/* ======== RESET ======== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Inter", sans-serif;
}

/* ======== BODY ======== */
body {
  background: radial-gradient(circle at top, #002244, #000915);
  color: #e8f1ff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ======== PRELOADER ======== */
#preloader {
  text-align: center;
  padding: 15px;
  background: #031b34;
  color: #00e1ff;
  font-weight: 600;
}

/* ======== NAVBAR ======== */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #001b33;
  padding: 12px 5%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

nav .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
  font-size: 18px;
}

nav .logo img {
  width: 35px;
  height: 35px;
}

nav .links a {
  color: #bcd3ff;
  margin-left: 20px;
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s;
}

nav .links a:hover,
nav .links a.active {
  color: #ffd166;
}

/* ======== LOGIN CARD ======== */
.login-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
}

.login-card {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  box-shadow: 0 0 25px rgba(0, 150, 255, 0.3);
  padding: 40px 30px;
  width: 100%;
  max-width: 400px;
  text-align: center;
  color: #fff;
  transition: transform 0.3s ease;
}

.login-card:hover {
  transform: translateY(-5px);
}

.login-card img {
  width: 80px;
  margin-bottom: 16px;
  filter: drop-shadow(0 0 10px rgba(0, 200, 255, 0.6));
}

.login-card h2 {
  font-size: 26px;
  color: #00e1ff;
  margin-bottom: 10px;
}

.login-card p {
  font-size: 14px;
  color: #bcd3ff;
  margin-bottom: 25px;
}

/* ======== INPUTS ======== */
.login-card input {
  width: 100%;
  padding: 12px 15px;
  margin: 10px 0;
  border-radius: 8px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 15px;
  outline: none;
}

.login-card input::placeholder {
  color: #cde7ff;
}

/* ======== BUTTON ======== */
.login-card button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  background: linear-gradient(90deg, #00aaff, #00e1ff);
  color: #001020;
  box-shadow: 0 0 20px rgba(0, 200, 255, 0.3);
  transition: all 0.3s ease;
}

.login-card button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 200, 255, 0.6);
}

/* ======== ERROR ======== */
.error {
  color: #ff6b6b;
  background: rgba(255, 0, 0, 0.1);
  padding: 8px;
  border-radius: 8px;
  margin-top: 12px;
}

/* ======== REGISTER LINK ======== */
.reg-link {
  margin-top: 20px;
  color: #bde3ff;
  font-size: 0.9rem;
}

.reg-link a {
  color: #00e1ff;
  font-weight: 600;
  text-decoration: none;
}

.reg-link a:hover {
  text-decoration: underline;
}

/* ======== FOOTER ======== */
footer {
  text-align: center;
  padding: 15px 0;
  font-size: 14px;
  color: #bcd3ff;
  background: #001b33;
}

/* ======== RESPONSIVE ======== */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  nav .links {
    margin-top: 10px;
  }

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

@media (max-width: 480px) {
  .login-card h2 {
    font-size: 22px;
  }

  .login-card p {
    font-size: 13px;
  }

  nav .logo img {
    width: 30px;
  }

  footer {
    font-size: 13px;
  }
}