--lp-muted);
}

body.landing-page .btn-secondary {
  background: transparent;
  border: 1px solid var(--lp-border);
  color: var(--lp-text);
}

body.landing-page .btn-secondary:hover {
  border-color: var(--lp-primary);
  color: var(--lp-primary);
  background: var(--lp-primary-glow);
}