/* =========================================
   SPACE SYSTEMS LAB — Main Stylesheet
   Aesthetic: Dark space / technical / sharp
   ========================================= */

:root {
  --bg: #090c10;
  --surface: #0f1318;
  --surface2: #161b22;
  --border: #1f2937;
  --text: #e2e8f0;
  --text-muted: #64748b;
  --accent: #00d4aa;
  --accent2: #3b82f6;
  --white: #ffffff;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- STARFIELD ---- */

body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:-1;
    opacity:.55;

    background-image:
        radial-gradient(circle at 12% 18%,rgba(255,255,255,.9) 1px,transparent 1.8px),
        radial-gradient(circle at 78% 30%,rgba(255,255,255,.6) 1px,transparent 1.8px),
        radial-gradient(circle at 35% 70%,rgba(255,255,255,.8) 1px,transparent 2px),
        radial-gradient(circle at 90% 82%,rgba(255,255,255,.45) 1px,transparent 1.6px),
        radial-gradient(circle at 55% 45%,rgba(0,212,170,.45) 1.2px,transparent 2px);

    background-size:420px 420px;

    animation:starDrift 120s linear infinite;
}

a { color: inherit; text-decoration: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }

/* ---- NAVBAR ---- */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2.5rem;
  background: rgba(9, 12, 16, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 2px;
}

.dot { color: var(--accent); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.nav-links a:hover, .nav-links a.active { color: var(--white); }

.github-btn {
  border: 1px solid var(--accent) !important;
  color: var(--accent) !important;
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem !important;
  transition: background 0.2s !important;
}

.github-btn:hover { background: var(--accent) !important; color: var(--bg) !important; }

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5rem 2.5rem;
  position: relative;
  overflow: hidden;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-grid-overlay{
  position:absolute;
  inset:0;
  pointer-events:none;

  background-image:
    linear-gradient(rgba(0,212,170,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,212,170,.03) 1px,transparent 1px);

  background-size:60px 60px;

  mask-image:radial-gradient(circle at center,black 45%,transparent 100%);
  -webkit-mask-image:radial-gradient(circle at center,black 45%,transparent 100%);
}

.hero-content { flex: 1; z-index: 1; }

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: -2px;
}

.accent { color: var(--accent); }

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  padding: 0.8rem 1.8rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  transition: opacity 0.2s, transform 0.2s;
  display: inline-block;
  cursor: pointer;
  border: none;
  font-family: var(--font-display);
}

.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.8rem 1.8rem;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: border-color 0.2s, color 0.2s;
  display: inline-block;
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost.disabled { pointer-events: none; opacity: 0.4; }

/* ---- ORBIT ANIMATION ---- */
.hero-visual {
  flex: 0 0 400px;
  height: 400px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 170, 0.15);
}

.ring-1 { width: 200px; height: 200px; animation: spin 8s linear infinite; border-top-color: rgba(0,212,170,0.4); }
.ring-2 { width: 300px; height: 300px; animation: spin 14s linear infinite reverse; border-right-color: rgba(59,130,246,0.3); }
.ring-3 { width: 380px; height: 380px; animation: spin 22s linear infinite; border-bottom-color: rgba(0,212,170,0.15); }

@keyframes spin { to { transform: rotate(360deg); } }

.satellite {
  font-size: 2.5rem;
  animation: float 4s ease-in-out infinite;
  z-index: 1;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* ---- SECTIONS ---- */
.about-section, .page-content {
  padding: 6rem 0;
}

.modules-preview {
  padding: 6rem 0;
  background: var(--surface);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 3rem;
}

/* ---- CARDS ---- */
.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover{
  border-color:var(--accent);
  transform:translateY(-4px);
  box-shadow:0 12px 35px rgba(0,212,170,.08);
}
.card-icon { font-size: 2rem; margin-bottom: 1rem; }

.card h3 { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 0.75rem; }

.card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* ---- MODULES GRID ---- */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.module-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  transition: all 0.2s;
  display: block;
}

/* Modifier to make bottom tooltips pop upwards */
.info-btn .tooltip.tooltip-up {
  top: auto;
  bottom: 140%; 
  left: -80px; /* Shifts the box left so it doesn't clip off-screen */
  transform: none;
}

.info-btn .tooltip.tooltip-up::before {
  top: 100%; /* Moves the arrow to the bottom of the tooltip */
  left: 84px; /* Aligns the arrow horizontally with the 'i' button */
  transform: none;
  border: 5px solid transparent;
  border-top-color: var(--accent); /* Makes the arrow point down */
  border-bottom: none;
}


.module-card:hover{
  border-color:var(--accent);
  transform:translateY(-5px);
  box-shadow:0 12px 35px rgba(0,212,170,.08);
}

.module-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 2px;
  display: block;
  margin-bottom: 0.75rem;
}

.module-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.module-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

.highlight-card {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(0,212,170,0.05), var(--surface2));
}

/* ---- PAGE HEADER ---- */
.page-header {
  padding: 5rem 2.5rem 3rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -2px;
  margin-bottom: 1rem;
}

.page-header p { color: var(--text-muted); font-size: 1.05rem; max-width: 500px; }

/* ---- MODULE DETAIL CARDS ---- */
.module-detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.module-detail-card h2 { font-size: 1.7rem; margin-bottom: 1rem; }

