/* ---------- BASE ---------- */
body, html {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  font-family: 'Orbitron', 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(135deg, #101323 0%, #232946 100%);
  color: #ececec;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background 0.6s;
}

/* ---------- CONTAINER PRINCIPAL ---------- */
.login-container {
  width: 100%;
  max-width: 420px;
  background: rgba(28, 29, 46, 0.80);
  border-radius: 22px;
  padding: 42px 30px 32px 30px;
  box-shadow: 0 8px 40px 0 rgba(38, 34, 70, 0.18), 0 1.5px 18px 0 #4f8cff26;
  text-align: center;
  backdrop-filter: blur(13px) saturate(135%);
  border: 1.5px solid rgba(120, 120, 255, 0.11);
  transition: box-shadow 0.3s, border 0.3s;
}

.login-container:hover {
  box-shadow: 0 14px 48px 2px rgba(63, 178, 255, 0.19), 0 3px 18px 0 #89f3ff1c;
  border: 1.5px solid rgba(120, 200, 255, 0.22);
}

.logo-db {
  max-width: 400px;
  width: auto;
  margin: 0 auto 22px auto;
  display: block;
  filter: drop-shadow(0 3px 7px #181a2e77);
  animation: fadeIn 1.8s;
  height: auto;
}

.login-container h2 {
  font-family: 'Cinzel Decorative', serif;
  font-size: 2.1rem;
  color: #aee2ff;
  margin-bottom: 22px;
  letter-spacing: 1px;
  text-shadow: 0 2px 12px #1996a5cc;
}

/* ---------- INPUTS ---------- */
.input-group {
  position: relative;
  margin: 18px 0;
  display: flex;
  align-items: center;
  background: rgba(32, 34, 62, 0.91);
  border: 1.5px solid #24305e;
  border-radius: 14px;
  transition: border 0.3s, box-shadow 0.3s;
  box-shadow: 0 2px 10px #1013230c;
}

.input-group:focus-within {
  border-color: #7ee8fa;
  box-shadow: 0 0 12px #aee2ff66;
}

.input-group i {
  color: #85b2ff;
  font-size: 1.13rem;
  margin-left: 13px;
  margin-right: 12px;
  flex-shrink: 0;
  opacity: 0.88;
}

.input-group input {
  flex: 1;
  padding: 14px 12px;
  font-size: 1.05rem;
  border: none;
  background: transparent;
  color: #fff;
  outline: none;
  letter-spacing: 0.5px;
  transition: color 0.3s;
  min-width: 0;
}

.input-group input:focus {
  color: #aee2ff;
}

input[name="captcha"] {
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ---------- CAPTCHA ---------- */
.captcha-display {
  font-family: 'Fira Mono', 'Consolas', monospace;
  font-size: 1.18rem;
  letter-spacing: 6px;
  margin: 17px 0 0 0;
  background: linear-gradient(90deg, #2b5876cc 0%, #4e4376cc 100%);
  border: 1.5px dashed #7ee8fa;
  padding: 13px 0;
  border-radius: 13px;
  color: #ffef97;
  user-select: none;
  text-align: center;
  box-shadow: 0 2px 10px #2b587644;
  font-weight: bold;
  text-shadow: 0 2px 8px #0006;
  letter-spacing: 7px;
  word-break: break-all;
}

/* ---------- BOTÃO ---------- */
.login-container button {
  margin-top: 28px;
  width: 100%;
  padding: 15px;
  font-size: 1.07rem;
  border-radius: 15px;
  border: none;
  background: linear-gradient(90deg, #43e97b 0%, #38f9d7 100%);
  color: #181a2d;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 2px 18px #38f9d755;
  transition: background 0.25s, transform 0.13s, box-shadow 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.login-container button:hover {
  background: linear-gradient(90deg, #3be3e3 0%, #1996a5 100%);
  box-shadow: 0 0 30px #7ee8fa99;
  transform: translateY(-2px) scale(1.018);
}

.login-container button:active {
  background: linear-gradient(90deg, #1996a5 0%, #3be3e3 100%);
  transform: scale(0.96);
}

/* ---------- LINKS ---------- */
.register-link {
  margin-top: 22px;
  font-size: 1rem;
  color: #aee2ff;
  text-shadow: 0 1px 6px #10132344;
  word-break: break-word;
}

.register-link a {
  color: #3be3e3;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.18s;
}

.register-link a:hover {
  text-decoration: underline;
  color: #aee2ff;
}

/* ---------- FEEDBACK ---------- */
.error {
  margin-top: 14px;
  font-size: 1rem;
  color: #ff6161;
  font-weight: 600;
}

.success {
  margin-top: 14px;
  font-size: 1rem;
  color: #73ff7c;
  font-weight: 600;
}

/* ---------- ANIMAÇÕES ---------- */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ---------- RESPONSIVIDADE ---------- */
@media (max-width: 900px) {
  body {
    align-items: flex-start;
    padding-top: 10vh;
  }
  .login-container {
    max-width: 98%;
    padding: 28px 10px;
  }
}

@media (max-width: 600px) {
  body, html {
    align-items: flex-start;
    padding-top: 5vw;
    padding-bottom: 5vw;
  }
  .login-container {
    max-width: 99vw;
    padding: 10vw 2vw 6vw 2vw;
    border-radius: 12px;
    box-shadow: 0 4px 18px #23294655;
  }
  .logo-db {
    max-width: 75vw;
    margin-bottom: 17px;
  }
  .login-container h2 {
    font-size: 1.17rem;
    margin-bottom: 16px;
  }
  .input-group {
    margin: 11px 0;
    border-radius: 9px;
    font-size: .93rem;
  }
  .input-group i {
    margin-left: 7px;
    margin-right: 7px;
    font-size: 1rem;
  }
  .input-group input {
    font-size: 0.93rem;
    padding: 10px 6px;
  }
  .captcha-display {
    font-size: .95rem;
    padding: 8px 0;
    border-radius: 8px;
    margin: 11px 0 0 0;
    letter-spacing: 4px;
  }
  .login-container button {
    font-size: 0.94rem;
    padding: 11px;
    border-radius: 8px;
    margin-top: 20px;
  }
  .register-link {
    margin-top: 11px;
    font-size: .95rem;
  }
}

@media (max-width: 400px) {
  .login-container {
    padding: 3vw 1vw 3vw 1vw;
  }
  .logo-db {
    max-width: 96vw;
  }
  .input-group input {
    font-size: .88rem;
    padding: 7px 3px;
  }
  .captcha-display {
    font-size: .81rem;
    padding: 4px 0;
    border-radius: 6px;
    letter-spacing: 2px;
  }
}