/* ===========================
   ROOT VARIABLES
=========================== */
:root {
  --bg-dark: #0a0f23;
  /* darker blue-black background */
  --bg-card: rgba(12, 19, 43, 0.7);
  /* semi-transparent card */
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --accent: #38bdf8;
  /* primary blue */
  --accent-dark: #0ea5e9;
  /* deeper blue for hover effects */
  --accent-glow: rgba(56, 189, 248, 0.4);
  /* neon glow */
  --radius: 18px;
}

/* ===========================
   GLOBAL RESET
=========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(circle at center, #0a0f23, #000);
  color: var(--text-main);
  min-height: 100vh;
}

/* ===========================
   HEADER
=========================== */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(2, 6, 23, 0.8);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  border-bottom: 1px solid rgba(56, 189, 248, 0.15);
}

header h1 {
  font-size: 22px;
  font-weight: 600;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent);
}

nav a {
  margin-left: 24px;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--accent-dark);
}

/* animated underline */
nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  transform: translateX(-50%);
  transition: width 0.35s ease;
}

nav a:hover::after {
  width: 120%;
}

/* ===========================
   GRID LAYOUT
=========================== */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  padding: 50px 40px;
}

/* ===========================
   CARD
=========================== */
.card {
  text-decoration: none;
  color: inherit;
}

.card .content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 26px;
  height: 100%;
  border: 1px solid rgba(56, 189, 248, 0.15);
  box-shadow: 0 0 20px var(--accent-glow), 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: all 0.45s ease;
  position: relative;
  overflow: hidden;
}

/* floating animation */
@keyframes float {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }

  100% {
    transform: translateY(0);
  }
}

.card .content {
  animation: float 6s ease-in-out infinite;
}

/* hover glow */
.card .content:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow:
    0 0 60px var(--accent-glow),
    0 25px 50px rgba(0, 0, 0, 0.6);
  border-color: var(--accent-dark);
}

/* ===========================
   CARD CONTENT
=========================== */
.icon {
  font-size: 34px;
  margin-bottom: 14px;
  display: inline-block;
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent);
}

.card h2 {
  font-size: 20px;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--accent-dark);
  text-shadow: 0 0 6px var(--accent);
}

.desc {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===========================
   LOGIN CARD STYLE (NEW)
=========================== */
.login-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px 30px;
  width: 360px;
  box-shadow: 0 0 20px var(--accent-glow), 0 10px 30px rgba(0, 0, 0, 0.6);
  text-align: center;
  position: relative;
  margin: 50px auto;
}

.login-card h2 {
  color: var(--accent);
  margin-bottom: 30px;
  font-weight: 600;
  font-size: 24px;
  text-shadow: 0 0 12px var(--accent);
}

.login-card input {
  width: 100%;
  padding: 12px 15px;
  margin-bottom: 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(56, 189, 248, 0.3);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  font-size: 14px;
  transition: all 0.3s ease;
}

.login-card input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  outline: none;
}

.login-card button {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius);
  border: none;
  background: var(--accent);
  color: #000;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 0 15px var(--accent-glow);
  transition: all 0.3s ease;
}

.login-card button:hover {
  background: var(--accent-dark);
  box-shadow: 0 0 25px var(--accent-glow);
}

.login-card .signup {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-muted);
}

.login-card .signup a {
  color: var(--accent);
  text-decoration: none;
}

.login-card .signup a:hover {
  text-decoration: underline;
}

/* ===========================
   FOOTER
=========================== */
footer {
  margin-top: 60px;
  background: rgba(2, 6, 23, 0.85);
  border-top: 1px solid rgba(56, 189, 248, 0.15);
  padding: 40px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
  margin-bottom: 25px;
}

.footer-content h4 {
  margin-bottom: 14px;
  font-size: 16px;
  color: var(--accent);
  text-shadow: 0 0 6px var(--accent);
}

.footer-content a {
  display: block;
  text-decoration: none;
  color: var(--text-muted);
  margin-bottom: 8px;
  transition: color 0.3s ease;
}

.footer-content a:hover {
  color: var(--accent-dark);
}

footer p {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 768px) {
  header {
    padding: 16px 20px;
  }

  .grid-container {
    padding: 30px 20px;
  }

  .login-card {
    width: 90%;
    padding: 30px 20px;
  }
}