.poster {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  padding: 30px 50px;
}

.advertising img {
  width: 900px;
  height: 500px;
  object-fit: cover;
  border-radius: 15px;
}

.input {
  background: #f5f7fa;
  border-radius: 15px;
  padding: 0 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}
.input {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f4f6f9;
}

.login-box {
  width: 100%;
  max-width: 450px;
}

.login-box h1 {
  font-size: 32px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 10px;
}

.subtitle {
  color: #64748b;
  margin-bottom: 30px;
}

.login-box label {
  display: block;
  margin-bottom: 8px;
  margin-top: 15px;
  font-weight: 600;
  color: #0f172a;
}

.login-box input {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid #cbd5e1;
  font-size: 15px;
  outline: none;
  margin-bottom: 10px;
}

.login-box input:focus {
  border-color: #3b82f6;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  margin-top: 25px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: linear-gradient(to right, #2563eb, #06b6d4);
  cursor: pointer;
}

.btn-secondary {
  width: 100%;
  padding: 14px;
  margin-top: 15px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  background: #e2e8f0;
  color: #334155;
  cursor: pointer;
}
/* ================= MOBILE (telefon) ================= */
@media (max-width: 576px) {
  .poster {
    flex-direction: column;
    padding: 20px;
    gap: 20px;
  }

  .advertising img {
    width: 100%;
    height: auto;
  }

  .login-box {
    max-width: 100%;
  }

  .login-box h1 {
    font-size: 22px;
    text-align: center;
  }

  .subtitle {
    text-align: center;
  }

  .btn {
    display: flex;
    flex-direction: column;
  }
}

/* ================= TABLET ================= */
@media (min-width: 577px) and (max-width: 768px) {
  .poster {
    flex-direction: column;
    padding: 25px;
    gap: 25px;
  }

  .advertising img {
    width: 100%;
    height: auto;
  }

  .login-box {
    max-width: 100%;
  }

  .login-box h1 {
    font-size: 26px;
    text-align: center;
  }

  .subtitle {
    text-align: center;
  }
}

/* ================= LAPTOP (orta ekranlar) ================= */
@media (min-width: 769px) and (max-width: 992px) {
  .poster {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }

  .advertising img {
    width: 100%;
    max-width: 700px;
    height: auto;
  }

  .login-box {
    max-width: 500px;
  }
}