/* =========================
   GLOBAL RESET
========================= */

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

html {
  scroll-behavior: smooth;
}

/* =========================
   GLOBAL BODY
========================= */

body {
  font-family: "Inter", "Segoe UI", sans-serif;
  background: black;
  color: white;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ===========================
   Glass Progress Indicator
=========================== */

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;

  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  border-bottom: 1px solid rgba(255, 255, 255, 0.15);

  box-shadow:
    0 0 6px rgba(255, 255, 255, 0.08),
    0 2px 6px rgba(0, 0, 0, 0.4);

  z-index: 9999;
  transition: width 0.1s ease-out;
}

/* =========================
   BACKGROUND LAYER
========================= */

.background {
  position: fixed;
  inset: 0;
  background: url("../assets/stars.jpg") center / cover no-repeat;
  filter: brightness(0.35);
  z-index: -2;
}

.background::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 30%,
    rgba(255,255,255,0.05),
    transparent 60%
  );
  z-index: -1;
}

/* =========================
   GLASS PANEL
========================= */

.content-panel {
  width: 100%;
  max-width: 1200px;
  padding: 60px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.15);
  box-shadow:
    0 0 40px rgba(255,255,255,0.05),
    0 0 80px rgba(0,0,0,0.4);
  position: relative;
}

.content-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 16px;
  pointer-events: none;
  box-shadow: 0 0 60px rgba(255,255,255,0.05);
}

/* =========================
   TYPOGRAPHY
========================= */

h1 {
  font-weight: 700;
}

h2 {
  font-weight: 600;
}

p {
  line-height: 1.8;
  color: #cfcfcf;
}

/* =========================
   NAV BUTTONS
========================= */

.nav-buttons {
  margin-top: 70px;
  display: flex;
  gap: 25px;
}

.cta-button {
  padding: 0.8rem 2rem;
  border: 1px solid rgba(255,255,255,0.5);
  background: transparent;
  color: white;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.35s ease;
}

.cta-button:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.cta-button:active {
  transform: scale(0.96);
}

.cta-button.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.cta-button.disabled:hover {
  transform: none;
  background: transparent;
}

/* =========================
   CUSTOM SCROLLBAR
========================= */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.3);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.5);
}

/* =========================
   ACCESSIBILITY
========================= */

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

button {
  -webkit-tap-highlight-color: transparent;
}