:root {
  --bg-main: #050716;
  --bg-gradient-top: #0b1024;
  --bg-gradient-bottom: #12052a;
  --accent-blue: #3aa8ff;
  --accent-blue-soft: #2b7fd6;
  --accent-purple: #7b3df2;
  --text-main: #ffffff;
  --text-muted: #a7b0c7;
  --nav-bg: #070a18;
  --card-bg: #0b0f22;
  --border-soft: #1b2340;
  --danger: #ff4b81;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.65);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition-fast: 0.18s ease-out;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at top left, #151a3a 0, #050716 40%, #02030a 100%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 24px;
}

.page {
  max-width: 1200px;
  width: 100%;
  min-height: 80vh;
  background: radial-gradient(circle at top right, #1b1f3f 0, #050716 45%, #02030a 100%);
  border-radius: 28px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(90, 120, 255, 0.25);
  position: relative;
  overflow: hidden;
}

.page::before {
  content: "";
  position: absolute;
  inset: -40%;
  background-image:
    radial-gradient(circle at 10% 0%, rgba(58, 168, 255, 0.18) 0, transparent 55%),
    radial-gradient(circle at 90% 20%, rgba(123, 61, 242, 0.18) 0, transparent 55%),
    radial-gradient(circle at 50% 100%, rgba(255, 75, 129, 0.12) 0, transparent 55%);
  opacity: 0.9;
  pointer-events: none;
  z-index: 0;
}

.page-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  height: 100%;
}

/* SIDEBAR */

.sidebar {
  background: linear-gradient(180deg, #050716 0%, #050716 40%, #050716 100%);
  border-right: 1px solid rgba(40, 60, 120, 0.6);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.brand-logo {
  width: 40px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(90deg, #3aa8ff 0%, #1b4a8f 50%, #050716 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.6), 0 12px 30px rgba(0, 0, 0, 0.8);
  position: relative;
  overflow: hidden;
}

.brand-logo::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.brand-logo-shield {
  width: 22px;
  height: 28px;
  border-radius: 10px 10px 14px 14px;
  background: linear-gradient(90deg, #3aa8ff 0%, #1b4a8f 100%);
  box-shadow: inset 0 -2px 4px rgba(0, 0, 0, 0.45);
  position: relative;
}

.brand-logo-shield::after {
  content: "S";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: #ffffff;
  text-shadow: 0 0 6px rgba(0, 0, 0, 0.8);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

.nav {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-section-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.nav-item-icon {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(40, 60, 120, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #c7d4ff;
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(58, 168, 255, 0.25), rgba(123, 61, 242, 0.25));
  color: var(--text-main);
  transform: translateX(2px);
}

.nav-item.active .nav-item-icon {
  background: rgba(58, 168, 255, 0.9);
  color: #050716;
}

.nav-item:hover:not(.active) {
  background: rgba(40, 60, 120, 0.35);
  color: #e4ebff;
}

/* REMOVE UNDERLINE FROM LINKS */
a.nav-item,
.nav-item,
.nav-item * {
  text-decoration: none !important;
  color: inherit;
}

.sidebar-footer {
  margin-top: auto;
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* MAIN CONTENT */

.main {
  padding: 28px 32px 24px 32px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* HERO */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-kicker {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-blue-soft);
}

.hero-title {
  font-size: 32px;
  line-height: 1.1;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-title span {
  background: linear-gradient(90deg, #3aa8ff, #7b3df2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 520px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 4px;
}

.btn {
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #3aa8ff, #7b3df2);
  color: #050716;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.6);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.7);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-blue);
  border-color: rgba(58, 168, 255, 0.6);
}

.btn-secondary:hover {
  background: rgba(58, 168, 255, 0.12);
  transform: translateY(-1px);
}

.brand-logo-img {
  width: 40px;
  height: auto;
  display: block;
  border-radius: 10px;
}

.app-screenshot {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 18px;
  border: 1px solid rgba(40, 60, 120, 0.7);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.65);
  object-fit: contain;
}

.hero-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-meta strong {
  color: #e4ebff;
  font-weight: 600;
}

/* APP PREVIEW */

.hero-app {
  position: relative;
  display: flex;
  justify-content: flex-end;
}

.app-screenshot {
  width: 100%;
  max-width: 420px;      /* prevents huge size */
  height: auto;          /* keeps proportions */
  border-radius: 18px;
  border: 1px solid rgba(40, 60, 120, 0.7);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.65);
  object-fit: contain;
}

.app-card {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, #050716, #0b0f22);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(40, 60, 120, 0.7);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* HOMEPAGE FEATURE CARDS */

.features {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  border-radius: var(--radius-md);
  background: rgba(5, 7, 22, 0.9);
  border: 1px solid rgba(40, 60, 120, 0.7);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-icon {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: rgba(58, 168, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--accent-blue);
}

.feature-title {
  font-size: 14px;
  font-weight: 600;
}

.feature-body {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
}

/* FEATURES PAGE */

.features-page {
  margin-top: 40px;
  padding: 40px 0;
  border-top: 1px solid rgba(40, 60, 120, 0.6);
}

.features-header {
  text-align: center;
  margin-bottom: 40px;
}

.features-header h1 {
  font-size: 2.2rem;
  background: linear-gradient(90deg, #3aa8ff, #7b3df2);
  -webkit-background-clip: text;
  color: transparent;
}

.features-header p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
  margin-top: 10px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.feature-block {
  background: rgba(5, 7, 22, 0.9);
  border: 1px solid rgba(40, 60, 120, 0.7);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.feature-block h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: #3aa8ff;
}

.feature-block ul {
  list-style: none;
  padding: 0;
}

.feature-block li {
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: #a7b0c7;
}

/* FOOTER */

.footer {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid rgba(40, 60, 120, 0.6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
}

.footer-left {
  display: flex;
  gap: 6px;
  align-items: baseline;
}

.footer-left strong {
  color: #e4ebff;
  font-weight: 600;
}

.footer-right {
  opacity: 0.9;
}

/* RESPONSIVE */

@media (max-width: 960px) {
  body {
    padding: 16px;
  }

  .page {
    border-radius: 22px;
  }

  .page-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    flex-direction: row;
    align-items: center;
    padding: 16px 18px;
    border-bottom: 1px solid rgba(40, 60, 120, 0.6);
    overflow-x: auto;
  }

  .nav {
    flex-direction: row;
    gap: 4px;
  }

  .nav-section-label {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .features {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    padding: 10px;
  }

  .page {
    border-radius: 18px;
  }

  .main {
    padding: 18px 14px;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-body {
    font-size: 13px;
  }

  .hero-cta-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .app-card {
    max-width: 100%;
  }

  .app-body {
    grid-template-columns: minmax(0, 1fr);
  }

  .features {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}