/* ── Reset & Base ── */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  min-height: 100vh;
}

/* ── Landing Page ── */
#landingPage {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0d1117 0%, #0a1f44 50%, #0f5c2e 100%);
}

.landing-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.12;
}

.s1 {
  width: 500px;
  height: 500px;
  background: #0f5c2e;
  top: -120px;
  right: -100px;
}

.s2 {
  width: 300px;
  height: 300px;
  background: #2d6cdf;
  bottom: -80px;
  left: -60px;
}

.s3 {
  width: 200px;
  height: 200px;
  background: #00e676;
  top: 55%;
  right: 15%;
}

.landing-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 40px 20px;
  max-width: 600px;
}

.landing-badge {
  display: inline-block;
  background: rgba(15, 92, 46, 0.25);
  border: 1px solid #0f5c2e;
  color: #00e676;
  font-size: 13px;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.landing-title {
  font-size: 52px;
  font-weight: bold;
  color: #e6edf3;
  margin: 0 0 16px;
  line-height: 1.2;
}

.landing-title span {
  color: #00e676;
}

.landing-sub {
  color: #8b949e;
  font-size: 17px;
  margin-bottom: 36px;
  line-height: 1.6;
}

.landing-cta {
  background: #cc5500;
  color: white;
  border: none;
  padding: 14px 36px;
  font-size: 17px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.landing-cta:hover {
  background: #e65c00;
  transform: translateY(-2px);
}

/* ── Header ── */
.header {
  background: rgba(13, 17, 23, 0.95);
  border-bottom: 1px solid #2a1616;
  padding: 14px 30px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  color: #00e676;
  font-size: 20px;
  font-weight: bold;
  letter-spacing: 1px;
}

.menu a {
  margin: 0 14px;
  text-decoration: none;
  color: #8b949e;
  font-size: 15px;
  cursor: pointer;
  transition: color 0.2s;
}

.menu a:hover {
  color: #2d6cdf;
}

/* ── Main App Layout ── */
#mainApp {
  background: #0d1117;
  min-height: calc(100vh - 57px);
}

.container {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 30px;
  max-width: 1200px;
  margin: auto;
}

/* ── Sidebar ── */
.activitiesBox {
  width: 260px;
  min-width: 220px;
  background: #2a1a0f;
  border: 1px solid #2a1616;
  border-radius: 14px;
  padding: 20px;
  display: none;
}

.sidebar-title {
  font-size: 14px;
  color: #8b949e;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.folder {
  background: #2a1a0f;
  border-left: 4px solid #cc5500;
  padding: 10px 14px;
  margin: 8px 0;
  border-radius: 8px;
  font-weight: bold;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e6edf3;
  transition: background 0.2s, transform 0.15s;
}

.folder:hover {
  background: #3a2414;
  transform: translateX(4px);
}

.activitiesBox ul {
  list-style: none;
  padding: 0 0 0 12px;
  margin: 0 0 6px;
}

.activitiesBox li {
  margin: 8px 0;
  cursor: pointer;
  font-size: 13px;
  color: #8b949e;
  padding: 5px 8px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15px;
}

.activitiesBox li:hover {
  background: #2a1a0f;
  color: #00e676;
}

.hidden {
  display: none;
}

/* ── Display Box ── */
.displayBox {
  flex: 1;
  min-width: 0;
}

/* Home box */
.homeBox {
  background: #2a1a0f;
  border: 1px solid #2a1616;
  border-radius: 14px;
  padding: 50px 40px;
  text-align: center;
  margin-bottom: 20px;
}

.homeBox h2 {
  color: #00e676;
  font-size: 26px;
  margin-bottom: 10px;
}

.homeBox p {
  color: #8b949e;
  font-size: 15px;
  margin: 6px 0;
}

/* Info box (About) */
.infoBox {
  background: #2a1a0f;
  border: 1px solid #2a1616;
  border-left: 5px solid #0f5c2e;
  border-radius: 14px;
  padding: 30px 36px;
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.9;
  color: #c9d1d9;
}

.infoBox h2 {
  margin-top: 0;
  color: #00e676;
  font-size: 20px;
  margin-bottom: 16px;
}

.infoBox p {
  margin: 6px 0;
}

.infoBox strong {
  color: #e6edf3;
}

/* Console / output area */
.console {
  background: #0d1117;
  border: 1px solid #2a1616;
  color: #00e676;
  padding: 30px;
  border-radius: 14px;
  white-space: pre-wrap;
  text-align: center;
  font-size: 18px;
  font-weight: bold;
  min-height: 80px;
  font-family: 'Courier New', monospace;
}

/* ── Inputs ── */
.console input,
input {
  background: #2a1a0f;
  border: 1px solid #30363d;
  color: #e6edf3;
}

.console input:focus,
input:focus {
  border-color: #0f5c2e;
}

/* ── Buttons ── */
.btn {
  background: #cc5500;
  color: white;
}

.btn:hover {
  background: #e65c00;
}