/* ========== RESET / VARIABLES ========== */
:root {
  --nav-bg: rgba(13, 27, 42, 0.85);
  --nav-blur: 12px;
  --nav-glow: #6f42c1;
  --text: #ffffff;
  --hover: #ffcc70;
  --max-width: 1200px;
}

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

body {
  font-family: 'Poppins', sans-serif;
}

/* ========== NAVBAR ========== */
.pyra-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- Logo ---- */
.logo {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  background: linear-gradient(135deg, #4158d0, #6f42c1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.5px;
}

/* ---- Hamburger ---- */
.hamburger {
  display: none;
  flex-direction: column;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger .bar {
  width: 24px;
  height: 2px;
  margin: 3px 0;
  background: var(--text);
  transition: 0.3s;
}

/* ---- Links ---- */
.nav-links ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--hover);
  transition: width 0.3s;
}

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

.nav-links a:hover::after,
.nav-links a:focus::after {
  width: 100%;
}

@media (max-width: 768px) {
  .hamburger { display: flex; }          /* show icon */
  .nav-links {
    position: absolute;
    top: 100%; left: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(var(--nav-blur));
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); /* closed */
    transition: clip-path 0.35s ease-out;
  }
  .nav-links.open {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); /* open */
  }
}