.module-detail-card p { color: var(--text-muted); margin-bottom: 1.5rem; line-height: 1.7; }

.module-header { display: flex; gap: 1rem; align-items: center; margin-bottom: 1rem; }

.module-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: rgba(0,212,170,0.1);
  color: var(--accent);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  letter-spacing: 1px;
}

.status-badge { font-size: 0.75rem; padding: 0.3rem 0.8rem; border-radius: 100px; font-weight: 600; }
.status-badge.coming { background: rgba(59,130,246,0.1); color: var(--accent2); }
.status-badge.planned { background: rgba(100,116,139,0.15); color: var(--text-muted); }

.topic-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.topic-tags span {
  font-size: 0.78rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.25rem 0.7rem;
  border-radius: 100px;
}

.highlight-card-full {
  border-color: rgba(0,212,170,0.3);
  background: linear-gradient(135deg, rgba(0,212,170,0.04), var(--surface));
}

/* ---- RESOURCE CARDS ---- */
.resource-group { margin-bottom: 4rem; }

.resource-cards { display: flex; flex-direction: column; gap: 1.5rem; }

.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.8rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  transition: border-color 0.2s;
}

.resource-card:hover { border-color: var(--accent); }
.resource-card.muted { opacity: 0.5; }

.resource-icon { font-size: 2rem; flex-shrink: 0; }

.resource-info { flex: 1; }
.resource-info h3 { font-size: 1.05rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.resource-info p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0.75rem; }

.resource-meta { display: flex; gap: 1rem; }
.resource-meta span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: var(--surface2);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* ---- WORKSHOP FORM ---- */
.form-section, .past-sessions, .impact-preview, .growth-section, .github-section, .feedback-section {
  margin-bottom: 5rem;
}

.signup-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  margin-top: 2rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }

.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text); }

.form-group input, .form-group select, .form-group textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.9rem;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
}

.form-group select option { background: var(--surface2); }

.form-group textarea { resize: vertical; margin-bottom: 1.5rem; }

/* ---- SESSIONS ---- */
.sessions-list { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 1.5rem; }

.session-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: flex-start;
  gap: 2rem;
}

.session-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  white-space: nowrap;
  padding-top: 0.25rem;
}

.session-info h3 { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.session-info p { font-size: 0.875rem; color: var(--text-muted); }

.session-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(0,212,170,0.1);
  color: var(--accent);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  white-space: nowrap;
  height: fit-content;
  margin-left: auto;
}

/* ---- METRICS ---- */
.metrics-row, .big-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.metric-box, .big-metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
}

.metric-num, .big-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.big-num { font-size: 2.5rem; }

.metric-label, .big-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
}

.big-sub { display: block; font-size: 0.78rem; color: var(--text-muted); margin-top: 0.3rem; }

/* ---- FEEDBACK ---- */
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.feedback-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.8rem;
}

.feedback-screenshot {
  background: var(--surface2);
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.feedback-card p { font-size: 0.9rem; color: var(--text-muted); font-style: italic; margin-bottom: 0.75rem; line-height: 1.7; }

.feedback-author { font-size: 0.8rem; font-weight: 600; color: var(--accent); }

/* ---- CHART ---- */
.chart-placeholder {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-top: 1.5rem;
}

.chart-placeholder > p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 2rem; }

.fake-chart {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  height: 150px;
  padding-top: 1rem;
}

.bar {
  flex: 1;
  background: linear-gradient(to top, var(--accent), rgba(0,212,170,0.3));
  border-radius: 4px 4px 0 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 0.5rem;
  transition: opacity 0.2s;
}

.bar:hover { opacity: 0.8; }

.bar span { font-family: var(--font-mono); font-size: 0.65rem; color: var(--bg); font-weight: 700; }

/* ---- GITHUB SECTION ---- */
.github-stats {
  display: flex;
  gap: 2rem;
  margin: 1.5rem 0;
}

.gh-stat {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.gh-stat span {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  display: block;
  margin-bottom: 0.2rem;
}

/* ---- FOOTER ---- */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  background: var(--surface);
}

.footer-inner { text-align: center; }

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.footer-inner > p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.5rem; }

.footer-links {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.footer-links a { font-size: 0.85rem; color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }

.footer-copy { font-size: 0.78rem; color: var(--text-muted); opacity: 0.5; }

@keyframes starDrift{
    from{
        transform:translate(0,0);
    }

    to{
        transform:translate(-120px,-220px);
    }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg); padding: 2rem; border-bottom: 1px solid var(--border); gap: 1.5rem; }
  .nav-links.open { display: flex; }
  .hamburger { display: block; }
  .hero { flex-direction: column; padding: 3rem 1.5rem; gap: 3rem; }
  .hero-visual { flex: 0 0 250px; width: 250px; height: 250px; }
  .ring-1 { width: 120px; height: 120px; }
  .ring-2 { width: 180px; height: 180px; }
  .ring-3 { width: 230px; height: 230px; }
  .form-row { grid-template-columns: 1fr; }
  .session-card { flex-direction: column; gap: 0.75rem; }
  .session-tag { margin-left: 0; }
  .resource-card { flex-direction: column; }
  .page-header { padding: 3rem 1.5rem 2rem; }
}

/* ---- FADE IN ---- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}